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.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/BuildExecutable.py

@@ -0,0 +1,170 @@
+"""
+Compile a Python script into an executable that embeds CPython.
+Requires CPython to be built as a shared library ('libpythonX.Y').
+
+Basic usage:
+
+    python -m Cython.Build.BuildExecutable [ARGS] somefile.py
+"""
+
+from __future__ import absolute_import
+
+DEBUG = True
+
+import sys
+import os
+if sys.version_info < (3, 9):
+    from distutils import sysconfig as _sysconfig
+
+    class sysconfig(object):
+
+        @staticmethod
+        def get_path(name):
+            assert name == 'include'
+            return _sysconfig.get_python_inc()
+
+        get_config_var = staticmethod(_sysconfig.get_config_var)
+else:
+    # sysconfig can be trusted from cpython >= 3.8.7
+    import sysconfig
+
+
+def get_config_var(name, default=''):
+    return sysconfig.get_config_var(name) or default
+
+INCDIR = sysconfig.get_path('include')
+LIBDIR1 = get_config_var('LIBDIR')
+LIBDIR2 = get_config_var('LIBPL')
+PYLIB = get_config_var('LIBRARY')
+PYLIB_DYN = get_config_var('LDLIBRARY')
+if PYLIB_DYN == PYLIB:
+    # no shared library
+    PYLIB_DYN = ''
+else:
+    PYLIB_DYN = os.path.splitext(PYLIB_DYN[3:])[0]  # 'lib(XYZ).so' -> XYZ
+
+CC = get_config_var('CC', os.environ.get('CC', ''))
+CFLAGS = get_config_var('CFLAGS') + ' ' + os.environ.get('CFLAGS', '')
+LINKCC = get_config_var('LINKCC', os.environ.get('LINKCC', CC))
+LINKFORSHARED = get_config_var('LINKFORSHARED')
+LIBS = get_config_var('LIBS')
+SYSLIBS = get_config_var('SYSLIBS')
+EXE_EXT = sysconfig.get_config_var('EXE')
+
+
+def _debug(msg, *args):
+    if DEBUG:
+        if args:
+            msg = msg % args
+        sys.stderr.write(msg + '\n')
+
+
+def dump_config():
+    _debug('INCDIR: %s', INCDIR)
+    _debug('LIBDIR1: %s', LIBDIR1)
+    _debug('LIBDIR2: %s', LIBDIR2)
+    _debug('PYLIB: %s', PYLIB)
+    _debug('PYLIB_DYN: %s', PYLIB_DYN)
+    _debug('CC: %s', CC)
+    _debug('CFLAGS: %s', CFLAGS)
+    _debug('LINKCC: %s', LINKCC)
+    _debug('LINKFORSHARED: %s', LINKFORSHARED)
+    _debug('LIBS: %s', LIBS)
+    _debug('SYSLIBS: %s', SYSLIBS)
+    _debug('EXE_EXT: %s', EXE_EXT)
+
+
+def _parse_args(args):
+    cy_args = []
+    last_arg = None
+    for i, arg in enumerate(args):
+        if arg.startswith('-'):
+            cy_args.append(arg)
+        elif last_arg in ('-X', '--directive'):
+            cy_args.append(arg)
+        else:
+            input_file = arg
+            args = args[i+1:]
+            break
+        last_arg = arg
+    else:
+        raise ValueError('no input file provided')
+
+    return input_file, cy_args, args
+
+
+def runcmd(cmd, shell=True):
+    if shell:
+        cmd = ' '.join(cmd)
+        _debug(cmd)
+    else:
+        _debug(' '.join(cmd))
+
+    import subprocess
+    returncode = subprocess.call(cmd, shell=shell)
+
+    if returncode:
+        sys.exit(returncode)
+
+
+def clink(basename):
+    runcmd([LINKCC, '-o', basename + EXE_EXT, basename+'.o', '-L'+LIBDIR1, '-L'+LIBDIR2]
+           + [PYLIB_DYN and ('-l'+PYLIB_DYN) or os.path.join(LIBDIR1, PYLIB)]
+           + LIBS.split() + SYSLIBS.split() + LINKFORSHARED.split())
+
+
+def ccompile(basename):
+    runcmd([CC, '-c', '-o', basename+'.o', basename+'.c', '-I' + INCDIR] + CFLAGS.split())
+
+
+def cycompile(input_file, options=()):
+    from ..Compiler import Version, CmdLine, Main
+    options, sources = CmdLine.parse_command_line(list(options or ()) + ['--embed', input_file])
+    _debug('Using Cython %s to compile %s', Version.version, input_file)
+    result = Main.compile(sources, options)
+    if result.num_errors > 0:
+        sys.exit(1)
+
+
+def exec_file(program_name, args=()):
+    runcmd([os.path.abspath(program_name)] + list(args), shell=False)
+
+
+def build(input_file, compiler_args=(), force=False):
+    """
+    Build an executable program from a Cython module.
+
+    Returns the name of the executable file.
+    """
+    basename = os.path.splitext(input_file)[0]
+    exe_file = basename + EXE_EXT
+    if not force and os.path.abspath(exe_file) == os.path.abspath(input_file):
+        raise ValueError("Input and output file names are the same, refusing to overwrite")
+    if (not force and os.path.exists(exe_file) and os.path.exists(input_file)
+            and os.path.getmtime(input_file) <= os.path.getmtime(exe_file)):
+        _debug("File is up to date, not regenerating %s", exe_file)
+        return exe_file
+    cycompile(input_file, compiler_args)
+    ccompile(basename)
+    clink(basename)
+    return exe_file
+
+
+def build_and_run(args):
+    """
+    Build an executable program from a Cython module and run it.
+
+    Arguments after the module name will be passed verbatimly to the program.
+    """
+    program_name, args = _build(args)
+    exec_file(program_name, args)
+
+
+def _build(args):
+    input_file, cy_args, args = _parse_args(args)
+    program_name = build(input_file, cy_args)
+    return program_name, args
+
+
+if __name__ == '__main__':
+    _build(sys.argv[1:])

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Cythonize.py

@@ -0,0 +1,255 @@
+from __future__ import absolute_import, print_function
+
+import os
+import shutil
+import tempfile
+
+from .Dependencies import cythonize, extended_iglob
+from ..Utils import is_package_dir
+from ..Compiler import Options
+
+try:
+    import multiprocessing
+    parallel_compiles = int(multiprocessing.cpu_count() * 1.5)
+except ImportError:
+    multiprocessing = None
+    parallel_compiles = 0
+
+
+class _FakePool(object):
+    def map_async(self, func, args):
+        try:
+            from itertools import imap
+        except ImportError:
+            imap=map
+        for _ in imap(func, args):
+            pass
+
+    def close(self):
+        pass
+
+    def terminate(self):
+        pass
+
+    def join(self):
+        pass
+
+
+def find_package_base(path):
+    base_dir, package_path = os.path.split(path)
+    while is_package_dir(base_dir):
+        base_dir, parent = os.path.split(base_dir)
+        package_path = '%s/%s' % (parent, package_path)
+    return base_dir, package_path
+
+def cython_compile(path_pattern, options):
+    all_paths = map(os.path.abspath, extended_iglob(path_pattern))
+    _cython_compile_files(all_paths, options)
+
+def _cython_compile_files(all_paths, options):
+    pool = None
+    try:
+        for path in all_paths:
+            if options.build_inplace:
+                base_dir = path
+                while not os.path.isdir(base_dir) or is_package_dir(base_dir):
+                    base_dir = os.path.dirname(base_dir)
+            else:
+                base_dir = None
+
+            if os.path.isdir(path):
+                # recursively compiling a package
+                paths = [os.path.join(path, '**', '*.{py,pyx}')]
+            else:
+                # assume it's a file(-like thing)
+                paths = [path]
+
+            ext_modules = cythonize(
+                paths,
+                nthreads=options.parallel,
+                exclude_failures=options.keep_going,
+                exclude=options.excludes,
+                compiler_directives=options.directives,
+                compile_time_env=options.compile_time_env,
+                force=options.force,
+                quiet=options.quiet,
+                depfile=options.depfile,
+                language=options.language,
+                **options.options)
+
+            if ext_modules and options.build:
+                if len(ext_modules) > 1 and options.parallel > 1:
+                    if pool is None:
+                        try:
+                            pool = multiprocessing.Pool(options.parallel)
+                        except OSError:
+                            pool = _FakePool()
+                    pool.map_async(run_distutils, [
+                        (base_dir, [ext]) for ext in ext_modules])
+                else:
+                    run_distutils((base_dir, ext_modules))
+    except:
+        if pool is not None:
+            pool.terminate()
+        raise
+    else:
+        if pool is not None:
+            pool.close()
+            pool.join()
+
+
+def run_distutils(args):
+    try:
+        from distutils.core import setup
+    except ImportError:
+        try:
+            from setuptools import setup
+        except ImportError:
+            raise ImportError("'distutils' is not available. Please install 'setuptools' for binary builds.")
+
+    base_dir, ext_modules = args
+    script_args = ['build_ext', '-i']
+    cwd = os.getcwd()
+    temp_dir = None
+    try:
+        if base_dir:
+            os.chdir(base_dir)
+            temp_dir = tempfile.mkdtemp(dir=base_dir)
+            script_args.extend(['--build-temp', temp_dir])
+        setup(
+            script_name='setup.py',
+            script_args=script_args,
+            ext_modules=ext_modules,
+        )
+    finally:
+        if base_dir:
+            os.chdir(cwd)
+            if temp_dir and os.path.isdir(temp_dir):
+                shutil.rmtree(temp_dir)
+
+
+def create_args_parser():
+    from argparse import ArgumentParser, RawDescriptionHelpFormatter
+    from ..Compiler.CmdLine import ParseDirectivesAction, ParseOptionsAction, ParseCompileTimeEnvAction
+
+    parser = ArgumentParser(
+        formatter_class=RawDescriptionHelpFormatter,
+        epilog="""\
+Environment variables:
+  CYTHON_FORCE_REGEN: if set to 1, forces cythonize to regenerate the output files regardless
+        of modification times and changes.
+  Environment variables accepted by setuptools are supported to configure the C compiler and build:
+  https://setuptools.pypa.io/en/latest/userguide/ext_modules.html#compiler-and-linker-options"""
+    )
+
+    parser.add_argument('-X', '--directive', metavar='NAME=VALUE,...',
+                      dest='directives', default={}, type=str,
+                      action=ParseDirectivesAction,
+                      help='set a compiler directive')
+    parser.add_argument('-E', '--compile-time-env', metavar='NAME=VALUE,...',
+                      dest='compile_time_env', default={}, type=str,
+                      action=ParseCompileTimeEnvAction,
+                      help='set a compile time environment variable')
+    parser.add_argument('-s', '--option', metavar='NAME=VALUE',
+                      dest='options', default={}, type=str,
+                      action=ParseOptionsAction,
+                      help='set a cythonize option')
+    parser.add_argument('-2', dest='language_level', action='store_const', const=2, default=None,
+                      help='use Python 2 syntax mode by default')
+    parser.add_argument('-3', dest='language_level', action='store_const', const=3,
+                      help='use Python 3 syntax mode by default')
+    parser.add_argument('--3str', dest='language_level', action='store_const', const='3str',
+                      help='use Python 3 syntax mode by default')
+    parser.add_argument('-+', '--cplus', dest='language', action='store_const', const='c++', default=None,
+                        help='Compile as C++ rather than C')
+    parser.add_argument('-a', '--annotate', action='store_const', const='default', dest='annotate',
+                      help='Produce a colorized HTML version of the source.')
+    parser.add_argument('--annotate-fullc', action='store_const', const='fullc', dest='annotate',
+                      help='Produce a colorized HTML version of the source '
+                           'which includes entire generated C/C++-code.')
+    parser.add_argument('-x', '--exclude', metavar='PATTERN', dest='excludes',
+                      action='append', default=[],
+                      help='exclude certain file patterns from the compilation')
+
+    parser.add_argument('-b', '--build', dest='build', action='store_true', default=None,
+                      help='build extension modules using distutils/setuptools')
+    parser.add_argument('-i', '--inplace', dest='build_inplace', action='store_true', default=None,
+                      help='build extension modules in place using distutils/setuptools (implies -b)')
+    parser.add_argument('-j', '--parallel', dest='parallel', metavar='N',
+                      type=int, default=parallel_compiles,
+                      help=('run builds in N parallel jobs (default: %d)' %
+                            parallel_compiles or 1))
+    parser.add_argument('-f', '--force', dest='force', action='store_true', default=None,
+                      help='force recompilation')
+    parser.add_argument('-q', '--quiet', dest='quiet', action='store_true', default=None,
+                      help='be less verbose during compilation')
+
+    parser.add_argument('--lenient', dest='lenient', action='store_true', default=None,
+                      help='increase Python compatibility by ignoring some compile time errors')
+    parser.add_argument('-k', '--keep-going', dest='keep_going', action='store_true', default=None,
+                      help='compile as much as possible, ignore compilation failures')
+    parser.add_argument('--no-docstrings', dest='no_docstrings', action='store_true', default=None,
+                      help='strip docstrings')
+    parser.add_argument('-M', '--depfile', action='store_true', help='produce depfiles for the sources')
+    parser.add_argument('sources', nargs='*')
+    return parser
+
+
+def parse_args_raw(parser, args):
+    options, unknown = parser.parse_known_args(args)
+    sources = options.sources
+    # if positional arguments were interspersed
+    # some of them are in unknown
+    for option in unknown:
+        if option.startswith('-'):
+            parser.error("unknown option "+option)
+        else:
+            sources.append(option)
+    del options.sources
+    return (options, sources)
+
+
+def parse_args(args):
+    parser = create_args_parser()
+    options, args = parse_args_raw(parser, args)
+
+    if not args:
+        parser.error("no source files provided")
+    if options.build_inplace:
+        options.build = True
+    if multiprocessing is None:
+        options.parallel = 0
+    if options.language_level:
+        assert options.language_level in (2, 3, '3str')
+        options.options['language_level'] = options.language_level
+
+    if options.lenient:
+        # increase Python compatibility by ignoring compile time errors
+        Options.error_on_unknown_names = False
+        Options.error_on_uninitialized = False
+
+    if options.annotate:
+        Options.annotate = options.annotate
+
+    if options.no_docstrings:
+        Options.docstrings = False
+
+    return options, args
+
+
+def main(args=None):
+    options, paths = parse_args(args)
+
+    all_paths = []
+    for path in paths:
+        expanded_path = [os.path.abspath(p) for p in extended_iglob(path)]
+        if not expanded_path:
+            import sys
+            print("{}: No such file or directory: '{}'".format(sys.argv[0], path), file=sys.stderr)
+            sys.exit(1)
+        all_paths.extend(expanded_path)
+    _cython_compile_files(all_paths, options)
+
+
+if __name__ == '__main__':
+    main()

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Dependencies.py

@@ -0,0 +1,1380 @@
+from __future__ import absolute_import, print_function
+
+import cython
+from .. import __version__
+
+import collections
+import contextlib
+import hashlib
+import os
+import shutil
+import subprocess
+import re, sys, time
+from glob import iglob
+from io import open as io_open
+from os.path import relpath as _relpath
+import zipfile
+
+try:
+    from collections.abc import Iterable
+except ImportError:
+    from collections import Iterable
+
+try:
+    import gzip
+    gzip_open = gzip.open
+    gzip_ext = '.gz'
+except ImportError:
+    gzip_open = open
+    gzip_ext = ''
+
+try:
+    import zlib
+    zipfile_compression_mode = zipfile.ZIP_DEFLATED
+except ImportError:
+    zipfile_compression_mode = zipfile.ZIP_STORED
+
+try:
+    import pythran
+except:
+    pythran = None
+
+from .. import Utils
+from ..Utils import (cached_function, cached_method, path_exists,
+    safe_makedirs, copy_file_to_dir_if_newer, is_package_dir, write_depfile)
+from ..Compiler import Errors
+from ..Compiler.Main import Context
+from ..Compiler.Options import (CompilationOptions, default_options,
+    get_directive_defaults)
+
+join_path = cached_function(os.path.join)
+copy_once_if_newer = cached_function(copy_file_to_dir_if_newer)
+safe_makedirs_once = cached_function(safe_makedirs)
+
+if sys.version_info[0] < 3:
+    # stupid Py2 distutils enforces str type in list of sources
+    _fs_encoding = sys.getfilesystemencoding()
+    if _fs_encoding is None:
+        _fs_encoding = sys.getdefaultencoding()
+    def encode_filename_in_py2(filename):
+        if not isinstance(filename, bytes):
+            return filename.encode(_fs_encoding)
+        return filename
+else:
+    def encode_filename_in_py2(filename):
+        return filename
+    basestring = str
+
+
+def _make_relative(file_paths, base=None):
+    if not base:
+        base = os.getcwd()
+    if base[-1] != os.path.sep:
+        base += os.path.sep
+    return [_relpath(path, base) if path.startswith(base) else path
+            for path in file_paths]
+
+
+def extended_iglob(pattern):
+    if '{' in pattern:
+        m = re.match('(.*){([^}]+)}(.*)', pattern)
+        if m:
+            before, switch, after = m.groups()
+            for case in switch.split(','):
+                for path in extended_iglob(before + case + after):
+                    yield path
+            return
+
+    # We always accept '/' and also '\' on Windows,
+    # because '/' is generally common for relative paths.
+    if '**/' in pattern or os.sep == '\\' and '**\\' in pattern:
+        seen = set()
+        first, rest = re.split(r'\*\*[%s]' % ('/\\\\' if os.sep == '\\' else '/'), pattern, 1)
+        if first:
+            first = iglob(first + os.sep)
+        else:
+            first = ['']
+        for root in first:
+            for path in extended_iglob(join_path(root, rest)):
+                if path not in seen:
+                    seen.add(path)
+                    yield path
+            for path in extended_iglob(join_path(root, '*', '**', rest)):
+                if path not in seen:
+                    seen.add(path)
+                    yield path
+    else:
+        for path in iglob(pattern):
+            yield path
+
+
+def nonempty(it, error_msg="expected non-empty iterator"):
+    empty = True
+    for value in it:
+        empty = False
+        yield value
+    if empty:
+        raise ValueError(error_msg)
+
+
+@cached_function
+def file_hash(filename):
+    path = os.path.normpath(filename)
+    prefix = ('%d:%s' % (len(path), path)).encode("UTF-8")
+    m = hashlib.sha1(prefix)
+    with open(path, 'rb') as f:
+        data = f.read(65000)
+        while data:
+            m.update(data)
+            data = f.read(65000)
+    return m.hexdigest()
+
+
+def update_pythran_extension(ext):
+    if pythran is None:
+        raise RuntimeError("You first need to install Pythran to use the np_pythran directive.")
+    try:
+        pythran_ext = pythran.config.make_extension(python=True)
+    except TypeError:  # older pythran version only
+        pythran_ext = pythran.config.make_extension()
+
+    ext.include_dirs.extend(pythran_ext['include_dirs'])
+    ext.extra_compile_args.extend(pythran_ext['extra_compile_args'])
+    ext.extra_link_args.extend(pythran_ext['extra_link_args'])
+    ext.define_macros.extend(pythran_ext['define_macros'])
+    ext.undef_macros.extend(pythran_ext['undef_macros'])
+    ext.library_dirs.extend(pythran_ext['library_dirs'])
+    ext.libraries.extend(pythran_ext['libraries'])
+    ext.language = 'c++'
+
+    # These options are not compatible with the way normal Cython extensions work
+    for bad_option in ["-fwhole-program", "-fvisibility=hidden"]:
+        try:
+            ext.extra_compile_args.remove(bad_option)
+        except ValueError:
+            pass
+
+
+def parse_list(s):
+    """
+    >>> parse_list("")
+    []
+    >>> parse_list("a")
+    ['a']
+    >>> parse_list("a b c")
+    ['a', 'b', 'c']
+    >>> parse_list("[a, b, c]")
+    ['a', 'b', 'c']
+    >>> parse_list('a " " b')
+    ['a', ' ', 'b']
+    >>> parse_list('[a, ",a", "a,", ",", ]')
+    ['a', ',a', 'a,', ',']
+    """
+    if len(s) >= 2 and s[0] == '[' and s[-1] == ']':
+        s = s[1:-1]
+        delimiter = ','
+    else:
+        delimiter = ' '
+    s, literals = strip_string_literals(s)
+    def unquote(literal):
+        literal = literal.strip()
+        if literal[0] in "'\"":
+            return literals[literal[1:-1]]
+        else:
+            return literal
+    return [unquote(item) for item in s.split(delimiter) if item.strip()]
+
+
+transitive_str = object()
+transitive_list = object()
+bool_or = object()
+
+distutils_settings = {
+    'name':                 str,
+    'sources':              list,
+    'define_macros':        list,
+    'undef_macros':         list,
+    'libraries':            transitive_list,
+    'library_dirs':         transitive_list,
+    'runtime_library_dirs': transitive_list,
+    'include_dirs':         transitive_list,
+    'extra_objects':        list,
+    'extra_compile_args':   transitive_list,
+    'extra_link_args':      transitive_list,
+    'export_symbols':       list,
+    'depends':              transitive_list,
+    'language':             transitive_str,
+    'np_pythran':           bool_or
+}
+
+
+def _legacy_strtobool(val):
+    # Used to be "distutils.util.strtobool", adapted for deprecation warnings.
+    if val == "True":
+        return True
+    elif val == "False":
+        return False
+
+    import warnings
+    warnings.warn("The 'np_python' option requires 'True' or 'False'", category=DeprecationWarning)
+    val = val.lower()
+    if val in ('y', 'yes', 't', 'true', 'on', '1'):
+        return True
+    elif val in ('n', 'no', 'f', 'false', 'off', '0'):
+        return False
+    else:
+        raise ValueError("invalid truth value %r" % (val,))
+
+
+@cython.locals(start=cython.Py_ssize_t, end=cython.Py_ssize_t)
+def line_iter(source):
+    if isinstance(source, basestring):
+        start = 0
+        while True:
+            end = source.find('\n', start)
+            if end == -1:
+                yield source[start:]
+                return
+            yield source[start:end]
+            start = end+1
+    else:
+        for line in source:
+            yield line
+
+
+class DistutilsInfo(object):
+
+    def __init__(self, source=None, exn=None):
+        self.values = {}
+        if source is not None:
+            for line in line_iter(source):
+                line = line.lstrip()
+                if not line:
+                    continue
+                if line[0] != '#':
+                    break
+                line = line[1:].lstrip()
+                kind = next((k for k in ("distutils:","cython:") if line.startswith(k)), None)
+                if kind is not None:
+                    key, _, value = [s.strip() for s in line[len(kind):].partition('=')]
+                    type = distutils_settings.get(key, None)
+                    if line.startswith("cython:") and type is None: continue
+                    if type in (list, transitive_list):
+                        value = parse_list(value)
+                        if key == 'define_macros':
+                            value = [tuple(macro.split('=', 1))
+                                     if '=' in macro else (macro, None)
+                                     for macro in value]
+                    if type is bool_or:
+                        value = _legacy_strtobool(value)
+                    self.values[key] = value
+        elif exn is not None:
+            for key in distutils_settings:
+                if key in ('name', 'sources','np_pythran'):
+                    continue
+                value = getattr(exn, key, None)
+                if value:
+                    self.values[key] = value
+
+    def merge(self, other):
+        if other is None:
+            return self
+        for key, value in other.values.items():
+            type = distutils_settings[key]
+            if type is transitive_str and key not in self.values:
+                self.values[key] = value
+            elif type is transitive_list:
+                if key in self.values:
+                    # Change a *copy* of the list (Trac #845)
+                    all = self.values[key][:]
+                    for v in value:
+                        if v not in all:
+                            all.append(v)
+                    value = all
+                self.values[key] = value
+            elif type is bool_or:
+                self.values[key] = self.values.get(key, False) | value
+        return self
+
+    def subs(self, aliases):
+        if aliases is None:
+            return self
+        resolved = DistutilsInfo()
+        for key, value in self.values.items():
+            type = distutils_settings[key]
+            if type in [list, transitive_list]:
+                new_value_list = []
+                for v in value:
+                    if v in aliases:
+                        v = aliases[v]
+                    if isinstance(v, list):
+                        new_value_list += v
+                    else:
+                        new_value_list.append(v)
+                value = new_value_list
+            else:
+                if value in aliases:
+                    value = aliases[value]
+            resolved.values[key] = value
+        return resolved
+
+    def apply(self, extension):
+        for key, value in self.values.items():
+            type = distutils_settings[key]
+            if type in [list, transitive_list]:
+                value = getattr(extension, key) + list(value)
+            setattr(extension, key, value)
+
+
+@cython.locals(start=cython.Py_ssize_t, q=cython.Py_ssize_t,
+               single_q=cython.Py_ssize_t, double_q=cython.Py_ssize_t,
+               hash_mark=cython.Py_ssize_t, end=cython.Py_ssize_t,
+               k=cython.Py_ssize_t, counter=cython.Py_ssize_t, quote_len=cython.Py_ssize_t)
+def strip_string_literals(code, prefix='__Pyx_L'):
+    """
+    Normalizes every string literal to be of the form '__Pyx_Lxxx',
+    returning the normalized code and a mapping of labels to
+    string literals.
+    """
+    new_code = []
+    literals = {}
+    counter = 0
+    start = q = 0
+    in_quote = False
+    hash_mark = single_q = double_q = -1
+    code_len = len(code)
+    quote_type = None
+    quote_len = -1
+
+    while True:
+        if hash_mark < q:
+            hash_mark = code.find('#', q)
+        if single_q < q:
+            single_q = code.find("'", q)
+        if double_q < q:
+            double_q = code.find('"', q)
+        q = min(single_q, double_q)
+        if q == -1:
+            q = max(single_q, double_q)
+
+        # We're done.
+        if q == -1 and hash_mark == -1:
+            new_code.append(code[start:])
+            break
+
+        # Try to close the quote.
+        elif in_quote:
+            if code[q-1] == u'\\':
+                k = 2
+                while q >= k and code[q-k] == u'\\':
+                    k += 1
+                if k % 2 == 0:
+                    q += 1
+                    continue
+            if code[q] == quote_type and (
+                    quote_len == 1 or (code_len > q + 2 and quote_type == code[q+1] == code[q+2])):
+                counter += 1
+                label = "%s%s_" % (prefix, counter)
+                literals[label] = code[start+quote_len:q]
+                full_quote = code[q:q+quote_len]
+                new_code.append(full_quote)
+                new_code.append(label)
+                new_code.append(full_quote)
+                q += quote_len
+                in_quote = False
+                start = q
+            else:
+                q += 1
+
+        # Process comment.
+        elif -1 != hash_mark and (hash_mark < q or q == -1):
+            new_code.append(code[start:hash_mark+1])
+            end = code.find('\n', hash_mark)
+            counter += 1
+            label = "%s%s_" % (prefix, counter)
+            if end == -1:
+                end_or_none = None
+            else:
+                end_or_none = end
+            literals[label] = code[hash_mark+1:end_or_none]
+            new_code.append(label)
+            if end == -1:
+                break
+            start = q = end
+
+        # Open the quote.
+        else:
+            if code_len >= q+3 and (code[q] == code[q+1] == code[q+2]):
+                quote_len = 3
+            else:
+                quote_len = 1
+            in_quote = True
+            quote_type = code[q]
+            new_code.append(code[start:q])
+            start = q
+            q += quote_len
+
+    return "".join(new_code), literals
+
+
+# We need to allow spaces to allow for conditional compilation like
+# IF ...:
+#     cimport ...
+dependency_regex = re.compile(r"(?:^\s*from +([0-9a-zA-Z_.]+) +cimport)|"
+                              r"(?:^\s*cimport +([0-9a-zA-Z_.]+(?: *, *[0-9a-zA-Z_.]+)*))|"
+                              r"(?:^\s*cdef +extern +from +['\"]([^'\"]+)['\"])|"
+                              r"(?:^\s*include +['\"]([^'\"]+)['\"])", re.M)
+dependency_after_from_regex = re.compile(
+    r"(?:^\s+\(([0-9a-zA-Z_., ]*)\)[#\n])|"
+    r"(?:^\s+([0-9a-zA-Z_., ]*)[#\n])",
+    re.M)
+
+
+def normalize_existing(base_path, rel_paths):
+    return normalize_existing0(os.path.dirname(base_path), tuple(set(rel_paths)))
+
+
+@cached_function
+def normalize_existing0(base_dir, rel_paths):
+    """
+    Given some base directory ``base_dir`` and a list of path names
+    ``rel_paths``, normalize each relative path name ``rel`` by
+    replacing it by ``os.path.join(base, rel)`` if that file exists.
+
+    Return a couple ``(normalized, needed_base)`` where ``normalized``
+    if the list of normalized file names and ``needed_base`` is
+    ``base_dir`` if we actually needed ``base_dir``. If no paths were
+    changed (for example, if all paths were already absolute), then
+    ``needed_base`` is ``None``.
+    """
+    normalized = []
+    needed_base = None
+    for rel in rel_paths:
+        if os.path.isabs(rel):
+            normalized.append(rel)
+            continue
+        path = join_path(base_dir, rel)
+        if path_exists(path):
+            normalized.append(os.path.normpath(path))
+            needed_base = base_dir
+        else:
+            normalized.append(rel)
+    return (normalized, needed_base)
+
+
+def resolve_depends(depends, include_dirs):
+    include_dirs = tuple(include_dirs)
+    resolved = []
+    for depend in depends:
+        path = resolve_depend(depend, include_dirs)
+        if path is not None:
+            resolved.append(path)
+    return resolved
+
+
+@cached_function
+def resolve_depend(depend, include_dirs):
+    if depend[0] == '<' and depend[-1] == '>':
+        return None
+    for dir in include_dirs:
+        path = join_path(dir, depend)
+        if path_exists(path):
+            return os.path.normpath(path)
+    return None
+
+
+@cached_function
+def package(filename):
+    dir = os.path.dirname(os.path.abspath(str(filename)))
+    if dir != filename and is_package_dir(dir):
+        return package(dir) + (os.path.basename(dir),)
+    else:
+        return ()
+
+
+@cached_function
+def fully_qualified_name(filename):
+    module = os.path.splitext(os.path.basename(filename))[0]
+    return '.'.join(package(filename) + (module,))
+
+
+@cached_function
+def parse_dependencies(source_filename):
+    # Actual parsing is way too slow, so we use regular expressions.
+    # The only catch is that we must strip comments and string
+    # literals ahead of time.
+    with Utils.open_source_file(source_filename, error_handling='ignore') as fh:
+        source = fh.read()
+    distutils_info = DistutilsInfo(source)
+    source, literals = strip_string_literals(source)
+    source = source.replace('\\\n', ' ').replace('\t', ' ')
+
+    # TODO: pure mode
+    cimports = []
+    includes = []
+    externs  = []
+    for m in dependency_regex.finditer(source):
+        cimport_from, cimport_list, extern, include = m.groups()
+        if cimport_from:
+            cimports.append(cimport_from)
+            m_after_from = dependency_after_from_regex.search(source, pos=m.end())
+            if m_after_from:
+                multiline, one_line = m_after_from.groups()
+                subimports = multiline or one_line
+                cimports.extend("{0}.{1}".format(cimport_from, s.strip())
+                                for s in subimports.split(','))
+
+        elif cimport_list:
+            cimports.extend(x.strip() for x in cimport_list.split(","))
+        elif extern:
+            externs.append(literals[extern])
+        else:
+            includes.append(literals[include])
+    return cimports, includes, externs, distutils_info
+
+
+class DependencyTree(object):
+
+    def __init__(self, context, quiet=False):
+        self.context = context
+        self.quiet = quiet
+        self._transitive_cache = {}
+
+    def parse_dependencies(self, source_filename):
+        if path_exists(source_filename):
+            source_filename = os.path.normpath(source_filename)
+        return parse_dependencies(source_filename)
+
+    @cached_method
+    def included_files(self, filename):
+        # This is messy because included files are textually included, resolving
+        # cimports (but not includes) relative to the including file.
+        all = set()
+        for include in self.parse_dependencies(filename)[1]:
+            include_path = join_path(os.path.dirname(filename), include)
+            if not path_exists(include_path):
+                include_path = self.context.find_include_file(include, source_file_path=filename)
+            if include_path:
+                if '.' + os.path.sep in include_path:
+                    include_path = os.path.normpath(include_path)
+                all.add(include_path)
+                all.update(self.included_files(include_path))
+            elif not self.quiet:
+                print(u"Unable to locate '%s' referenced from '%s'" % (filename, include))
+        return all
+
+    @cached_method
+    def cimports_externs_incdirs(self, filename):
+        # This is really ugly. Nested cimports are resolved with respect to the
+        # includer, but includes are resolved with respect to the includee.
+        cimports, includes, externs = self.parse_dependencies(filename)[:3]
+        cimports = set(cimports)
+        externs = set(externs)
+        incdirs = set()
+        for include in self.included_files(filename):
+            included_cimports, included_externs, included_incdirs = self.cimports_externs_incdirs(include)
+            cimports.update(included_cimports)
+            externs.update(included_externs)
+            incdirs.update(included_incdirs)
+        externs, incdir = normalize_existing(filename, externs)
+        if incdir:
+            incdirs.add(incdir)
+        return tuple(cimports), externs, incdirs
+
+    def cimports(self, filename):
+        return self.cimports_externs_incdirs(filename)[0]
+
+    def package(self, filename):
+        return package(filename)
+
+    def fully_qualified_name(self, filename):
+        return fully_qualified_name(filename)
+
+    @cached_method
+    def find_pxd(self, module, filename=None):
+        is_relative = module[0] == '.'
+        if is_relative and not filename:
+            raise NotImplementedError("New relative imports.")
+        if filename is not None:
+            module_path = module.split('.')
+            if is_relative:
+                module_path.pop(0)  # just explicitly relative
+            package_path = list(self.package(filename))
+            while module_path and not module_path[0]:
+                try:
+                    package_path.pop()
+                except IndexError:
+                    return None   # FIXME: error?
+                module_path.pop(0)
+            relative = '.'.join(package_path + module_path)
+            pxd = self.context.find_pxd_file(relative, source_file_path=filename)
+            if pxd:
+                return pxd
+        if is_relative:
+            return None   # FIXME: error?
+        return self.context.find_pxd_file(module, source_file_path=filename)
+
+    @cached_method
+    def cimported_files(self, filename):
+        filename_root, filename_ext = os.path.splitext(filename)
+        if filename_ext in ('.pyx', '.py') and path_exists(filename_root + '.pxd'):
+            pxd_list = [filename_root + '.pxd']
+        else:
+            pxd_list = []
+        # Cimports generates all possible combinations package.module
+        # when imported as from package cimport module.
+        for module in self.cimports(filename):
+            if module[:7] == 'cython.' or module == 'cython':
+                continue
+            pxd_file = self.find_pxd(module, filename)
+            if pxd_file is not None:
+                pxd_list.append(pxd_file)
+        return tuple(pxd_list)
+
+    @cached_method
+    def immediate_dependencies(self, filename):
+        all_deps = {filename}
+        all_deps.update(self.cimported_files(filename))
+        all_deps.update(self.included_files(filename))
+        return all_deps
+
+    def all_dependencies(self, filename):
+        return self.transitive_merge(filename, self.immediate_dependencies, set.union)
+
+    @cached_method
+    def timestamp(self, filename):
+        return os.path.getmtime(filename)
+
+    def extract_timestamp(self, filename):
+        return self.timestamp(filename), filename
+
+    def newest_dependency(self, filename):
+        return max([self.extract_timestamp(f) for f in self.all_dependencies(filename)])
+
+    def transitive_fingerprint(self, filename, module, compilation_options):
+        r"""
+        Return a fingerprint of a cython file that is about to be cythonized.
+
+        Fingerprints are looked up in future compilations. If the fingerprint
+        is found, the cythonization can be skipped. The fingerprint must
+        incorporate everything that has an influence on the generated code.
+        """
+        try:
+            m = hashlib.sha1(__version__.encode('UTF-8'))
+            m.update(file_hash(filename).encode('UTF-8'))
+            for x in sorted(self.all_dependencies(filename)):
+                if os.path.splitext(x)[1] not in ('.c', '.cpp', '.h'):
+                    m.update(file_hash(x).encode('UTF-8'))
+            # Include the module attributes that change the compilation result
+            # in the fingerprint. We do not iterate over module.__dict__ and
+            # include almost everything here as users might extend Extension
+            # with arbitrary (random) attributes that would lead to cache
+            # misses.
+            m.update(str((
+                module.language,
+                getattr(module, 'py_limited_api', False),
+                getattr(module, 'np_pythran', False)
+            )).encode('UTF-8'))
+
+            m.update(compilation_options.get_fingerprint().encode('UTF-8'))
+            return m.hexdigest()
+        except IOError:
+            return None
+
+    def distutils_info0(self, filename):
+        info = self.parse_dependencies(filename)[3]
+        kwds = info.values
+        cimports, externs, incdirs = self.cimports_externs_incdirs(filename)
+        basedir = os.getcwd()
+        # Add dependencies on "cdef extern from ..." files
+        if externs:
+            externs = _make_relative(externs, basedir)
+            if 'depends' in kwds:
+                kwds['depends'] = list(set(kwds['depends']).union(externs))
+            else:
+                kwds['depends'] = list(externs)
+        # Add include_dirs to ensure that the C compiler will find the
+        # "cdef extern from ..." files
+        if incdirs:
+            include_dirs = list(kwds.get('include_dirs', []))
+            for inc in _make_relative(incdirs, basedir):
+                if inc not in include_dirs:
+                    include_dirs.append(inc)
+            kwds['include_dirs'] = include_dirs
+        return info
+
+    def distutils_info(self, filename, aliases=None, base=None):
+        return (self.transitive_merge(filename, self.distutils_info0, DistutilsInfo.merge)
+            .subs(aliases)
+            .merge(base))
+
+    def transitive_merge(self, node, extract, merge):
+        try:
+            seen = self._transitive_cache[extract, merge]
+        except KeyError:
+            seen = self._transitive_cache[extract, merge] = {}
+        return self.transitive_merge_helper(
+            node, extract, merge, seen, {}, self.cimported_files)[0]
+
+    def transitive_merge_helper(self, node, extract, merge, seen, stack, outgoing):
+        if node in seen:
+            return seen[node], None
+        deps = extract(node)
+        if node in stack:
+            return deps, node
+        try:
+            stack[node] = len(stack)
+            loop = None
+            for next in outgoing(node):
+                sub_deps, sub_loop = self.transitive_merge_helper(next, extract, merge, seen, stack, outgoing)
+                if sub_loop is not None:
+                    if loop is not None and stack[loop] < stack[sub_loop]:
+                        pass
+                    else:
+                        loop = sub_loop
+                deps = merge(deps, sub_deps)
+            if loop == node:
+                loop = None
+            if loop is None:
+                seen[node] = deps
+            return deps, loop
+        finally:
+            del stack[node]
+
+
+_dep_tree = None
+
+def create_dependency_tree(ctx=None, quiet=False):
+    global _dep_tree
+    if _dep_tree is None:
+        if ctx is None:
+            ctx = Context(["."], get_directive_defaults(),
+                          options=CompilationOptions(default_options))
+        _dep_tree = DependencyTree(ctx, quiet=quiet)
+    return _dep_tree
+
+
+# If this changes, change also docs/src/reference/compilation.rst
+# which mentions this function
+def default_create_extension(template, kwds):
+    if 'depends' in kwds:
+        include_dirs = kwds.get('include_dirs', []) + ["."]
+        depends = resolve_depends(kwds['depends'], include_dirs)
+        kwds['depends'] = sorted(set(depends + template.depends))
+
+    t = template.__class__
+    ext = t(**kwds)
+    metadata = dict(distutils=kwds, module_name=kwds['name'])
+    return (ext, metadata)
+
+
+# This may be useful for advanced users?
+def create_extension_list(patterns, exclude=None, ctx=None, aliases=None, quiet=False, language=None,
+                          exclude_failures=False):
+    if language is not None:
+        print('Warning: passing language={0!r} to cythonize() is deprecated. '
+              'Instead, put "# distutils: language={0}" in your .pyx or .pxd file(s)'.format(language))
+    if exclude is None:
+        exclude = []
+    if patterns is None:
+        return [], {}
+    elif isinstance(patterns, basestring) or not isinstance(patterns, Iterable):
+        patterns = [patterns]
+
+    from distutils.extension import Extension
+    if 'setuptools' in sys.modules:
+        # Support setuptools Extension instances as well.
+        extension_classes = (
+            Extension,  # should normally be the same as 'setuptools.extension._Extension'
+            sys.modules['setuptools.extension']._Extension,
+            sys.modules['setuptools'].Extension,
+        )
+    else:
+        extension_classes = (Extension,)
+
+    explicit_modules = {m.name for m in patterns if isinstance(m, extension_classes)}
+    deps = create_dependency_tree(ctx, quiet=quiet)
+
+    to_exclude = set()
+    if not isinstance(exclude, list):
+        exclude = [exclude]
+    for pattern in exclude:
+        to_exclude.update(map(os.path.abspath, extended_iglob(pattern)))
+
+    module_list = []
+    module_metadata = {}
+
+    # if no create_extension() function is defined, use a simple
+    # default function.
+    create_extension = ctx.options.create_extension or default_create_extension
+
+    seen = set()
+    for pattern in patterns:
+        if not isinstance(pattern, extension_classes):
+            pattern = encode_filename_in_py2(pattern)
+        if isinstance(pattern, str):
+            filepattern = pattern
+            template = Extension(pattern, [])  # Fake Extension without sources
+            name = '*'
+            base = None
+            ext_language = language
+        elif isinstance(pattern, extension_classes):
+            cython_sources = [s for s in pattern.sources
+                              if os.path.splitext(s)[1] in ('.py', '.pyx')]
+            if cython_sources:
+                filepattern = cython_sources[0]
+                if len(cython_sources) > 1:
+                    print(u"Warning: Multiple cython sources found for extension '%s': %s\n"
+                          u"See https://cython.readthedocs.io/en/latest/src/userguide/sharing_declarations.html "
+                          u"for sharing declarations among Cython files." % (pattern.name, cython_sources))
+            else:
+                # ignore non-cython modules
+                module_list.append(pattern)
+                continue
+            template = pattern
+            name = template.name
+            base = DistutilsInfo(exn=template)
+            ext_language = None  # do not override whatever the Extension says
+        else:
+            msg = str("pattern is not of type str nor subclass of Extension (%s)"
+                      " but of type %s and class %s" % (repr(Extension),
+                                                        type(pattern),
+                                                        pattern.__class__))
+            raise TypeError(msg)
+
+        for file in nonempty(sorted(extended_iglob(filepattern)), "'%s' doesn't match any files" % filepattern):
+            if os.path.abspath(file) in to_exclude:
+                continue
+            module_name = deps.fully_qualified_name(file)
+            if '*' in name:
+                if module_name in explicit_modules:
+                    continue
+            elif name:
+                module_name = name
+
+            Utils.raise_error_if_module_name_forbidden(module_name)
+
+            if module_name not in seen:
+                try:
+                    kwds = deps.distutils_info(file, aliases, base).values
+                except Exception:
+                    if exclude_failures:
+                        continue
+                    raise
+                if base is not None:
+                    for key, value in base.values.items():
+                        if key not in kwds:
+                            kwds[key] = value
+
+                kwds['name'] = module_name
+
+                sources = [file] + [m for m in template.sources if m != filepattern]
+                if 'sources' in kwds:
+                    # allow users to add .c files etc.
+                    for source in kwds['sources']:
+                        source = encode_filename_in_py2(source)
+                        if source not in sources:
+                            sources.append(source)
+                kwds['sources'] = sources
+
+                if ext_language and 'language' not in kwds:
+                    kwds['language'] = ext_language
+
+                np_pythran = kwds.pop('np_pythran', False)
+
+                # Create the new extension
+                m, metadata = create_extension(template, kwds)
+                m.np_pythran = np_pythran or getattr(m, 'np_pythran', False)
+                if m.np_pythran:
+                    update_pythran_extension(m)
+                module_list.append(m)
+
+                # Store metadata (this will be written as JSON in the
+                # generated C file but otherwise has no purpose)
+                module_metadata[module_name] = metadata
+
+                if file not in m.sources:
+                    # Old setuptools unconditionally replaces .pyx with .c/.cpp
+                    target_file = os.path.splitext(file)[0] + ('.cpp' if m.language == 'c++' else '.c')
+                    try:
+                        m.sources.remove(target_file)
+                    except ValueError:
+                        # never seen this in the wild, but probably better to warn about this unexpected case
+                        print(u"Warning: Cython source file not found in sources list, adding %s" % file)
+                    m.sources.insert(0, file)
+                seen.add(name)
+    return module_list, module_metadata
+
+
+# This is the user-exposed entry point.
+def cythonize(module_list, exclude=None, nthreads=0, aliases=None, quiet=False, force=None, language=None,
+              exclude_failures=False, show_all_warnings=False, **options):
+    """
+    Compile a set of source modules into C/C++ files and return a list of distutils
+    Extension objects for them.
+
+    :param module_list: As module list, pass either a glob pattern, a list of glob
+                        patterns or a list of Extension objects.  The latter
+                        allows you to configure the extensions separately
+                        through the normal distutils options.
+                        You can also pass Extension objects that have
+                        glob patterns as their sources. Then, cythonize
+                        will resolve the pattern and create a
+                        copy of the Extension for every matching file.
+
+    :param exclude: When passing glob patterns as ``module_list``, you can exclude certain
+                    module names explicitly by passing them into the ``exclude`` option.
+
+    :param nthreads: The number of concurrent builds for parallel compilation
+                     (requires the ``multiprocessing`` module).
+
+    :param aliases: If you want to use compiler directives like ``# distutils: ...`` but
+                    can only know at compile time (when running the ``setup.py``) which values
+                    to use, you can use aliases and pass a dictionary mapping those aliases
+                    to Python strings when calling :func:`cythonize`. As an example, say you
+                    want to use the compiler
+                    directive ``# distutils: include_dirs = ../static_libs/include/``
+                    but this path isn't always fixed and you want to find it when running
+                    the ``setup.py``. You can then do ``# distutils: include_dirs = MY_HEADERS``,
+                    find the value of ``MY_HEADERS`` in the ``setup.py``, put it in a python
+                    variable called ``foo`` as a string, and then call
+                    ``cythonize(..., aliases={'MY_HEADERS': foo})``.
+
+    :param quiet: If True, Cython won't print error, warning, or status messages during the
+                  compilation.
+
+    :param force: Forces the recompilation of the Cython modules, even if the timestamps
+                  don't indicate that a recompilation is necessary.
+
+    :param language: To globally enable C++ mode, you can pass ``language='c++'``. Otherwise, this
+                     will be determined at a per-file level based on compiler directives.  This
+                     affects only modules found based on file names.  Extension instances passed
+                     into :func:`cythonize` will not be changed. It is recommended to rather
+                     use the compiler directive ``# distutils: language = c++`` than this option.
+
+    :param exclude_failures: For a broad 'try to compile' mode that ignores compilation
+                             failures and simply excludes the failed extensions,
+                             pass ``exclude_failures=True``. Note that this only
+                             really makes sense for compiling ``.py`` files which can also
+                             be used without compilation.
+
+    :param show_all_warnings: By default, not all Cython warnings are printed.
+                              Set to true to show all warnings.
+
+    :param annotate: If ``True``, will produce a HTML file for each of the ``.pyx`` or ``.py``
+                     files compiled. The HTML file gives an indication
+                     of how much Python interaction there is in
+                     each of the source code lines, compared to plain C code.
+                     It also allows you to see the C/C++ code
+                     generated for each line of Cython code. This report is invaluable when
+                     optimizing a function for speed,
+                     and for determining when to :ref:`release the GIL <nogil>`:
+                     in general, a ``nogil`` block may contain only "white" code.
+                     See examples in :ref:`determining_where_to_add_types` or
+                     :ref:`primes`.
+
+
+    :param annotate-fullc: If ``True`` will produce a colorized HTML version of
+                           the source which includes entire generated C/C++-code.
+
+
+    :param compiler_directives: Allow to set compiler directives in the ``setup.py`` like this:
+                                ``compiler_directives={'embedsignature': True}``.
+                                See :ref:`compiler-directives`.
+
+    :param depfile: produce depfiles for the sources if True.
+    """
+    if exclude is None:
+        exclude = []
+    if 'include_path' not in options:
+        options['include_path'] = ['.']
+    if 'common_utility_include_dir' in options:
+        safe_makedirs(options['common_utility_include_dir'])
+
+    depfile = options.pop('depfile', None)
+
+    if pythran is None:
+        pythran_options = None
+    else:
+        pythran_options = CompilationOptions(**options)
+        pythran_options.cplus = True
+        pythran_options.np_pythran = True
+
+    if force is None:
+        force = os.environ.get("CYTHON_FORCE_REGEN") == "1"  # allow global overrides for build systems
+
+    c_options = CompilationOptions(**options)
+    cpp_options = CompilationOptions(**options); cpp_options.cplus = True
+    ctx = Context.from_options(c_options)
+    options = c_options
+    module_list, module_metadata = create_extension_list(
+        module_list,
+        exclude=exclude,
+        ctx=ctx,
+        quiet=quiet,
+        exclude_failures=exclude_failures,
+        language=language,
+        aliases=aliases)
+
+    fix_windows_unicode_modules(module_list)
+
+    deps = create_dependency_tree(ctx, quiet=quiet)
+    build_dir = getattr(options, 'build_dir', None)
+
+    def copy_to_build_dir(filepath, root=os.getcwd()):
+        filepath_abs = os.path.abspath(filepath)
+        if os.path.isabs(filepath):
+            filepath = filepath_abs
+        if filepath_abs.startswith(root):
+            # distutil extension depends are relative to cwd
+            mod_dir = join_path(build_dir,
+                                os.path.dirname(_relpath(filepath, root)))
+            copy_once_if_newer(filepath_abs, mod_dir)
+
+    modules_by_cfile = collections.defaultdict(list)
+    to_compile = []
+    for m in module_list:
+        if build_dir:
+            for dep in m.depends:
+                copy_to_build_dir(dep)
+
+        cy_sources = [
+            source for source in m.sources
+            if os.path.splitext(source)[1] in ('.pyx', '.py')]
+        if len(cy_sources) == 1:
+            # normal "special" case: believe the Extension module name to allow user overrides
+            full_module_name = m.name
+        else:
+            # infer FQMN from source files
+            full_module_name = None
+
+        new_sources = []
+        for source in m.sources:
+            base, ext = os.path.splitext(source)
+            if ext in ('.pyx', '.py'):
+                if m.np_pythran:
+                    c_file = base + '.cpp'
+                    options = pythran_options
+                elif m.language == 'c++':
+                    c_file = base + '.cpp'
+                    options = cpp_options
+                else:
+                    c_file = base + '.c'
+                    options = c_options
+
+                # setup for out of place build directory if enabled
+                if build_dir:
+                    if os.path.isabs(c_file):
+                        c_file = os.path.splitdrive(c_file)[1]
+                        c_file = c_file.split(os.sep, 1)[1]
+                    c_file = os.path.join(build_dir, c_file)
+                    dir = os.path.dirname(c_file)
+                    safe_makedirs_once(dir)
+
+                # write out the depfile, if requested
+                if depfile:
+                    dependencies = deps.all_dependencies(source)
+                    write_depfile(c_file, source, dependencies)
+
+                # Missing files and those generated by other Cython versions should always be recreated.
+                if Utils.file_generated_by_this_cython(c_file):
+                    c_timestamp = os.path.getmtime(c_file)
+                else:
+                    c_timestamp = -1
+
+                # Priority goes first to modified files, second to direct
+                # dependents, and finally to indirect dependents.
+                if c_timestamp < deps.timestamp(source):
+                    dep_timestamp, dep = deps.timestamp(source), source
+                    priority = 0
+                else:
+                    dep_timestamp, dep = deps.newest_dependency(source)
+                    priority = 2 - (dep in deps.immediate_dependencies(source))
+                if force or c_timestamp < dep_timestamp:
+                    if not quiet and not force:
+                        if source == dep:
+                            print(u"Compiling %s because it changed." % Utils.decode_filename(source))
+                        else:
+                            print(u"Compiling %s because it depends on %s." % (
+                                Utils.decode_filename(source),
+                                Utils.decode_filename(dep),
+                            ))
+                    if not force and options.cache:
+                        fingerprint = deps.transitive_fingerprint(source, m, options)
+                    else:
+                        fingerprint = None
+                    to_compile.append((
+                        priority, source, c_file, fingerprint, quiet,
+                        options, not exclude_failures, module_metadata.get(m.name),
+                        full_module_name, show_all_warnings))
+                new_sources.append(c_file)
+                modules_by_cfile[c_file].append(m)
+            else:
+                new_sources.append(source)
+                if build_dir:
+                    copy_to_build_dir(source)
+        m.sources = new_sources
+
+    if options.cache:
+        if not os.path.exists(options.cache):
+            os.makedirs(options.cache)
+    to_compile.sort()
+    # Drop "priority" component of "to_compile" entries and add a
+    # simple progress indicator.
+    N = len(to_compile)
+    progress_fmt = "[{0:%d}/{1}] " % len(str(N))
+    for i in range(N):
+        progress = progress_fmt.format(i+1, N)
+        to_compile[i] = to_compile[i][1:] + (progress,)
+
+    if N <= 1:
+        nthreads = 0
+    if nthreads:
+        import multiprocessing
+        pool = multiprocessing.Pool(
+            nthreads, initializer=_init_multiprocessing_helper)
+        # This is a bit more involved than it should be, because KeyboardInterrupts
+        # break the multiprocessing workers when using a normal pool.map().
+        # See, for example:
+        # https://noswap.com/blog/python-multiprocessing-keyboardinterrupt
+        try:
+            result = pool.map_async(cythonize_one_helper, to_compile, chunksize=1)
+            pool.close()
+            while not result.ready():
+                try:
+                    result.get(99999)  # seconds
+                except multiprocessing.TimeoutError:
+                    pass
+        except KeyboardInterrupt:
+            pool.terminate()
+            raise
+        pool.join()
+    else:
+        for args in to_compile:
+            cythonize_one(*args)
+
+    if exclude_failures:
+        failed_modules = set()
+        for c_file, modules in modules_by_cfile.items():
+            if not os.path.exists(c_file):
+                failed_modules.update(modules)
+            elif os.path.getsize(c_file) < 200:
+                f = io_open(c_file, 'r', encoding='iso8859-1')
+                try:
+                    if f.read(len('#error ')) == '#error ':
+                        # dead compilation result
+                        failed_modules.update(modules)
+                finally:
+                    f.close()
+        if failed_modules:
+            for module in failed_modules:
+                module_list.remove(module)
+            print(u"Failed compilations: %s" % ', '.join(sorted([
+                module.name for module in failed_modules])))
+
+    if options.cache:
+        cleanup_cache(options.cache, getattr(options, 'cache_size', 1024 * 1024 * 100))
+    # cythonize() is often followed by the (non-Python-buffered)
+    # compiler output, flush now to avoid interleaving output.
+    sys.stdout.flush()
+    return module_list
+
+
+def fix_windows_unicode_modules(module_list):
+    # Hack around a distutils 3.[5678] bug on Windows for unicode module names.
+    # https://bugs.python.org/issue39432
+    if sys.platform != "win32":
+        return
+    if sys.version_info < (3, 5) or sys.version_info >= (3, 8, 2):
+        return
+
+    def make_filtered_list(ignored_symbol, old_entries):
+        class FilteredExportSymbols(list):
+            # export_symbols for unicode filename cause link errors on Windows
+            # Cython doesn't need them (it already defines PyInit with the correct linkage)
+            # so use this class as a temporary fix to stop them from being generated
+            def __contains__(self, val):
+                # so distutils doesn't "helpfully" add PyInit_<name>
+                return val == ignored_symbol or list.__contains__(self, val)
+
+        filtered_list = FilteredExportSymbols(old_entries)
+        if old_entries:
+            filtered_list.extend(name for name in old_entries if name != ignored_symbol)
+        return filtered_list
+
+    for m in module_list:
+        # TODO: use m.name.isascii() in Py3.7+
+        try:
+            m.name.encode("ascii")
+            continue
+        except UnicodeEncodeError:
+            pass
+        m.export_symbols = make_filtered_list(
+            "PyInit_" + m.name.rsplit(".", 1)[-1],
+            m.export_symbols,
+        )
+
+
+if os.environ.get('XML_RESULTS'):
+    compile_result_dir = os.environ['XML_RESULTS']
+    def record_results(func):
+        def with_record(*args):
+            t = time.time()
+            success = True
+            try:
+                try:
+                    func(*args)
+                except:
+                    success = False
+            finally:
+                t = time.time() - t
+                module = fully_qualified_name(args[0])
+                name = "cythonize." + module
+                failures = 1 - success
+                if success:
+                    failure_item = ""
+                else:
+                    failure_item = "failure"
+                output = open(os.path.join(compile_result_dir, name + ".xml"), "w")
+                output.write("""
+                    <?xml version="1.0" ?>
+                    <testsuite name="%(name)s" errors="0" failures="%(failures)s" tests="1" time="%(t)s">
+                    <testcase classname="%(name)s" name="cythonize">
+                    %(failure_item)s
+                    </testcase>
+                    </testsuite>
+                """.strip() % locals())
+                output.close()
+        return with_record
+else:
+    def record_results(func):
+        return func
+
+
+# TODO: Share context? Issue: pyx processing leaks into pxd module
+@record_results
+def cythonize_one(pyx_file, c_file, fingerprint, quiet, options=None,
+                  raise_on_failure=True, embedded_metadata=None,
+                  full_module_name=None, show_all_warnings=False,
+                  progress=""):
+    from ..Compiler.Main import compile_single, default_options
+    from ..Compiler.Errors import CompileError, PyrexError
+
+    if fingerprint:
+        if not os.path.exists(options.cache):
+            safe_makedirs(options.cache)
+        # Cython-generated c files are highly compressible.
+        # (E.g. a compression ratio of about 10 for Sage).
+        fingerprint_file_base = join_path(
+            options.cache, "%s-%s" % (os.path.basename(c_file), fingerprint))
+        gz_fingerprint_file = fingerprint_file_base + gzip_ext
+        zip_fingerprint_file = fingerprint_file_base + '.zip'
+        if os.path.exists(gz_fingerprint_file) or os.path.exists(zip_fingerprint_file):
+            if not quiet:
+                print(u"%sFound compiled %s in cache" % (progress, pyx_file))
+            if os.path.exists(gz_fingerprint_file):
+                os.utime(gz_fingerprint_file, None)
+                with contextlib.closing(gzip_open(gz_fingerprint_file, 'rb')) as g:
+                    with contextlib.closing(open(c_file, 'wb')) as f:
+                        shutil.copyfileobj(g, f)
+            else:
+                os.utime(zip_fingerprint_file, None)
+                dirname = os.path.dirname(c_file)
+                with contextlib.closing(zipfile.ZipFile(zip_fingerprint_file)) as z:
+                    for artifact in z.namelist():
+                        z.extract(artifact, os.path.join(dirname, artifact))
+            return
+    if not quiet:
+        print(u"%sCythonizing %s" % (progress, Utils.decode_filename(pyx_file)))
+    if options is None:
+        options = CompilationOptions(default_options)
+    options.output_file = c_file
+    options.embedded_metadata = embedded_metadata
+
+    old_warning_level = Errors.LEVEL
+    if show_all_warnings:
+        Errors.LEVEL = 0
+
+    any_failures = 0
+    try:
+        result = compile_single(pyx_file, options, full_module_name=full_module_name)
+        if result.num_errors > 0:
+            any_failures = 1
+    except (EnvironmentError, PyrexError) as e:
+        sys.stderr.write('%s\n' % e)
+        any_failures = 1
+        # XXX
+        import traceback
+        traceback.print_exc()
+    except Exception:
+        if raise_on_failure:
+            raise
+        import traceback
+        traceback.print_exc()
+        any_failures = 1
+    finally:
+        if show_all_warnings:
+            Errors.LEVEL = old_warning_level
+
+    if any_failures:
+        if raise_on_failure:
+            raise CompileError(None, pyx_file)
+        elif os.path.exists(c_file):
+            os.remove(c_file)
+    elif fingerprint:
+        artifacts = list(filter(None, [
+            getattr(result, attr, None)
+            for attr in ('c_file', 'h_file', 'api_file', 'i_file')]))
+        if len(artifacts) == 1:
+            fingerprint_file = gz_fingerprint_file
+            with contextlib.closing(open(c_file, 'rb')) as f:
+                with contextlib.closing(gzip_open(fingerprint_file + '.tmp', 'wb')) as g:
+                    shutil.copyfileobj(f, g)
+        else:
+            fingerprint_file = zip_fingerprint_file
+            with contextlib.closing(zipfile.ZipFile(
+                    fingerprint_file + '.tmp', 'w', zipfile_compression_mode)) as zip:
+                for artifact in artifacts:
+                    zip.write(artifact, os.path.basename(artifact))
+        os.rename(fingerprint_file + '.tmp', fingerprint_file)
+
+
+def cythonize_one_helper(m):
+    import traceback
+    try:
+        return cythonize_one(*m)
+    except Exception:
+        traceback.print_exc()
+        raise
+
+
+def _init_multiprocessing_helper():
+    # KeyboardInterrupt kills workers, so don't let them get it
+    import signal
+    signal.signal(signal.SIGINT, signal.SIG_IGN)
+
+
+def cleanup_cache(cache, target_size, ratio=.85):
+    try:
+        p = subprocess.Popen(['du', '-s', '-k', os.path.abspath(cache)], stdout=subprocess.PIPE)
+        stdout, _ = p.communicate()
+        res = p.wait()
+        if res == 0:
+            total_size = 1024 * int(stdout.strip().split()[0])
+            if total_size < target_size:
+                return
+    except (OSError, ValueError):
+        pass
+    total_size = 0
+    all = []
+    for file in os.listdir(cache):
+        path = join_path(cache, file)
+        s = os.stat(path)
+        total_size += s.st_size
+        all.append((s.st_atime, s.st_size, path))
+    if total_size > target_size:
+        for time, size, file in reversed(sorted(all)):
+            os.unlink(file)
+            total_size -= size
+            if total_size < target_size * ratio:
+                break

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Distutils.py

@@ -0,0 +1 @@
+from Cython.Distutils.build_ext import build_ext

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Inline.py

@@ -0,0 +1,367 @@
+from __future__ import absolute_import
+
+import hashlib
+import inspect
+import os
+import re
+import sys
+
+from distutils.core import Distribution, Extension
+from distutils.command.build_ext import build_ext
+
+import Cython
+from ..Compiler.Main import Context
+from ..Compiler.Options import (default_options, CompilationOptions,
+    get_directive_defaults)
+
+from ..Compiler.Visitor import CythonTransform, EnvTransform
+from ..Compiler.ParseTreeTransforms import SkipDeclarations
+from ..Compiler.TreeFragment import parse_from_strings
+from ..Compiler.StringEncoding import _unicode
+from .Dependencies import strip_string_literals, cythonize, cached_function
+from ..Compiler import Pipeline
+from ..Utils import get_cython_cache_dir
+import cython as cython_module
+
+
+IS_PY3 = sys.version_info >= (3,)
+
+# A utility function to convert user-supplied ASCII strings to unicode.
+if not IS_PY3:
+    def to_unicode(s):
+        if isinstance(s, bytes):
+            return s.decode('ascii')
+        else:
+            return s
+else:
+    to_unicode = lambda x: x
+
+
+if sys.version_info < (3, 5):
+    import imp
+    def load_dynamic(name, module_path):
+        return imp.load_dynamic(name, module_path)
+else:
+    import importlib.util
+    from importlib.machinery import ExtensionFileLoader
+
+    def load_dynamic(name, path):
+        spec = importlib.util.spec_from_file_location(name, loader=ExtensionFileLoader(name, path))
+        module = importlib.util.module_from_spec(spec)
+        spec.loader.exec_module(module)
+        return module
+
+
+class UnboundSymbols(EnvTransform, SkipDeclarations):
+    def __init__(self):
+        super(EnvTransform, self).__init__(context=None)
+        self.unbound = set()
+    def visit_NameNode(self, node):
+        if not self.current_env().lookup(node.name):
+            self.unbound.add(node.name)
+        return node
+    def __call__(self, node):
+        super(UnboundSymbols, self).__call__(node)
+        return self.unbound
+
+
+@cached_function
+def unbound_symbols(code, context=None):
+    code = to_unicode(code)
+    if context is None:
+        context = Context([], get_directive_defaults(),
+                          options=CompilationOptions(default_options))
+    from ..Compiler.ParseTreeTransforms import AnalyseDeclarationsTransform
+    tree = parse_from_strings('(tree fragment)', code)
+    for phase in Pipeline.create_pipeline(context, 'pyx'):
+        if phase is None:
+            continue
+        tree = phase(tree)
+        if isinstance(phase, AnalyseDeclarationsTransform):
+            break
+    try:
+        import builtins
+    except ImportError:
+        import __builtin__ as builtins
+    return tuple(UnboundSymbols()(tree) - set(dir(builtins)))
+
+
+def unsafe_type(arg, context=None):
+    py_type = type(arg)
+    if py_type is int:
+        return 'long'
+    else:
+        return safe_type(arg, context)
+
+
+def safe_type(arg, context=None):
+    py_type = type(arg)
+    if py_type in (list, tuple, dict, str):
+        return py_type.__name__
+    elif py_type is complex:
+        return 'double complex'
+    elif py_type is float:
+        return 'double'
+    elif py_type is bool:
+        return 'bint'
+    elif 'numpy' in sys.modules and isinstance(arg, sys.modules['numpy'].ndarray):
+        return 'numpy.ndarray[numpy.%s_t, ndim=%s]' % (arg.dtype.name, arg.ndim)
+    else:
+        for base_type in py_type.__mro__:
+            if base_type.__module__ in ('__builtin__', 'builtins'):
+                return 'object'
+            module = context.find_module(base_type.__module__, need_pxd=False)
+            if module:
+                entry = module.lookup(base_type.__name__)
+                if entry.is_type:
+                    return '%s.%s' % (base_type.__module__, base_type.__name__)
+        return 'object'
+
+
+def _get_build_extension():
+    dist = Distribution()
+    # Ensure the build respects distutils configuration by parsing
+    # the configuration files
+    config_files = dist.find_config_files()
+    dist.parse_config_files(config_files)
+    build_extension = build_ext(dist)
+    build_extension.finalize_options()
+    return build_extension
+
+
+@cached_function
+def _create_context(cython_include_dirs):
+    return Context(
+        list(cython_include_dirs),
+        get_directive_defaults(),
+        options=CompilationOptions(default_options)
+    )
+
+
+_cython_inline_cache = {}
+_cython_inline_default_context = _create_context(('.',))
+
+
+def _populate_unbound(kwds, unbound_symbols, locals=None, globals=None):
+    for symbol in unbound_symbols:
+        if symbol not in kwds:
+            if locals is None or globals is None:
+                calling_frame = inspect.currentframe().f_back.f_back.f_back
+                if locals is None:
+                    locals = calling_frame.f_locals
+                if globals is None:
+                    globals = calling_frame.f_globals
+            if symbol in locals:
+                kwds[symbol] = locals[symbol]
+            elif symbol in globals:
+                kwds[symbol] = globals[symbol]
+            else:
+                print("Couldn't find %r" % symbol)
+
+
+def _inline_key(orig_code, arg_sigs, language_level):
+    key = orig_code, arg_sigs, sys.version_info, sys.executable, language_level, Cython.__version__
+    return hashlib.sha1(_unicode(key).encode('utf-8')).hexdigest()
+
+
+def cython_inline(code, get_type=unsafe_type,
+                  lib_dir=os.path.join(get_cython_cache_dir(), 'inline'),
+                  cython_include_dirs=None, cython_compiler_directives=None,
+                  force=False, quiet=False, locals=None, globals=None, language_level=None, **kwds):
+
+    if get_type is None:
+        get_type = lambda x: 'object'
+    ctx = _create_context(tuple(cython_include_dirs)) if cython_include_dirs else _cython_inline_default_context
+
+    cython_compiler_directives = dict(cython_compiler_directives) if cython_compiler_directives else {}
+    if language_level is None and 'language_level' not in cython_compiler_directives:
+        language_level = '3str'
+    if language_level is not None:
+        cython_compiler_directives['language_level'] = language_level
+
+    key_hash = None
+
+    # Fast path if this has been called in this session.
+    _unbound_symbols = _cython_inline_cache.get(code)
+    if _unbound_symbols is not None:
+        _populate_unbound(kwds, _unbound_symbols, locals, globals)
+        args = sorted(kwds.items())
+        arg_sigs = tuple([(get_type(value, ctx), arg) for arg, value in args])
+        key_hash = _inline_key(code, arg_sigs, language_level)
+        invoke = _cython_inline_cache.get((code, arg_sigs, key_hash))
+        if invoke is not None:
+            arg_list = [arg[1] for arg in args]
+            return invoke(*arg_list)
+
+    orig_code = code
+    code = to_unicode(code)
+    code, literals = strip_string_literals(code)
+    code = strip_common_indent(code)
+    if locals is None:
+        locals = inspect.currentframe().f_back.f_back.f_locals
+    if globals is None:
+        globals = inspect.currentframe().f_back.f_back.f_globals
+    try:
+        _cython_inline_cache[orig_code] = _unbound_symbols = unbound_symbols(code)
+        _populate_unbound(kwds, _unbound_symbols, locals, globals)
+    except AssertionError:
+        if not quiet:
+            # Parsing from strings not fully supported (e.g. cimports).
+            print("Could not parse code as a string (to extract unbound symbols).")
+
+    cimports = []
+    for name, arg in list(kwds.items()):
+        if arg is cython_module:
+            cimports.append('\ncimport cython as %s' % name)
+            del kwds[name]
+    arg_names = sorted(kwds)
+    arg_sigs = tuple([(get_type(kwds[arg], ctx), arg) for arg in arg_names])
+    if key_hash is None:
+        key_hash = _inline_key(orig_code, arg_sigs, language_level)
+    module_name = "_cython_inline_" + key_hash
+
+    if module_name in sys.modules:
+        module = sys.modules[module_name]
+
+    else:
+        build_extension = None
+        if cython_inline.so_ext is None:
+            # Figure out and cache current extension suffix
+            build_extension = _get_build_extension()
+            cython_inline.so_ext = build_extension.get_ext_filename('')
+
+        lib_dir = os.path.abspath(lib_dir)
+        module_path = os.path.join(lib_dir, module_name + cython_inline.so_ext)
+
+        if not os.path.exists(lib_dir):
+            os.makedirs(lib_dir)
+        if force or not os.path.isfile(module_path):
+            cflags = []
+            define_macros = []
+            c_include_dirs = []
+            qualified = re.compile(r'([.\w]+)[.]')
+            for type, _ in arg_sigs:
+                m = qualified.match(type)
+                if m:
+                    cimports.append('\ncimport %s' % m.groups()[0])
+                    # one special case
+                    if m.groups()[0] == 'numpy':
+                        import numpy
+                        c_include_dirs.append(numpy.get_include())
+                        define_macros.append(("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION"))
+                        # cflags.append('-Wno-unused')
+            module_body, func_body = extract_func_code(code)
+            params = ', '.join(['%s %s' % a for a in arg_sigs])
+            module_code = """
+%(module_body)s
+%(cimports)s
+def __invoke(%(params)s):
+%(func_body)s
+    return locals()
+            """ % {'cimports': '\n'.join(cimports),
+                   'module_body': module_body,
+                   'params': params,
+                   'func_body': func_body }
+            for key, value in literals.items():
+                module_code = module_code.replace(key, value)
+            pyx_file = os.path.join(lib_dir, module_name + '.pyx')
+            fh = open(pyx_file, 'w')
+            try:
+                fh.write(module_code)
+            finally:
+                fh.close()
+            extension = Extension(
+                name=module_name,
+                sources=[pyx_file],
+                include_dirs=c_include_dirs or None,
+                extra_compile_args=cflags or None,
+                define_macros=define_macros or None,
+            )
+            if build_extension is None:
+                build_extension = _get_build_extension()
+            build_extension.extensions = cythonize(
+                [extension],
+                include_path=cython_include_dirs or ['.'],
+                compiler_directives=cython_compiler_directives,
+                quiet=quiet)
+            build_extension.build_temp = os.path.dirname(pyx_file)
+            build_extension.build_lib  = lib_dir
+            build_extension.run()
+
+        if sys.platform == 'win32' and sys.version_info >= (3, 8):
+            with os.add_dll_directory(os.path.abspath(lib_dir)):
+                module = load_dynamic(module_name, module_path)
+        else:
+            module = load_dynamic(module_name, module_path)
+
+    _cython_inline_cache[orig_code, arg_sigs, key_hash] = module.__invoke
+    arg_list = [kwds[arg] for arg in arg_names]
+    return module.__invoke(*arg_list)
+
+
+# Cached suffix used by cython_inline above.  None should get
+# overridden with actual value upon the first cython_inline invocation
+cython_inline.so_ext = None
+
+_find_non_space = re.compile('[^ ]').search
+
+
+def strip_common_indent(code):
+    min_indent = None
+    lines = code.splitlines()
+    for line in lines:
+        match = _find_non_space(line)
+        if not match:
+            continue  # blank
+        indent = match.start()
+        if line[indent] == '#':
+            continue  # comment
+        if min_indent is None or min_indent > indent:
+            min_indent = indent
+    for ix, line in enumerate(lines):
+        match = _find_non_space(line)
+        if not match or not line or line[indent:indent+1] == '#':
+            continue
+        lines[ix] = line[min_indent:]
+    return '\n'.join(lines)
+
+
+module_statement = re.compile(r'^((cdef +(extern|class))|cimport|(from .+ cimport)|(from .+ import +[*]))')
+def extract_func_code(code):
+    module = []
+    function = []
+    current = function
+    code = code.replace('\t', ' ')
+    lines = code.split('\n')
+    for line in lines:
+        if not line.startswith(' '):
+            if module_statement.match(line):
+                current = module
+            else:
+                current = function
+        current.append(line)
+    return '\n'.join(module), '    ' + '\n    '.join(function)
+
+
+def get_body(source):
+    ix = source.index(':')
+    if source[:5] == 'lambda':
+        return "return %s" % source[ix+1:]
+    else:
+        return source[ix+1:]
+
+
+# Lots to be done here... It would be especially cool if compiled functions
+# could invoke each other quickly.
+class RuntimeCompiledFunction(object):
+
+    def __init__(self, f):
+        self._f = f
+        self._body = get_body(inspect.getsource(f))
+
+    def __call__(self, *args, **kwds):
+        all = inspect.getcallargs(self._f, *args, **kwds)
+        if IS_PY3:
+            return cython_inline(self._body, locals=self._f.__globals__, globals=self._f.__globals__, **all)
+        else:
+            return cython_inline(self._body, locals=self._f.func_globals, globals=self._f.func_globals, **all)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/IpythonMagic.py

@@ -0,0 +1,572 @@
+# -*- coding: utf-8 -*-
+"""
+=====================
+Cython related magics
+=====================
+
+Magic command interface for interactive work with Cython
+
+.. note::
+
+  The ``Cython`` package needs to be installed separately. It
+  can be obtained using ``easy_install`` or ``pip``.
+
+Usage
+=====
+
+To enable the magics below, execute ``%load_ext cython``.
+
+``%%cython``
+
+{CYTHON_DOC}
+
+``%%cython_inline``
+
+{CYTHON_INLINE_DOC}
+
+``%%cython_pyximport``
+
+{CYTHON_PYXIMPORT_DOC}
+
+Author:
+* Brian Granger
+
+Code moved from IPython and adapted by:
+* Martín Gaitán
+
+Parts of this code were taken from Cython.inline.
+"""
+#-----------------------------------------------------------------------------
+# Copyright (C) 2010-2011, IPython Development Team.
+#
+# Distributed under the terms of the Modified BSD License.
+#
+# The full license is in the file ipython-COPYING.rst, distributed with this software.
+#-----------------------------------------------------------------------------
+
+from __future__ import absolute_import, print_function
+
+import io
+import os
+import re
+import sys
+import time
+import copy
+import distutils.log
+import textwrap
+
+IO_ENCODING = sys.getfilesystemencoding()
+IS_PY2 = sys.version_info[0] < 3
+
+import hashlib
+from distutils.core import Distribution, Extension
+from distutils.command.build_ext import build_ext
+
+from IPython.core import display
+from IPython.core import magic_arguments
+from IPython.core.magic import Magics, magics_class, cell_magic
+try:
+    from IPython.paths import get_ipython_cache_dir
+except ImportError:
+    # older IPython version
+    from IPython.utils.path import get_ipython_cache_dir
+from IPython.utils.text import dedent
+
+from ..Shadow import __version__ as cython_version
+from ..Compiler.Errors import CompileError
+from .Inline import cython_inline, load_dynamic
+from .Dependencies import cythonize
+from ..Utils import captured_fd, print_captured
+
+
+PGO_CONFIG = {
+    'gcc': {
+        'gen': ['-fprofile-generate', '-fprofile-dir={TEMPDIR}'],
+        'use': ['-fprofile-use', '-fprofile-correction', '-fprofile-dir={TEMPDIR}'],
+    },
+    # blind copy from 'configure' script in CPython 3.7
+    'icc': {
+        'gen': ['-prof-gen'],
+        'use': ['-prof-use'],
+    }
+}
+PGO_CONFIG['mingw32'] = PGO_CONFIG['gcc']
+
+
+if IS_PY2:
+    def encode_fs(name):
+        return name if isinstance(name, bytes) else name.encode(IO_ENCODING)
+else:
+    def encode_fs(name):
+        return name
+
+
+@magics_class
+class CythonMagics(Magics):
+
+    def __init__(self, shell):
+        super(CythonMagics, self).__init__(shell)
+        self._reloads = {}
+        self._code_cache = {}
+        self._pyximport_installed = False
+
+    def _import_all(self, module):
+        mdict = module.__dict__
+        if '__all__' in mdict:
+            keys = mdict['__all__']
+        else:
+            keys = [k for k in mdict if not k.startswith('_')]
+
+        for k in keys:
+            try:
+                self.shell.push({k: mdict[k]})
+            except KeyError:
+                msg = "'module' object has no attribute '%s'" % k
+                raise AttributeError(msg)
+
+    @cell_magic
+    def cython_inline(self, line, cell):
+        """Compile and run a Cython code cell using Cython.inline.
+
+        This magic simply passes the body of the cell to Cython.inline
+        and returns the result. If the variables `a` and `b` are defined
+        in the user's namespace, here is a simple example that returns
+        their sum::
+
+            %%cython_inline
+            return a+b
+
+        For most purposes, we recommend the usage of the `%%cython` magic.
+        """
+        locs = self.shell.user_global_ns
+        globs = self.shell.user_ns
+        return cython_inline(cell, locals=locs, globals=globs)
+
+    @cell_magic
+    def cython_pyximport(self, line, cell):
+        """Compile and import a Cython code cell using pyximport.
+
+        The contents of the cell are written to a `.pyx` file in the current
+        working directory, which is then imported using `pyximport`. This
+        magic requires a module name to be passed::
+
+            %%cython_pyximport modulename
+            def f(x):
+                return 2.0*x
+
+        The compiled module is then imported and all of its symbols are
+        injected into the user's namespace. For most purposes, we recommend
+        the usage of the `%%cython` magic.
+        """
+        module_name = line.strip()
+        if not module_name:
+            raise ValueError('module name must be given')
+        fname = module_name + '.pyx'
+        with io.open(fname, 'w', encoding='utf-8') as f:
+            f.write(cell)
+        if 'pyximport' not in sys.modules or not self._pyximport_installed:
+            import pyximport
+            pyximport.install()
+            self._pyximport_installed = True
+        if module_name in self._reloads:
+            module = self._reloads[module_name]
+            # Note: reloading extension modules is not actually supported
+            # (requires PEP-489 reinitialisation support).
+            # Don't know why this should ever have worked as it reads here.
+            # All we really need to do is to update the globals below.
+            #reload(module)
+        else:
+            __import__(module_name)
+            module = sys.modules[module_name]
+            self._reloads[module_name] = module
+        self._import_all(module)
+
+    @magic_arguments.magic_arguments()
+    @magic_arguments.argument(
+        '-a', '--annotate', action='store_const', const='default', dest='annotate',
+        help="Produce a colorized HTML version of the source."
+    )
+    @magic_arguments.argument(
+        '--annotate-fullc', action='store_const', const='fullc', dest='annotate',
+        help="Produce a colorized HTML version of the source "
+             "which includes entire generated C/C++-code."
+    )
+    @magic_arguments.argument(
+        '-+', '--cplus', action='store_true', default=False,
+        help="Output a C++ rather than C file."
+    )
+    @magic_arguments.argument(
+        '-3', dest='language_level', action='store_const', const=3, default=None,
+        help="Select Python 3 syntax."
+    )
+    @magic_arguments.argument(
+        '-2', dest='language_level', action='store_const', const=2, default=None,
+        help="Select Python 2 syntax."
+    )
+    @magic_arguments.argument(
+        '-f', '--force', action='store_true', default=False,
+        help="Force the compilation of a new module, even if the source has been "
+             "previously compiled."
+    )
+    @magic_arguments.argument(
+        '-c', '--compile-args', action='append', default=[],
+        help="Extra flags to pass to compiler via the `extra_compile_args` "
+             "Extension flag (can be specified  multiple times)."
+    )
+    @magic_arguments.argument(
+        '--link-args', action='append', default=[],
+        help="Extra flags to pass to linker via the `extra_link_args` "
+             "Extension flag (can be specified  multiple times)."
+    )
+    @magic_arguments.argument(
+        '-l', '--lib', action='append', default=[],
+        help="Add a library to link the extension against (can be specified "
+             "multiple times)."
+    )
+    @magic_arguments.argument(
+        '-n', '--name',
+        help="Specify a name for the Cython module."
+    )
+    @magic_arguments.argument(
+        '-L', dest='library_dirs', metavar='dir', action='append', default=[],
+        help="Add a path to the list of library directories (can be specified "
+             "multiple times)."
+    )
+    @magic_arguments.argument(
+        '-I', '--include', action='append', default=[],
+        help="Add a path to the list of include directories (can be specified "
+             "multiple times)."
+    )
+    @magic_arguments.argument(
+        '-S', '--src', action='append', default=[],
+        help="Add a path to the list of src files (can be specified "
+             "multiple times)."
+    )
+    @magic_arguments.argument(
+        '--pgo', dest='pgo', action='store_true', default=False,
+        help=("Enable profile guided optimisation in the C compiler. "
+              "Compiles the cell twice and executes it in between to generate a runtime profile.")
+    )
+    @magic_arguments.argument(
+        '--verbose', dest='quiet', action='store_false', default=True,
+        help=("Print debug information like generated .c/.cpp file location "
+              "and exact gcc/g++ command invoked.")
+    )
+    @cell_magic
+    def cython(self, line, cell):
+        """Compile and import everything from a Cython code cell.
+
+        The contents of the cell are written to a `.pyx` file in the
+        directory `IPYTHONDIR/cython` using a filename with the hash of the
+        code. This file is then cythonized and compiled. The resulting module
+        is imported and all of its symbols are injected into the user's
+        namespace. The usage is similar to that of `%%cython_pyximport` but
+        you don't have to pass a module name::
+
+            %%cython
+            def f(x):
+                return 2.0*x
+
+        To compile OpenMP codes, pass the required  `--compile-args`
+        and `--link-args`.  For example with gcc::
+
+            %%cython --compile-args=-fopenmp --link-args=-fopenmp
+            ...
+
+        To enable profile guided optimisation, pass the ``--pgo`` option.
+        Note that the cell itself needs to take care of establishing a suitable
+        profile when executed. This can be done by implementing the functions to
+        optimise, and then calling them directly in the same cell on some realistic
+        training data like this::
+
+            %%cython --pgo
+            def critical_function(data):
+                for item in data:
+                    ...
+
+            # execute function several times to build profile
+            from somewhere import some_typical_data
+            for _ in range(100):
+                critical_function(some_typical_data)
+
+        In Python 3.5 and later, you can distinguish between the profile and
+        non-profile runs as follows::
+
+            if "_pgo_" in __name__:
+                ...  # execute critical code here
+        """
+        args = magic_arguments.parse_argstring(self.cython, line)
+        code = cell if cell.endswith('\n') else cell + '\n'
+        lib_dir = os.path.join(get_ipython_cache_dir(), 'cython')
+        key = (code, line, sys.version_info, sys.executable, cython_version)
+
+        if not os.path.exists(lib_dir):
+            os.makedirs(lib_dir)
+
+        if args.pgo:
+            key += ('pgo',)
+        if args.force:
+            # Force a new module name by adding the current time to the
+            # key which is hashed to determine the module name.
+            key += (time.time(),)
+
+        if args.name:
+            module_name = str(args.name)  # no-op in Py3
+        else:
+            module_name = "_cython_magic_" + hashlib.sha1(str(key).encode('utf-8')).hexdigest()
+        html_file = os.path.join(lib_dir, module_name + '.html')
+        module_path = os.path.join(lib_dir, module_name + self.so_ext)
+
+        have_module = os.path.isfile(module_path)
+        need_cythonize = args.pgo or not have_module
+
+        if args.annotate:
+            if not os.path.isfile(html_file):
+                need_cythonize = True
+
+        extension = None
+        if need_cythonize:
+            extensions = self._cythonize(module_name, code, lib_dir, args, quiet=args.quiet)
+            if extensions is None:
+                # Compilation failed and printed error message
+                return None
+            assert len(extensions) == 1
+            extension = extensions[0]
+            self._code_cache[key] = module_name
+
+            if args.pgo:
+                self._profile_pgo_wrapper(extension, lib_dir)
+
+        def print_compiler_output(stdout, stderr, where):
+            # On windows, errors are printed to stdout, we redirect both to sys.stderr.
+            print_captured(stdout, where, u"Content of stdout:\n")
+            print_captured(stderr, where, u"Content of stderr:\n")
+
+        get_stderr = get_stdout = None
+        try:
+            with captured_fd(1) as get_stdout:
+                with captured_fd(2) as get_stderr:
+                    self._build_extension(
+                        extension, lib_dir, pgo_step_name='use' if args.pgo else None, quiet=args.quiet)
+        except (distutils.errors.CompileError, distutils.errors.LinkError):
+            # Build failed, print error message from compiler/linker
+            print_compiler_output(get_stdout(), get_stderr(), sys.stderr)
+            return None
+
+        # Build seems ok, but we might still want to show any warnings that occurred
+        print_compiler_output(get_stdout(), get_stderr(), sys.stdout)
+
+        module = load_dynamic(module_name, module_path)
+        self._import_all(module)
+
+        if args.annotate:
+            try:
+                with io.open(html_file, encoding='utf-8') as f:
+                    annotated_html = f.read()
+            except IOError as e:
+                # File could not be opened. Most likely the user has a version
+                # of Cython before 0.15.1 (when `cythonize` learned the
+                # `force` keyword argument) and has already compiled this
+                # exact source without annotation.
+                print('Cython completed successfully but the annotated '
+                      'source could not be read.', file=sys.stderr)
+                print(e, file=sys.stderr)
+            else:
+                return display.HTML(self.clean_annotated_html(annotated_html))
+
+    def _profile_pgo_wrapper(self, extension, lib_dir):
+        """
+        Generate a .c file for a separate extension module that calls the
+        module init function of the original module.  This makes sure that the
+        PGO profiler sees the correct .o file of the final module, but it still
+        allows us to import the module under a different name for profiling,
+        before recompiling it into the PGO optimised module.  Overwriting and
+        reimporting the same shared library is not portable.
+        """
+        extension = copy.copy(extension)  # shallow copy, do not modify sources in place!
+        module_name = extension.name
+        pgo_module_name = '_pgo_' + module_name
+        pgo_wrapper_c_file = os.path.join(lib_dir, pgo_module_name + '.c')
+        with io.open(pgo_wrapper_c_file, 'w', encoding='utf-8') as f:
+            f.write(textwrap.dedent(u"""
+            #include "Python.h"
+            #if PY_MAJOR_VERSION < 3
+            extern PyMODINIT_FUNC init%(module_name)s(void);
+            PyMODINIT_FUNC init%(pgo_module_name)s(void); /*proto*/
+            PyMODINIT_FUNC init%(pgo_module_name)s(void) {
+                PyObject *sys_modules;
+                init%(module_name)s();  if (PyErr_Occurred()) return;
+                sys_modules = PyImport_GetModuleDict();  /* borrowed, no exception, "never" fails */
+                if (sys_modules) {
+                    PyObject *module = PyDict_GetItemString(sys_modules, "%(module_name)s");  if (!module) return;
+                    PyDict_SetItemString(sys_modules, "%(pgo_module_name)s", module);
+                    Py_DECREF(module);
+                }
+            }
+            #else
+            extern PyMODINIT_FUNC PyInit_%(module_name)s(void);
+            PyMODINIT_FUNC PyInit_%(pgo_module_name)s(void); /*proto*/
+            PyMODINIT_FUNC PyInit_%(pgo_module_name)s(void) {
+                return PyInit_%(module_name)s();
+            }
+            #endif
+            """ % {'module_name': module_name, 'pgo_module_name': pgo_module_name}))
+
+        extension.sources = extension.sources + [pgo_wrapper_c_file]  # do not modify in place!
+        extension.name = pgo_module_name
+
+        self._build_extension(extension, lib_dir, pgo_step_name='gen')
+
+        # import and execute module code to generate profile
+        so_module_path = os.path.join(lib_dir, pgo_module_name + self.so_ext)
+        load_dynamic(pgo_module_name, so_module_path)
+
+    def _cythonize(self, module_name, code, lib_dir, args, quiet=True):
+        pyx_file = os.path.join(lib_dir, module_name + '.pyx')
+        pyx_file = encode_fs(pyx_file)
+
+        c_include_dirs = args.include
+        c_src_files = list(map(str, args.src))
+        if 'numpy' in code:
+            import numpy
+            c_include_dirs.append(numpy.get_include())
+        with io.open(pyx_file, 'w', encoding='utf-8') as f:
+            f.write(code)
+        extension = Extension(
+            name=module_name,
+            sources=[pyx_file] + c_src_files,
+            include_dirs=c_include_dirs,
+            library_dirs=args.library_dirs,
+            extra_compile_args=args.compile_args,
+            extra_link_args=args.link_args,
+            libraries=args.lib,
+            language='c++' if args.cplus else 'c',
+        )
+        try:
+            opts = dict(
+                quiet=quiet,
+                annotate=args.annotate,
+                force=True,
+                language_level=min(3, sys.version_info[0]),
+            )
+            if args.language_level is not None:
+                assert args.language_level in (2, 3)
+                opts['language_level'] = args.language_level
+            return cythonize([extension], **opts)
+        except CompileError:
+            return None
+
+    def _build_extension(self, extension, lib_dir, temp_dir=None, pgo_step_name=None, quiet=True):
+        build_extension = self._get_build_extension(
+            extension, lib_dir=lib_dir, temp_dir=temp_dir, pgo_step_name=pgo_step_name)
+        old_threshold = None
+        try:
+            if not quiet:
+                old_threshold = distutils.log.set_threshold(distutils.log.DEBUG)
+            build_extension.run()
+        finally:
+            if not quiet and old_threshold is not None:
+                distutils.log.set_threshold(old_threshold)
+
+    def _add_pgo_flags(self, build_extension, step_name, temp_dir):
+        compiler_type = build_extension.compiler.compiler_type
+        if compiler_type == 'unix':
+            compiler_cmd = build_extension.compiler.compiler_so
+            # TODO: we could try to call "[cmd] --version" for better insights
+            if not compiler_cmd:
+                pass
+            elif 'clang' in compiler_cmd or 'clang' in compiler_cmd[0]:
+                compiler_type = 'clang'
+            elif 'icc' in compiler_cmd or 'icc' in compiler_cmd[0]:
+                compiler_type = 'icc'
+            elif 'gcc' in compiler_cmd or 'gcc' in compiler_cmd[0]:
+                compiler_type = 'gcc'
+            elif 'g++' in compiler_cmd or 'g++' in compiler_cmd[0]:
+                compiler_type = 'gcc'
+        config = PGO_CONFIG.get(compiler_type)
+        orig_flags = []
+        if config and step_name in config:
+            flags = [f.format(TEMPDIR=temp_dir) for f in config[step_name]]
+            for extension in build_extension.extensions:
+                orig_flags.append((extension.extra_compile_args, extension.extra_link_args))
+                extension.extra_compile_args = extension.extra_compile_args + flags
+                extension.extra_link_args = extension.extra_link_args + flags
+        else:
+            print("No PGO %s configuration known for C compiler type '%s'" % (step_name, compiler_type),
+                  file=sys.stderr)
+        return orig_flags
+
+    @property
+    def so_ext(self):
+        """The extension suffix for compiled modules."""
+        try:
+            return self._so_ext
+        except AttributeError:
+            self._so_ext = self._get_build_extension().get_ext_filename('')
+            return self._so_ext
+
+    def _clear_distutils_mkpath_cache(self):
+        """clear distutils mkpath cache
+
+        prevents distutils from skipping re-creation of dirs that have been removed
+        """
+        try:
+            from distutils.dir_util import _path_created
+        except ImportError:
+            pass
+        else:
+            _path_created.clear()
+
+    def _get_build_extension(self, extension=None, lib_dir=None, temp_dir=None,
+                             pgo_step_name=None, _build_ext=build_ext):
+        self._clear_distutils_mkpath_cache()
+        dist = Distribution()
+        config_files = dist.find_config_files()
+        try:
+            config_files.remove('setup.cfg')
+        except ValueError:
+            pass
+        dist.parse_config_files(config_files)
+
+        if not temp_dir:
+            temp_dir = lib_dir
+        add_pgo_flags = self._add_pgo_flags
+
+        if pgo_step_name:
+            base_build_ext = _build_ext
+            class _build_ext(_build_ext):
+                def build_extensions(self):
+                    add_pgo_flags(self, pgo_step_name, temp_dir)
+                    base_build_ext.build_extensions(self)
+
+        build_extension = _build_ext(dist)
+        build_extension.finalize_options()
+        if temp_dir:
+            temp_dir = encode_fs(temp_dir)
+            build_extension.build_temp = temp_dir
+        if lib_dir:
+            lib_dir = encode_fs(lib_dir)
+            build_extension.build_lib = lib_dir
+        if extension is not None:
+            build_extension.extensions = [extension]
+        return build_extension
+
+    @staticmethod
+    def clean_annotated_html(html):
+        """Clean up the annotated HTML source.
+
+        Strips the link to the generated C or C++ file, which we do not
+        present to the user.
+        """
+        r = re.compile('<p>Raw output: <a href="(.*)">(.*)</a>')
+        html = '\n'.join(l for l in html.splitlines() if not r.match(l))
+        return html
+
+__doc__ = __doc__.format(
+    # rST doesn't see the -+ flag as part of an option list, so we
+    # hide it from the module-level docstring.
+    CYTHON_DOC=dedent(CythonMagics.cython.__doc__\
+                                  .replace('-+, --cplus', '--cplus    ')),
+    CYTHON_INLINE_DOC=dedent(CythonMagics.cython_inline.__doc__),
+    CYTHON_PYXIMPORT_DOC=dedent(CythonMagics.cython_pyximport.__doc__),
+)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestCyCache.py

@@ -0,0 +1,121 @@
+import difflib
+import glob
+import gzip
+import os
+import sys
+import tempfile
+import unittest
+
+import Cython.Build.Dependencies
+import Cython.Utils
+from Cython.TestUtils import CythonTest
+
+
+class TestCyCache(CythonTest):
+
+    def setUp(self):
+        CythonTest.setUp(self)
+        self.temp_dir = tempfile.mkdtemp(
+            prefix='cycache-test',
+            dir='TEST_TMP' if os.path.isdir('TEST_TMP') else None)
+        self.src_dir = tempfile.mkdtemp(prefix='src', dir=self.temp_dir)
+        self.cache_dir = tempfile.mkdtemp(prefix='cache', dir=self.temp_dir)
+
+    def cache_files(self, file_glob):
+        return glob.glob(os.path.join(self.cache_dir, file_glob))
+
+    def fresh_cythonize(self, *args, **kwargs):
+        Cython.Utils.clear_function_caches()
+        Cython.Build.Dependencies._dep_tree = None  # discard method caches
+        Cython.Build.Dependencies.cythonize(*args, **kwargs)
+
+    def test_cycache_switch(self):
+        content1 = 'value = 1\n'
+        content2 = 'value = 2\n'
+        a_pyx = os.path.join(self.src_dir, 'a.pyx')
+        a_c = a_pyx[:-4] + '.c'
+
+        with open(a_pyx, 'w') as f:
+            f.write(content1)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        self.assertEqual(1, len(self.cache_files('a.c*')))
+        with open(a_c) as f:
+            a_contents1 = f.read()
+        os.unlink(a_c)
+
+        with open(a_pyx, 'w') as f:
+            f.write(content2)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        with open(a_c) as f:
+            a_contents2 = f.read()
+        os.unlink(a_c)
+
+        self.assertNotEqual(a_contents1, a_contents2, 'C file not changed!')
+        self.assertEqual(2, len(self.cache_files('a.c*')))
+
+        with open(a_pyx, 'w') as f:
+            f.write(content1)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        self.assertEqual(2, len(self.cache_files('a.c*')))
+        with open(a_c) as f:
+            a_contents = f.read()
+        self.assertEqual(
+            a_contents, a_contents1,
+            msg='\n'.join(list(difflib.unified_diff(
+                a_contents.split('\n'), a_contents1.split('\n')))[:10]))
+
+    @unittest.skipIf(sys.version_info[:2] == (3, 12) and sys.platform == "win32",
+                     "This test is mysteriously broken on Windows on the CI only "
+                     "(https://github.com/cython/cython/issues/5825)")
+    def test_cycache_uses_cache(self):
+        a_pyx = os.path.join(self.src_dir, 'a.pyx')
+        a_c = a_pyx[:-4] + '.c'
+        with open(a_pyx, 'w') as f:
+            f.write('pass')
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        a_cache = os.path.join(self.cache_dir, os.listdir(self.cache_dir)[0])
+        gzip.GzipFile(a_cache, 'wb').write('fake stuff'.encode('ascii'))
+        os.unlink(a_c)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        with open(a_c) as f:
+            a_contents = f.read()
+        self.assertEqual(a_contents, 'fake stuff',
+                         'Unexpected contents: %s...' % a_contents[:100])
+
+    def test_multi_file_output(self):
+        a_pyx = os.path.join(self.src_dir, 'a.pyx')
+        a_c = a_pyx[:-4] + '.c'
+        a_h = a_pyx[:-4] + '.h'
+        a_api_h = a_pyx[:-4] + '_api.h'
+        with open(a_pyx, 'w') as f:
+            f.write('cdef public api int foo(int x): return x\n')
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        expected = [a_c, a_h, a_api_h]
+        for output in expected:
+            self.assertTrue(os.path.exists(output), output)
+            os.unlink(output)
+        self.fresh_cythonize(a_pyx, cache=self.cache_dir)
+        for output in expected:
+            self.assertTrue(os.path.exists(output), output)
+
+    def test_options_invalidation(self):
+        hash_pyx = os.path.join(self.src_dir, 'options.pyx')
+        hash_c = hash_pyx[:-len('.pyx')] + '.c'
+
+        with open(hash_pyx, 'w') as f:
+            f.write('pass')
+        self.fresh_cythonize(hash_pyx, cache=self.cache_dir, cplus=False)
+        self.assertEqual(1, len(self.cache_files('options.c*')))
+
+        os.unlink(hash_c)
+        self.fresh_cythonize(hash_pyx, cache=self.cache_dir, cplus=True)
+        self.assertEqual(2, len(self.cache_files('options.c*')))
+
+        os.unlink(hash_c)
+        self.fresh_cythonize(hash_pyx, cache=self.cache_dir, cplus=False, show_version=False)
+        self.assertEqual(2, len(self.cache_files('options.c*')))
+
+        os.unlink(hash_c)
+        self.fresh_cythonize(hash_pyx, cache=self.cache_dir, cplus=False, show_version=True)
+        self.assertEqual(2, len(self.cache_files('options.c*')))

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestCythonizeArgsParser.py

@@ -0,0 +1,482 @@
+from Cython.Build.Cythonize import (
+    create_args_parser, parse_args_raw, parse_args,
+    parallel_compiles
+)
+
+from Cython.Compiler import Options
+from Cython.Compiler.Tests.Utils import backup_Options, restore_Options, check_global_options
+
+from unittest import TestCase
+
+import sys
+try:
+    from StringIO import StringIO
+except ImportError:
+    from io import StringIO  # doesn't accept 'str' in Py2
+
+
+class TestCythonizeArgsParser(TestCase):
+
+    def setUp(self):
+        TestCase.setUp(self)
+        self.parse_args = lambda x, parser=create_args_parser() : parse_args_raw(parser, x)
+
+
+    def are_default(self, options, skip):
+        # empty containers
+        empty_containers = ['directives', 'compile_time_env', 'options', 'excludes']
+        are_none = ['language_level', 'annotate', 'build', 'build_inplace', 'force', 'quiet', 'lenient', 'keep_going', 'no_docstrings']
+        for opt_name in empty_containers:
+            if len(getattr(options, opt_name))!=0 and (opt_name not in skip):
+                self.assertEqual(opt_name,"", msg="For option "+opt_name)
+                return False
+        for opt_name in are_none:
+            if (getattr(options, opt_name) is not None) and (opt_name not in skip):
+                self.assertEqual(opt_name,"", msg="For option "+opt_name)
+                return False
+        if options.parallel!=parallel_compiles and ('parallel' not in skip):
+            return False
+        return True
+
+    # testing directives:
+    def test_directive_short(self):
+        options, args =  self.parse_args(['-X', 'cdivision=True'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], True)
+
+    def test_directive_long(self):
+        options, args =  self.parse_args(['--directive', 'cdivision=True'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], True)
+
+    def test_directive_multiple(self):
+        options, args =  self.parse_args(['-X', 'cdivision=True', '-X', 'c_string_type=bytes'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], True)
+        self.assertEqual(options.directives['c_string_type'], 'bytes')
+
+    def test_directive_multiple_v2(self):
+        options, args =  self.parse_args(['-X', 'cdivision=True,c_string_type=bytes'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], True)
+        self.assertEqual(options.directives['c_string_type'], 'bytes')
+
+    def test_directive_value_yes(self):
+        options, args =  self.parse_args(['-X', 'cdivision=YeS'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], True)
+
+    def test_directive_value_no(self):
+        options, args =  self.parse_args(['-X', 'cdivision=no'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['directives']))
+        self.assertEqual(options.directives['cdivision'], False)
+
+    def test_directive_value_invalid(self):
+        with self.assertRaises(ValueError) as context:
+            options, args =  self.parse_args(['-X', 'cdivision=sadfasd'])
+
+    def test_directive_key_invalid(self):
+        with self.assertRaises(ValueError) as context:
+            options, args =  self.parse_args(['-X', 'abracadabra'])
+
+    def test_directive_no_value(self):
+        with self.assertRaises(ValueError) as context:
+            options, args =  self.parse_args(['-X', 'cdivision'])
+
+    def test_directives_types(self):
+        directives = {
+                'auto_pickle': True,
+                'c_string_type': 'bytearray',
+                'c_string_type': 'bytes',
+                'c_string_type': 'str',
+                'c_string_type': 'bytearray',
+                'c_string_type': 'unicode',
+                'c_string_encoding' : 'ascii',
+                'language_level' : 2,
+                'language_level' : 3,
+                'language_level' : '3str',
+                'set_initial_path' : 'my_initial_path',
+        }
+        for key, value in directives.items():
+            cmd = '{key}={value}'.format(key=key, value=str(value))
+            options, args =  self.parse_args(['-X', cmd])
+            self.assertFalse(args)
+            self.assertTrue(self.are_default(options, ['directives']), msg = "Error for option: "+cmd)
+            self.assertEqual(options.directives[key], value, msg = "Error for option: "+cmd)
+
+    def test_directives_wrong(self):
+        directives = {
+                'auto_pickle': 42,        # for bool type
+                'auto_pickle': 'NONONO',  # for bool type
+                'c_string_type': 'bites',
+                #'c_string_encoding' : 'a',
+                #'language_level' : 4,
+        }
+        for key, value in directives.items():
+            cmd = '{key}={value}'.format(key=key, value=str(value))
+            with self.assertRaises(ValueError, msg = "Error for option: "+cmd) as context:
+                options, args =  self.parse_args(['-X', cmd])
+
+    def test_compile_time_env_short(self):
+        options, args =  self.parse_args(['-E', 'MYSIZE=10'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['compile_time_env']))
+        self.assertEqual(options.compile_time_env['MYSIZE'], 10)
+
+    def test_compile_time_env_long(self):
+        options, args =  self.parse_args(['--compile-time-env', 'MYSIZE=10'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['compile_time_env']))
+        self.assertEqual(options.compile_time_env['MYSIZE'], 10)
+
+    def test_compile_time_env_multiple(self):
+        options, args =  self.parse_args(['-E', 'MYSIZE=10', '-E', 'ARRSIZE=11'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['compile_time_env']))
+        self.assertEqual(options.compile_time_env['MYSIZE'], 10)
+        self.assertEqual(options.compile_time_env['ARRSIZE'], 11)
+
+    def test_compile_time_env_multiple_v2(self):
+        options, args =  self.parse_args(['-E', 'MYSIZE=10,ARRSIZE=11'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['compile_time_env']))
+        self.assertEqual(options.compile_time_env['MYSIZE'], 10)
+        self.assertEqual(options.compile_time_env['ARRSIZE'], 11)
+
+    #testing options
+    def test_option_short(self):
+        options, args =  self.parse_args(['-s', 'docstrings=True'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_long(self):
+        options, args =  self.parse_args(['--option', 'docstrings=True'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_multiple(self):
+        options, args =  self.parse_args(['-s', 'docstrings=True', '-s', 'buffer_max_dims=8'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+        self.assertEqual(options.options['buffer_max_dims'], True)  #  really?
+
+    def test_option_multiple_v2(self):
+        options, args =  self.parse_args(['-s', 'docstrings=True,buffer_max_dims=8'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+        self.assertEqual(options.options['buffer_max_dims'], True)  #  really?
+
+    def test_option_value_yes(self):
+        options, args =  self.parse_args(['-s', 'docstrings=YeS'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_value_4242(self):
+        options, args =  self.parse_args(['-s', 'docstrings=4242'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_value_0(self):
+        options, args =  self.parse_args(['-s', 'docstrings=0'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], False)
+
+    def test_option_value_emptystr(self):
+        options, args =  self.parse_args(['-s', 'docstrings='])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_value_a_str(self):
+        options, args =  self.parse_args(['-s', 'docstrings=BB'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_value_no(self):
+        options, args =  self.parse_args(['-s', 'docstrings=nO'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], False)
+
+    def test_option_no_value(self):
+        options, args =  self.parse_args(['-s', 'docstrings'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['docstrings'], True)
+
+    def test_option_any_key(self):
+        options, args =  self.parse_args(['-s', 'abracadabra'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['options']))
+        self.assertEqual(options.options['abracadabra'], True)
+
+    def test_language_level_2(self):
+        options, args =  self.parse_args(['-2'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['language_level']))
+        self.assertEqual(options.language_level, 2)
+
+    def test_language_level_3(self):
+        options, args =  self.parse_args(['-3'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['language_level']))
+        self.assertEqual(options.language_level, 3)
+
+    def test_language_level_3str(self):
+        options, args =  self.parse_args(['--3str'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['language_level']))
+        self.assertEqual(options.language_level, '3str')
+
+    def test_annotate_short(self):
+        options, args =  self.parse_args(['-a'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['annotate']))
+        self.assertEqual(options.annotate, 'default')
+
+    def test_annotate_long(self):
+        options, args =  self.parse_args(['--annotate'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['annotate']))
+        self.assertEqual(options.annotate, 'default')
+
+    def test_annotate_fullc(self):
+        options, args =  self.parse_args(['--annotate-fullc'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['annotate']))
+        self.assertEqual(options.annotate, 'fullc')
+
+    def test_annotate_and_positional(self):
+        options, args =  self.parse_args(['-a', 'foo.pyx'])
+        self.assertEqual(args, ['foo.pyx'])
+        self.assertTrue(self.are_default(options, ['annotate']))
+        self.assertEqual(options.annotate, 'default')
+
+    def test_annotate_and_optional(self):
+        options, args =  self.parse_args(['-a', '--3str'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['annotate', 'language_level']))
+        self.assertEqual(options.annotate, 'default')
+        self.assertEqual(options.language_level, '3str')
+
+    def test_exclude_short(self):
+        options, args =  self.parse_args(['-x', '*.pyx'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['excludes']))
+        self.assertTrue('*.pyx' in options.excludes)
+
+    def test_exclude_long(self):
+        options, args =  self.parse_args(['--exclude', '*.pyx'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['excludes']))
+        self.assertTrue('*.pyx' in options.excludes)
+
+    def test_exclude_multiple(self):
+        options, args =  self.parse_args(['--exclude', '*.pyx', '--exclude', '*.py', ])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['excludes']))
+        self.assertEqual(options.excludes, ['*.pyx', '*.py'])
+
+    def test_build_short(self):
+        options, args =  self.parse_args(['-b'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['build']))
+        self.assertEqual(options.build, True)
+
+    def test_build_long(self):
+        options, args =  self.parse_args(['--build'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['build']))
+        self.assertEqual(options.build, True)
+
+    def test_inplace_short(self):
+        options, args =  self.parse_args(['-i'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['build_inplace']))
+        self.assertEqual(options.build_inplace, True)
+
+    def test_inplace_long(self):
+        options, args =  self.parse_args(['--inplace'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['build_inplace']))
+        self.assertEqual(options.build_inplace, True)
+
+    def test_parallel_short(self):
+        options, args =  self.parse_args(['-j', '42'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['parallel']))
+        self.assertEqual(options.parallel, 42)
+
+    def test_parallel_long(self):
+        options, args =  self.parse_args(['--parallel', '42'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['parallel']))
+        self.assertEqual(options.parallel, 42)
+
+    def test_force_short(self):
+        options, args =  self.parse_args(['-f'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['force']))
+        self.assertEqual(options.force, True)
+
+    def test_force_long(self):
+        options, args =  self.parse_args(['--force'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['force']))
+        self.assertEqual(options.force, True)
+
+    def test_quite_short(self):
+        options, args =  self.parse_args(['-q'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['quiet']))
+        self.assertEqual(options.quiet, True)
+
+    def test_quite_long(self):
+        options, args =  self.parse_args(['--quiet'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['quiet']))
+        self.assertEqual(options.quiet, True)
+
+    def test_lenient_long(self):
+        options, args =  self.parse_args(['--lenient'])
+        self.assertTrue(self.are_default(options, ['lenient']))
+        self.assertFalse(args)
+        self.assertEqual(options.lenient, True)
+
+    def test_keep_going_short(self):
+        options, args =  self.parse_args(['-k'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['keep_going']))
+        self.assertEqual(options.keep_going, True)
+
+    def test_keep_going_long(self):
+        options, args =  self.parse_args(['--keep-going'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['keep_going']))
+        self.assertEqual(options.keep_going, True)
+
+    def test_no_docstrings_long(self):
+        options, args =  self.parse_args(['--no-docstrings'])
+        self.assertFalse(args)
+        self.assertTrue(self.are_default(options, ['no_docstrings']))
+        self.assertEqual(options.no_docstrings, True)
+
+    def test_file_name(self):
+        options, args =  self.parse_args(['file1.pyx', 'file2.pyx'])
+        self.assertEqual(len(args), 2)
+        self.assertEqual(args[0], 'file1.pyx')
+        self.assertEqual(args[1], 'file2.pyx')
+        self.assertTrue(self.are_default(options, []))
+
+    def test_option_first(self):
+        options, args =  self.parse_args(['-i', 'file.pyx'])
+        self.assertEqual(args, ['file.pyx'])
+        self.assertEqual(options.build_inplace, True)
+        self.assertTrue(self.are_default(options, ['build_inplace']))
+
+    def test_file_inbetween(self):
+        options, args =  self.parse_args(['-i', 'file.pyx', '-a'])
+        self.assertEqual(args, ['file.pyx'])
+        self.assertEqual(options.build_inplace, True)
+        self.assertEqual(options.annotate, 'default')
+        self.assertTrue(self.are_default(options, ['build_inplace', 'annotate']))
+
+    def test_option_trailing(self):
+        options, args =  self.parse_args(['file.pyx', '-i'])
+        self.assertEqual(args, ['file.pyx'])
+        self.assertEqual(options.build_inplace, True)
+        self.assertTrue(self.are_default(options, ['build_inplace']))
+
+    def test_interspersed_positional(self):
+        options, sources = self.parse_args([
+             'file1.pyx', '-a',
+             'file2.pyx'
+        ])
+        self.assertEqual(sources, ['file1.pyx', 'file2.pyx'])
+        self.assertEqual(options.annotate, 'default')
+        self.assertTrue(self.are_default(options, ['annotate']))
+
+    def test_interspersed_positional2(self):
+        options, sources = self.parse_args([
+             'file1.pyx', '-a',
+             'file2.pyx', '-a', 'file3.pyx'
+        ])
+        self.assertEqual(sources, ['file1.pyx', 'file2.pyx', 'file3.pyx'])
+        self.assertEqual(options.annotate, 'default')
+        self.assertTrue(self.are_default(options, ['annotate']))
+
+    def test_interspersed_positional3(self):
+        options, sources = self.parse_args([
+             '-f', 'f1', 'f2', '-a',
+             'f3', 'f4', '-a', 'f5'
+        ])
+        self.assertEqual(sources, ['f1', 'f2', 'f3', 'f4', 'f5'])
+        self.assertEqual(options.annotate, 'default')
+        self.assertEqual(options.force, True)
+        self.assertTrue(self.are_default(options, ['annotate', 'force']))
+
+    def test_wrong_option(self):
+        old_stderr = sys.stderr
+        stderr = sys.stderr = StringIO()
+        try:
+            self.assertRaises(SystemExit, self.parse_args,
+                              ['--unknown-option']
+                              )
+        finally:
+            sys.stderr = old_stderr
+        self.assertTrue(stderr.getvalue())
+
+
+class TestParseArgs(TestCase):
+    def setUp(self):
+        self._options_backup = backup_Options()
+
+    def tearDown(self):
+        restore_Options(self._options_backup)
+
+    def check_default_global_options(self, white_list=[]):
+        self.assertEqual(check_global_options(self._options_backup, white_list), "")
+
+    def test_build_set_for_inplace(self):
+        options, args = parse_args(['foo.pyx', '-i'])
+        self.assertEqual(options.build, True)
+        self.check_default_global_options()
+
+    def test_lenient(self):
+        options, sources = parse_args(['foo.pyx', '--lenient'])
+        self.assertEqual(sources, ['foo.pyx'])
+        self.assertEqual(Options.error_on_unknown_names, False)
+        self.assertEqual(Options.error_on_uninitialized, False)
+        self.check_default_global_options(['error_on_unknown_names', 'error_on_uninitialized'])
+
+    def test_annotate(self):
+        options, sources = parse_args(['foo.pyx', '--annotate'])
+        self.assertEqual(sources, ['foo.pyx'])
+        self.assertEqual(Options.annotate, 'default')
+        self.check_default_global_options(['annotate'])
+
+    def test_annotate_fullc(self):
+        options, sources = parse_args(['foo.pyx', '--annotate-fullc'])
+        self.assertEqual(sources, ['foo.pyx'])
+        self.assertEqual(Options.annotate, 'fullc')
+        self.check_default_global_options(['annotate'])
+
+    def test_no_docstrings(self):
+        options, sources = parse_args(['foo.pyx', '--no-docstrings'])
+        self.assertEqual(sources, ['foo.pyx'])
+        self.assertEqual(Options.docstrings, False)
+        self.check_default_global_options(['docstrings'])

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestDependencies.py

@@ -0,0 +1,142 @@
+import contextlib
+import os.path
+import sys
+import tempfile
+import unittest
+from io import open
+from os.path import join as pjoin
+
+from ..Dependencies import extended_iglob
+
+
+@contextlib.contextmanager
+def writable_file(dir_path, filename):
+    with open(pjoin(dir_path, filename), "w", encoding="utf8") as f:
+        yield f
+
+
+class TestGlobbing(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls._orig_dir = os.getcwd()
+        if sys.version_info[0] < 3:
+            temp_path = cls._tmpdir = tempfile.mkdtemp()
+        else:
+            cls._tmpdir = tempfile.TemporaryDirectory()
+            temp_path = cls._tmpdir.name
+        os.chdir(temp_path)
+
+        for dir1 in "abcd":
+            for dir1x in [dir1, dir1 + 'x']:
+                for dir2 in "xyz":
+                    dir_path = pjoin(dir1x, dir2)
+                    os.makedirs(dir_path)
+                    with writable_file(dir_path, "file2_pyx.pyx") as f:
+                        f.write(u'""" PYX """')
+                    with writable_file(dir_path, "file2_py.py") as f:
+                        f.write(u'""" PY """')
+
+                with writable_file(dir1x, "file1_pyx.pyx") as f:
+                    f.write(u'""" PYX """')
+                with writable_file(dir1x, "file1_py.py") as f:
+                    f.write(u'""" PY """')
+
+    @classmethod
+    def tearDownClass(cls):
+        os.chdir(cls._orig_dir)
+        if sys.version_info[0] < 3:
+            import shutil
+            shutil.rmtree(cls._tmpdir)
+        else:
+            cls._tmpdir.cleanup()
+
+    def files_equal(self, pattern, expected_files):
+        expected_files = sorted(expected_files)
+        # It's the users's choice whether '/' will appear on Windows.
+        matched_files = sorted(path.replace('/', os.sep) for path in extended_iglob(pattern))
+        self.assertListEqual(matched_files, expected_files)  # /
+
+        # Special case for Windows: also support '\' in patterns.
+        if os.sep == '\\' and '/' in pattern:
+            matched_files = sorted(extended_iglob(pattern.replace('/', '\\')))
+            self.assertListEqual(matched_files, expected_files)  # \
+
+    def test_extended_iglob_simple(self):
+        ax_files = [pjoin("a", "x", "file2_pyx.pyx"), pjoin("a", "x", "file2_py.py")]
+        self.files_equal("a/x/*", ax_files)
+        self.files_equal("a/x/*.c12", [])
+        self.files_equal("a/x/*.{py,pyx,c12}", ax_files)
+        self.files_equal("a/x/*.{py,pyx}", ax_files)
+        self.files_equal("a/x/*.{pyx}", ax_files[:1])
+        self.files_equal("a/x/*.pyx", ax_files[:1])
+        self.files_equal("a/x/*.{py}", ax_files[1:])
+        self.files_equal("a/x/*.py", ax_files[1:])
+
+    def test_extended_iglob_simple_star(self):
+        for basedir in "ad":
+            files = [
+                pjoin(basedir, dirname, filename)
+                for dirname in "xyz"
+                for filename in ["file2_pyx.pyx", "file2_py.py"]
+            ]
+            self.files_equal(basedir + "/*/*", files)
+            self.files_equal(basedir + "/*/*.c12", [])
+            self.files_equal(basedir + "/*/*.{py,pyx,c12}", files)
+            self.files_equal(basedir + "/*/*.{py,pyx}", files)
+            self.files_equal(basedir + "/*/*.{pyx}", files[::2])
+            self.files_equal(basedir + "/*/*.pyx", files[::2])
+            self.files_equal(basedir + "/*/*.{py}", files[1::2])
+            self.files_equal(basedir + "/*/*.py", files[1::2])
+
+            for subdir in "xy*":
+                files = [
+                    pjoin(basedir, dirname, filename)
+                    for dirname in "xyz"
+                    if subdir in ('*', dirname)
+                    for filename in ["file2_pyx.pyx", "file2_py.py"]
+                ]
+                path = basedir + '/' + subdir + '/'
+                self.files_equal(path + "*", files)
+                self.files_equal(path + "*.{py,pyx}", files)
+                self.files_equal(path + "*.{pyx}", files[::2])
+                self.files_equal(path + "*.pyx", files[::2])
+                self.files_equal(path + "*.{py}", files[1::2])
+                self.files_equal(path + "*.py", files[1::2])
+
+    def test_extended_iglob_double_star(self):
+        basedirs = os.listdir(".")
+        files = [
+            pjoin(basedir, dirname, filename)
+            for basedir in basedirs
+            for dirname in "xyz"
+            for filename in ["file2_pyx.pyx", "file2_py.py"]
+        ]
+        all_files = [
+            pjoin(basedir, filename)
+            for basedir in basedirs
+            for filename in ["file1_pyx.pyx", "file1_py.py"]
+        ] + files
+        self.files_equal("*/*/*", files)
+        self.files_equal("*/*/**/*", files)
+        self.files_equal("*/**/*.*", all_files)
+        self.files_equal("**/*.*", all_files)
+        self.files_equal("*/**/*.c12", [])
+        self.files_equal("**/*.c12", [])
+        self.files_equal("*/*/*.{py,pyx,c12}", files)
+        self.files_equal("*/*/**/*.{py,pyx,c12}", files)
+        self.files_equal("*/**/*/*.{py,pyx,c12}", files)
+        self.files_equal("**/*/*/*.{py,pyx,c12}", files)
+        self.files_equal("**/*.{py,pyx,c12}", all_files)
+        self.files_equal("*/*/*.{py,pyx}", files)
+        self.files_equal("**/*/*/*.{py,pyx}", files)
+        self.files_equal("*/**/*/*.{py,pyx}", files)
+        self.files_equal("**/*.{py,pyx}", all_files)
+        self.files_equal("*/*/*.{pyx}", files[::2])
+        self.files_equal("**/*.{pyx}", all_files[::2])
+        self.files_equal("*/**/*/*.pyx", files[::2])
+        self.files_equal("*/*/*.pyx", files[::2])
+        self.files_equal("**/*.pyx", all_files[::2])
+        self.files_equal("*/*/*.{py}", files[1::2])
+        self.files_equal("**/*.{py}", all_files[1::2])
+        self.files_equal("*/*/*.py", files[1::2])
+        self.files_equal("**/*.py", all_files[1::2])

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestInline.py

@@ -0,0 +1,112 @@
+import os
+import tempfile
+import unittest
+from Cython.Shadow import inline
+from Cython.Build.Inline import safe_type
+from Cython.TestUtils import CythonTest
+
+try:
+    import numpy
+    has_numpy = True
+except:
+    has_numpy = False
+
+test_kwds = dict(force=True, quiet=True)
+
+global_value = 100
+
+class TestInline(CythonTest):
+    def setUp(self):
+        CythonTest.setUp(self)
+        self._call_kwds = dict(test_kwds)
+        if os.path.isdir('TEST_TMP'):
+            lib_dir = os.path.join('TEST_TMP','inline')
+        else:
+            lib_dir = tempfile.mkdtemp(prefix='cython_inline_')
+        self._call_kwds['lib_dir'] = lib_dir
+
+    def test_simple(self):
+        self.assertEqual(inline("return 1+2", **self._call_kwds), 3)
+
+    def test_types(self):
+        self.assertEqual(inline("""
+            cimport cython
+            return cython.typeof(a), cython.typeof(b)
+        """, a=1.0, b=[], **self._call_kwds), ('double', 'list object'))
+
+    def test_locals(self):
+        a = 1
+        b = 2
+        self.assertEqual(inline("return a+b", **self._call_kwds), 3)
+
+    def test_globals(self):
+        self.assertEqual(inline("return global_value + 1", **self._call_kwds), global_value + 1)
+
+    def test_no_return(self):
+        self.assertEqual(inline("""
+            a = 1
+            cdef double b = 2
+            cdef c = []
+        """, **self._call_kwds), dict(a=1, b=2.0, c=[]))
+
+    def test_def_node(self):
+        foo = inline("def foo(x): return x * x", **self._call_kwds)['foo']
+        self.assertEqual(foo(7), 49)
+
+    def test_class_ref(self):
+        class Type(object):
+            pass
+        tp = inline("Type")['Type']
+        self.assertEqual(tp, Type)
+
+    def test_pure(self):
+        import cython as cy
+        b = inline("""
+        b = cy.declare(float, a)
+        c = cy.declare(cy.pointer(cy.float), &b)
+        return b
+        """, a=3, **self._call_kwds)
+        self.assertEqual(type(b), float)
+
+    def test_compiler_directives(self):
+        self.assertEqual(
+            inline('return sum(x)',
+                   x=[1, 2, 3],
+                   cython_compiler_directives={'boundscheck': False}),
+            6
+        )
+
+    def test_lang_version(self):
+        # GH-3419. Caching for inline code didn't always respect compiler directives.
+        inline_divcode = "def f(int a, int b): return a/b"
+        self.assertEqual(
+            inline(inline_divcode, language_level=2)['f'](5,2),
+            2
+        )
+        self.assertEqual(
+            inline(inline_divcode, language_level=3)['f'](5,2),
+            2.5
+        )
+        self.assertEqual(
+            inline(inline_divcode, language_level=2)['f'](5,2),
+            2
+        )
+
+    def test_repeated_use(self):
+        inline_mulcode = "def f(int a, int b): return a * b"
+        self.assertEqual(inline(inline_mulcode)['f'](5, 2), 10)
+        self.assertEqual(inline(inline_mulcode)['f'](5, 3), 15)
+        self.assertEqual(inline(inline_mulcode)['f'](6, 2), 12)
+        self.assertEqual(inline(inline_mulcode)['f'](5, 2), 10)
+
+        f = inline(inline_mulcode)['f']
+        self.assertEqual(f(5, 2), 10)
+        self.assertEqual(f(5, 3), 15)
+
+    @unittest.skipIf(not has_numpy, "NumPy is not available")
+    def test_numpy(self):
+        import numpy
+        a = numpy.ndarray((10, 20))
+        a[0,0] = 10
+        self.assertEqual(safe_type(a), 'numpy.ndarray[numpy.float64_t, ndim=2]')
+        self.assertEqual(inline("return a[0,0]", a=a, **self._call_kwds), 10.0)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestIpythonMagic.py

@@ -0,0 +1,295 @@
+# -*- coding: utf-8 -*-
+# tag: ipython
+
+"""Tests for the Cython magics extension."""
+
+from __future__ import absolute_import
+
+import os
+import io
+import sys
+from contextlib import contextmanager
+from unittest import skipIf
+
+from Cython.Build import IpythonMagic
+from Cython.TestUtils import CythonTest
+from Cython.Compiler.Annotate import AnnotationCCodeWriter
+
+try:
+    import IPython.testing.globalipapp
+except ImportError:
+    # Disable tests and fake helpers for initialisation below.
+    def skip_if_not_installed(_):
+        return None
+else:
+    def skip_if_not_installed(c):
+        return c
+
+# not using IPython's decorators here because they depend on "nose"
+skip_win32 = skipIf(sys.platform == 'win32', "Skip on Windows")
+skip_py27 = skipIf(sys.version_info[:2] == (2,7), "Disabled in Py2.7")
+
+try:
+    # disable IPython history thread before it gets started to avoid having to clean it up
+    from IPython.core.history import HistoryManager
+    HistoryManager.enabled = False
+except ImportError:
+    pass
+
+
+@contextmanager
+def capture_output():
+    backup = sys.stdout, sys.stderr
+    try:
+        replacement = [
+             io.TextIOWrapper(io.BytesIO(), encoding=sys.stdout.encoding),
+             io.TextIOWrapper(io.BytesIO(), encoding=sys.stderr.encoding),
+        ]
+        sys.stdout, sys.stderr = replacement
+        output = []
+        yield output
+    finally:
+        sys.stdout, sys.stderr = backup
+        for wrapper in replacement:
+            wrapper.seek(0)  # rewind
+            output.append(wrapper.read())
+            wrapper.close()
+
+
+code = u"""\
+def f(x):
+    return 2*x
+"""
+
+cython3_code = u"""\
+def f(int x):
+    return 2 / x
+
+def call(x):
+    return f(*(x,))
+"""
+
+pgo_cython3_code = cython3_code + u"""\
+def main():
+    for _ in range(100): call(5)
+main()
+"""
+
+compile_error_code = u'''\
+cdef extern from *:
+    """
+    xxx a=1;
+    """
+    int a;
+def doit():
+    return a
+'''
+
+compile_warning_code = u'''\
+cdef extern from *:
+    """
+    #pragma message ( "CWarning" )
+    int a = 42;
+    """
+    int a;
+def doit():
+    return a
+'''
+
+
+@skip_if_not_installed
+class TestIPythonMagic(CythonTest):
+
+    @classmethod
+    def setUpClass(cls):
+        CythonTest.setUpClass()
+        cls._ip = IPython.testing.globalipapp.get_ipython()
+
+    def setUp(self):
+        CythonTest.setUp(self)
+        self._ip.extension_manager.load_extension('cython')
+
+    def test_cython_inline(self):
+        ip = self._ip
+        ip.ex('a=10; b=20')
+        result = ip.run_cell_magic('cython_inline', '', 'return a+b')
+        self.assertEqual(result, 30)
+
+    @skip_win32
+    def test_cython_pyximport(self):
+        ip = self._ip
+        module_name = '_test_cython_pyximport'
+        ip.run_cell_magic('cython_pyximport', module_name, code)
+        ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+        ip.run_cell_magic('cython_pyximport', module_name, code)
+        ip.ex('h = f(-10)')
+        self.assertEqual(ip.user_ns['h'], -20.0)
+        try:
+            os.remove(module_name + '.pyx')
+        except OSError:
+            pass
+
+    def test_cython(self):
+        ip = self._ip
+        ip.run_cell_magic('cython', '', code)
+        ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+
+    def test_cython_name(self):
+        # The Cython module named 'mymodule' defines the function f.
+        ip = self._ip
+        ip.run_cell_magic('cython', '--name=mymodule', code)
+        # This module can now be imported in the interactive namespace.
+        ip.ex('import mymodule; g = mymodule.f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+
+    def test_cython_language_level(self):
+        # The Cython cell defines the functions f() and call().
+        ip = self._ip
+        ip.run_cell_magic('cython', '', cython3_code)
+        ip.ex('g = f(10); h = call(10)')
+        if sys.version_info[0] < 3:
+            self.assertEqual(ip.user_ns['g'], 2 // 10)
+            self.assertEqual(ip.user_ns['h'], 2 // 10)
+        else:
+            self.assertEqual(ip.user_ns['g'], 2.0 / 10.0)
+            self.assertEqual(ip.user_ns['h'], 2.0 / 10.0)
+
+    def test_cython3(self):
+        # The Cython cell defines the functions f() and call().
+        ip = self._ip
+        ip.run_cell_magic('cython', '-3', cython3_code)
+        ip.ex('g = f(10); h = call(10)')
+        self.assertEqual(ip.user_ns['g'], 2.0 / 10.0)
+        self.assertEqual(ip.user_ns['h'], 2.0 / 10.0)
+
+    def test_cython2(self):
+        # The Cython cell defines the functions f() and call().
+        ip = self._ip
+        ip.run_cell_magic('cython', '-2', cython3_code)
+        ip.ex('g = f(10); h = call(10)')
+        self.assertEqual(ip.user_ns['g'], 2 // 10)
+        self.assertEqual(ip.user_ns['h'], 2 // 10)
+
+    def test_cython_compile_error_shown(self):
+        ip = self._ip
+        with capture_output() as out:
+            ip.run_cell_magic('cython', '-3', compile_error_code)
+        captured_out, captured_err = out
+
+        # it could be that c-level output is captured by distutil-extension
+        # (and not by us) and is printed to stdout:
+        captured_all = captured_out + "\n" + captured_err
+        self.assertTrue("error" in captured_all, msg="error in " + captured_all)
+
+    def test_cython_link_error_shown(self):
+        ip = self._ip
+        with capture_output() as out:
+            ip.run_cell_magic('cython', '-3 -l=xxxxxxxx', code)
+        captured_out, captured_err = out
+
+        # it could be that c-level output is captured by distutil-extension
+        # (and not by us) and is printed to stdout:
+        captured_all = captured_out + "\n!" + captured_err
+        self.assertTrue("error" in captured_all, msg="error in " + captured_all)
+
+    def test_cython_warning_shown(self):
+        ip = self._ip
+        with capture_output() as out:
+            # force rebuild, otherwise no warning as after the first success
+            # no build step is performed
+            ip.run_cell_magic('cython', '-3 -f', compile_warning_code)
+        captured_out, captured_err = out
+
+        # check that warning was printed to stdout even if build hasn't failed
+        self.assertTrue("CWarning" in captured_out)
+
+    @skip_py27  # Not strictly broken in Py2.7 but currently fails in CI due to C compiler issues.
+    @skip_win32
+    def test_cython3_pgo(self):
+        # The Cython cell defines the functions f() and call().
+        ip = self._ip
+        ip.run_cell_magic('cython', '-3 --pgo', pgo_cython3_code)
+        ip.ex('g = f(10); h = call(10); main()')
+        self.assertEqual(ip.user_ns['g'], 2.0 / 10.0)
+        self.assertEqual(ip.user_ns['h'], 2.0 / 10.0)
+
+    @skip_win32
+    def test_extlibs(self):
+        ip = self._ip
+        code = u"""
+from libc.math cimport sin
+x = sin(0.0)
+        """
+        ip.user_ns['x'] = 1
+        ip.run_cell_magic('cython', '-l m', code)
+        self.assertEqual(ip.user_ns['x'], 0)
+
+
+    def test_cython_verbose(self):
+        ip = self._ip
+        ip.run_cell_magic('cython', '--verbose', code)
+        ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+
+    def test_cython_verbose_thresholds(self):
+        @contextmanager
+        def mock_distutils():
+            class MockLog:
+                DEBUG = 1
+                INFO = 2
+                thresholds = [INFO]
+
+                def set_threshold(self, val):
+                    self.thresholds.append(val)
+                    return self.thresholds[-2]
+
+
+            new_log = MockLog()
+            old_log = IpythonMagic.distutils.log
+            try:
+                IpythonMagic.distutils.log = new_log
+                yield new_log
+            finally:
+                IpythonMagic.distutils.log = old_log
+
+        ip = self._ip
+        with mock_distutils() as verbose_log:
+            ip.run_cell_magic('cython', '--verbose', code)
+            ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+        self.assertEqual([verbose_log.INFO, verbose_log.DEBUG, verbose_log.INFO],
+                          verbose_log.thresholds)
+
+        with mock_distutils() as normal_log:
+            ip.run_cell_magic('cython', '', code)
+            ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+        self.assertEqual([normal_log.INFO], normal_log.thresholds)
+
+    def test_cython_no_annotate(self):
+        ip = self._ip
+        html = ip.run_cell_magic('cython', '', code)
+        self.assertTrue(html is None)
+
+    def test_cython_annotate(self):
+        ip = self._ip
+        html = ip.run_cell_magic('cython', '--annotate', code)
+        # somewhat brittle way to differentiate between annotated htmls
+        # with/without complete source code:
+        self.assertTrue(AnnotationCCodeWriter.COMPLETE_CODE_TITLE not in html.data)
+
+    def test_cython_annotate_default(self):
+        ip = self._ip
+        html = ip.run_cell_magic('cython', '-a', code)
+        # somewhat brittle way to differentiate between annotated htmls
+        # with/without complete source code:
+        self.assertTrue(AnnotationCCodeWriter.COMPLETE_CODE_TITLE not in html.data)
+
+    def test_cython_annotate_complete_c_code(self):
+        ip = self._ip
+        html = ip.run_cell_magic('cython', '--annotate-fullc', code)
+        # somewhat brittle way to differentiate between annotated htmls
+        # with/without complete source code:
+        self.assertTrue(AnnotationCCodeWriter.COMPLETE_CODE_TITLE in html.data)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestRecythonize.py

@@ -0,0 +1,212 @@
+import shutil
+import os
+import tempfile
+import time
+
+import Cython.Build.Dependencies
+import Cython.Utils
+from Cython.TestUtils import CythonTest
+
+
+def fresh_cythonize(*args, **kwargs):
+    Cython.Utils.clear_function_caches()
+    Cython.Build.Dependencies._dep_tree = None  # discard method caches
+    Cython.Build.Dependencies.cythonize(*args, **kwargs)
+
+class TestRecythonize(CythonTest):
+
+    def setUp(self):
+        CythonTest.setUp(self)
+        self.temp_dir = (
+            tempfile.mkdtemp(
+                prefix='recythonize-test',
+                dir='TEST_TMP' if os.path.isdir('TEST_TMP') else None
+            )
+        )
+
+    def tearDown(self):
+        CythonTest.tearDown(self)
+        shutil.rmtree(self.temp_dir)
+
+    def test_recythonize_pyx_on_pxd_change(self):
+
+        src_dir = tempfile.mkdtemp(prefix='src', dir=self.temp_dir)
+
+        a_pxd = os.path.join(src_dir, 'a.pxd')
+        a_pyx = os.path.join(src_dir, 'a.pyx')
+        a_c = os.path.join(src_dir, 'a.c')
+        dep_tree = Cython.Build.Dependencies.create_dependency_tree()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef int value\n')
+
+        with open(a_pyx, 'w') as f:
+            f.write('value = 1\n')
+
+
+        # The dependencies for "a.pyx" are "a.pxd" and "a.pyx".
+        self.assertEqual({a_pxd, a_pyx}, dep_tree.all_dependencies(a_pyx))
+
+        # Cythonize to create a.c
+        fresh_cythonize(a_pyx)
+
+        # Sleep to address coarse time-stamp precision.
+        time.sleep(1)
+
+        with open(a_c) as f:
+            a_c_contents1 = f.read()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef double value\n')
+
+        fresh_cythonize(a_pyx)
+
+        with open(a_c) as f:
+            a_c_contents2 = f.read()
+
+        self.assertTrue("__pyx_v_1a_value = 1;" in a_c_contents1)
+        self.assertFalse("__pyx_v_1a_value = 1;" in a_c_contents2)
+        self.assertTrue("__pyx_v_1a_value = 1.0;" in a_c_contents2)
+        self.assertFalse("__pyx_v_1a_value = 1.0;" in a_c_contents1)
+
+
+    def test_recythonize_py_on_pxd_change(self):
+
+        src_dir = tempfile.mkdtemp(prefix='src', dir=self.temp_dir)
+
+        a_pxd = os.path.join(src_dir, 'a.pxd')
+        a_py = os.path.join(src_dir, 'a.py')
+        a_c = os.path.join(src_dir, 'a.c')
+        dep_tree = Cython.Build.Dependencies.create_dependency_tree()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef int value\n')
+
+        with open(a_py, 'w') as f:
+            f.write('value = 1\n')
+
+
+        # The dependencies for "a.py" are "a.pxd" and "a.py".
+        self.assertEqual({a_pxd, a_py}, dep_tree.all_dependencies(a_py))
+
+        # Cythonize to create a.c
+        fresh_cythonize(a_py)
+
+        # Sleep to address coarse time-stamp precision.
+        time.sleep(1)
+
+        with open(a_c) as f:
+            a_c_contents1 = f.read()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef double value\n')
+
+        fresh_cythonize(a_py)
+
+        with open(a_c) as f:
+            a_c_contents2 = f.read()
+
+
+        self.assertTrue("__pyx_v_1a_value = 1;" in a_c_contents1)
+        self.assertFalse("__pyx_v_1a_value = 1;" in a_c_contents2)
+        self.assertTrue("__pyx_v_1a_value = 1.0;" in a_c_contents2)
+        self.assertFalse("__pyx_v_1a_value = 1.0;" in a_c_contents1)
+
+    def test_recythonize_pyx_on_dep_pxd_change(self):
+        src_dir = tempfile.mkdtemp(prefix='src', dir=self.temp_dir)
+
+        a_pxd = os.path.join(src_dir, 'a.pxd')
+        a_pyx = os.path.join(src_dir, 'a.pyx')
+        b_pyx = os.path.join(src_dir, 'b.pyx')
+        b_c = os.path.join(src_dir, 'b.c')
+        dep_tree = Cython.Build.Dependencies.create_dependency_tree()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef int value\n')
+
+        with open(a_pyx, 'w') as f:
+            f.write('value = 1\n')
+
+        with open(b_pyx, 'w') as f:
+            f.write('cimport a\n' + 'a.value = 2\n')
+
+
+        # The dependencies for "b.pyx" are "a.pxd" and "b.pyx".
+        self.assertEqual({a_pxd, b_pyx}, dep_tree.all_dependencies(b_pyx))
+
+
+        # Cythonize to create b.c
+        fresh_cythonize([a_pyx, b_pyx])
+
+        # Sleep to address coarse time-stamp precision.
+        time.sleep(1)
+
+        with open(b_c) as f:
+            b_c_contents1 = f.read()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef double value\n')
+
+        fresh_cythonize([a_pyx, b_pyx])
+
+        with open(b_c) as f:
+            b_c_contents2 = f.read()
+
+
+
+        self.assertTrue("__pyx_v_1a_value = 2;" in b_c_contents1)
+        self.assertFalse("__pyx_v_1a_value = 2;" in b_c_contents2)
+        self.assertTrue("__pyx_v_1a_value = 2.0;" in b_c_contents2)
+        self.assertFalse("__pyx_v_1a_value = 2.0;" in b_c_contents1)
+
+
+
+    def test_recythonize_py_on_dep_pxd_change(self):
+
+        src_dir = tempfile.mkdtemp(prefix='src', dir=self.temp_dir)
+
+        a_pxd = os.path.join(src_dir, 'a.pxd')
+        a_pyx = os.path.join(src_dir, 'a.pyx')
+        b_pxd = os.path.join(src_dir, 'b.pxd')
+        b_py = os.path.join(src_dir, 'b.py')
+        b_c = os.path.join(src_dir, 'b.c')
+        dep_tree = Cython.Build.Dependencies.create_dependency_tree()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef int value\n')
+
+        with open(a_pyx, 'w') as f:
+            f.write('value = 1\n')
+
+        with open(b_pxd, 'w') as f:
+            f.write('cimport a\n')
+
+        with open(b_py, 'w') as f:
+            f.write('a.value = 2\n')
+
+
+        # The dependencies for b.py are "a.pxd", "b.pxd" and "b.py".
+        self.assertEqual({a_pxd, b_pxd, b_py}, dep_tree.all_dependencies(b_py))
+
+
+        # Cythonize to create b.c
+        fresh_cythonize([a_pyx, b_py])
+
+        # Sleep to address coarse time-stamp precision.
+        time.sleep(1)
+
+        with open(b_c) as f:
+            b_c_contents1 = f.read()
+
+        with open(a_pxd, 'w') as f:
+            f.write('cdef double value\n')
+
+        fresh_cythonize([a_pyx, b_py])
+
+        with open(b_c) as f:
+            b_c_contents2 = f.read()
+
+        self.assertTrue("__pyx_v_1a_value = 2;" in b_c_contents1)
+        self.assertFalse("__pyx_v_1a_value = 2;" in b_c_contents2)
+        self.assertTrue("__pyx_v_1a_value = 2.0;" in b_c_contents2)
+        self.assertFalse("__pyx_v_1a_value = 2.0;" in b_c_contents1)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/TestStripLiterals.py

@@ -0,0 +1,56 @@
+from Cython.Build.Dependencies import strip_string_literals
+
+from Cython.TestUtils import CythonTest
+
+class TestStripLiterals(CythonTest):
+
+    def t(self, before, expected):
+        actual, literals = strip_string_literals(before, prefix="_L")
+        self.assertEqual(expected, actual)
+        for key, value in literals.items():
+            actual = actual.replace(key, value)
+        self.assertEqual(before, actual)
+
+    def test_empty(self):
+        self.t("", "")
+
+    def test_single_quote(self):
+        self.t("'x'", "'_L1_'")
+
+    def test_double_quote(self):
+        self.t('"x"', '"_L1_"')
+
+    def test_nested_quotes(self):
+        self.t(""" '"' "'" """, """ '_L1_' "_L2_" """)
+
+    def test_triple_quote(self):
+        self.t(" '''a\n''' ", " '''_L1_''' ")
+
+    def test_backslash(self):
+        self.t(r"'a\'b'", "'_L1_'")
+        self.t(r"'a\\'", "'_L1_'")
+        self.t(r"'a\\\'b'", "'_L1_'")
+
+    def test_unicode(self):
+        self.t("u'abc'", "u'_L1_'")
+
+    def test_raw(self):
+        self.t(r"r'abc\\'", "r'_L1_'")
+
+    def test_raw_unicode(self):
+        self.t(r"ru'abc\\'", "ru'_L1_'")
+
+    def test_comment(self):
+        self.t("abc # foo", "abc #_L1_")
+
+    def test_comment_and_quote(self):
+        self.t("abc # 'x'", "abc #_L1_")
+        self.t("'abc#'", "'_L1_'")
+
+    def test_include(self):
+        self.t("include 'a.pxi' # something here",
+               "include '_L1_' #_L2_")
+
+    def test_extern(self):
+        self.t("cdef extern from 'a.h': # comment",
+               "cdef extern from '_L1_': #_L2_")

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/Tests/__init__.py

@@ -0,0 +1 @@
+# empty file

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Build/__init__.py

@@ -0,0 +1,14 @@
+from .Dependencies import cythonize
+
+import sys
+if sys.version_info < (3, 7):
+    from .Distutils import build_ext
+del sys
+
+
+def __getattr__(name):
+    if name == 'build_ext':
+        # Lazy import, fails if distutils is not available (in Python 3.12+).
+        from .Distutils import build_ext
+        return build_ext
+    raise AttributeError("module '%s' has no attribute '%s'" % (__name__, name))

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/CodeWriter.py

@@ -0,0 +1,820 @@
+"""
+Serializes a Cython code tree to Cython code. This is primarily useful for
+debugging and testing purposes.
+The output is in a strict format, no whitespace or comments from the input
+is preserved (and it could not be as it is not present in the code tree).
+"""
+
+from __future__ import absolute_import, print_function
+
+from .Compiler.Visitor import TreeVisitor
+from .Compiler.ExprNodes import *
+from .Compiler.Nodes import CSimpleBaseTypeNode
+
+
+class LinesResult(object):
+    def __init__(self):
+        self.lines = []
+        self.s = u""
+
+    def put(self, s):
+        self.s += s
+
+    def newline(self):
+        self.lines.append(self.s)
+        self.s = u""
+
+    def putline(self, s):
+        self.put(s)
+        self.newline()
+
+
+class DeclarationWriter(TreeVisitor):
+    """
+    A Cython code writer that is limited to declarations nodes.
+    """
+
+    indent_string = u"    "
+
+    def __init__(self, result=None):
+        super(DeclarationWriter, self).__init__()
+        if result is None:
+            result = LinesResult()
+        self.result = result
+        self.numindents = 0
+        self.tempnames = {}
+        self.tempblockindex = 0
+
+    def write(self, tree):
+        self.visit(tree)
+        return self.result
+
+    def indent(self):
+        self.numindents += 1
+
+    def dedent(self):
+        self.numindents -= 1
+
+    def startline(self, s=u""):
+        self.result.put(self.indent_string * self.numindents + s)
+
+    def put(self, s):
+        self.result.put(s)
+
+    def putline(self, s):
+        self.result.putline(self.indent_string * self.numindents + s)
+
+    def endline(self, s=u""):
+        self.result.putline(s)
+
+    def line(self, s):
+        self.startline(s)
+        self.endline()
+
+    def comma_separated_list(self, items, output_rhs=False):
+        if len(items) > 0:
+            for item in items[:-1]:
+                self.visit(item)
+                if output_rhs and item.default is not None:
+                    self.put(u" = ")
+                    self.visit(item.default)
+                self.put(u", ")
+            self.visit(items[-1])
+            if output_rhs and items[-1].default is not None:
+                self.put(u" = ")
+                self.visit(items[-1].default)
+
+    def _visit_indented(self, node):
+        self.indent()
+        self.visit(node)
+        self.dedent()
+
+    def visit_Node(self, node):
+        raise AssertionError("Node not handled by serializer: %r" % node)
+
+    def visit_ModuleNode(self, node):
+        self.visitchildren(node)
+
+    def visit_StatListNode(self, node):
+        self.visitchildren(node)
+
+    def visit_CDefExternNode(self, node):
+        if node.include_file is None:
+            file = u'*'
+        else:
+            file = u'"%s"' % node.include_file
+        self.putline(u"cdef extern from %s:" % file)
+        self._visit_indented(node.body)
+
+    def visit_CPtrDeclaratorNode(self, node):
+        self.put('*')
+        self.visit(node.base)
+
+    def visit_CReferenceDeclaratorNode(self, node):
+        self.put('&')
+        self.visit(node.base)
+
+    def visit_CArrayDeclaratorNode(self, node):
+        self.visit(node.base)
+        self.put(u'[')
+        if node.dimension is not None:
+            self.visit(node.dimension)
+        self.put(u']')
+
+    def visit_CFuncDeclaratorNode(self, node):
+        # TODO: except, gil, etc.
+        self.visit(node.base)
+        self.put(u'(')
+        self.comma_separated_list(node.args)
+        self.endline(u')')
+
+    def visit_CNameDeclaratorNode(self, node):
+        self.put(node.name)
+
+    def visit_CSimpleBaseTypeNode(self, node):
+        # See Parsing.p_sign_and_longness
+        if node.is_basic_c_type:
+            self.put(("unsigned ", "", "signed ")[node.signed])
+            if node.longness < 0:
+                self.put("short " * -node.longness)
+            elif node.longness > 0:
+                self.put("long " * node.longness)
+        if node.name is not None:
+            self.put(node.name)
+
+    def visit_CComplexBaseTypeNode(self, node):
+        self.visit(node.base_type)
+        self.visit(node.declarator)
+
+    def visit_CNestedBaseTypeNode(self, node):
+        self.visit(node.base_type)
+        self.put(u'.')
+        self.put(node.name)
+
+    def visit_TemplatedTypeNode(self, node):
+        self.visit(node.base_type_node)
+        self.put(u'[')
+        self.comma_separated_list(node.positional_args + node.keyword_args.key_value_pairs)
+        self.put(u']')
+
+    def visit_CVarDefNode(self, node):
+        self.startline(u"cdef ")
+        self.visit(node.base_type)
+        self.put(u" ")
+        self.comma_separated_list(node.declarators, output_rhs=True)
+        self.endline()
+
+    def _visit_container_node(self, node, decl, extras, attributes):
+        # TODO: visibility
+        self.startline(decl)
+        if node.name:
+            self.put(u' ')
+            self.put(node.name)
+            if node.cname is not None:
+                self.put(u' "%s"' % node.cname)
+        if extras:
+            self.put(extras)
+        self.endline(':')
+        self.indent()
+        if not attributes:
+            self.putline('pass')
+        else:
+            for attribute in attributes:
+                self.visit(attribute)
+        self.dedent()
+
+    def visit_CStructOrUnionDefNode(self, node):
+        if node.typedef_flag:
+            decl = u'ctypedef '
+        else:
+            decl = u'cdef '
+        if node.visibility == 'public':
+            decl += u'public '
+        if node.packed:
+            decl += u'packed '
+        decl += node.kind
+        self._visit_container_node(node, decl, None, node.attributes)
+
+    def visit_CppClassNode(self, node):
+        extras = ""
+        if node.templates:
+            extras = u"[%s]" % ", ".join(node.templates)
+        if node.base_classes:
+            extras += "(%s)" % ", ".join(node.base_classes)
+        self._visit_container_node(node, u"cdef cppclass", extras, node.attributes)
+
+    def visit_CEnumDefNode(self, node):
+        self._visit_container_node(node, u"cdef enum", None, node.items)
+
+    def visit_CEnumDefItemNode(self, node):
+        self.startline(node.name)
+        if node.cname:
+            self.put(u' "%s"' % node.cname)
+        if node.value:
+            self.put(u" = ")
+            self.visit(node.value)
+        self.endline()
+
+    def visit_CClassDefNode(self, node):
+        assert not node.module_name
+        if node.decorators:
+            for decorator in node.decorators:
+                self.visit(decorator)
+        self.startline(u"cdef class ")
+        self.put(node.class_name)
+        if node.base_class_name:
+            self.put(u"(")
+            if node.base_class_module:
+                self.put(node.base_class_module)
+                self.put(u".")
+            self.put(node.base_class_name)
+            self.put(u")")
+        self.endline(u":")
+        self._visit_indented(node.body)
+
+    def visit_CTypeDefNode(self, node):
+        self.startline(u"ctypedef ")
+        self.visit(node.base_type)
+        self.put(u" ")
+        self.visit(node.declarator)
+        self.endline()
+
+    def visit_FuncDefNode(self, node):
+        # TODO: support cdef + cpdef functions
+        self.startline(u"def %s(" % node.name)
+        self.comma_separated_list(node.args)
+        self.endline(u"):")
+        self._visit_indented(node.body)
+
+    def visit_CFuncDefNode(self, node):
+        self.startline(u'cpdef ' if node.overridable else u'cdef ')
+        if node.modifiers:
+            self.put(' '.join(node.modifiers))
+            self.put(' ')
+        if node.visibility != 'private':
+            self.put(node.visibility)
+            self.put(u' ')
+        if node.api:
+            self.put(u'api ')
+
+        if node.base_type:
+            self.visit(node.base_type)
+            if node.base_type.name is not None:
+                self.put(u' ')
+
+        # visit the CFuncDeclaratorNode, but put a `:` at the end of line
+        self.visit(node.declarator.base)
+        self.put(u'(')
+        self.comma_separated_list(node.declarator.args)
+        self.endline(u'):')
+
+        self._visit_indented(node.body)
+
+    def visit_CArgDeclNode(self, node):
+        # For "CSimpleBaseTypeNode", the variable type may have been parsed as type.
+        # For other node types, the "name" is always None.
+        if not isinstance(node.base_type, CSimpleBaseTypeNode) or \
+                node.base_type.name is not None:
+            self.visit(node.base_type)
+
+            # If we printed something for "node.base_type", we may need to print an extra ' '.
+            #
+            # Special case: if "node.declarator" is a "CNameDeclaratorNode",
+            # its "name" might be an empty string, for example, for "cdef f(x)".
+            if node.declarator.declared_name():
+                self.put(u" ")
+        self.visit(node.declarator)
+        if node.default is not None:
+            self.put(u" = ")
+            self.visit(node.default)
+
+    def visit_CImportStatNode(self, node):
+        self.startline(u"cimport ")
+        self.put(node.module_name)
+        if node.as_name:
+            self.put(u" as ")
+            self.put(node.as_name)
+        self.endline()
+
+    def visit_FromCImportStatNode(self, node):
+        self.startline(u"from ")
+        self.put(node.module_name)
+        self.put(u" cimport ")
+        first = True
+        for pos, name, as_name, kind in node.imported_names:
+            assert kind is None
+            if first:
+                first = False
+            else:
+                self.put(u", ")
+            self.put(name)
+            if as_name:
+                self.put(u" as ")
+                self.put(as_name)
+        self.endline()
+
+    def visit_NameNode(self, node):
+        self.put(node.name)
+
+    def visit_DecoratorNode(self, node):
+        self.startline("@")
+        self.visit(node.decorator)
+        self.endline()
+
+    def visit_PassStatNode(self, node):
+        self.startline(u"pass")
+        self.endline()
+
+
+class StatementWriter(DeclarationWriter):
+    """
+    A Cython code writer for most language statement features.
+    """
+
+    def visit_SingleAssignmentNode(self, node):
+        self.startline()
+        self.visit(node.lhs)
+        self.put(u" = ")
+        self.visit(node.rhs)
+        self.endline()
+
+    def visit_CascadedAssignmentNode(self, node):
+        self.startline()
+        for lhs in node.lhs_list:
+            self.visit(lhs)
+            self.put(u" = ")
+        self.visit(node.rhs)
+        self.endline()
+
+    def visit_PrintStatNode(self, node):
+        self.startline(u"print ")
+        self.comma_separated_list(node.arg_tuple.args)
+        if not node.append_newline:
+            self.put(u",")
+        self.endline()
+
+    def visit_ForInStatNode(self, node):
+        self.startline(u"for ")
+        if node.target.is_sequence_constructor:
+            self.comma_separated_list(node.target.args)
+        else:
+            self.visit(node.target)
+        self.put(u" in ")
+        self.visit(node.iterator.sequence)
+        self.endline(u":")
+        self._visit_indented(node.body)
+        if node.else_clause is not None:
+            self.line(u"else:")
+            self._visit_indented(node.else_clause)
+
+    def visit_IfStatNode(self, node):
+        # The IfClauseNode is handled directly without a separate match
+        # for clariy.
+        self.startline(u"if ")
+        self.visit(node.if_clauses[0].condition)
+        self.endline(":")
+        self._visit_indented(node.if_clauses[0].body)
+        for clause in node.if_clauses[1:]:
+            self.startline("elif ")
+            self.visit(clause.condition)
+            self.endline(":")
+            self._visit_indented(clause.body)
+        if node.else_clause is not None:
+            self.line("else:")
+            self._visit_indented(node.else_clause)
+
+    def visit_WhileStatNode(self, node):
+        self.startline(u"while ")
+        self.visit(node.condition)
+        self.endline(u":")
+        self._visit_indented(node.body)
+        if node.else_clause is not None:
+            self.line("else:")
+            self._visit_indented(node.else_clause)
+
+    def visit_ContinueStatNode(self, node):
+        self.line(u"continue")
+
+    def visit_BreakStatNode(self, node):
+        self.line(u"break")
+
+    def visit_SequenceNode(self, node):
+        self.comma_separated_list(node.args)  # Might need to discover whether we need () around tuples...hmm...
+
+    def visit_ExprStatNode(self, node):
+        self.startline()
+        self.visit(node.expr)
+        self.endline()
+
+    def visit_InPlaceAssignmentNode(self, node):
+        self.startline()
+        self.visit(node.lhs)
+        self.put(u" %s= " % node.operator)
+        self.visit(node.rhs)
+        self.endline()
+
+    def visit_WithStatNode(self, node):
+        self.startline()
+        self.put(u"with ")
+        self.visit(node.manager)
+        if node.target is not None:
+            self.put(u" as ")
+            self.visit(node.target)
+        self.endline(u":")
+        self._visit_indented(node.body)
+
+    def visit_TryFinallyStatNode(self, node):
+        self.line(u"try:")
+        self._visit_indented(node.body)
+        self.line(u"finally:")
+        self._visit_indented(node.finally_clause)
+
+    def visit_TryExceptStatNode(self, node):
+        self.line(u"try:")
+        self._visit_indented(node.body)
+        for x in node.except_clauses:
+            self.visit(x)
+        if node.else_clause is not None:
+            self.visit(node.else_clause)
+
+    def visit_ExceptClauseNode(self, node):
+        self.startline(u"except")
+        if node.pattern is not None:
+            self.put(u" ")
+            self.visit(node.pattern)
+        if node.target is not None:
+            self.put(u", ")
+            self.visit(node.target)
+        self.endline(":")
+        self._visit_indented(node.body)
+
+    def visit_ReturnStatNode(self, node):
+        self.startline("return")
+        if node.value is not None:
+            self.put(u" ")
+            self.visit(node.value)
+        self.endline()
+
+    def visit_ReraiseStatNode(self, node):
+        self.line("raise")
+
+    def visit_ImportNode(self, node):
+        self.put(u"(import %s)" % node.module_name.value)
+
+    def visit_TempsBlockNode(self, node):
+        """
+        Temporaries are output like $1_1', where the first number is
+        an index of the TempsBlockNode and the second number is an index
+        of the temporary which that block allocates.
+        """
+        idx = 0
+        for handle in node.temps:
+            self.tempnames[handle] = "$%d_%d" % (self.tempblockindex, idx)
+            idx += 1
+        self.tempblockindex += 1
+        self.visit(node.body)
+
+    def visit_TempRefNode(self, node):
+        self.put(self.tempnames[node.handle])
+
+
+class ExpressionWriter(TreeVisitor):
+    """
+    A Cython code writer that is intentionally limited to expressions.
+    """
+
+    def __init__(self, result=None):
+        super(ExpressionWriter, self).__init__()
+        if result is None:
+            result = u""
+        self.result = result
+        self.precedence = [0]
+
+    def write(self, tree):
+        self.visit(tree)
+        return self.result
+
+    def put(self, s):
+        self.result += s
+
+    def remove(self, s):
+        if self.result.endswith(s):
+            self.result = self.result[:-len(s)]
+
+    def comma_separated_list(self, items):
+        if len(items) > 0:
+            for item in items[:-1]:
+                self.visit(item)
+                self.put(u", ")
+            self.visit(items[-1])
+
+    def visit_Node(self, node):
+        raise AssertionError("Node not handled by serializer: %r" % node)
+
+    def visit_IntNode(self, node):
+        self.put(node.value)
+
+    def visit_FloatNode(self, node):
+        self.put(node.value)
+
+    def visit_NoneNode(self, node):
+        self.put(u"None")
+
+    def visit_NameNode(self, node):
+        self.put(node.name)
+
+    def visit_EllipsisNode(self, node):
+        self.put(u"...")
+
+    def visit_BoolNode(self, node):
+        self.put(str(node.value))
+
+    def visit_ConstNode(self, node):
+        self.put(str(node.value))
+
+    def visit_ImagNode(self, node):
+        self.put(node.value)
+        self.put(u"j")
+
+    def emit_string(self, node, prefix=u""):
+        repr_val = repr(node.value)
+        if repr_val[0] in 'ub':
+            repr_val = repr_val[1:]
+        self.put(u"%s%s" % (prefix, repr_val))
+
+    def visit_BytesNode(self, node):
+        self.emit_string(node, u"b")
+
+    def visit_StringNode(self, node):
+        self.emit_string(node)
+
+    def visit_UnicodeNode(self, node):
+        self.emit_string(node, u"u")
+
+    def emit_sequence(self, node, parens=(u"", u"")):
+        open_paren, close_paren = parens
+        items = node.subexpr_nodes()
+        self.put(open_paren)
+        self.comma_separated_list(items)
+        self.put(close_paren)
+
+    def visit_ListNode(self, node):
+        self.emit_sequence(node, u"[]")
+
+    def visit_TupleNode(self, node):
+        self.emit_sequence(node, u"()")
+
+    def visit_SetNode(self, node):
+        if len(node.subexpr_nodes()) > 0:
+            self.emit_sequence(node, u"{}")
+        else:
+            self.put(u"set()")
+
+    def visit_DictNode(self, node):
+        self.emit_sequence(node, u"{}")
+
+    def visit_DictItemNode(self, node):
+        self.visit(node.key)
+        self.put(u": ")
+        self.visit(node.value)
+
+    unop_precedence = {
+        'not': 3, '!': 3,
+        '+': 11, '-': 11, '~': 11,
+    }
+    binop_precedence = {
+        'or': 1,
+        'and': 2,
+        # unary: 'not': 3, '!': 3,
+        'in': 4, 'not_in': 4, 'is': 4, 'is_not': 4, '<': 4, '<=': 4, '>': 4, '>=': 4, '!=': 4, '==': 4,
+        '|': 5,
+        '^': 6,
+        '&': 7,
+        '<<': 8, '>>': 8,
+        '+': 9, '-': 9,
+        '*': 10, '@': 10, '/': 10, '//': 10, '%': 10,
+        # unary: '+': 11, '-': 11, '~': 11
+        '**': 12,
+    }
+
+    def operator_enter(self, new_prec):
+        old_prec = self.precedence[-1]
+        if old_prec > new_prec:
+            self.put(u"(")
+        self.precedence.append(new_prec)
+
+    def operator_exit(self):
+        old_prec, new_prec = self.precedence[-2:]
+        if old_prec > new_prec:
+            self.put(u")")
+        self.precedence.pop()
+
+    def visit_NotNode(self, node):
+        op = 'not'
+        prec = self.unop_precedence[op]
+        self.operator_enter(prec)
+        self.put(u"not ")
+        self.visit(node.operand)
+        self.operator_exit()
+
+    def visit_UnopNode(self, node):
+        op = node.operator
+        prec = self.unop_precedence[op]
+        self.operator_enter(prec)
+        self.put(u"%s" % node.operator)
+        self.visit(node.operand)
+        self.operator_exit()
+
+    def visit_BinopNode(self, node):
+        op = node.operator
+        prec = self.binop_precedence.get(op, 0)
+        self.operator_enter(prec)
+        self.visit(node.operand1)
+        self.put(u" %s " % op.replace('_', ' '))
+        self.visit(node.operand2)
+        self.operator_exit()
+
+    def visit_BoolBinopNode(self, node):
+        self.visit_BinopNode(node)
+
+    def visit_PrimaryCmpNode(self, node):
+        self.visit_BinopNode(node)
+
+    def visit_IndexNode(self, node):
+        self.visit(node.base)
+        self.put(u"[")
+        if isinstance(node.index, TupleNode):
+            if node.index.subexpr_nodes():
+                self.emit_sequence(node.index)
+            else:
+                self.put(u"()")
+        else:
+            self.visit(node.index)
+        self.put(u"]")
+
+    def visit_SliceIndexNode(self, node):
+        self.visit(node.base)
+        self.put(u"[")
+        if node.start:
+            self.visit(node.start)
+        self.put(u":")
+        if node.stop:
+            self.visit(node.stop)
+        if node.slice:
+            self.put(u":")
+            self.visit(node.slice)
+        self.put(u"]")
+
+    def visit_SliceNode(self, node):
+        if not node.start.is_none:
+            self.visit(node.start)
+        self.put(u":")
+        if not node.stop.is_none:
+            self.visit(node.stop)
+        if not node.step.is_none:
+            self.put(u":")
+            self.visit(node.step)
+
+    def visit_CondExprNode(self, node):
+        self.visit(node.true_val)
+        self.put(u" if ")
+        self.visit(node.test)
+        self.put(u" else ")
+        self.visit(node.false_val)
+
+    def visit_AttributeNode(self, node):
+        self.visit(node.obj)
+        self.put(u".%s" % node.attribute)
+
+    def visit_SimpleCallNode(self, node):
+        self.visit(node.function)
+        self.put(u"(")
+        self.comma_separated_list(node.args)
+        self.put(")")
+
+    def emit_pos_args(self, node):
+        if node is None:
+            return
+        if isinstance(node, AddNode):
+            self.emit_pos_args(node.operand1)
+            self.emit_pos_args(node.operand2)
+        elif isinstance(node, TupleNode):
+            for expr in node.subexpr_nodes():
+                self.visit(expr)
+                self.put(u", ")
+        elif isinstance(node, AsTupleNode):
+            self.put("*")
+            self.visit(node.arg)
+            self.put(u", ")
+        else:
+            self.visit(node)
+            self.put(u", ")
+
+    def emit_kwd_args(self, node):
+        if node is None:
+            return
+        if isinstance(node, MergedDictNode):
+            for expr in node.subexpr_nodes():
+                self.emit_kwd_args(expr)
+        elif isinstance(node, DictNode):
+            for expr in node.subexpr_nodes():
+                self.put(u"%s=" % expr.key.value)
+                self.visit(expr.value)
+                self.put(u", ")
+        else:
+            self.put(u"**")
+            self.visit(node)
+            self.put(u", ")
+
+    def visit_GeneralCallNode(self, node):
+        self.visit(node.function)
+        self.put(u"(")
+        self.emit_pos_args(node.positional_args)
+        self.emit_kwd_args(node.keyword_args)
+        self.remove(u", ")
+        self.put(")")
+
+    def emit_comprehension(self, body, target,
+                           sequence, condition,
+                           parens=(u"", u"")):
+        open_paren, close_paren = parens
+        self.put(open_paren)
+        self.visit(body)
+        self.put(u" for ")
+        self.visit(target)
+        self.put(u" in ")
+        self.visit(sequence)
+        if condition:
+            self.put(u" if ")
+            self.visit(condition)
+        self.put(close_paren)
+
+    def visit_ComprehensionAppendNode(self, node):
+        self.visit(node.expr)
+
+    def visit_DictComprehensionAppendNode(self, node):
+        self.visit(node.key_expr)
+        self.put(u": ")
+        self.visit(node.value_expr)
+
+    def visit_ComprehensionNode(self, node):
+        tpmap = {'list': u"[]", 'dict': u"{}", 'set': u"{}"}
+        parens = tpmap[node.type.py_type_name()]
+        body = node.loop.body
+        target = node.loop.target
+        sequence = node.loop.iterator.sequence
+        condition = None
+        if hasattr(body, 'if_clauses'):
+            # type(body) is Nodes.IfStatNode
+            condition = body.if_clauses[0].condition
+            body = body.if_clauses[0].body
+        self.emit_comprehension(body, target, sequence, condition, parens)
+
+    def visit_GeneratorExpressionNode(self, node):
+        body = node.loop.body
+        target = node.loop.target
+        sequence = node.loop.iterator.sequence
+        condition = None
+        if hasattr(body, 'if_clauses'):
+            # type(body) is Nodes.IfStatNode
+            condition = body.if_clauses[0].condition
+            body = body.if_clauses[0].body.expr.arg
+        elif hasattr(body, 'expr'):
+            # type(body) is Nodes.ExprStatNode
+            body = body.expr.arg
+        self.emit_comprehension(body, target, sequence, condition, u"()")
+
+
+class PxdWriter(DeclarationWriter, ExpressionWriter):
+    """
+    A Cython code writer for everything supported in pxd files.
+    (currently unused)
+    """
+
+    def __call__(self, node):
+        print(u'\n'.join(self.write(node).lines))
+        return node
+
+    def visit_CFuncDefNode(self, node):
+        if node.overridable:
+            self.startline(u'cpdef ')
+        else:
+            self.startline(u'cdef ')
+        if node.modifiers:
+            self.put(' '.join(node.modifiers))
+            self.put(' ')
+        if node.visibility != 'private':
+            self.put(node.visibility)
+            self.put(u' ')
+        if node.api:
+            self.put(u'api ')
+        self.visit(node.declarator)
+
+    def visit_StatNode(self, node):
+        pass
+
+
+class CodeWriter(StatementWriter, ExpressionWriter):
+    """
+    A complete Cython code writer.
+    """

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/AnalysedTreeTransforms.py

@@ -0,0 +1,99 @@
+from __future__ import absolute_import
+
+from .Visitor import ScopeTrackingTransform
+from .Nodes import StatListNode, SingleAssignmentNode, CFuncDefNode, DefNode
+from .ExprNodes import DictNode, DictItemNode, NameNode, UnicodeNode
+from .PyrexTypes import py_object_type
+from .StringEncoding import EncodedString
+from . import Symtab
+
+class AutoTestDictTransform(ScopeTrackingTransform):
+    # Handles autotestdict directive
+
+    excludelist = ['__cinit__', '__dealloc__', '__richcmp__',
+                   '__nonzero__', '__bool__',
+                   '__len__', '__contains__']
+
+    def visit_ModuleNode(self, node):
+        if node.is_pxd:
+            return node
+        self.scope_type = 'module'
+        self.scope_node = node
+
+        if not self.current_directives['autotestdict']:
+            return node
+        self.all_docstrings = self.current_directives['autotestdict.all']
+        self.cdef_docstrings = self.all_docstrings or self.current_directives['autotestdict.cdef']
+
+        assert isinstance(node.body, StatListNode)
+
+        # First see if __test__ is already created
+        if u'__test__' in node.scope.entries:
+            # Do nothing
+            return node
+
+        pos = node.pos
+
+        self.tests = []
+        self.testspos = node.pos
+
+        test_dict_entry = node.scope.declare_var(EncodedString(u'__test__'),
+                                                 py_object_type,
+                                                 pos,
+                                                 visibility='public')
+        create_test_dict_assignment = SingleAssignmentNode(pos,
+            lhs=NameNode(pos, name=EncodedString(u'__test__'),
+                         entry=test_dict_entry),
+            rhs=DictNode(pos, key_value_pairs=self.tests))
+        self.visitchildren(node)
+        node.body.stats.append(create_test_dict_assignment)
+        return node
+
+    def add_test(self, testpos, path, doctest):
+        pos = self.testspos
+        keystr = u'%s (line %d)' % (path, testpos[1])
+        key = UnicodeNode(pos, value=EncodedString(keystr))
+        value = UnicodeNode(pos, value=doctest)
+        self.tests.append(DictItemNode(pos, key=key, value=value))
+
+    def visit_ExprNode(self, node):
+        # expressions cannot contain functions and lambda expressions
+        # do not have a docstring
+        return node
+
+    def visit_FuncDefNode(self, node):
+        if not node.doc or (isinstance(node, DefNode) and node.fused_py_func):
+            return node
+        if not self.cdef_docstrings:
+            if isinstance(node, CFuncDefNode) and not node.py_func:
+                return node
+        if not self.all_docstrings and '>>>' not in node.doc:
+            return node
+
+        pos = self.testspos
+        if self.scope_type == 'module':
+            path = node.entry.name
+        elif self.scope_type in ('pyclass', 'cclass'):
+            if isinstance(node, CFuncDefNode):
+                if node.py_func is not None:
+                    name = node.py_func.name
+                else:
+                    name = node.entry.name
+            else:
+                name = node.name
+            if self.scope_type == 'cclass' and name in self.excludelist:
+                return node
+            if self.scope_type == 'pyclass':
+                class_name = self.scope_node.name
+            else:
+                class_name = self.scope_node.class_name
+            if isinstance(node.entry.scope, Symtab.PropertyScope):
+                property_method_name = node.entry.scope.name
+                path = "%s.%s.%s" % (class_name, node.entry.scope.name,
+                                     node.entry.name)
+            else:
+                path = "%s.%s" % (class_name, node.entry.name)
+        else:
+            assert False
+        self.add_test(node.pos, path, node.doc)
+        return node

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Annotate.py

@@ -0,0 +1,341 @@
+# Note: Work in progress
+
+from __future__ import absolute_import
+
+import os
+import os.path
+import re
+import codecs
+import textwrap
+from datetime import datetime
+from functools import partial
+from collections import defaultdict
+from xml.sax.saxutils import escape as html_escape
+try:
+    from StringIO import StringIO
+except ImportError:
+    from io import StringIO  # does not support writing 'str' in Py2
+
+from . import Version
+from .Code import CCodeWriter
+from .. import Utils
+
+
+class AnnotationCCodeWriter(CCodeWriter):
+
+    # also used as marker for detection of complete code emission in tests
+    COMPLETE_CODE_TITLE = "Complete cythonized code"
+
+    def __init__(self, create_from=None, buffer=None, copy_formatting=True, show_entire_c_code=False, source_desc=None):
+        CCodeWriter.__init__(self, create_from, buffer, copy_formatting=copy_formatting)
+        self.show_entire_c_code = show_entire_c_code
+        if create_from is None:
+            self.annotation_buffer = StringIO()
+            self.last_annotated_pos = None
+            # annotations[filename][line] -> [(column, AnnotationItem)*]
+            self.annotations = defaultdict(partial(defaultdict, list))
+            # code[filename][line] -> str
+            self.code = defaultdict(partial(defaultdict, str))
+            # scopes[filename][line] -> set(scopes)
+            self.scopes = defaultdict(partial(defaultdict, set))
+        else:
+            # When creating an insertion point, keep references to the same database
+            self.annotation_buffer = create_from.annotation_buffer
+            self.annotations = create_from.annotations
+            self.code = create_from.code
+            self.scopes = create_from.scopes
+            self.last_annotated_pos = create_from.last_annotated_pos
+
+    def create_new(self, create_from, buffer, copy_formatting):
+        return AnnotationCCodeWriter(create_from, buffer, copy_formatting)
+
+    def _write_to_buffer(self, s):
+        self.buffer.write(s)
+        self.annotation_buffer.write(s)
+
+    def mark_pos(self, pos, trace=True):
+        if pos is not None:
+            CCodeWriter.mark_pos(self, pos, trace)
+            if self.funcstate and self.funcstate.scope:
+                # lambdas and genexprs can result in multiple scopes per line => keep them in a set
+                self.scopes[pos[0].filename][pos[1]].add(self.funcstate.scope)
+        if self.last_annotated_pos:
+            source_desc, line, _ = self.last_annotated_pos
+            pos_code = self.code[source_desc.filename]
+            pos_code[line] += self.annotation_buffer.getvalue()
+        self.annotation_buffer = StringIO()
+        self.last_annotated_pos = pos
+
+    def annotate(self, pos, item):
+        self.annotations[pos[0].filename][pos[1]].append((pos[2], item))
+
+    def _css(self):
+        """css template will later allow to choose a colormap"""
+        css = [self._css_template]
+        for i in range(255):
+            color = u"FFFF%02x" % int(255.0 // (1.0 + i/10.0))
+            css.append('.cython.score-%d {background-color: #%s;}' % (i, color))
+        try:
+            from pygments.formatters import HtmlFormatter
+        except ImportError:
+            pass
+        else:
+            css.append(HtmlFormatter().get_style_defs('.cython'))
+        return '\n'.join(css)
+
+    _css_template = textwrap.dedent("""
+        body.cython { font-family: courier; font-size: 12; }
+
+        .cython.tag  {  }
+        .cython.line { color: #000000; margin: 0em }
+        .cython.code { font-size: 9; color: #444444; display: none; margin: 0px 0px 0px 8px; border-left: 8px none; }
+
+        .cython.line .run { background-color: #B0FFB0; }
+        .cython.line .mis { background-color: #FFB0B0; }
+        .cython.code.run  { border-left: 8px solid #B0FFB0; }
+        .cython.code.mis  { border-left: 8px solid #FFB0B0; }
+
+        .cython.code .py_c_api  { color: red; }
+        .cython.code .py_macro_api  { color: #FF7000; }
+        .cython.code .pyx_c_api  { color: #FF3000; }
+        .cython.code .pyx_macro_api  { color: #FF7000; }
+        .cython.code .refnanny  { color: #FFA000; }
+        .cython.code .trace  { color: #FFA000; }
+        .cython.code .error_goto  { color: #FFA000; }
+
+        .cython.code .coerce  { color: #008000; border: 1px dotted #008000 }
+        .cython.code .py_attr { color: #FF0000; font-weight: bold; }
+        .cython.code .c_attr  { color: #0000FF; }
+        .cython.code .py_call { color: #FF0000; font-weight: bold; }
+        .cython.code .c_call  { color: #0000FF; }
+    """)
+
+    # on-click toggle function to show/hide C source code
+    _onclick_attr = ' onclick="{0}"'.format((
+        "(function(s){"
+        "    s.display =  s.display === 'block' ? 'none' : 'block'"
+        "})(this.nextElementSibling.style)"
+        ).replace(' ', '')  # poor dev's JS minification
+    )
+
+    def save_annotation(self, source_filename, target_filename, coverage_xml=None):
+        with Utils.open_source_file(source_filename) as f:
+            code = f.read()
+        generated_code = self.code.get(source_filename, {})
+        c_file = Utils.decode_filename(os.path.basename(target_filename))
+        html_filename = os.path.splitext(target_filename)[0] + ".html"
+
+        with codecs.open(html_filename, "w", encoding="UTF-8") as out_buffer:
+            out_buffer.write(self._save_annotation(code, generated_code, c_file, source_filename, coverage_xml))
+
+    def _save_annotation_header(self, c_file, source_filename, coverage_timestamp=None):
+        coverage_info = ''
+        if coverage_timestamp:
+            coverage_info = u' with coverage data from {timestamp}'.format(
+                timestamp=datetime.fromtimestamp(int(coverage_timestamp) // 1000))
+
+        outlist = [
+            textwrap.dedent(u'''\
+            <!DOCTYPE html>
+            <!-- Generated by Cython {watermark} -->
+            <html>
+            <head>
+                <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+                <title>Cython: {filename}</title>
+                <style type="text/css">
+                {css}
+                </style>
+            </head>
+            <body class="cython">
+            <p><span style="border-bottom: solid 1px grey;">Generated by Cython {watermark}</span>{more_info}</p>
+            <p>
+                <span style="background-color: #FFFF00">Yellow lines</span> hint at Python interaction.<br />
+                Click on a line that starts with a "<code>+</code>" to see the C code that Cython generated for it.
+            </p>
+            ''').format(css=self._css(), watermark=Version.watermark,
+                        filename=os.path.basename(source_filename) if source_filename else '',
+                        more_info=coverage_info)
+        ]
+        if c_file:
+            outlist.append(u'<p>Raw output: <a href="%s">%s</a></p>\n' % (c_file, c_file))
+        return outlist
+
+    def _save_annotation_footer(self):
+        return (u'</body></html>\n',)
+
+    def _save_annotation(self, code, generated_code, c_file=None, source_filename=None, coverage_xml=None):
+        """
+        lines : original cython source code split by lines
+        generated_code : generated c code keyed by line number in original file
+        target filename : name of the file in which to store the generated html
+        c_file : filename in which the c_code has been written
+        """
+        if coverage_xml is not None and source_filename:
+            coverage_timestamp = coverage_xml.get('timestamp', '').strip()
+            covered_lines = self._get_line_coverage(coverage_xml, source_filename)
+        else:
+            coverage_timestamp = covered_lines = None
+        annotation_items = dict(self.annotations[source_filename])
+        scopes = dict(self.scopes[source_filename])
+
+        outlist = []
+        outlist.extend(self._save_annotation_header(c_file, source_filename, coverage_timestamp))
+        outlist.extend(self._save_annotation_body(code, generated_code, annotation_items, scopes, covered_lines))
+        outlist.extend(self._save_annotation_footer())
+        return ''.join(outlist)
+
+    def _get_line_coverage(self, coverage_xml, source_filename):
+        coverage_data = None
+        for entry in coverage_xml.iterfind('.//class'):
+            if not entry.get('filename'):
+                continue
+            if (entry.get('filename') == source_filename or
+                    os.path.abspath(entry.get('filename')) == source_filename):
+                coverage_data = entry
+                break
+            elif source_filename.endswith(entry.get('filename')):
+                coverage_data = entry  # but we might still find a better match...
+        if coverage_data is None:
+            return None
+        return dict(
+            (int(line.get('number')), int(line.get('hits')))
+            for line in coverage_data.iterfind('lines/line')
+        )
+
+    def _htmlify_code(self, code, language):
+        try:
+            from pygments import highlight
+            from pygments.lexers import CythonLexer, CppLexer
+            from pygments.formatters import HtmlFormatter
+        except ImportError:
+            # no Pygments, just escape the code
+            return html_escape(code)
+
+        if language == "cython":
+            lexer = CythonLexer(stripnl=False, stripall=False)
+        elif language == "c/cpp":
+            lexer = CppLexer(stripnl=False, stripall=False)
+        else:
+            # unknown language, use fallback
+            return html_escape(code)
+        html_code = highlight(
+            code, lexer,
+            HtmlFormatter(nowrap=True))
+        return html_code
+
+    def _save_annotation_body(self, cython_code, generated_code, annotation_items, scopes, covered_lines=None):
+        outlist = [u'<div class="cython">']
+        pos_comment_marker = u'/* \N{HORIZONTAL ELLIPSIS} */\n'
+        new_calls_map = dict(
+            (name, 0) for name in
+            'refnanny trace py_macro_api py_c_api pyx_macro_api pyx_c_api error_goto'.split()
+        ).copy
+
+        self.mark_pos(None)
+
+        def annotate(match):
+            group_name = match.lastgroup
+            calls[group_name] += 1
+            return u"<span class='%s'>%s</span>" % (
+                group_name, match.group(group_name))
+
+        lines = self._htmlify_code(cython_code, "cython").splitlines()
+        lineno_width = len(str(len(lines)))
+        if not covered_lines:
+            covered_lines = None
+
+        for k, line in enumerate(lines, 1):
+            try:
+                c_code = generated_code[k]
+            except KeyError:
+                c_code = ''
+            else:
+                c_code = _replace_pos_comment(pos_comment_marker, c_code)
+                if c_code.startswith(pos_comment_marker):
+                    c_code = c_code[len(pos_comment_marker):]
+                c_code = html_escape(c_code)
+
+            calls = new_calls_map()
+            c_code = _parse_code(annotate, c_code)
+            score = (5 * calls['py_c_api'] + 2 * calls['pyx_c_api'] +
+                     calls['py_macro_api'] + calls['pyx_macro_api'])
+
+            if c_code:
+                onclick = self._onclick_attr
+                expandsymbol = '+'
+            else:
+                onclick = ''
+                expandsymbol = '&#xA0;'
+
+            covered = ''
+            if covered_lines is not None and k in covered_lines:
+                hits = covered_lines[k]
+                if hits is not None:
+                    covered = 'run' if hits else 'mis'
+
+            outlist.append(
+                u'<pre class="cython line score-{score}"{onclick}>'
+                # generate line number with expand symbol in front,
+                # and the right  number of digit
+                u'{expandsymbol}<span class="{covered}">{line:0{lineno_width}d}</span>: {code}</pre>\n'.format(
+                    score=score,
+                    expandsymbol=expandsymbol,
+                    covered=covered,
+                    lineno_width=lineno_width,
+                    line=k,
+                    code=line.rstrip(),
+                    onclick=onclick,
+                ))
+            if c_code:
+                outlist.append(u"<pre class='cython code score-{score} {covered}'>{code}</pre>".format(
+                    score=score, covered=covered, code=c_code))
+        outlist.append(u"</div>")
+
+        # now the whole c-code if needed:
+        if self.show_entire_c_code:
+            outlist.append(u'<p><div class="cython">')
+            onclick_title = u"<pre class='cython line'{onclick}>+ {title}</pre>\n"
+            outlist.append(onclick_title.format(
+                              onclick=self._onclick_attr,
+                              title=AnnotationCCodeWriter.COMPLETE_CODE_TITLE,
+                           ))
+            complete_code_as_html = self._htmlify_code(self.buffer.getvalue(), "c/cpp")
+            outlist.append(u"<pre class='cython code'>{code}</pre>".format(code=complete_code_as_html))
+            outlist.append(u"</div></p>")
+
+        return outlist
+
+
+_parse_code = re.compile((
+    br'(?P<refnanny>__Pyx_X?(?:GOT|GIVE)REF|__Pyx_RefNanny[A-Za-z]+)|'
+    br'(?P<trace>__Pyx_Trace[A-Za-z]+)|'
+    br'(?:'
+    br'(?P<pyx_macro_api>__Pyx_[A-Z][A-Z_]+)|'
+    br'(?P<pyx_c_api>(?:__Pyx_[A-Z][a-z_][A-Za-z_]*)|__pyx_convert_[A-Za-z_]*)|'
+    br'(?P<py_macro_api>Py[A-Z][a-z]+_[A-Z][A-Z_]+)|'
+    br'(?P<py_c_api>Py[A-Z][a-z]+_[A-Z][a-z][A-Za-z_]*)'
+    br')(?=\()|'       # look-ahead to exclude subsequent '(' from replacement
+    br'(?P<error_goto>(?:(?<=;) *if [^;]* +)?__PYX_ERR\([^)]+\))'
+).decode('ascii')).sub
+
+
+_replace_pos_comment = re.compile(
+    # this matches what Cython generates as code line marker comment
+    br'^\s*/\*(?:(?:[^*]|\*[^/])*\n)+\s*\*/\s*\n'.decode('ascii'),
+    re.M
+).sub
+
+
+class AnnotationItem(object):
+
+    def __init__(self, style, text, tag="", size=0):
+        self.style = style
+        self.text = text
+        self.tag = tag
+        self.size = size
+
+    def start(self):
+        return u"<span class='cython tag %s' title='%s'>%s" % (self.style, self.text, self.tag)
+
+    def end(self):
+        return self.size, u"</span>"

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/AutoDocTransforms.py

@@ -0,0 +1,318 @@
+from __future__ import absolute_import, print_function
+
+from .Visitor import CythonTransform
+from .StringEncoding import EncodedString
+from . import Options
+from . import PyrexTypes
+from ..CodeWriter import ExpressionWriter
+from .Errors import warning
+
+
+class AnnotationWriter(ExpressionWriter):
+    """
+    A Cython code writer for Python expressions in argument/variable annotations.
+    """
+    def __init__(self, description=None):
+        """description is optional. If specified it is used in
+        warning messages for the nodes that don't convert to string properly.
+        If not specified then no messages are generated.
+        """
+        ExpressionWriter.__init__(self)
+        self.description = description
+        self.incomplete = False
+
+    def visit_Node(self, node):
+        self.put(u"<???>")
+        self.incomplete = True
+        if self.description:
+            warning(node.pos,
+                    "Failed to convert code to string representation in {0}".format(
+                        self.description), level=1)
+
+    def visit_LambdaNode(self, node):
+        # XXX Should we do better?
+        self.put("<lambda>")
+        self.incomplete = True
+        if self.description:
+            warning(node.pos,
+                    "Failed to convert lambda to string representation in {0}".format(
+                        self.description), level=1)
+
+    def visit_UnicodeNode(self, node):
+        # Discard Unicode prefix in annotations. Any tool looking at them
+        # would probably expect Py3 string semantics.
+        self.emit_string(node, "")
+
+    def visit_AnnotationNode(self, node):
+        self.put(node.string.unicode_value)
+
+
+class EmbedSignature(CythonTransform):
+
+    def __init__(self, context):
+        super(EmbedSignature, self).__init__(context)
+        self.class_name = None
+        self.class_node = None
+
+    def _fmt_expr(self, node):
+        writer = ExpressionWriter()
+        result = writer.write(node)
+        # print(type(node).__name__, '-->', result)
+        return result
+
+    def _fmt_annotation(self, node):
+        writer = AnnotationWriter()
+        result = writer.write(node)
+        # print(type(node).__name__, '-->', result)
+        return result
+
+    def _setup_format(self):
+        signature_format = self.current_directives['embedsignature.format']
+        self.is_format_c = signature_format == 'c'
+        self.is_format_python = signature_format == 'python'
+        self.is_format_clinic = signature_format == 'clinic'
+
+    def _fmt_arg(self, arg):
+        arg_doc = arg.name
+        annotation = None
+        defaultval = None
+        if arg.is_self_arg:
+            if self.is_format_clinic:
+                arg_doc = '$self'
+        elif arg.is_type_arg:
+            if self.is_format_clinic:
+                arg_doc = '$type'
+        elif self.is_format_c:
+            if arg.type is not PyrexTypes.py_object_type:
+                arg_doc = arg.type.declaration_code(arg.name, for_display=1)
+        elif self.is_format_python:
+            if not arg.annotation:
+                annotation = self._fmt_type(arg.type)
+        if arg.annotation:
+            if not self.is_format_clinic:
+                annotation = self._fmt_annotation(arg.annotation)
+        if arg.default:
+            defaultval = self._fmt_expr(arg.default)
+        if annotation:
+            arg_doc = arg_doc + (': %s' % annotation)
+            if defaultval:
+                arg_doc = arg_doc + (' = %s' % defaultval)
+        elif defaultval:
+            arg_doc = arg_doc + ('=%s' % defaultval)
+        return arg_doc
+
+    def _fmt_star_arg(self, arg):
+        arg_doc = arg.name
+        if arg.annotation:
+            if not self.is_format_clinic:
+                annotation = self._fmt_annotation(arg.annotation)
+                arg_doc = arg_doc + (': %s' % annotation)
+        return arg_doc
+
+    def _fmt_arglist(self, args,
+                     npoargs=0, npargs=0, pargs=None,
+                     nkargs=0, kargs=None,
+                     hide_self=False):
+        arglist = []
+        for arg in args:
+            if not hide_self or not arg.entry.is_self_arg:
+                arg_doc = self._fmt_arg(arg)
+                arglist.append(arg_doc)
+        if pargs:
+            arg_doc = self._fmt_star_arg(pargs)
+            arglist.insert(npargs + npoargs, '*%s' % arg_doc)
+        elif nkargs:
+            arglist.insert(npargs + npoargs, '*')
+        if npoargs:
+            arglist.insert(npoargs, '/')
+        if kargs:
+            arg_doc = self._fmt_star_arg(kargs)
+            arglist.append('**%s' % arg_doc)
+        return arglist
+
+    def _fmt_type(self, type):
+        if type is PyrexTypes.py_object_type:
+            return None
+        elif self.is_format_c:
+            code = type.declaration_code("", for_display=1)
+            return code
+        elif self.is_format_python:
+            annotation = None
+            if type.is_string:
+                annotation = self.current_directives['c_string_type']
+            elif type.is_numeric:
+                annotation = type.py_type_name()
+            if annotation is None:
+                code = type.declaration_code('', for_display=1)
+                annotation = code.replace(' ', '_').replace('*', 'p')
+            return annotation
+        return None
+
+    def _fmt_signature(self, cls_name, func_name, args,
+                       npoargs=0, npargs=0, pargs=None,
+                       nkargs=0, kargs=None,
+                       return_expr=None, return_type=None,
+                       hide_self=False):
+        arglist = self._fmt_arglist(
+            args, npoargs, npargs, pargs, nkargs, kargs,
+            hide_self=hide_self,
+        )
+        arglist_doc = ', '.join(arglist)
+        func_doc = '%s(%s)' % (func_name, arglist_doc)
+        if self.is_format_c and cls_name:
+            func_doc = '%s.%s' % (cls_name, func_doc)
+        if not self.is_format_clinic:
+            ret_doc = None
+            if return_expr:
+                ret_doc = self._fmt_annotation(return_expr)
+            elif return_type:
+                ret_doc = self._fmt_type(return_type)
+            if ret_doc:
+                func_doc = '%s -> %s' % (func_doc, ret_doc)
+        return func_doc
+
+    def _embed_signature(self, signature, node_doc):
+        if self.is_format_clinic and self.current_directives['binding']:
+            return node_doc
+        if node_doc:
+            if self.is_format_clinic:
+                docfmt = "%s\n--\n\n%s"
+            else:
+                docfmt = "%s\n%s"
+            return docfmt % (signature, node_doc)
+        else:
+            if self.is_format_clinic:
+                docfmt = "%s\n--\n\n"
+            else:
+                docfmt = "%s"
+            return docfmt % signature
+
+    def __call__(self, node):
+        if not Options.docstrings:
+            return node
+        else:
+            return super(EmbedSignature, self).__call__(node)
+
+    def visit_ClassDefNode(self, node):
+        oldname = self.class_name
+        oldclass = self.class_node
+        self.class_node = node
+        try:
+            # PyClassDefNode
+            self.class_name = node.name
+        except AttributeError:
+            # CClassDefNode
+            self.class_name = node.class_name
+        self.visitchildren(node)
+        self.class_name = oldname
+        self.class_node = oldclass
+        return node
+
+    def visit_LambdaNode(self, node):
+        # lambda expressions so not have signature or inner functions
+        return node
+
+    def visit_DefNode(self, node):
+        if not self.current_directives['embedsignature']:
+            return node
+        self._setup_format()
+
+        is_constructor = False
+        hide_self = False
+        if node.entry.is_special:
+            is_constructor = self.class_node and node.name == '__init__'
+            if not is_constructor:
+                return node
+            class_name = None
+            func_name = node.name
+            if self.is_format_c:
+                func_name = self.class_name
+                hide_self = True
+        else:
+            class_name, func_name = self.class_name, node.name
+
+        npoargs = getattr(node, 'num_posonly_args', 0)
+        nkargs = getattr(node, 'num_kwonly_args', 0)
+        npargs = len(node.args) - nkargs - npoargs
+        signature = self._fmt_signature(
+            class_name, func_name, node.args,
+            npoargs, npargs, node.star_arg,
+            nkargs, node.starstar_arg,
+            return_expr=node.return_type_annotation,
+            return_type=None, hide_self=hide_self)
+        if signature:
+            if is_constructor and self.is_format_c:
+                doc_holder = self.class_node.entry.type.scope
+            else:
+                doc_holder = node.entry
+            if doc_holder.doc is not None:
+                old_doc = doc_holder.doc
+            elif not is_constructor and getattr(node, 'py_func', None) is not None:
+                old_doc = node.py_func.entry.doc
+            else:
+                old_doc = None
+            new_doc = self._embed_signature(signature, old_doc)
+            doc_holder.doc = EncodedString(new_doc)
+            if not is_constructor and getattr(node, 'py_func', None) is not None:
+                node.py_func.entry.doc = EncodedString(new_doc)
+        return node
+
+    def visit_CFuncDefNode(self, node):
+        if not node.overridable:  # not cpdef FOO(...):
+            return node
+        if not self.current_directives['embedsignature']:
+            return node
+        self._setup_format()
+
+        signature = self._fmt_signature(
+            self.class_name, node.declarator.base.name,
+            node.declarator.args,
+            return_type=node.return_type)
+        if signature:
+            if node.entry.doc is not None:
+                old_doc = node.entry.doc
+            elif getattr(node, 'py_func', None) is not None:
+                old_doc = node.py_func.entry.doc
+            else:
+                old_doc = None
+            new_doc = self._embed_signature(signature, old_doc)
+            node.entry.doc = EncodedString(new_doc)
+            py_func = getattr(node, 'py_func', None)
+            if py_func is not None:
+                py_func.entry.doc = EncodedString(new_doc)
+        return node
+
+    def visit_PropertyNode(self, node):
+        if not self.current_directives['embedsignature']:
+            return node
+        self._setup_format()
+
+        entry = node.entry
+        body = node.body
+        prop_name = entry.name
+        type_name = None
+        if entry.visibility == 'public':
+            if self.is_format_c:
+                # property synthesised from a cdef public attribute
+                type_name = entry.type.declaration_code("", for_display=1)
+                if not entry.type.is_pyobject:
+                    type_name = "'%s'" % type_name
+                elif entry.type.is_extension_type:
+                    type_name = entry.type.module_name + '.' + type_name
+            elif self.is_format_python:
+                type_name = self._fmt_type(entry.type)
+        if type_name is None:
+            for stat in body.stats:
+                if stat.name != '__get__':
+                    continue
+                if self.is_format_c:
+                    prop_name = '%s.%s' % (self.class_name, prop_name)
+                ret_annotation = stat.return_type_annotation
+                if ret_annotation:
+                    type_name = self._fmt_annotation(ret_annotation)
+        if type_name is not None :
+            signature = '%s: %s' % (prop_name, type_name)
+            new_doc = self._embed_signature(signature, entry.doc)
+            if not self.is_format_clinic:
+                entry.doc = EncodedString(new_doc)
+        return node

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Buffer.py

@@ -0,0 +1,749 @@
+from __future__ import absolute_import
+
+from .Visitor import CythonTransform
+from .ModuleNode import ModuleNode
+from .Errors import CompileError
+from .UtilityCode import CythonUtilityCode
+from .Code import UtilityCode, TempitaUtilityCode
+
+from . import Options
+from . import Interpreter
+from . import PyrexTypes
+from . import Naming
+from . import Symtab
+
+def dedent(text, reindent=0):
+    from textwrap import dedent
+    text = dedent(text)
+    if reindent > 0:
+        indent = " " * reindent
+        text = '\n'.join([indent + x for x in text.split('\n')])
+    return text
+
+class IntroduceBufferAuxiliaryVars(CythonTransform):
+
+    #
+    # Entry point
+    #
+
+    buffers_exists = False
+    using_memoryview = False
+
+    def __call__(self, node):
+        assert isinstance(node, ModuleNode)
+        self.max_ndim = 0
+        result = super(IntroduceBufferAuxiliaryVars, self).__call__(node)
+        if self.buffers_exists:
+            use_bufstruct_declare_code(node.scope)
+            use_py2_buffer_functions(node.scope)
+
+        return result
+
+
+    #
+    # Basic operations for transforms
+    #
+    def handle_scope(self, node, scope):
+        # For all buffers, insert extra variables in the scope.
+        # The variables are also accessible from the buffer_info
+        # on the buffer entry
+        scope_items = scope.entries.items()
+        bufvars = [entry for name, entry in scope_items if entry.type.is_buffer]
+        if len(bufvars) > 0:
+            bufvars.sort(key=lambda entry: entry.name)
+            self.buffers_exists = True
+
+        memviewslicevars = [entry for name, entry in scope_items if entry.type.is_memoryviewslice]
+        if len(memviewslicevars) > 0:
+            self.buffers_exists = True
+
+
+        for (name, entry) in scope_items:
+            if name == 'memoryview' and isinstance(entry.utility_code_definition, CythonUtilityCode):
+                self.using_memoryview = True
+                break
+        del scope_items
+
+        if isinstance(node, ModuleNode) and len(bufvars) > 0:
+            # for now...note that pos is wrong
+            raise CompileError(node.pos, "Buffer vars not allowed in module scope")
+        for entry in bufvars:
+            if entry.type.dtype.is_ptr:
+                raise CompileError(node.pos, "Buffers with pointer types not yet supported.")
+
+            name = entry.name
+            buftype = entry.type
+            if buftype.ndim > Options.buffer_max_dims:
+                raise CompileError(node.pos,
+                        "Buffer ndims exceeds Options.buffer_max_dims = %d" % Options.buffer_max_dims)
+            if buftype.ndim > self.max_ndim:
+                self.max_ndim = buftype.ndim
+
+            # Declare auxiliary vars
+            def decvar(type, prefix):
+                cname = scope.mangle(prefix, name)
+                aux_var = scope.declare_var(name=None, cname=cname,
+                                            type=type, pos=node.pos)
+                if entry.is_arg:
+                    aux_var.used = True  # otherwise, NameNode will mark whether it is used
+
+                return aux_var
+
+            auxvars = ((PyrexTypes.c_pyx_buffer_nd_type, Naming.pybuffernd_prefix),
+                       (PyrexTypes.c_pyx_buffer_type, Naming.pybufferstruct_prefix))
+            pybuffernd, rcbuffer = [decvar(type, prefix) for (type, prefix) in auxvars]
+
+            entry.buffer_aux = Symtab.BufferAux(pybuffernd, rcbuffer)
+
+        scope.buffer_entries = bufvars
+        self.scope = scope
+
+    def visit_ModuleNode(self, node):
+        self.handle_scope(node, node.scope)
+        self.visitchildren(node)
+        return node
+
+    def visit_FuncDefNode(self, node):
+        self.handle_scope(node, node.local_scope)
+        self.visitchildren(node)
+        return node
+
+#
+# Analysis
+#
+buffer_options = ("dtype", "ndim", "mode", "negative_indices", "cast")  # ordered!
+buffer_defaults = {"ndim": 1, "mode": "full", "negative_indices": True, "cast": False}
+buffer_positional_options_count = 1  # anything beyond this needs keyword argument
+
+ERR_BUF_OPTION_UNKNOWN = '"%s" is not a buffer option'
+ERR_BUF_TOO_MANY = 'Too many buffer options'
+ERR_BUF_DUP = '"%s" buffer option already supplied'
+ERR_BUF_MISSING = '"%s" missing'
+ERR_BUF_MODE = 'Only allowed buffer modes are: "c", "fortran", "full", "strided" (as a compile-time string)'
+ERR_BUF_NDIM = 'ndim must be a non-negative integer'
+ERR_BUF_DTYPE = 'dtype must be "object", numeric type or a struct'
+ERR_BUF_BOOL = '"%s" must be a boolean'
+
+def analyse_buffer_options(globalpos, env, posargs, dictargs, defaults=None, need_complete=True):
+    """
+    Must be called during type analysis, as analyse is called
+    on the dtype argument.
+
+    posargs and dictargs should consist of a list and a dict
+    of tuples (value, pos). Defaults should be a dict of values.
+
+    Returns a dict containing all the options a buffer can have and
+    its value (with the positions stripped).
+    """
+    if defaults is None:
+        defaults = buffer_defaults
+
+    posargs, dictargs = Interpreter.interpret_compiletime_options(
+        posargs, dictargs, type_env=env, type_args=(0, 'dtype'))
+
+    if len(posargs) > buffer_positional_options_count:
+        raise CompileError(posargs[-1][1], ERR_BUF_TOO_MANY)
+
+    options = {}
+    for name, (value, pos) in dictargs.items():
+        if name not in buffer_options:
+            raise CompileError(pos, ERR_BUF_OPTION_UNKNOWN % name)
+        options[name] = value
+
+    for name, (value, pos) in zip(buffer_options, posargs):
+        if name not in buffer_options:
+            raise CompileError(pos, ERR_BUF_OPTION_UNKNOWN % name)
+        if name in options:
+            raise CompileError(pos, ERR_BUF_DUP % name)
+        options[name] = value
+
+    # Check that they are all there and copy defaults
+    for name in buffer_options:
+        if name not in options:
+            try:
+                options[name] = defaults[name]
+            except KeyError:
+                if need_complete:
+                    raise CompileError(globalpos, ERR_BUF_MISSING % name)
+
+    dtype = options.get("dtype")
+    if dtype and dtype.is_extension_type:
+        raise CompileError(globalpos, ERR_BUF_DTYPE)
+
+    ndim = options.get("ndim")
+    if ndim and (not isinstance(ndim, int) or ndim < 0):
+        raise CompileError(globalpos, ERR_BUF_NDIM)
+
+    mode = options.get("mode")
+    if mode and not (mode in ('full', 'strided', 'c', 'fortran')):
+        raise CompileError(globalpos, ERR_BUF_MODE)
+
+    def assert_bool(name):
+        x = options.get(name)
+        if not isinstance(x, bool):
+            raise CompileError(globalpos, ERR_BUF_BOOL % name)
+
+    assert_bool('negative_indices')
+    assert_bool('cast')
+
+    return options
+
+
+#
+# Code generation
+#
+
+class BufferEntry(object):
+    def __init__(self, entry):
+        self.entry = entry
+        self.type = entry.type
+        self.cname = entry.buffer_aux.buflocal_nd_var.cname
+        self.buf_ptr = "%s.rcbuffer->pybuffer.buf" % self.cname
+        self.buf_ptr_type = entry.type.buffer_ptr_type
+        self.init_attributes()
+
+    def init_attributes(self):
+        self.shape = self.get_buf_shapevars()
+        self.strides = self.get_buf_stridevars()
+        self.suboffsets = self.get_buf_suboffsetvars()
+
+    def get_buf_suboffsetvars(self):
+        return self._for_all_ndim("%s.diminfo[%d].suboffsets")
+
+    def get_buf_stridevars(self):
+        return self._for_all_ndim("%s.diminfo[%d].strides")
+
+    def get_buf_shapevars(self):
+        return self._for_all_ndim("%s.diminfo[%d].shape")
+
+    def _for_all_ndim(self, s):
+        return [s % (self.cname, i) for i in range(self.type.ndim)]
+
+    def generate_buffer_lookup_code(self, code, index_cnames):
+        # Create buffer lookup and return it
+        # This is done via utility macros/inline functions, which vary
+        # according to the access mode used.
+        params = []
+        nd = self.type.ndim
+        mode = self.type.mode
+        if mode == 'full':
+            for i, s, o in zip(index_cnames,
+                               self.get_buf_stridevars(),
+                               self.get_buf_suboffsetvars()):
+                params.append(i)
+                params.append(s)
+                params.append(o)
+            funcname = "__Pyx_BufPtrFull%dd" % nd
+            funcgen = buf_lookup_full_code
+        else:
+            if mode == 'strided':
+                funcname = "__Pyx_BufPtrStrided%dd" % nd
+                funcgen = buf_lookup_strided_code
+            elif mode == 'c':
+                funcname = "__Pyx_BufPtrCContig%dd" % nd
+                funcgen = buf_lookup_c_code
+            elif mode == 'fortran':
+                funcname = "__Pyx_BufPtrFortranContig%dd" % nd
+                funcgen = buf_lookup_fortran_code
+            else:
+                assert False
+            for i, s in zip(index_cnames, self.get_buf_stridevars()):
+                params.append(i)
+                params.append(s)
+
+        # Make sure the utility code is available
+        if funcname not in code.globalstate.utility_codes:
+            code.globalstate.utility_codes.add(funcname)
+            protocode = code.globalstate['utility_code_proto']
+            defcode = code.globalstate['utility_code_def']
+            funcgen(protocode, defcode, name=funcname, nd=nd)
+
+        buf_ptr_type_code = self.buf_ptr_type.empty_declaration_code()
+        ptrcode = "%s(%s, %s, %s)" % (funcname, buf_ptr_type_code, self.buf_ptr,
+                                      ", ".join(params))
+        return ptrcode
+
+
+def get_flags(buffer_aux, buffer_type):
+    flags = 'PyBUF_FORMAT'
+    mode = buffer_type.mode
+    if mode == 'full':
+        flags += '| PyBUF_INDIRECT'
+    elif mode == 'strided':
+        flags += '| PyBUF_STRIDES'
+    elif mode == 'c':
+        flags += '| PyBUF_C_CONTIGUOUS'
+    elif mode == 'fortran':
+        flags += '| PyBUF_F_CONTIGUOUS'
+    else:
+        assert False
+    if buffer_aux.writable_needed: flags += "| PyBUF_WRITABLE"
+    return flags
+
+def used_buffer_aux_vars(entry):
+    buffer_aux = entry.buffer_aux
+    buffer_aux.buflocal_nd_var.used = True
+    buffer_aux.rcbuf_var.used = True
+
+def put_unpack_buffer_aux_into_scope(buf_entry, code):
+    # Generate code to copy the needed struct info into local
+    # variables.
+    buffer_aux, mode = buf_entry.buffer_aux, buf_entry.type.mode
+    pybuffernd_struct = buffer_aux.buflocal_nd_var.cname
+
+    fldnames = ['strides', 'shape']
+    if mode == 'full':
+        fldnames.append('suboffsets')
+
+    ln = []
+    for i in range(buf_entry.type.ndim):
+        for fldname in fldnames:
+            ln.append("%s.diminfo[%d].%s = %s.rcbuffer->pybuffer.%s[%d];" % (
+                pybuffernd_struct, i, fldname,
+                pybuffernd_struct, fldname, i,
+            ))
+    code.putln(' '.join(ln))
+
+def put_init_vars(entry, code):
+    bufaux = entry.buffer_aux
+    pybuffernd_struct = bufaux.buflocal_nd_var.cname
+    pybuffer_struct = bufaux.rcbuf_var.cname
+    # init pybuffer_struct
+    code.putln("%s.pybuffer.buf = NULL;" % pybuffer_struct)
+    code.putln("%s.refcount = 0;" % pybuffer_struct)
+    # init the buffer object
+    # code.put_init_var_to_py_none(entry)
+    # init the pybuffernd_struct
+    code.putln("%s.data = NULL;" % pybuffernd_struct)
+    code.putln("%s.rcbuffer = &%s;" % (pybuffernd_struct, pybuffer_struct))
+
+
+def put_acquire_arg_buffer(entry, code, pos):
+    buffer_aux = entry.buffer_aux
+    getbuffer = get_getbuffer_call(code, entry.cname, buffer_aux, entry.type)
+
+    # Acquire any new buffer
+    code.putln("{")
+    code.putln("__Pyx_BufFmt_StackElem __pyx_stack[%d];" % entry.type.dtype.struct_nesting_depth())
+    code.putln(code.error_goto_if("%s == -1" % getbuffer, pos))
+    code.putln("}")
+    # An exception raised in arg parsing cannot be caught, so no
+    # need to care about the buffer then.
+    put_unpack_buffer_aux_into_scope(entry, code)
+
+
+def put_release_buffer_code(code, entry):
+    code.globalstate.use_utility_code(acquire_utility_code)
+    code.putln("__Pyx_SafeReleaseBuffer(&%s.rcbuffer->pybuffer);" % entry.buffer_aux.buflocal_nd_var.cname)
+
+
+def get_getbuffer_call(code, obj_cname, buffer_aux, buffer_type):
+    ndim = buffer_type.ndim
+    cast = int(buffer_type.cast)
+    flags = get_flags(buffer_aux, buffer_type)
+    pybuffernd_struct = buffer_aux.buflocal_nd_var.cname
+
+    dtype_typeinfo = get_type_information_cname(code, buffer_type.dtype)
+
+    code.globalstate.use_utility_code(acquire_utility_code)
+    return ("__Pyx_GetBufferAndValidate(&%(pybuffernd_struct)s.rcbuffer->pybuffer, "
+            "(PyObject*)%(obj_cname)s, &%(dtype_typeinfo)s, %(flags)s, %(ndim)d, "
+            "%(cast)d, __pyx_stack)" % locals())
+
+
+def put_assign_to_buffer(lhs_cname, rhs_cname, buf_entry,
+                         is_initialized, pos, code):
+    """
+    Generate code for reassigning a buffer variables. This only deals with getting
+    the buffer auxiliary structure and variables set up correctly, the assignment
+    itself and refcounting is the responsibility of the caller.
+
+    However, the assignment operation may throw an exception so that the reassignment
+    never happens.
+
+    Depending on the circumstances there are two possible outcomes:
+    - Old buffer released, new acquired, rhs assigned to lhs
+    - Old buffer released, new acquired which fails, reaqcuire old lhs buffer
+      (which may or may not succeed).
+    """
+
+    buffer_aux, buffer_type = buf_entry.buffer_aux, buf_entry.type
+    pybuffernd_struct = buffer_aux.buflocal_nd_var.cname
+    flags = get_flags(buffer_aux, buffer_type)
+
+    code.putln("{")  # Set up necessary stack for getbuffer
+    code.putln("__Pyx_BufFmt_StackElem __pyx_stack[%d];" % buffer_type.dtype.struct_nesting_depth())
+
+    getbuffer = get_getbuffer_call(code, "%s", buffer_aux, buffer_type)  # fill in object below
+
+    if is_initialized:
+        # Release any existing buffer
+        code.putln('__Pyx_SafeReleaseBuffer(&%s.rcbuffer->pybuffer);' % pybuffernd_struct)
+        # Acquire
+        retcode_cname = code.funcstate.allocate_temp(PyrexTypes.c_int_type, manage_ref=False)
+        code.putln("%s = %s;" % (retcode_cname, getbuffer % rhs_cname))
+        code.putln('if (%s) {' % (code.unlikely("%s < 0" % retcode_cname)))
+        # If acquisition failed, attempt to reacquire the old buffer
+        # before raising the exception. A failure of reacquisition
+        # will cause the reacquisition exception to be reported, one
+        # can consider working around this later.
+        exc_temps = tuple(code.funcstate.allocate_temp(PyrexTypes.py_object_type, manage_ref=False)
+                          for _ in range(3))
+        code.putln('PyErr_Fetch(&%s, &%s, &%s);' % exc_temps)
+        code.putln('if (%s) {' % code.unlikely("%s == -1" % (getbuffer % lhs_cname)))
+        code.putln('Py_XDECREF(%s); Py_XDECREF(%s); Py_XDECREF(%s);' % exc_temps)  # Do not refnanny these!
+        code.globalstate.use_utility_code(raise_buffer_fallback_code)
+        code.putln('__Pyx_RaiseBufferFallbackError();')
+        code.putln('} else {')
+        code.putln('PyErr_Restore(%s, %s, %s);' % exc_temps)
+        code.putln('}')
+        code.putln('%s = %s = %s = 0;' % exc_temps)
+        for t in exc_temps:
+            code.funcstate.release_temp(t)
+        code.putln('}')
+        # Unpack indices
+        put_unpack_buffer_aux_into_scope(buf_entry, code)
+        code.putln(code.error_goto_if_neg(retcode_cname, pos))
+        code.funcstate.release_temp(retcode_cname)
+    else:
+        # Our entry had no previous value, so set to None when acquisition fails.
+        # In this case, auxiliary vars should be set up right in initialization to a zero-buffer,
+        # so it suffices to set the buf field to NULL.
+        code.putln('if (%s) {' % code.unlikely("%s == -1" % (getbuffer % rhs_cname)))
+        code.putln('%s = %s; __Pyx_INCREF(Py_None); %s.rcbuffer->pybuffer.buf = NULL;' %
+                   (lhs_cname,
+                    PyrexTypes.typecast(buffer_type, PyrexTypes.py_object_type, "Py_None"),
+                    pybuffernd_struct))
+        code.putln(code.error_goto(pos))
+        code.put('} else {')
+        # Unpack indices
+        put_unpack_buffer_aux_into_scope(buf_entry, code)
+        code.putln('}')
+
+    code.putln("}")  # Release stack
+
+
+def put_buffer_lookup_code(entry, index_signeds, index_cnames, directives,
+                           pos, code, negative_indices, in_nogil_context):
+    """
+    Generates code to process indices and calculate an offset into
+    a buffer. Returns a C string which gives a pointer which can be
+    read from or written to at will (it is an expression so caller should
+    store it in a temporary if it is used more than once).
+
+    As the bounds checking can have any number of combinations of unsigned
+    arguments, smart optimizations etc. we insert it directly in the function
+    body. The lookup however is delegated to a inline function that is instantiated
+    once per ndim (lookup with suboffsets tend to get quite complicated).
+
+    entry is a BufferEntry
+    """
+    negative_indices = directives['wraparound'] and negative_indices
+
+    if directives['boundscheck']:
+        # Check bounds and fix negative indices.
+        # We allocate a temporary which is initialized to -1, meaning OK (!).
+        # If an error occurs, the temp is set to the index dimension the
+        # error is occurring at.
+        failed_dim_temp = code.funcstate.allocate_temp(PyrexTypes.c_int_type, manage_ref=False)
+        code.putln("%s = -1;" % failed_dim_temp)
+        for dim, (signed, cname, shape) in enumerate(zip(index_signeds, index_cnames, entry.get_buf_shapevars())):
+            if signed != 0:
+                # not unsigned, deal with negative index
+                code.putln("if (%s < 0) {" % cname)
+                if negative_indices:
+                    code.putln("%s += %s;" % (cname, shape))
+                    code.putln("if (%s) %s = %d;" % (
+                        code.unlikely("%s < 0" % cname),
+                        failed_dim_temp, dim))
+                else:
+                    code.putln("%s = %d;" % (failed_dim_temp, dim))
+                code.put("} else ")
+            # check bounds in positive direction
+            if signed != 0:
+                cast = ""
+            else:
+                cast = "(size_t)"
+            code.putln("if (%s) %s = %d;" % (
+                code.unlikely("%s >= %s%s" % (cname, cast, shape)),
+                failed_dim_temp, dim))
+
+        if in_nogil_context:
+            code.globalstate.use_utility_code(raise_indexerror_nogil)
+            func = '__Pyx_RaiseBufferIndexErrorNogil'
+        else:
+            code.globalstate.use_utility_code(raise_indexerror_code)
+            func = '__Pyx_RaiseBufferIndexError'
+
+        code.putln("if (%s) {" % code.unlikely("%s != -1" % failed_dim_temp))
+        code.putln('%s(%s);' % (func, failed_dim_temp))
+        code.putln(code.error_goto(pos))
+        code.putln('}')
+        code.funcstate.release_temp(failed_dim_temp)
+    elif negative_indices:
+        # Only fix negative indices.
+        for signed, cname, shape in zip(index_signeds, index_cnames, entry.get_buf_shapevars()):
+            if signed != 0:
+                code.putln("if (%s < 0) %s += %s;" % (cname, cname, shape))
+
+    return entry.generate_buffer_lookup_code(code, index_cnames)
+
+
+def use_bufstruct_declare_code(env):
+    env.use_utility_code(buffer_struct_declare_code)
+
+
+def buf_lookup_full_code(proto, defin, name, nd):
+    """
+    Generates a buffer lookup function for the right number
+    of dimensions. The function gives back a void* at the right location.
+    """
+    # _i_ndex, _s_tride, sub_o_ffset
+    macroargs = ", ".join(["i%d, s%d, o%d" % (i, i, i) for i in range(nd)])
+    proto.putln("#define %s(type, buf, %s) (type)(%s_imp(buf, %s))" % (name, macroargs, name, macroargs))
+
+    funcargs = ", ".join(["Py_ssize_t i%d, Py_ssize_t s%d, Py_ssize_t o%d" % (i, i, i) for i in range(nd)])
+    proto.putln("static CYTHON_INLINE void* %s_imp(void* buf, %s);" % (name, funcargs))
+    defin.putln(dedent("""
+        static CYTHON_INLINE void* %s_imp(void* buf, %s) {
+          char* ptr = (char*)buf;
+        """) % (name, funcargs) + "".join([dedent("""\
+          ptr += s%d * i%d;
+          if (o%d >= 0) ptr = *((char**)ptr) + o%d;
+        """) % (i, i, i, i) for i in range(nd)]
+        ) + "\nreturn ptr;\n}")
+
+
+def buf_lookup_strided_code(proto, defin, name, nd):
+    """
+    Generates a buffer lookup function for the right number
+    of dimensions. The function gives back a void* at the right location.
+    """
+    # _i_ndex, _s_tride
+    args = ", ".join(["i%d, s%d" % (i, i) for i in range(nd)])
+    offset = " + ".join(["i%d * s%d" % (i, i) for i in range(nd)])
+    proto.putln("#define %s(type, buf, %s) (type)((char*)buf + %s)" % (name, args, offset))
+
+
+def buf_lookup_c_code(proto, defin, name, nd):
+    """
+    Similar to strided lookup, but can assume that the last dimension
+    doesn't need a multiplication as long as.
+    Still we keep the same signature for now.
+    """
+    if nd == 1:
+        proto.putln("#define %s(type, buf, i0, s0) ((type)buf + i0)" % name)
+    else:
+        args = ", ".join(["i%d, s%d" % (i, i) for i in range(nd)])
+        offset = " + ".join(["i%d * s%d" % (i, i) for i in range(nd - 1)])
+        proto.putln("#define %s(type, buf, %s) ((type)((char*)buf + %s) + i%d)" % (name, args, offset, nd - 1))
+
+
+def buf_lookup_fortran_code(proto, defin, name, nd):
+    """
+    Like C lookup, but the first index is optimized instead.
+    """
+    if nd == 1:
+        proto.putln("#define %s(type, buf, i0, s0) ((type)buf + i0)" % name)
+    else:
+        args = ", ".join(["i%d, s%d" % (i, i) for i in range(nd)])
+        offset = " + ".join(["i%d * s%d" % (i, i) for i in range(1, nd)])
+        proto.putln("#define %s(type, buf, %s) ((type)((char*)buf + %s) + i%d)" % (name, args, offset, 0))
+
+
+def use_py2_buffer_functions(env):
+    env.use_utility_code(GetAndReleaseBufferUtilityCode())
+
+
+class GetAndReleaseBufferUtilityCode(object):
+    # Emulation of PyObject_GetBuffer and PyBuffer_Release for Python 2.
+    # For >= 2.6 we do double mode -- use the new buffer interface on objects
+    # which has the right tp_flags set, but emulation otherwise.
+
+    requires = None
+    is_cython_utility = False
+
+    def __init__(self):
+        pass
+
+    def __eq__(self, other):
+        return isinstance(other, GetAndReleaseBufferUtilityCode)
+
+    def __hash__(self):
+        return 24342342
+
+    def get_tree(self, **kwargs): pass
+
+    def put_code(self, output):
+        code = output['utility_code_def']
+        proto_code = output['utility_code_proto']
+        env = output.module_node.scope
+        cython_scope = env.context.cython_scope
+
+        # Search all types for __getbuffer__ overloads
+        types = []
+        visited_scopes = set()
+        def find_buffer_types(scope):
+            if scope in visited_scopes:
+                return
+            visited_scopes.add(scope)
+            for m in scope.cimported_modules:
+                find_buffer_types(m)
+            for e in scope.type_entries:
+                if isinstance(e.utility_code_definition, CythonUtilityCode):
+                    continue
+                t = e.type
+                if t.is_extension_type:
+                    if scope is cython_scope and not e.used:
+                        continue
+                    release = get = None
+                    for x in t.scope.pyfunc_entries:
+                        if x.name == u"__getbuffer__": get = x.func_cname
+                        elif x.name == u"__releasebuffer__": release = x.func_cname
+                    if get:
+                        types.append((t.typeptr_cname, get, release))
+
+        find_buffer_types(env)
+
+        util_code = TempitaUtilityCode.load(
+            "GetAndReleaseBuffer", from_file="Buffer.c",
+            context=dict(types=types))
+
+        proto = util_code.format_code(util_code.proto)
+        impl = util_code.format_code(
+            util_code.inject_string_constants(util_code.impl, output)[1])
+
+        proto_code.putln(proto)
+        code.putln(impl)
+
+
+def mangle_dtype_name(dtype):
+    # Use prefixes to separate user defined types from builtins
+    # (consider "typedef float unsigned_int")
+    if dtype.is_pyobject:
+        return "object"
+    elif dtype.is_ptr:
+        return "ptr"
+    else:
+        if dtype.is_typedef or dtype.is_struct_or_union:
+            prefix = "nn_"
+        else:
+            prefix = ""
+        return prefix + dtype.specialization_name()
+
+def get_type_information_cname(code, dtype, maxdepth=None):
+    """
+    Output the run-time type information (__Pyx_TypeInfo) for given dtype,
+    and return the name of the type info struct.
+
+    Structs with two floats of the same size are encoded as complex numbers.
+    One can separate between complex numbers declared as struct or with native
+    encoding by inspecting to see if the fields field of the type is
+    filled in.
+    """
+    namesuffix = mangle_dtype_name(dtype)
+    name = "__Pyx_TypeInfo_%s" % namesuffix
+    structinfo_name = "__Pyx_StructFields_%s" % namesuffix
+
+    if dtype.is_error: return "<error>"
+
+    # It's critical that walking the type info doesn't use more stack
+    # depth than dtype.struct_nesting_depth() returns, so use an assertion for this
+    if maxdepth is None: maxdepth = dtype.struct_nesting_depth()
+    if maxdepth <= 0:
+        assert False
+
+    if name not in code.globalstate.utility_codes:
+        code.globalstate.utility_codes.add(name)
+        typecode = code.globalstate['typeinfo']
+
+        arraysizes = []
+        if dtype.is_array:
+            while dtype.is_array:
+                arraysizes.append(dtype.size)
+                dtype = dtype.base_type
+
+        complex_possible = dtype.is_struct_or_union and dtype.can_be_complex()
+
+        declcode = dtype.empty_declaration_code()
+        if dtype.is_simple_buffer_dtype():
+            structinfo_name = "NULL"
+        elif dtype.is_struct:
+            struct_scope = dtype.scope
+            if dtype.is_cv_qualified:
+                struct_scope = struct_scope.base_type_scope
+            # Must pre-call all used types in order not to recurse during utility code writing.
+            fields = struct_scope.var_entries
+            assert len(fields) > 0
+            types = [get_type_information_cname(code, f.type, maxdepth - 1)
+                     for f in fields]
+            typecode.putln("static __Pyx_StructField %s[] = {" % structinfo_name, safe=True)
+
+            if dtype.is_cv_qualified:
+                # roughly speaking, remove "const" from struct_type
+                struct_type = dtype.cv_base_type.empty_declaration_code()
+            else:
+                struct_type = dtype.empty_declaration_code()
+
+            for f, typeinfo in zip(fields, types):
+                typecode.putln('  {&%s, "%s", offsetof(%s, %s)},' %
+                               (typeinfo, f.name, struct_type, f.cname), safe=True)
+
+            typecode.putln('  {NULL, NULL, 0}', safe=True)
+            typecode.putln("};", safe=True)
+        else:
+            assert False
+
+        rep = str(dtype)
+
+        flags = "0"
+        is_unsigned = "0"
+        if dtype is PyrexTypes.c_char_type:
+            is_unsigned = "__PYX_IS_UNSIGNED(%s)" % declcode
+            typegroup = "'H'"
+        elif dtype.is_int:
+            is_unsigned = "__PYX_IS_UNSIGNED(%s)" % declcode
+            typegroup = "%s ? 'U' : 'I'" % is_unsigned
+        elif complex_possible or dtype.is_complex:
+            typegroup = "'C'"
+        elif dtype.is_float:
+            typegroup = "'R'"
+        elif dtype.is_struct:
+            typegroup = "'S'"
+            if dtype.packed:
+                flags = "__PYX_BUF_FLAGS_PACKED_STRUCT"
+        elif dtype.is_pyobject:
+            typegroup = "'O'"
+        else:
+            assert False, dtype
+
+        typeinfo = ('static __Pyx_TypeInfo %s = '
+                        '{ "%s", %s, sizeof(%s), { %s }, %s, %s, %s, %s };')
+        tup = (name, rep, structinfo_name, declcode,
+               ', '.join([str(x) for x in arraysizes]) or '0', len(arraysizes),
+               typegroup, is_unsigned, flags)
+        typecode.putln(typeinfo % tup, safe=True)
+
+    return name
+
+def load_buffer_utility(util_code_name, context=None, **kwargs):
+    if context is None:
+        return UtilityCode.load(util_code_name, "Buffer.c", **kwargs)
+    else:
+        return TempitaUtilityCode.load(util_code_name, "Buffer.c", context=context, **kwargs)
+
+context = dict(max_dims=Options.buffer_max_dims)
+buffer_struct_declare_code = load_buffer_utility("BufferStructDeclare", context=context)
+buffer_formats_declare_code = load_buffer_utility("BufferFormatStructs")
+
+# Utility function to set the right exception
+# The caller should immediately goto_error
+raise_indexerror_code = load_buffer_utility("BufferIndexError")
+raise_indexerror_nogil = load_buffer_utility("BufferIndexErrorNogil")
+raise_buffer_fallback_code = load_buffer_utility("BufferFallbackError")
+
+acquire_utility_code = load_buffer_utility("BufferGetAndValidate", context=context)
+buffer_format_check_code = load_buffer_utility("BufferFormatCheck", context=context)
+
+# See utility code BufferFormatFromTypeInfo
+_typeinfo_to_format_code = load_buffer_utility("TypeInfoToFormat")

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Builtin.py

@@ -0,0 +1,644 @@
+#
+#   Builtin Definitions
+#
+
+from __future__ import absolute_import
+
+from .StringEncoding import EncodedString
+from .Symtab import BuiltinScope, StructOrUnionScope, ModuleScope, Entry
+from .Code import UtilityCode, TempitaUtilityCode
+from .TypeSlots import Signature
+from . import PyrexTypes
+
+
+# C-level implementations of builtin types, functions and methods
+
+iter_next_utility_code = UtilityCode.load("IterNext", "ObjectHandling.c")
+getattr_utility_code = UtilityCode.load("GetAttr", "ObjectHandling.c")
+getattr3_utility_code = UtilityCode.load("GetAttr3", "Builtins.c")
+pyexec_utility_code = UtilityCode.load("PyExec", "Builtins.c")
+pyexec_globals_utility_code = UtilityCode.load("PyExecGlobals", "Builtins.c")
+globals_utility_code = UtilityCode.load("Globals", "Builtins.c")
+
+builtin_utility_code = {
+    'StopAsyncIteration': UtilityCode.load_cached("StopAsyncIteration", "Coroutine.c"),
+}
+
+
+# mapping from builtins to their C-level equivalents
+
+class _BuiltinOverride(object):
+    def __init__(self, py_name, args, ret_type, cname, py_equiv="*",
+                 utility_code=None, sig=None, func_type=None,
+                 is_strict_signature=False, builtin_return_type=None,
+                 nogil=None):
+        self.py_name, self.cname, self.py_equiv = py_name, cname, py_equiv
+        self.args, self.ret_type = args, ret_type
+        self.func_type, self.sig = func_type, sig
+        self.builtin_return_type = builtin_return_type
+        self.is_strict_signature = is_strict_signature
+        self.utility_code = utility_code
+        self.nogil = nogil
+
+    def build_func_type(self, sig=None, self_arg=None):
+        if sig is None:
+            sig = Signature(self.args, self.ret_type, nogil=self.nogil)
+            sig.exception_check = False  # not needed for the current builtins
+        func_type = sig.function_type(self_arg)
+        if self.is_strict_signature:
+            func_type.is_strict_signature = True
+        if self.builtin_return_type:
+            func_type.return_type = builtin_types[self.builtin_return_type]
+        return func_type
+
+
+class BuiltinAttribute(object):
+    def __init__(self, py_name, cname=None, field_type=None, field_type_name=None):
+        self.py_name = py_name
+        self.cname = cname or py_name
+        self.field_type_name = field_type_name  # can't do the lookup before the type is declared!
+        self.field_type = field_type
+
+    def declare_in_type(self, self_type):
+        if self.field_type_name is not None:
+            # lazy type lookup
+            field_type = builtin_scope.lookup(self.field_type_name).type
+        else:
+            field_type = self.field_type or PyrexTypes.py_object_type
+        entry = self_type.scope.declare(self.py_name, self.cname, field_type, None, 'private')
+        entry.is_variable = True
+
+
+class BuiltinFunction(_BuiltinOverride):
+    def declare_in_scope(self, scope):
+        func_type, sig = self.func_type, self.sig
+        if func_type is None:
+            func_type = self.build_func_type(sig)
+        scope.declare_builtin_cfunction(self.py_name, func_type, self.cname,
+                                        self.py_equiv, self.utility_code)
+
+
+class BuiltinMethod(_BuiltinOverride):
+    def declare_in_type(self, self_type):
+        method_type, sig = self.func_type, self.sig
+        if method_type is None:
+            # override 'self' type (first argument)
+            self_arg = PyrexTypes.CFuncTypeArg("", self_type, None)
+            self_arg.not_none = True
+            self_arg.accept_builtin_subtypes = True
+            method_type = self.build_func_type(sig, self_arg)
+        self_type.scope.declare_builtin_cfunction(
+            self.py_name, method_type, self.cname, utility_code=self.utility_code)
+
+
+class BuiltinProperty(object):
+    # read only for now
+    def __init__(self, py_name, property_type, call_cname,
+                 exception_value=None, exception_check=None, utility_code=None):
+        self.py_name = py_name
+        self.property_type = property_type
+        self.call_cname = call_cname
+        self.utility_code = utility_code
+        self.exception_value = exception_value
+        self.exception_check = exception_check
+
+    def declare_in_type(self, self_type):
+        self_type.scope.declare_cproperty(
+            self.py_name,
+            self.property_type,
+            self.call_cname,
+            exception_value=self.exception_value,
+            exception_check=self.exception_check,
+            utility_code=self.utility_code
+        )
+
+
+builtin_function_table = [
+    # name,        args,   return,  C API func,           py equiv = "*"
+    BuiltinFunction('abs',        "d",    "d",     "fabs",
+                    is_strict_signature=True, nogil=True),
+    BuiltinFunction('abs',        "f",    "f",     "fabsf",
+                    is_strict_signature=True, nogil=True),
+    BuiltinFunction('abs',        "i",    "i",     "abs",
+                    is_strict_signature=True, nogil=True),
+    BuiltinFunction('abs',        "l",    "l",     "labs",
+                    is_strict_signature=True, nogil=True),
+    BuiltinFunction('abs',        None,    None,   "__Pyx_abs_longlong",
+                utility_code = UtilityCode.load("abs_longlong", "Builtins.c"),
+                func_type = PyrexTypes.CFuncType(
+                    PyrexTypes.c_longlong_type, [
+                        PyrexTypes.CFuncTypeArg("arg", PyrexTypes.c_longlong_type, None)
+                        ],
+                    is_strict_signature = True, nogil=True)),
+    ] + list(
+        BuiltinFunction('abs',        None,    None,   "/*abs_{0}*/".format(t.specialization_name()),
+                    func_type = PyrexTypes.CFuncType(
+                        t,
+                        [PyrexTypes.CFuncTypeArg("arg", t, None)],
+                        is_strict_signature = True, nogil=True))
+                            for t in (PyrexTypes.c_uint_type, PyrexTypes.c_ulong_type, PyrexTypes.c_ulonglong_type)
+             ) + list(
+        BuiltinFunction('abs',        None,    None,   "__Pyx_c_abs{0}".format(t.funcsuffix),
+                    func_type = PyrexTypes.CFuncType(
+                        t.real_type, [
+                            PyrexTypes.CFuncTypeArg("arg", t, None)
+                            ],
+                            is_strict_signature = True, nogil=True))
+                        for t in (PyrexTypes.c_float_complex_type,
+                                  PyrexTypes.c_double_complex_type,
+                                  PyrexTypes.c_longdouble_complex_type)
+                        ) + [
+    BuiltinFunction('abs',        "O",    "O",     "__Pyx_PyNumber_Absolute",
+                    utility_code=UtilityCode.load("py_abs", "Builtins.c")),
+    #('all',       "",     "",      ""),
+    #('any',       "",     "",      ""),
+    #('ascii',     "",     "",      ""),
+    #('bin',       "",     "",      ""),
+    BuiltinFunction('callable',   "O",    "b",     "__Pyx_PyCallable_Check",
+                    utility_code = UtilityCode.load("CallableCheck", "ObjectHandling.c")),
+    #('chr',       "",     "",      ""),
+    #('cmp', "",   "",     "",      ""), # int PyObject_Cmp(PyObject *o1, PyObject *o2, int *result)
+    #('compile',   "",     "",      ""), # PyObject* Py_CompileString(    char *str, char *filename, int start)
+    BuiltinFunction('delattr',    "OO",   "r",     "PyObject_DelAttr"),
+    BuiltinFunction('dir',        "O",    "O",     "PyObject_Dir"),
+    BuiltinFunction('divmod',     "OO",   "O",     "PyNumber_Divmod"),
+    BuiltinFunction('exec',       "O",    "O",     "__Pyx_PyExecGlobals",
+                    utility_code = pyexec_globals_utility_code),
+    BuiltinFunction('exec',       "OO",   "O",     "__Pyx_PyExec2",
+                    utility_code = pyexec_utility_code),
+    BuiltinFunction('exec',       "OOO",  "O",     "__Pyx_PyExec3",
+                    utility_code = pyexec_utility_code),
+    #('eval',      "",     "",      ""),
+    #('execfile',  "",     "",      ""),
+    #('filter',    "",     "",      ""),
+    BuiltinFunction('getattr3',   "OOO",  "O",     "__Pyx_GetAttr3",     "getattr",
+                    utility_code=getattr3_utility_code),  # Pyrex legacy
+    BuiltinFunction('getattr',    "OOO",  "O",     "__Pyx_GetAttr3",
+                    utility_code=getattr3_utility_code),
+    BuiltinFunction('getattr',    "OO",   "O",     "__Pyx_GetAttr",
+                    utility_code=getattr_utility_code),
+    BuiltinFunction('hasattr',    "OO",   "b",     "__Pyx_HasAttr",
+                    utility_code = UtilityCode.load("HasAttr", "Builtins.c")),
+    BuiltinFunction('hash',       "O",    "h",     "PyObject_Hash"),
+    #('hex',       "",     "",      ""),
+    #('id',        "",     "",      ""),
+    #('input',     "",     "",      ""),
+    BuiltinFunction('intern',     "O",    "O",     "__Pyx_Intern",
+                    utility_code = UtilityCode.load("Intern", "Builtins.c")),
+    BuiltinFunction('isinstance', "OO",   "b",     "PyObject_IsInstance"),
+    BuiltinFunction('issubclass', "OO",   "b",     "PyObject_IsSubclass"),
+    BuiltinFunction('iter',       "OO",   "O",     "PyCallIter_New"),
+    BuiltinFunction('iter',       "O",    "O",     "PyObject_GetIter"),
+    BuiltinFunction('len',        "O",    "z",     "PyObject_Length"),
+    BuiltinFunction('locals',     "",     "O",     "__pyx_locals"),
+    #('map',       "",     "",      ""),
+    #('max',       "",     "",      ""),
+    #('min',       "",     "",      ""),
+    BuiltinFunction('next',       "O",    "O",     "__Pyx_PyIter_Next",
+                    utility_code = iter_next_utility_code),   # not available in Py2 => implemented here
+    BuiltinFunction('next',      "OO",    "O",     "__Pyx_PyIter_Next2",
+                    utility_code = iter_next_utility_code),  # not available in Py2 => implemented here
+    #('oct',       "",     "",      ""),
+    #('open',       "ss",   "O",     "PyFile_FromString"),   # not in Py3
+] + [
+    BuiltinFunction('ord',        None,    None,   "__Pyx_long_cast",
+                    func_type=PyrexTypes.CFuncType(
+                        PyrexTypes.c_long_type, [PyrexTypes.CFuncTypeArg("c", c_type, None)],
+                        is_strict_signature=True))
+    for c_type in [PyrexTypes.c_py_ucs4_type, PyrexTypes.c_py_unicode_type]
+] + [
+    BuiltinFunction('ord',        None,    None,   "__Pyx_uchar_cast",
+                    func_type=PyrexTypes.CFuncType(
+                        PyrexTypes.c_uchar_type, [PyrexTypes.CFuncTypeArg("c", c_type, None)],
+                        is_strict_signature=True))
+    for c_type in [PyrexTypes.c_char_type, PyrexTypes.c_schar_type, PyrexTypes.c_uchar_type]
+] + [
+    BuiltinFunction('ord',        None,    None,   "__Pyx_PyObject_Ord",
+                    utility_code=UtilityCode.load_cached("object_ord", "Builtins.c"),
+                    func_type=PyrexTypes.CFuncType(
+                        PyrexTypes.c_long_type, [
+                            PyrexTypes.CFuncTypeArg("c", PyrexTypes.py_object_type, None)
+                        ],
+                        exception_value="(long)(Py_UCS4)-1")),
+    BuiltinFunction('pow',        "OOO",  "O",     "PyNumber_Power"),
+    BuiltinFunction('pow',        "OO",   "O",     "__Pyx_PyNumber_Power2",
+                    utility_code = UtilityCode.load("pow2", "Builtins.c")),
+    #('range',     "",     "",      ""),
+    #('raw_input', "",     "",      ""),
+    #('reduce',    "",     "",      ""),
+    BuiltinFunction('reload',     "O",    "O",     "PyImport_ReloadModule"),
+    BuiltinFunction('repr',       "O",    "O",     "PyObject_Repr"),  # , builtin_return_type='str'),  # add in Cython 3.1
+    #('round',     "",     "",      ""),
+    BuiltinFunction('setattr',    "OOO",  "r",     "PyObject_SetAttr"),
+    #('sum',       "",     "",      ""),
+    #('sorted',    "",     "",      ""),
+    #('type',       "O",    "O",     "PyObject_Type"),
+    BuiltinFunction('unichr',     "i",    "O",      "PyUnicode_FromOrdinal", builtin_return_type='unicode'),
+    #('unicode',   "",     "",      ""),
+    #('vars',      "",     "",      ""),
+    #('zip',       "",     "",      ""),
+    #  Can't do these easily until we have builtin type entries.
+    #('typecheck',  "OO",   "i",     "PyObject_TypeCheck", False),
+    #('issubtype',  "OO",   "i",     "PyType_IsSubtype",   False),
+
+    # Put in namespace append optimization.
+    BuiltinFunction('__Pyx_PyObject_Append', "OO",  "O",     "__Pyx_PyObject_Append"),
+
+    # This is conditionally looked up based on a compiler directive.
+    BuiltinFunction('__Pyx_Globals',    "",     "O",     "__Pyx_Globals",
+                    utility_code=globals_utility_code),
+]
+
+
+# Builtin types
+#  bool
+#  buffer
+#  classmethod
+#  dict
+#  enumerate
+#  file
+#  float
+#  int
+#  list
+#  long
+#  object
+#  property
+#  slice
+#  staticmethod
+#  super
+#  str
+#  tuple
+#  type
+#  xrange
+
+builtin_types_table = [
+
+    ("type",    "PyType_Type",     []),
+
+# This conflicts with the C++ bool type, and unfortunately
+# C++ is too liberal about PyObject* <-> bool conversions,
+# resulting in unintuitive runtime behavior and segfaults.
+#    ("bool",    "PyBool_Type",     []),
+
+    ("int",     "PyInt_Type",      []),
+    ("long",    "PyLong_Type",     []),
+    ("float",   "PyFloat_Type",    []),
+
+    ("complex", "PyComplex_Type",  [BuiltinAttribute('cval', field_type_name = 'Py_complex'),
+                                    BuiltinAttribute('real', 'cval.real', field_type = PyrexTypes.c_double_type),
+                                    BuiltinAttribute('imag', 'cval.imag', field_type = PyrexTypes.c_double_type),
+                                    ]),
+
+    ("basestring", "PyBaseString_Type", [
+                                    BuiltinMethod("join",  "TO",   "T", "__Pyx_PyBaseString_Join",
+                                                  utility_code=UtilityCode.load("StringJoin", "StringTools.c")),
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+    ("bytearray", "PyByteArray_Type", [
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+    ("bytes",   "PyBytes_Type",    [BuiltinMethod("join",  "TO",   "O", "__Pyx_PyBytes_Join",
+                                                  utility_code=UtilityCode.load("StringJoin", "StringTools.c")),
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+    ("str",     "PyString_Type",   [BuiltinMethod("join",  "TO",   "O", "__Pyx_PyString_Join",
+                                                  builtin_return_type='basestring',
+                                                  utility_code=UtilityCode.load("StringJoin", "StringTools.c")),
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+    ("unicode", "PyUnicode_Type",  [BuiltinMethod("__contains__",  "TO",   "b", "PyUnicode_Contains"),
+                                    BuiltinMethod("join",  "TO",   "T", "PyUnicode_Join"),
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+
+    ("tuple",   "PyTuple_Type",    [BuiltinMethod("__mul__", "Tz", "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+
+    ("list",    "PyList_Type",     [BuiltinMethod("insert",  "TzO",  "r", "PyList_Insert"),
+                                    BuiltinMethod("reverse", "T",    "r", "PyList_Reverse"),
+                                    BuiltinMethod("append",  "TO",   "r", "__Pyx_PyList_Append",
+                                                  utility_code=UtilityCode.load("ListAppend", "Optimize.c")),
+                                    BuiltinMethod("extend",  "TO",   "r", "__Pyx_PyList_Extend",
+                                                  utility_code=UtilityCode.load("ListExtend", "Optimize.c")),
+                                    BuiltinMethod("__mul__",  "Tz",   "T", "__Pyx_PySequence_Multiply",
+                                                  utility_code=UtilityCode.load("PySequenceMultiply", "ObjectHandling.c")),
+                                    ]),
+
+    ("dict",    "PyDict_Type",     [BuiltinMethod("__contains__",  "TO",   "b", "PyDict_Contains"),
+                                    BuiltinMethod("has_key",       "TO",   "b", "PyDict_Contains"),
+                                    BuiltinMethod("items",  "T",   "O", "__Pyx_PyDict_Items",
+                                                  utility_code=UtilityCode.load("py_dict_items", "Builtins.c")),
+                                    BuiltinMethod("keys",   "T",   "O", "__Pyx_PyDict_Keys",
+                                                  utility_code=UtilityCode.load("py_dict_keys", "Builtins.c")),
+                                    BuiltinMethod("values", "T",   "O", "__Pyx_PyDict_Values",
+                                                  utility_code=UtilityCode.load("py_dict_values", "Builtins.c")),
+                                    BuiltinMethod("iteritems",  "T",   "O", "__Pyx_PyDict_IterItems",
+                                                  utility_code=UtilityCode.load("py_dict_iteritems", "Builtins.c")),
+                                    BuiltinMethod("iterkeys",   "T",   "O", "__Pyx_PyDict_IterKeys",
+                                                  utility_code=UtilityCode.load("py_dict_iterkeys", "Builtins.c")),
+                                    BuiltinMethod("itervalues", "T",   "O", "__Pyx_PyDict_IterValues",
+                                                  utility_code=UtilityCode.load("py_dict_itervalues", "Builtins.c")),
+                                    BuiltinMethod("viewitems",  "T",   "O", "__Pyx_PyDict_ViewItems",
+                                                  utility_code=UtilityCode.load("py_dict_viewitems", "Builtins.c")),
+                                    BuiltinMethod("viewkeys",   "T",   "O", "__Pyx_PyDict_ViewKeys",
+                                                  utility_code=UtilityCode.load("py_dict_viewkeys", "Builtins.c")),
+                                    BuiltinMethod("viewvalues", "T",   "O", "__Pyx_PyDict_ViewValues",
+                                                  utility_code=UtilityCode.load("py_dict_viewvalues", "Builtins.c")),
+                                    BuiltinMethod("clear",  "T",   "r", "__Pyx_PyDict_Clear",
+                                                  utility_code=UtilityCode.load("py_dict_clear", "Optimize.c")),
+                                    BuiltinMethod("copy",   "T",   "T", "PyDict_Copy")]),
+
+    ("slice",   "PySlice_Type",    [BuiltinAttribute('start'),
+                                    BuiltinAttribute('stop'),
+                                    BuiltinAttribute('step'),
+                                    ]),
+#    ("file",    "PyFile_Type",     []),  # not in Py3
+
+    ("set",       "PySet_Type",    [BuiltinMethod("clear",   "T",  "r", "PySet_Clear"),
+                                    # discard() and remove() have a special treatment for unhashable values
+                                    BuiltinMethod("discard", "TO", "r", "__Pyx_PySet_Discard",
+                                                  utility_code=UtilityCode.load("py_set_discard", "Optimize.c")),
+                                    BuiltinMethod("remove",  "TO", "r", "__Pyx_PySet_Remove",
+                                                  utility_code=UtilityCode.load("py_set_remove", "Optimize.c")),
+                                    # update is actually variadic (see Github issue #1645)
+#                                    BuiltinMethod("update",     "TO", "r", "__Pyx_PySet_Update",
+#                                                  utility_code=UtilityCode.load_cached("PySet_Update", "Builtins.c")),
+                                    BuiltinMethod("add",     "TO", "r", "PySet_Add"),
+                                    BuiltinMethod("pop",     "T",  "O", "PySet_Pop")]),
+    ("frozenset", "PyFrozenSet_Type", []),
+    ("Exception", "((PyTypeObject*)PyExc_Exception)[0]", []),
+    ("StopAsyncIteration", "((PyTypeObject*)__Pyx_PyExc_StopAsyncIteration)[0]", []),
+    ("memoryview", "PyMemoryView_Type", [
+        # TODO - format would be nice, but hard to get
+        # __len__ can be accessed through a direct lookup of the buffer (but probably in Optimize.c)
+        # error checking would ideally be limited api only
+        BuiltinProperty("ndim", PyrexTypes.c_int_type, '__Pyx_PyMemoryView_Get_ndim',
+                        exception_value="-1", exception_check=True,
+                        utility_code=TempitaUtilityCode.load_cached(
+                            "memoryview_get_from_buffer", "Builtins.c",
+                            context=dict(name="ndim")
+                        )
+        ),
+        BuiltinProperty("readonly", PyrexTypes.c_bint_type, '__Pyx_PyMemoryView_Get_readonly',
+                        exception_value="-1", exception_check=True,
+                        utility_code=TempitaUtilityCode.load_cached(
+                            "memoryview_get_from_buffer", "Builtins.c",
+                            context=dict(name="readonly")
+                        )
+        ),
+        BuiltinProperty("itemsize", PyrexTypes.c_py_ssize_t_type, '__Pyx_PyMemoryView_Get_itemsize',
+                        exception_value="-1", exception_check=True,
+                        utility_code=TempitaUtilityCode.load_cached(
+                            "memoryview_get_from_buffer", "Builtins.c",
+                            context=dict(name="itemsize")
+                        )
+        )]
+    )
+]
+
+
+types_that_construct_their_instance = frozenset({
+    # some builtin types do not always return an instance of
+    # themselves - these do:
+    'type', 'bool', 'long', 'float', 'complex',
+    'bytes', 'unicode', 'bytearray',
+    'tuple', 'list', 'dict', 'set', 'frozenset',
+    # 'str',             # only in Py3.x
+    # 'file',            # only in Py2.x
+    'memoryview'
+})
+
+
+builtin_structs_table = [
+    ('Py_buffer', 'Py_buffer',
+     [("buf",        PyrexTypes.c_void_ptr_type),
+      ("obj",        PyrexTypes.py_object_type),
+      ("len",        PyrexTypes.c_py_ssize_t_type),
+      ("itemsize",   PyrexTypes.c_py_ssize_t_type),
+      ("readonly",   PyrexTypes.c_bint_type),
+      ("ndim",       PyrexTypes.c_int_type),
+      ("format",     PyrexTypes.c_char_ptr_type),
+      ("shape",      PyrexTypes.c_py_ssize_t_ptr_type),
+      ("strides",    PyrexTypes.c_py_ssize_t_ptr_type),
+      ("suboffsets", PyrexTypes.c_py_ssize_t_ptr_type),
+      ("smalltable", PyrexTypes.CArrayType(PyrexTypes.c_py_ssize_t_type, 2)),
+      ("internal",   PyrexTypes.c_void_ptr_type),
+      ]),
+    ('Py_complex', 'Py_complex',
+     [('real', PyrexTypes.c_double_type),
+      ('imag', PyrexTypes.c_double_type),
+      ])
+]
+
+# set up builtin scope
+
+builtin_scope = BuiltinScope()
+
+def init_builtin_funcs():
+    for bf in builtin_function_table:
+        bf.declare_in_scope(builtin_scope)
+
+builtin_types = {}
+
+def init_builtin_types():
+    global builtin_types
+    for name, cname, methods in builtin_types_table:
+        utility = builtin_utility_code.get(name)
+        if name == 'frozenset':
+            objstruct_cname = 'PySetObject'
+        elif name == 'bytearray':
+            objstruct_cname = 'PyByteArrayObject'
+        elif name == 'bool':
+            objstruct_cname = None
+        elif name == 'Exception':
+            objstruct_cname = "PyBaseExceptionObject"
+        elif name == 'StopAsyncIteration':
+            objstruct_cname = "PyBaseExceptionObject"
+        else:
+            objstruct_cname = 'Py%sObject' % name.capitalize()
+        type_class = PyrexTypes.BuiltinObjectType
+        if name in ['dict', 'list', 'set', 'frozenset']:
+            type_class = PyrexTypes.BuiltinTypeConstructorObjectType
+        elif name == 'tuple':
+            type_class = PyrexTypes.PythonTupleTypeConstructor
+        the_type = builtin_scope.declare_builtin_type(name, cname, utility, objstruct_cname,
+                                                      type_class=type_class)
+        builtin_types[name] = the_type
+        for method in methods:
+            method.declare_in_type(the_type)
+
+def init_builtin_structs():
+    for name, cname, attribute_types in builtin_structs_table:
+        scope = StructOrUnionScope(name)
+        for attribute_name, attribute_type in attribute_types:
+            scope.declare_var(attribute_name, attribute_type, None,
+                              attribute_name, allow_pyobject=True)
+        builtin_scope.declare_struct_or_union(
+            name, "struct", scope, 1, None, cname = cname)
+
+
+def init_builtins():
+    #Errors.init_thread()  # hopefully not needed - we should not emit warnings ourselves
+    init_builtin_structs()
+    init_builtin_types()
+    init_builtin_funcs()
+
+    entry = builtin_scope.declare_var(
+        '__debug__', PyrexTypes.c_const_type(PyrexTypes.c_bint_type),
+        pos=None, cname='__pyx_assertions_enabled()', is_cdef=True)
+    entry.utility_code = UtilityCode.load_cached("AssertionsEnabled", "Exceptions.c")
+
+    global type_type, list_type, tuple_type, dict_type, set_type, frozenset_type, slice_type
+    global bytes_type, str_type, unicode_type, basestring_type, bytearray_type
+    global float_type, int_type, long_type, bool_type, complex_type
+    global memoryview_type, py_buffer_type
+    global sequence_types
+    type_type  = builtin_scope.lookup('type').type
+    list_type  = builtin_scope.lookup('list').type
+    tuple_type = builtin_scope.lookup('tuple').type
+    dict_type  = builtin_scope.lookup('dict').type
+    set_type   = builtin_scope.lookup('set').type
+    frozenset_type = builtin_scope.lookup('frozenset').type
+    slice_type   = builtin_scope.lookup('slice').type
+
+    bytes_type = builtin_scope.lookup('bytes').type
+    str_type   = builtin_scope.lookup('str').type
+    unicode_type = builtin_scope.lookup('unicode').type
+    basestring_type = builtin_scope.lookup('basestring').type
+    bytearray_type = builtin_scope.lookup('bytearray').type
+    memoryview_type = builtin_scope.lookup('memoryview').type
+
+    float_type = builtin_scope.lookup('float').type
+    int_type = builtin_scope.lookup('int').type
+    long_type = builtin_scope.lookup('long').type
+    bool_type  = builtin_scope.lookup('bool').type
+    complex_type  = builtin_scope.lookup('complex').type
+
+    sequence_types = (
+        list_type,
+        tuple_type,
+        bytes_type,
+        str_type,
+        unicode_type,
+        basestring_type,
+        bytearray_type,
+        memoryview_type,
+    )
+
+    # Set up type inference links between equivalent Python/C types
+    bool_type.equivalent_type = PyrexTypes.c_bint_type
+    PyrexTypes.c_bint_type.equivalent_type = bool_type
+
+    float_type.equivalent_type = PyrexTypes.c_double_type
+    PyrexTypes.c_double_type.equivalent_type = float_type
+
+    complex_type.equivalent_type = PyrexTypes.c_double_complex_type
+    PyrexTypes.c_double_complex_type.equivalent_type = complex_type
+
+    py_buffer_type = builtin_scope.lookup('Py_buffer').type
+
+
+init_builtins()
+
+##############################
+# Support for a few standard library modules that Cython understands (currently typing and dataclasses)
+##############################
+_known_module_scopes = {}
+
+def get_known_standard_library_module_scope(module_name):
+    mod = _known_module_scopes.get(module_name)
+    if mod:
+        return mod
+
+    if module_name == "typing":
+        mod = ModuleScope(module_name, None, None)
+        for name, tp in [
+                ('Dict', dict_type),
+                ('List', list_type),
+                ('Tuple', tuple_type),
+                ('Set', set_type),
+                ('FrozenSet', frozenset_type),
+                ]:
+            name = EncodedString(name)
+            entry = mod.declare_type(name, tp, pos = None)
+            var_entry = Entry(name, None, PyrexTypes.py_object_type)
+            var_entry.is_pyglobal = True
+            var_entry.is_variable = True
+            var_entry.scope = mod
+            entry.as_variable = var_entry
+            entry.known_standard_library_import = "%s.%s" % (module_name, name)
+
+        for name in ['ClassVar', 'Optional']:
+            name = EncodedString(name)
+            indexed_type = PyrexTypes.SpecialPythonTypeConstructor(EncodedString("typing."+name))
+            entry = mod.declare_type(name, indexed_type, pos = None)
+            var_entry = Entry(name, None, PyrexTypes.py_object_type)
+            var_entry.is_pyglobal = True
+            var_entry.is_variable = True
+            var_entry.scope = mod
+            entry.as_variable = var_entry
+            entry.known_standard_library_import = "%s.%s" % (module_name, name)
+        _known_module_scopes[module_name] = mod
+    elif module_name == "dataclasses":
+        mod = ModuleScope(module_name, None, None)
+        indexed_type = PyrexTypes.SpecialPythonTypeConstructor(EncodedString("dataclasses.InitVar"))
+        initvar_string = EncodedString("InitVar")
+        entry = mod.declare_type(initvar_string, indexed_type, pos = None)
+        var_entry = Entry(initvar_string, None, PyrexTypes.py_object_type)
+        var_entry.is_pyglobal = True
+        var_entry.scope = mod
+        entry.as_variable = var_entry
+        entry.known_standard_library_import = "%s.InitVar" % module_name
+        for name in ["dataclass", "field"]:
+            mod.declare_var(EncodedString(name), PyrexTypes.py_object_type, pos=None)
+        _known_module_scopes[module_name] = mod
+    elif module_name == "functools":
+        mod = ModuleScope(module_name, None, None)
+        for name in ["total_ordering"]:
+            mod.declare_var(EncodedString(name), PyrexTypes.py_object_type, pos=None)
+        _known_module_scopes[module_name] = mod
+
+    return mod
+
+
+def get_known_standard_library_entry(qualified_name):
+    name_parts = qualified_name.split(".")
+    module_name = EncodedString(name_parts[0])
+    rest = name_parts[1:]
+
+    if len(rest) > 1:  # for now, we don't know how to deal with any nested modules
+        return None
+
+    mod = get_known_standard_library_module_scope(module_name)
+
+    # eventually handle more sophisticated multiple lookups if needed
+    if mod and rest:
+        return mod.lookup_here(rest[0])
+    return None
+
+
+def exprnode_to_known_standard_library_name(node, env):
+    qualified_name_parts = []
+    known_name = None
+    while node.is_attribute:
+        qualified_name_parts.append(node.attribute)
+        node = node.obj
+    if node.is_name:
+        entry = env.lookup(node.name)
+        if entry and entry.known_standard_library_import:
+            if get_known_standard_library_entry(
+                    entry.known_standard_library_import):
+                known_name = entry.known_standard_library_import
+            else:
+                standard_env = get_known_standard_library_module_scope(
+                    entry.known_standard_library_import)
+                if standard_env:
+                    qualified_name_parts.append(standard_env.name)
+                    known_name = ".".join(reversed(qualified_name_parts))
+    return known_name

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/CmdLine.py

@@ -0,0 +1,251 @@
+#
+#   Cython - Command Line Parsing
+#
+
+from __future__ import absolute_import
+
+import sys
+import os
+from argparse import ArgumentParser, Action, SUPPRESS
+from . import Options
+
+
+if sys.version_info < (3, 3):
+    # TODO: This workaround can be removed in Cython 3.1
+    FileNotFoundError = IOError
+
+
+class ParseDirectivesAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        old_directives = dict(getattr(namespace, self.dest,
+                                      Options.get_directive_defaults()))
+        directives = Options.parse_directive_list(
+            values, relaxed_bool=True, current_settings=old_directives)
+        setattr(namespace, self.dest, directives)
+
+
+class ParseOptionsAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        options = dict(getattr(namespace, self.dest, {}))
+        for opt in values.split(','):
+            if '=' in opt:
+                n, v = opt.split('=', 1)
+                v = v.lower() not in ('false', 'f', '0', 'no')
+            else:
+                n, v = opt, True
+            options[n] = v
+        setattr(namespace, self.dest, options)
+
+
+class ParseCompileTimeEnvAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        old_env = dict(getattr(namespace, self.dest, {}))
+        new_env = Options.parse_compile_time_env(values, current_settings=old_env)
+        setattr(namespace, self.dest, new_env)
+
+
+class ActivateAllWarningsAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        directives = getattr(namespace, 'compiler_directives', {})
+        directives.update(Options.extra_warnings)
+        namespace.compiler_directives = directives
+
+
+class SetLenientAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        namespace.error_on_unknown_names = False
+        namespace.error_on_uninitialized = False
+
+
+class SetGDBDebugAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        namespace.gdb_debug = True
+        namespace.output_dir = os.curdir
+
+
+class SetGDBDebugOutputAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        namespace.gdb_debug = True
+        namespace.output_dir = values
+
+
+class SetAnnotateCoverageAction(Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        namespace.annotate = True
+        namespace.annotate_coverage_xml = values
+
+
+def create_cython_argparser():
+    description = "Cython (https://cython.org/) is a compiler for code written in the "\
+                  "Cython language.  Cython is based on Pyrex by Greg Ewing."
+
+    parser = ArgumentParser(description=description, argument_default=SUPPRESS)
+
+    parser.add_argument("-V", "--version", dest='show_version', action='store_const', const=1,
+                      help='Display version number of cython compiler')
+    parser.add_argument("-l", "--create-listing", dest='use_listing_file', action='store_const', const=1,
+                      help='Write error messages to a listing file')
+    parser.add_argument("-I", "--include-dir", dest='include_path', action='append',
+                      help='Search for include files in named directory '
+                           '(multiple include directories are allowed).')
+    parser.add_argument("-o", "--output-file", dest='output_file', action='store', type=str,
+                      help='Specify name of generated C file')
+    parser.add_argument("-t", "--timestamps", dest='timestamps', action='store_const', const=1,
+                      help='Only compile newer source files')
+    parser.add_argument("-f", "--force", dest='timestamps', action='store_const', const=0,
+                      help='Compile all source files (overrides implied -t)')
+    parser.add_argument("-v", "--verbose", dest='verbose', action='count',
+                      help='Be verbose, print file names on multiple compilation')
+    parser.add_argument("-p", "--embed-positions", dest='embed_pos_in_docstring', action='store_const', const=1,
+                      help='If specified, the positions in Cython files of each '
+                           'function definition is embedded in its docstring.')
+    parser.add_argument("--cleanup", dest='generate_cleanup_code', action='store', type=int,
+                      help='Release interned objects on python exit, for memory debugging. '
+                           'Level indicates aggressiveness, default 0 releases nothing.')
+    parser.add_argument("-w", "--working", dest='working_path', action='store', type=str,
+                      help='Sets the working directory for Cython (the directory modules are searched from)')
+    parser.add_argument("--gdb", action=SetGDBDebugAction, nargs=0,
+                      help='Output debug information for cygdb')
+    parser.add_argument("--gdb-outdir", action=SetGDBDebugOutputAction, type=str,
+                      help='Specify gdb debug information output directory. Implies --gdb.')
+    parser.add_argument("-D", "--no-docstrings", dest='docstrings', action='store_false',
+                      help='Strip docstrings from the compiled module.')
+    parser.add_argument('-a', '--annotate', action='store_const', const='default', dest='annotate',
+                      help='Produce a colorized HTML version of the source.')
+    parser.add_argument('--annotate-fullc', action='store_const', const='fullc', dest='annotate',
+                      help='Produce a colorized HTML version of the source '
+                           'which includes entire generated C/C++-code.')
+    parser.add_argument("--annotate-coverage", dest='annotate_coverage_xml', action=SetAnnotateCoverageAction, type=str,
+                      help='Annotate and include coverage information from cov.xml.')
+    parser.add_argument("--line-directives", dest='emit_linenums', action='store_true',
+                      help='Produce #line directives pointing to the .pyx source')
+    parser.add_argument("-+", "--cplus", dest='cplus', action='store_const', const=1,
+                      help='Output a C++ rather than C file.')
+    parser.add_argument('--embed', action='store_const', const='main',
+                      help='Generate a main() function that embeds the Python interpreter. '
+                           'Pass --embed=<method_name> for a name other than main().')
+    parser.add_argument('-2', dest='language_level', action='store_const', const=2,
+                      help='Compile based on Python-2 syntax and code semantics.')
+    parser.add_argument('-3', dest='language_level', action='store_const', const=3,
+                      help='Compile based on Python-3 syntax and code semantics.')
+    parser.add_argument('--3str', dest='language_level', action='store_const', const='3str',
+                      help='Compile based on Python-3 syntax and code semantics without '
+                           'assuming unicode by default for string literals under Python 2.')
+    parser.add_argument("--lenient", action=SetLenientAction, nargs=0,
+                      help='Change some compile time errors to runtime errors to '
+                           'improve Python compatibility')
+    parser.add_argument("--capi-reexport-cincludes", dest='capi_reexport_cincludes', action='store_true',
+                      help='Add cincluded headers to any auto-generated header files.')
+    parser.add_argument("--fast-fail", dest='fast_fail', action='store_true',
+                      help='Abort the compilation on the first error')
+    parser.add_argument("-Werror", "--warning-errors", dest='warning_errors', action='store_true',
+                      help='Make all warnings into errors')
+    parser.add_argument("-Wextra", "--warning-extra", action=ActivateAllWarningsAction, nargs=0,
+                      help='Enable extra warnings')
+
+    parser.add_argument('-X', '--directive', metavar='NAME=VALUE,...',
+                      dest='compiler_directives', type=str,
+                      action=ParseDirectivesAction,
+                      help='Overrides a compiler directive')
+    parser.add_argument('-E', '--compile-time-env', metavar='NAME=VALUE,...',
+                      dest='compile_time_env', type=str,
+                      action=ParseCompileTimeEnvAction,
+                      help='Provides compile time env like DEF would do.')
+    parser.add_argument("--module-name",
+                      dest='module_name', type=str, action='store',
+                      help='Fully qualified module name. If not given, is '
+                           'deduced from the import path if source file is in '
+                           'a package, or equals the filename otherwise.')
+    parser.add_argument('-M', '--depfile', action='store_true', help='produce depfiles for the sources')
+    parser.add_argument('sources', nargs='*', default=[])
+
+    # TODO: add help
+    parser.add_argument("-z", "--pre-import", dest='pre_import', action='store', type=str, help=SUPPRESS)
+    parser.add_argument("--convert-range", dest='convert_range', action='store_true', help=SUPPRESS)
+    parser.add_argument("--no-c-in-traceback", dest='c_line_in_traceback', action='store_false', help=SUPPRESS)
+    parser.add_argument("--cimport-from-pyx", dest='cimport_from_pyx', action='store_true', help=SUPPRESS)
+    parser.add_argument("--old-style-globals", dest='old_style_globals', action='store_true', help=SUPPRESS)
+
+    # debug stuff:
+    from . import DebugFlags
+    for name in vars(DebugFlags):
+        if name.startswith("debug"):
+            option_name = name.replace('_', '-')
+            parser.add_argument("--" + option_name, action='store_true', help=SUPPRESS)
+
+    return parser
+
+
+def parse_command_line_raw(parser, args):
+    # special handling for --embed and --embed=xxxx as they aren't correctly parsed
+    def filter_out_embed_options(args):
+        with_embed, without_embed = [], []
+        for x in args:
+            if x == '--embed' or x.startswith('--embed='):
+                with_embed.append(x)
+            else:
+                without_embed.append(x)
+        return with_embed, without_embed
+
+    with_embed, args_without_embed = filter_out_embed_options(args)
+
+    arguments, unknown = parser.parse_known_args(args_without_embed)
+
+    sources = arguments.sources
+    del arguments.sources
+
+    # unknown can be either debug, embed or input files or really unknown
+    for option in unknown:
+        if option.startswith('-'):
+            parser.error("unknown option " + option)
+        else:
+            sources.append(option)
+
+    # embed-stuff must be handled extra:
+    for x in with_embed:
+        if x == '--embed':
+            name = 'main'  # default value
+        else:
+            name = x[len('--embed='):]
+        setattr(arguments, 'embed', name)
+
+    return arguments, sources
+
+
+def parse_command_line(args):
+    parser = create_cython_argparser()
+    arguments, sources = parse_command_line_raw(parser, args)
+
+    work_dir = getattr(arguments, 'working_path', '')
+    for source in sources:
+        if work_dir and not os.path.isabs(source):
+            source = os.path.join(work_dir, source)
+        if not os.path.exists(source):
+            import errno
+            raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), source)
+
+    options = Options.CompilationOptions(Options.default_options)
+    for name, value in vars(arguments).items():
+        if name.startswith('debug'):
+            from . import DebugFlags
+            if name in dir(DebugFlags):
+                setattr(DebugFlags, name, value)
+            else:
+                parser.error("Unknown debug flag: %s\n" % name)
+        elif hasattr(Options, name):
+            setattr(Options, name, value)
+        else:
+            setattr(options, name, value)
+
+    if options.use_listing_file and len(sources) > 1:
+        parser.error("cython: Only one source file allowed when using -o\n")
+    if len(sources) == 0 and not options.show_version:
+        parser.error("cython: Need at least one source file\n")
+    if Options.embed and len(sources) > 1:
+        parser.error("cython: Only one source file allowed when using --embed\n")
+    if options.module_name:
+        if options.timestamps:
+            parser.error("cython: Cannot use --module-name with --timestamps\n")
+        if len(sources) > 1:
+            parser.error("cython: Only one source file allowed when using --module-name\n")
+    return options, sources

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Code.pxd

@@ -0,0 +1,131 @@
+# cython: language_level=3
+
+cimport cython
+from ..StringIOTree cimport StringIOTree
+
+
+cdef class UtilityCodeBase(object):
+    cpdef format_code(self, code_string, replace_empty_lines=*)
+
+
+cdef class UtilityCode(UtilityCodeBase):
+    cdef public object name
+    cdef public object proto
+    cdef public object impl
+    cdef public object init
+    cdef public object cleanup
+    cdef public object proto_block
+    cdef public object requires
+    cdef public dict _cache
+    cdef public list specialize_list
+    cdef public object file
+
+    cpdef none_or_sub(self, s, context)
+
+
+cdef class FunctionState:
+    cdef public set names_taken
+    cdef public object owner
+    cdef public object scope
+
+    cdef public object error_label
+    cdef public size_t label_counter
+    cdef public set labels_used
+    cdef public object return_label
+    cdef public object continue_label
+    cdef public object break_label
+    cdef public list yield_labels
+
+    cdef public object return_from_error_cleanup_label # not used in __init__ ?
+
+    cdef public object exc_vars
+    cdef public object current_except
+    cdef public bint in_try_finally
+    cdef public bint can_trace
+    cdef public bint gil_owned
+
+    cdef public list temps_allocated
+    cdef public dict temps_free
+    cdef public dict temps_used_type
+    cdef public set zombie_temps
+    cdef public size_t temp_counter
+    cdef public list collect_temps_stack
+
+    cdef public object closure_temps
+    cdef public bint should_declare_error_indicator
+    cdef public bint uses_error_indicator
+    cdef public bint error_without_exception
+
+    cdef public bint needs_refnanny
+
+    @cython.locals(n=size_t)
+    cpdef new_label(self, name=*)
+    cpdef tuple get_loop_labels(self)
+    cpdef set_loop_labels(self, labels)
+    cpdef tuple get_all_labels(self)
+    cpdef set_all_labels(self, labels)
+    cpdef start_collecting_temps(self)
+    cpdef stop_collecting_temps(self)
+
+    cpdef list temps_in_use(self)
+
+cdef class IntConst:
+    cdef public object cname
+    cdef public object value
+    cdef public bint is_long
+
+cdef class PyObjectConst:
+    cdef public object cname
+    cdef public object type
+
+cdef class StringConst:
+    cdef public object cname
+    cdef public object text
+    cdef public object escaped_value
+    cdef public dict py_strings
+    cdef public list py_versions
+
+    @cython.locals(intern=bint, is_str=bint, is_unicode=bint)
+    cpdef get_py_string_const(self, encoding, identifier=*, is_str=*, py3str_cstring=*)
+
+## cdef class PyStringConst:
+##     cdef public object cname
+##     cdef public object encoding
+##     cdef public bint is_str
+##     cdef public bint is_unicode
+##     cdef public bint intern
+
+#class GlobalState(object):
+
+#def funccontext_property(name):
+
+cdef class CCodeWriter(object):
+    cdef readonly StringIOTree buffer
+    cdef readonly list pyclass_stack
+    cdef readonly object globalstate
+    cdef readonly object funcstate
+    cdef object code_config
+    cdef object last_pos
+    cdef object last_marked_pos
+    cdef Py_ssize_t level
+    cdef public Py_ssize_t call_level  # debug-only, see Nodes.py
+    cdef bint bol
+
+    cpdef write(self, s)
+    @cython.final
+    cdef _write_lines(self, s)
+    cpdef _write_to_buffer(self, s)
+    cpdef put(self, code)
+    cpdef put_safe(self, code)
+    cpdef putln(self, code=*, bint safe=*)
+    @cython.final
+    cdef increase_indent(self)
+    @cython.final
+    cdef decrease_indent(self)
+    @cython.final
+    cdef indent(self)
+
+
+cdef class PyrexCodeWriter:
+    cdef public object f
+    cdef public Py_ssize_t level

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/CodeGeneration.py

@@ -0,0 +1,35 @@
+from __future__ import absolute_import
+
+from .Visitor import VisitorTransform
+from .Nodes import StatListNode
+
+
+class ExtractPxdCode(VisitorTransform):
+    """
+    Finds nodes in a pxd file that should generate code, and
+    returns them in a StatListNode.
+
+    The result is a tuple (StatListNode, ModuleScope), i.e.
+    everything that is needed from the pxd after it is processed.
+
+    A purer approach would be to separately compile the pxd code,
+    but the result would have to be slightly more sophisticated
+    than pure strings (functions + wanted interned strings +
+    wanted utility code + wanted cached objects) so for now this
+    approach is taken.
+    """
+
+    def __call__(self, root):
+        self.funcs = []
+        self.visitchildren(root)
+        return (StatListNode(root.pos, stats=self.funcs), root.scope)
+
+    def visit_FuncDefNode(self, node):
+        self.funcs.append(node)
+        # Do not visit children, nested funcdefnodes will
+        # also be moved by this action...
+        return node
+
+    def visit_Node(self, node):
+        self.visitchildren(node)
+        return node

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/CythonScope.py

@@ -0,0 +1,181 @@
+from __future__ import absolute_import
+
+from .Symtab import ModuleScope
+from .PyrexTypes import *
+from .UtilityCode import CythonUtilityCode
+from .Errors import error
+from .Scanning import StringSourceDescriptor
+from . import MemoryView
+from .StringEncoding import EncodedString
+
+
+class CythonScope(ModuleScope):
+    is_cython_builtin = 1
+    _cythonscope_initialized = False
+
+    def __init__(self, context):
+        ModuleScope.__init__(self, u'cython', None, None)
+        self.pxd_file_loaded = True
+        self.populate_cython_scope()
+        # The Main.Context object
+        self.context = context
+
+        for fused_type in (cy_integral_type, cy_floating_type, cy_numeric_type):
+            entry = self.declare_typedef(fused_type.name,
+                                         fused_type,
+                                         None,
+                                         cname='<error>')
+            entry.in_cinclude = True
+
+    def is_cpp(self):
+        # Allow C++ utility code in C++ contexts.
+        return self.context.cpp
+
+    def lookup_type(self, name):
+        # This function should go away when types are all first-level objects.
+        type = parse_basic_type(name)
+        if type:
+            return type
+
+        return super(CythonScope, self).lookup_type(name)
+
+    def lookup(self, name):
+        entry = super(CythonScope, self).lookup(name)
+
+        if entry is None and not self._cythonscope_initialized:
+            self.load_cythonscope()
+            entry = super(CythonScope, self).lookup(name)
+
+        return entry
+
+    def find_module(self, module_name, pos):
+        error("cython.%s is not available" % module_name, pos)
+
+    def find_submodule(self, module_name, as_package=False):
+        entry = self.entries.get(module_name, None)
+        if not entry:
+            self.load_cythonscope()
+            entry = self.entries.get(module_name, None)
+
+        if entry and entry.as_module:
+            return entry.as_module
+        else:
+            # TODO: fix find_submodule control flow so that we're not
+            # expected to create a submodule here (to protect CythonScope's
+            # possible immutability). Hack ourselves out of the situation
+            # for now.
+            raise error((StringSourceDescriptor(u"cython", u""), 0, 0),
+                  "cython.%s is not available" % module_name)
+
+    def lookup_qualified_name(self, qname):
+        # ExprNode.as_cython_attribute generates qnames and we untangle it here...
+        name_path = qname.split(u'.')
+        scope = self
+        while len(name_path) > 1:
+            scope = scope.lookup_here(name_path[0])
+            if scope:
+                scope = scope.as_module
+            del name_path[0]
+            if scope is None:
+                return None
+        else:
+            return scope.lookup_here(name_path[0])
+
+    def populate_cython_scope(self):
+        # These are used to optimize isinstance in FinalOptimizePhase
+        type_object = self.declare_typedef(
+            'PyTypeObject',
+            base_type = c_void_type,
+            pos = None,
+            cname = 'PyTypeObject')
+        type_object.is_void = True
+        type_object_type = type_object.type
+
+        self.declare_cfunction(
+            'PyObject_TypeCheck',
+            CFuncType(c_bint_type, [CFuncTypeArg("o", py_object_type, None),
+                                    CFuncTypeArg("t", c_ptr_type(type_object_type), None)]),
+            pos = None,
+            defining = 1,
+            cname = 'PyObject_TypeCheck')
+
+    def load_cythonscope(self):
+        """
+        Creates some entries for testing purposes and entries for
+        cython.array() and for cython.view.*.
+        """
+        if self._cythonscope_initialized:
+            return
+
+        self._cythonscope_initialized = True
+        cython_testscope_utility_code.declare_in_scope(
+                                self, cython_scope=self)
+        cython_test_extclass_utility_code.declare_in_scope(
+                                    self, cython_scope=self)
+
+        #
+        # The view sub-scope
+        #
+        self.viewscope = viewscope = ModuleScope(u'view', self, None)
+        self.declare_module('view', viewscope, None).as_module = viewscope
+        viewscope.is_cython_builtin = True
+        viewscope.pxd_file_loaded = True
+
+        cythonview_testscope_utility_code.declare_in_scope(
+                                            viewscope, cython_scope=self)
+
+        view_utility_scope = MemoryView.view_utility_code.declare_in_scope(
+                                            self.viewscope, cython_scope=self,
+                                            allowlist=MemoryView.view_utility_allowlist)
+
+        # Marks the types as being cython_builtin_type so that they can be
+        # extended from without Cython attempting to import cython.view
+        ext_types = [ entry.type
+                         for entry in view_utility_scope.entries.values()
+                         if entry.type.is_extension_type ]
+        for ext_type in ext_types:
+            ext_type.is_cython_builtin_type = 1
+
+        # self.entries["array"] = view_utility_scope.entries.pop("array")
+
+        # dataclasses scope
+        dc_str = EncodedString(u'dataclasses')
+        dataclassesscope = ModuleScope(dc_str, self, context=None)
+        self.declare_module(dc_str, dataclassesscope, pos=None).as_module = dataclassesscope
+        dataclassesscope.is_cython_builtin = True
+        dataclassesscope.pxd_file_loaded = True
+        # doesn't actually have any contents
+
+
+def create_cython_scope(context):
+    # One could in fact probably make it a singleton,
+    # but not sure yet whether any code mutates it (which would kill reusing
+    # it across different contexts)
+    return CythonScope(context)
+
+# Load test utilities for the cython scope
+
+def load_testscope_utility(cy_util_name, **kwargs):
+    return CythonUtilityCode.load(cy_util_name, "TestCythonScope.pyx", **kwargs)
+
+
+undecorated_methods_protos = UtilityCode(proto=u"""
+    /* These methods are undecorated and have therefore no prototype */
+    static PyObject *__pyx_TestClass_cdef_method(
+            struct __pyx_TestClass_obj *self, int value);
+    static PyObject *__pyx_TestClass_cpdef_method(
+            struct __pyx_TestClass_obj *self, int value, int skip_dispatch);
+    static PyObject *__pyx_TestClass_def_method(
+            PyObject *self, PyObject *value);
+""")
+
+cython_testscope_utility_code = load_testscope_utility("TestScope")
+
+test_cython_utility_dep = load_testscope_utility("TestDep")
+
+cython_test_extclass_utility_code = \
+    load_testscope_utility("TestClass", name="TestClass",
+                           requires=[undecorated_methods_protos,
+                                     test_cython_utility_dep])
+
+cythonview_testscope_utility_code = load_testscope_utility("View.TestScope")

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Dataclass.py

@@ -0,0 +1,839 @@
+# functions to transform a c class into a dataclass
+
+from collections import OrderedDict
+from textwrap import dedent
+import operator
+
+from . import ExprNodes
+from . import Nodes
+from . import PyrexTypes
+from . import Builtin
+from . import Naming
+from .Errors import error, warning
+from .Code import UtilityCode, TempitaUtilityCode, PyxCodeWriter
+from .Visitor import VisitorTransform
+from .StringEncoding import EncodedString
+from .TreeFragment import TreeFragment
+from .ParseTreeTransforms import NormalizeTree, SkipDeclarations
+from .Options import copy_inherited_directives
+
+_dataclass_loader_utilitycode = None
+
+def make_dataclasses_module_callnode(pos):
+    global _dataclass_loader_utilitycode
+    if not _dataclass_loader_utilitycode:
+        python_utility_code = UtilityCode.load_cached("Dataclasses_fallback", "Dataclasses.py")
+        python_utility_code = EncodedString(python_utility_code.impl)
+        _dataclass_loader_utilitycode = TempitaUtilityCode.load(
+            "SpecificModuleLoader", "Dataclasses.c",
+            context={'cname': "dataclasses", 'py_code': python_utility_code.as_c_string_literal()})
+    return ExprNodes.PythonCapiCallNode(
+        pos, "__Pyx_Load_dataclasses_Module",
+        PyrexTypes.CFuncType(PyrexTypes.py_object_type, []),
+        utility_code=_dataclass_loader_utilitycode,
+        args=[],
+    )
+
+def make_dataclass_call_helper(pos, callable, kwds):
+    utility_code = UtilityCode.load_cached("DataclassesCallHelper", "Dataclasses.c")
+    func_type = PyrexTypes.CFuncType(
+        PyrexTypes.py_object_type, [
+            PyrexTypes.CFuncTypeArg("callable", PyrexTypes.py_object_type, None),
+            PyrexTypes.CFuncTypeArg("kwds", PyrexTypes.py_object_type, None)
+        ],
+    )
+    return ExprNodes.PythonCapiCallNode(
+        pos,
+        function_name="__Pyx_DataclassesCallHelper",
+        func_type=func_type,
+        utility_code=utility_code,
+        args=[callable, kwds],
+    )
+
+
+class RemoveAssignmentsToNames(VisitorTransform, SkipDeclarations):
+    """
+    Cython (and Python) normally treats
+
+    class A:
+         x = 1
+
+    as generating a class attribute. However for dataclasses the `= 1` should be interpreted as
+    a default value to initialize an instance attribute with.
+    This transform therefore removes the `x=1` assignment so that the class attribute isn't
+    generated, while recording what it has removed so that it can be used in the initialization.
+    """
+    def __init__(self, names):
+        super(RemoveAssignmentsToNames, self).__init__()
+        self.names = names
+        self.removed_assignments = {}
+
+    def visit_CClassNode(self, node):
+        self.visitchildren(node)
+        return node
+
+    def visit_PyClassNode(self, node):
+        return node  # go no further
+
+    def visit_FuncDefNode(self, node):
+        return node  # go no further
+
+    def visit_SingleAssignmentNode(self, node):
+        if node.lhs.is_name and node.lhs.name in self.names:
+            if node.lhs.name in self.removed_assignments:
+                warning(node.pos, ("Multiple assignments for '%s' in dataclass; "
+                                   "using most recent") % node.lhs.name, 1)
+            self.removed_assignments[node.lhs.name] = node.rhs
+            return []
+        return node
+
+    # I believe cascaded assignment is always a syntax error with annotations
+    # so there's no need to define visit_CascadedAssignmentNode
+
+    def visit_Node(self, node):
+        self.visitchildren(node)
+        return node
+
+
+class TemplateCode(object):
+    """
+    Adds the ability to keep track of placeholder argument names to PyxCodeWriter.
+
+    Also adds extra_stats which are nodes bundled at the end when this
+    is converted to a tree.
+    """
+    _placeholder_count = 0
+
+    def __init__(self, writer=None, placeholders=None, extra_stats=None):
+        self.writer = PyxCodeWriter() if writer is None else writer
+        self.placeholders = {} if placeholders is None else placeholders
+        self.extra_stats = [] if extra_stats is None else extra_stats
+
+    def add_code_line(self, code_line):
+        self.writer.putln(code_line)
+
+    def add_code_lines(self, code_lines):
+        for line in code_lines:
+            self.writer.putln(line)
+
+    def reset(self):
+        # don't attempt to reset placeholders - it really doesn't matter if
+        # we have unused placeholders
+        self.writer.reset()
+
+    def empty(self):
+        return self.writer.empty()
+
+    def indenter(self):
+        return self.writer.indenter()
+
+    def new_placeholder(self, field_names, value):
+        name = self._new_placeholder_name(field_names)
+        self.placeholders[name] = value
+        return name
+
+    def add_extra_statements(self, statements):
+        if self.extra_stats is None:
+            assert False, "Can only use add_extra_statements on top-level writer"
+        self.extra_stats.extend(statements)
+
+    def _new_placeholder_name(self, field_names):
+        while True:
+            name = "DATACLASS_PLACEHOLDER_%d" % self._placeholder_count
+            if (name not in self.placeholders
+                    and name not in field_names):
+                # make sure name isn't already used and doesn't
+                # conflict with a variable name (which is unlikely but possible)
+                break
+            self._placeholder_count += 1
+        return name
+
+    def generate_tree(self, level='c_class'):
+        stat_list_node = TreeFragment(
+            self.writer.getvalue(),
+            level=level,
+            pipeline=[NormalizeTree(None)],
+        ).substitute(self.placeholders)
+
+        stat_list_node.stats += self.extra_stats
+        return stat_list_node
+
+    def insertion_point(self):
+        new_writer = self.writer.insertion_point()
+        return TemplateCode(
+            writer=new_writer,
+            placeholders=self.placeholders,
+            extra_stats=self.extra_stats
+        )
+
+
+class _MISSING_TYPE(object):
+    pass
+MISSING = _MISSING_TYPE()
+
+
+class Field(object):
+    """
+    Field is based on the dataclasses.field class from the standard library module.
+    It is used internally during the generation of Cython dataclasses to keep track
+    of the settings for individual attributes.
+
+    Attributes of this class are stored as nodes so they can be used in code construction
+    more readily (i.e. we store BoolNode rather than bool)
+    """
+    default = MISSING
+    default_factory = MISSING
+    private = False
+
+    literal_keys = ("repr", "hash", "init", "compare", "metadata")
+
+    # default values are defined by the CPython dataclasses.field
+    def __init__(self, pos, default=MISSING, default_factory=MISSING,
+                 repr=None, hash=None, init=None,
+                 compare=None, metadata=None,
+                 is_initvar=False, is_classvar=False,
+                 **additional_kwds):
+        if default is not MISSING:
+            self.default = default
+        if default_factory is not MISSING:
+            self.default_factory = default_factory
+        self.repr = repr or ExprNodes.BoolNode(pos, value=True)
+        self.hash = hash or ExprNodes.NoneNode(pos)
+        self.init = init or ExprNodes.BoolNode(pos, value=True)
+        self.compare = compare or ExprNodes.BoolNode(pos, value=True)
+        self.metadata = metadata or ExprNodes.NoneNode(pos)
+        self.is_initvar = is_initvar
+        self.is_classvar = is_classvar
+
+        for k, v in additional_kwds.items():
+            # There should not be any additional keywords!
+            error(v.pos, "cython.dataclasses.field() got an unexpected keyword argument '%s'" % k)
+
+        for field_name in self.literal_keys:
+            field_value = getattr(self, field_name)
+            if not field_value.is_literal:
+                error(field_value.pos,
+                      "cython.dataclasses.field parameter '%s' must be a literal value" % field_name)
+
+    def iterate_record_node_arguments(self):
+        for key in (self.literal_keys + ('default', 'default_factory')):
+            value = getattr(self, key)
+            if value is not MISSING:
+                yield key, value
+
+
+def process_class_get_fields(node):
+    var_entries = node.scope.var_entries
+    # order of definition is used in the dataclass
+    var_entries = sorted(var_entries, key=operator.attrgetter('pos'))
+    var_names = [entry.name for entry in var_entries]
+
+    # don't treat `x = 1` as an assignment of a class attribute within the dataclass
+    transform = RemoveAssignmentsToNames(var_names)
+    transform(node)
+    default_value_assignments = transform.removed_assignments
+
+    base_type = node.base_type
+    fields = OrderedDict()
+    while base_type:
+        if base_type.is_external or not base_type.scope.implemented:
+            warning(node.pos, "Cannot reliably handle Cython dataclasses with base types "
+                "in external modules since it is not possible to tell what fields they have", 2)
+        if base_type.dataclass_fields:
+            fields = base_type.dataclass_fields.copy()
+            break
+        base_type = base_type.base_type
+
+    for entry in var_entries:
+        name = entry.name
+        is_initvar = entry.declared_with_pytyping_modifier("dataclasses.InitVar")
+        # TODO - classvars aren't included in "var_entries" so are missed here
+        # and thus this code is never triggered
+        is_classvar = entry.declared_with_pytyping_modifier("typing.ClassVar")
+        if name in default_value_assignments:
+            assignment = default_value_assignments[name]
+            if (isinstance(assignment, ExprNodes.CallNode) and (
+                    assignment.function.as_cython_attribute() == "dataclasses.field" or
+                    Builtin.exprnode_to_known_standard_library_name(
+                        assignment.function, node.scope) == "dataclasses.field")):
+                # I believe most of this is well-enforced when it's treated as a directive
+                # but it doesn't hurt to make sure
+                valid_general_call = (isinstance(assignment, ExprNodes.GeneralCallNode)
+                        and isinstance(assignment.positional_args, ExprNodes.TupleNode)
+                        and not assignment.positional_args.args
+                        and (assignment.keyword_args is None or isinstance(assignment.keyword_args, ExprNodes.DictNode)))
+                valid_simple_call = (isinstance(assignment, ExprNodes.SimpleCallNode) and not assignment.args)
+                if not (valid_general_call or valid_simple_call):
+                    error(assignment.pos, "Call to 'cython.dataclasses.field' must only consist "
+                          "of compile-time keyword arguments")
+                    continue
+                keyword_args = assignment.keyword_args.as_python_dict() if valid_general_call and assignment.keyword_args else {}
+                if 'default' in keyword_args and 'default_factory' in keyword_args:
+                    error(assignment.pos, "cannot specify both default and default_factory")
+                    continue
+                field = Field(node.pos, **keyword_args)
+            else:
+                if assignment.type in [Builtin.list_type, Builtin.dict_type, Builtin.set_type]:
+                    # The standard library module generates a TypeError at runtime
+                    # in this situation.
+                    # Error message is copied from CPython
+                    error(assignment.pos, "mutable default <class '{0}'> for field {1} is not allowed: "
+                          "use default_factory".format(assignment.type.name, name))
+
+                field = Field(node.pos, default=assignment)
+        else:
+            field = Field(node.pos)
+        field.is_initvar = is_initvar
+        field.is_classvar = is_classvar
+        if entry.visibility == "private":
+            field.private = True
+        fields[name] = field
+    node.entry.type.dataclass_fields = fields
+    return fields
+
+
+def handle_cclass_dataclass(node, dataclass_args, analyse_decs_transform):
+    # default argument values from https://docs.python.org/3/library/dataclasses.html
+    kwargs = dict(init=True, repr=True, eq=True,
+                  order=False, unsafe_hash=False,
+                  frozen=False, kw_only=False)
+    if dataclass_args is not None:
+        if dataclass_args[0]:
+            error(node.pos, "cython.dataclasses.dataclass takes no positional arguments")
+        for k, v in dataclass_args[1].items():
+            if k not in kwargs:
+                error(node.pos,
+                      "cython.dataclasses.dataclass() got an unexpected keyword argument '%s'" % k)
+            if not isinstance(v, ExprNodes.BoolNode):
+                error(node.pos,
+                      "Arguments passed to cython.dataclasses.dataclass must be True or False")
+            kwargs[k] = v.value
+
+    kw_only = kwargs['kw_only']
+
+    fields = process_class_get_fields(node)
+
+    dataclass_module = make_dataclasses_module_callnode(node.pos)
+
+    # create __dataclass_params__ attribute. I try to use the exact
+    # `_DataclassParams` class defined in the standard library module if at all possible
+    # for maximum duck-typing compatibility.
+    dataclass_params_func = ExprNodes.AttributeNode(node.pos, obj=dataclass_module,
+                                                    attribute=EncodedString("_DataclassParams"))
+    dataclass_params_keywords = ExprNodes.DictNode.from_pairs(
+        node.pos,
+        [ (ExprNodes.IdentifierStringNode(node.pos, value=EncodedString(k)),
+           ExprNodes.BoolNode(node.pos, value=v))
+          for k, v in kwargs.items() ] +
+        [ (ExprNodes.IdentifierStringNode(node.pos, value=EncodedString(k)),
+           ExprNodes.BoolNode(node.pos, value=v))
+          for k, v in [('kw_only', kw_only), ('match_args', False),
+                       ('slots', False), ('weakref_slot', False)]
+        ])
+    dataclass_params = make_dataclass_call_helper(
+        node.pos, dataclass_params_func, dataclass_params_keywords)
+    dataclass_params_assignment = Nodes.SingleAssignmentNode(
+        node.pos,
+        lhs = ExprNodes.NameNode(node.pos, name=EncodedString("__dataclass_params__")),
+        rhs = dataclass_params)
+
+    dataclass_fields_stats = _set_up_dataclass_fields(node, fields, dataclass_module)
+
+    stats = Nodes.StatListNode(node.pos,
+                               stats=[dataclass_params_assignment] + dataclass_fields_stats)
+
+    code = TemplateCode()
+    generate_init_code(code, kwargs['init'], node, fields, kw_only)
+    generate_repr_code(code, kwargs['repr'], node, fields)
+    generate_eq_code(code, kwargs['eq'], node, fields)
+    generate_order_code(code, kwargs['order'], node, fields)
+    generate_hash_code(code, kwargs['unsafe_hash'], kwargs['eq'], kwargs['frozen'], node, fields)
+
+    stats.stats += code.generate_tree().stats
+
+    # turn off annotation typing, so all arguments to __init__ are accepted as
+    # generic objects and thus can accept _HAS_DEFAULT_FACTORY.
+    # Type conversion comes later
+    comp_directives = Nodes.CompilerDirectivesNode(node.pos,
+        directives=copy_inherited_directives(node.scope.directives, annotation_typing=False),
+        body=stats)
+
+    comp_directives.analyse_declarations(node.scope)
+    # probably already in this scope, but it doesn't hurt to make sure
+    analyse_decs_transform.enter_scope(node, node.scope)
+    analyse_decs_transform.visit(comp_directives)
+    analyse_decs_transform.exit_scope()
+
+    node.body.stats.append(comp_directives)
+
+
+def generate_init_code(code, init, node, fields, kw_only):
+    """
+    Notes on CPython generated "__init__":
+    * Implemented in `_init_fn`.
+    * The use of the `dataclasses._HAS_DEFAULT_FACTORY` sentinel value as
+      the default argument for fields that need constructing with a factory
+      function is copied from the CPython implementation. (`None` isn't
+      suitable because it could also be a value for the user to pass.)
+      There's no real reason why it needs importing from the dataclasses module
+      though - it could equally be a value generated by Cython when the module loads.
+    * seen_default and the associated error message are copied directly from Python
+    * Call to user-defined __post_init__ function (if it exists) is copied from
+      CPython.
+
+    Cython behaviour deviates a little here (to be decided if this is right...)
+    Because the class variable from the assignment does not exist Cython fields will
+    return None (or whatever their type default is) if not initialized while Python
+    dataclasses will fall back to looking up the class variable.
+    """
+    if not init or node.scope.lookup_here("__init__"):
+        return
+
+    # selfname behaviour copied from the cpython module
+    selfname = "__dataclass_self__" if "self" in fields else "self"
+    args = [selfname]
+
+    if kw_only:
+        args.append("*")
+
+    function_start_point = code.insertion_point()
+    code = code.insertion_point()
+
+    # create a temp to get _HAS_DEFAULT_FACTORY
+    dataclass_module = make_dataclasses_module_callnode(node.pos)
+    has_default_factory = ExprNodes.AttributeNode(
+        node.pos,
+        obj=dataclass_module,
+        attribute=EncodedString("_HAS_DEFAULT_FACTORY")
+    )
+
+    default_factory_placeholder = code.new_placeholder(fields, has_default_factory)
+
+    seen_default = False
+    for name, field in fields.items():
+        entry = node.scope.lookup(name)
+        if entry.annotation:
+            annotation = u": %s" % entry.annotation.string.value
+        else:
+            annotation = u""
+        assignment = u''
+        if field.default is not MISSING or field.default_factory is not MISSING:
+            seen_default = True
+            if field.default_factory is not MISSING:
+                ph_name = default_factory_placeholder
+            else:
+                ph_name = code.new_placeholder(fields, field.default)  # 'default' should be a node
+            assignment = u" = %s" % ph_name
+        elif seen_default and not kw_only and field.init.value:
+            error(entry.pos, ("non-default argument '%s' follows default argument "
+                              "in dataclass __init__") % name)
+            code.reset()
+            return
+
+        if field.init.value:
+            args.append(u"%s%s%s" % (name, annotation, assignment))
+
+        if field.is_initvar:
+            continue
+        elif field.default_factory is MISSING:
+            if field.init.value:
+                code.add_code_line(u"    %s.%s = %s" % (selfname, name, name))
+            elif assignment:
+                # not an argument to the function, but is still initialized
+                code.add_code_line(u"    %s.%s%s" % (selfname, name, assignment))
+        else:
+            ph_name = code.new_placeholder(fields, field.default_factory)
+            if field.init.value:
+                # close to:
+                # def __init__(self, name=_PLACEHOLDER_VALUE):
+                #     self.name = name_default_factory() if name is _PLACEHOLDER_VALUE else name
+                code.add_code_line(u"    %s.%s = %s() if %s is %s else %s" % (
+                    selfname, name, ph_name, name, default_factory_placeholder, name))
+            else:
+                # still need to use the default factory to initialize
+                code.add_code_line(u"    %s.%s = %s()" % (
+                    selfname, name, ph_name))
+
+    if node.scope.lookup("__post_init__"):
+        post_init_vars = ", ".join(name for name, field in fields.items()
+                                   if field.is_initvar)
+        code.add_code_line("    %s.__post_init__(%s)" % (selfname, post_init_vars))
+
+    if code.empty():
+        code.add_code_line("    pass")
+
+    args = u", ".join(args)
+    function_start_point.add_code_line(u"def __init__(%s):" % args)
+
+
+def generate_repr_code(code, repr, node, fields):
+    """
+    The core of the CPython implementation is just:
+    ['return self.__class__.__qualname__ + f"(' +
+                     ', '.join([f"{f.name}={{self.{f.name}!r}}"
+                                for f in fields]) +
+                     ')"'],
+
+    The only notable difference here is self.__class__.__qualname__ -> type(self).__name__
+    which is because Cython currently supports Python 2.
+
+    However, it also has some guards for recursive repr invocations. In the standard
+    library implementation they're done with a wrapper decorator that captures a set
+    (with the set keyed by id and thread). Here we create a set as a thread local
+    variable and key only by id.
+    """
+    if not repr or node.scope.lookup("__repr__"):
+        return
+
+    # The recursive guard is likely a little costly, so skip it if possible.
+    # is_gc_simple defines where it can contain recursive objects
+    needs_recursive_guard = False
+    for name in fields.keys():
+        entry = node.scope.lookup(name)
+        type_ = entry.type
+        if type_.is_memoryviewslice:
+            type_ = type_.dtype
+        if not type_.is_pyobject:
+            continue  # no GC
+        if not type_.is_gc_simple:
+            needs_recursive_guard = True
+            break
+
+    if needs_recursive_guard:
+        code.add_code_line("__pyx_recursive_repr_guard = __import__('threading').local()")
+        code.add_code_line("__pyx_recursive_repr_guard.running = set()")
+    code.add_code_line("def __repr__(self):")
+    if needs_recursive_guard:
+        code.add_code_line("    key = id(self)")
+        code.add_code_line("    guard_set = self.__pyx_recursive_repr_guard.running")
+        code.add_code_line("    if key in guard_set: return '...'")
+        code.add_code_line("    guard_set.add(key)")
+        code.add_code_line("    try:")
+    strs = [u"%s={self.%s!r}" % (name, name)
+            for name, field in fields.items()
+            if field.repr.value and not field.is_initvar]
+    format_string = u", ".join(strs)
+
+    code.add_code_line(u'        name = getattr(type(self), "__qualname__", type(self).__name__)')
+    code.add_code_line(u"        return f'{name}(%s)'" % format_string)
+    if needs_recursive_guard:
+        code.add_code_line("    finally:")
+        code.add_code_line("        guard_set.remove(key)")
+
+
+def generate_cmp_code(code, op, funcname, node, fields):
+    if node.scope.lookup_here(funcname):
+        return
+
+    names = [name for name, field in fields.items() if (field.compare.value and not field.is_initvar)]
+
+    code.add_code_lines([
+        "def %s(self, other):" % funcname,
+        "    if other.__class__ is not self.__class__:"
+        "        return NotImplemented",
+        #
+        "    cdef %s other_cast" % node.class_name,
+        "    other_cast = <%s>other" % node.class_name,
+    ])
+
+    # The Python implementation of dataclasses.py does a tuple comparison
+    # (roughly):
+    #  return self._attributes_to_tuple() {op} other._attributes_to_tuple()
+    #
+    # For the Cython implementation a tuple comparison isn't an option because
+    # not all attributes can be converted to Python objects and stored in a tuple
+    #
+    # TODO - better diagnostics of whether the types support comparison before
+    #    generating the code. Plus, do we want to convert C structs to dicts and
+    #    compare them that way (I think not, but it might be in demand)?
+    checks = []
+    op_without_equals = op.replace('=', '')
+
+    for name in names:
+        if op != '==':
+            # tuple comparison rules - early elements take precedence
+            code.add_code_line("    if self.%s %s other_cast.%s: return True" % (
+                name, op_without_equals, name))
+        code.add_code_line("    if self.%s != other_cast.%s: return False" % (
+            name, name))
+    if "=" in op:
+        code.add_code_line("    return True")  # "() == ()" is True
+    else:
+        code.add_code_line("    return False")
+
+
+def generate_eq_code(code, eq, node, fields):
+    if not eq:
+        return
+    generate_cmp_code(code, "==", "__eq__", node, fields)
+
+
+def generate_order_code(code, order, node, fields):
+    if not order:
+        return
+
+    for op, name in [("<", "__lt__"),
+                     ("<=", "__le__"),
+                     (">", "__gt__"),
+                     (">=", "__ge__")]:
+        generate_cmp_code(code, op, name, node, fields)
+
+
+def generate_hash_code(code, unsafe_hash, eq, frozen, node, fields):
+    """
+    Copied from CPython implementation - the intention is to follow this as far as
+    is possible:
+    #    +------------------- unsafe_hash= parameter
+    #    |       +----------- eq= parameter
+    #    |       |       +--- frozen= parameter
+    #    |       |       |
+    #    v       v       v    |        |        |
+    #                         |   no   |  yes   |  <--- class has explicitly defined __hash__
+    # +=======+=======+=======+========+========+
+    # | False | False | False |        |        | No __eq__, use the base class __hash__
+    # +-------+-------+-------+--------+--------+
+    # | False | False | True  |        |        | No __eq__, use the base class __hash__
+    # +-------+-------+-------+--------+--------+
+    # | False | True  | False | None   |        | <-- the default, not hashable
+    # +-------+-------+-------+--------+--------+
+    # | False | True  | True  | add    |        | Frozen, so hashable, allows override
+    # +-------+-------+-------+--------+--------+
+    # | True  | False | False | add    | raise  | Has no __eq__, but hashable
+    # +-------+-------+-------+--------+--------+
+    # | True  | False | True  | add    | raise  | Has no __eq__, but hashable
+    # +-------+-------+-------+--------+--------+
+    # | True  | True  | False | add    | raise  | Not frozen, but hashable
+    # +-------+-------+-------+--------+--------+
+    # | True  | True  | True  | add    | raise  | Frozen, so hashable
+    # +=======+=======+=======+========+========+
+    # For boxes that are blank, __hash__ is untouched and therefore
+    # inherited from the base class.  If the base is object, then
+    # id-based hashing is used.
+
+    The Python implementation creates a tuple of all the fields, then hashes them.
+    This implementation creates a tuple of all the hashes of all the fields and hashes that.
+    The reason for this slight difference is to avoid to-Python conversions for anything
+    that Cython knows how to hash directly (It doesn't look like this currently applies to
+    anything though...).
+    """
+
+    hash_entry = node.scope.lookup_here("__hash__")
+    if hash_entry:
+        # TODO ideally assignment of __hash__ to None shouldn't trigger this
+        # but difficult to get the right information here
+        if unsafe_hash:
+            # error message taken from CPython dataclasses module
+            error(node.pos, "Cannot overwrite attribute __hash__ in class %s" % node.class_name)
+        return
+
+    if not unsafe_hash:
+        if not eq:
+            return
+        if not frozen:
+            code.add_extra_statements([
+                Nodes.SingleAssignmentNode(
+                    node.pos,
+                    lhs=ExprNodes.NameNode(node.pos, name=EncodedString("__hash__")),
+                    rhs=ExprNodes.NoneNode(node.pos),
+                )
+            ])
+            return
+
+    names = [
+        name for name, field in fields.items()
+        if not field.is_initvar and (
+            field.compare.value if field.hash.value is None else field.hash.value)
+    ]
+
+    # make a tuple of the hashes
+    hash_tuple_items = u", ".join(u"self.%s" % name for name in names)
+    if hash_tuple_items:
+        hash_tuple_items += u","  # ensure that one arg form is a tuple
+
+    # if we're here we want to generate a hash
+    code.add_code_lines([
+        "def __hash__(self):",
+        "    return hash((%s))" % hash_tuple_items,
+    ])
+
+
+def get_field_type(pos, entry):
+    """
+    sets the .type attribute for a field
+
+    Returns the annotation if possible (since this is what the dataclasses
+    module does). If not (for example, attributes defined with cdef) then
+    it creates a string fallback.
+    """
+    if entry.annotation:
+        # Right now it doesn't look like cdef classes generate an
+        # __annotations__ dict, therefore it's safe to just return
+        # entry.annotation
+        # (TODO: remove .string if we ditch PEP563)
+        return entry.annotation.string
+        # If they do in future then we may need to look up into that
+        # to duplicating the node. The code below should do this:
+        #class_name_node = ExprNodes.NameNode(pos, name=entry.scope.name)
+        #annotations = ExprNodes.AttributeNode(
+        #    pos, obj=class_name_node,
+        #    attribute=EncodedString("__annotations__")
+        #)
+        #return ExprNodes.IndexNode(
+        #    pos, base=annotations,
+        #    index=ExprNodes.StringNode(pos, value=entry.name)
+        #)
+    else:
+        # it's slightly unclear what the best option is here - we could
+        # try to return PyType_Type. This case should only happen with
+        # attributes defined with cdef so Cython is free to make it's own
+        # decision
+        s = EncodedString(entry.type.declaration_code("", for_display=1))
+        return ExprNodes.StringNode(pos, value=s)
+
+
+class FieldRecordNode(ExprNodes.ExprNode):
+    """
+    __dataclass_fields__ contains a bunch of field objects recording how each field
+    of the dataclass was initialized (mainly corresponding to the arguments passed to
+    the "field" function). This node is used for the attributes of these field objects.
+
+    If possible, coerces `arg` to a Python object.
+    Otherwise, generates a sensible backup string.
+    """
+    subexprs = ['arg']
+
+    def __init__(self, pos, arg):
+        super(FieldRecordNode, self).__init__(pos, arg=arg)
+
+    def analyse_types(self, env):
+        self.arg.analyse_types(env)
+        self.type = self.arg.type
+        return self
+
+    def coerce_to_pyobject(self, env):
+        if self.arg.type.can_coerce_to_pyobject(env):
+            return self.arg.coerce_to_pyobject(env)
+        else:
+            # A string representation of the code that gave the field seems like a reasonable
+            # fallback. This'll mostly happen for "default" and "default_factory" where the
+            # type may be a C-type that can't be converted to Python.
+            return self._make_string()
+
+    def _make_string(self):
+        from .AutoDocTransforms import AnnotationWriter
+        writer = AnnotationWriter(description="Dataclass field")
+        string = writer.write(self.arg)
+        return ExprNodes.StringNode(self.pos, value=EncodedString(string))
+
+    def generate_evaluation_code(self, code):
+        return self.arg.generate_evaluation_code(code)
+
+
+def _set_up_dataclass_fields(node, fields, dataclass_module):
+    # For defaults and default_factories containing things like lambda,
+    # they're already declared in the class scope, and it creates a big
+    # problem if multiple copies are floating around in both the __init__
+    # function, and in the __dataclass_fields__ structure.
+    # Therefore, create module-level constants holding these values and
+    # pass those around instead
+    #
+    # If possible we use the `Field` class defined in the standard library
+    # module so that the information stored here is as close to a regular
+    # dataclass as is possible.
+    variables_assignment_stats = []
+    for name, field in fields.items():
+        if field.private:
+            continue  # doesn't appear in the public interface
+        for attrname in [ "default", "default_factory" ]:
+            field_default = getattr(field, attrname)
+            if field_default is MISSING or field_default.is_literal or field_default.is_name:
+                # some simple cases where we don't need to set up
+                # the variable as a module-level constant
+                continue
+            global_scope = node.scope.global_scope()
+            module_field_name = global_scope.mangle(
+                global_scope.mangle(Naming.dataclass_field_default_cname, node.class_name),
+                name)
+            # create an entry in the global scope for this variable to live
+            field_node = ExprNodes.NameNode(field_default.pos, name=EncodedString(module_field_name))
+            field_node.entry = global_scope.declare_var(
+                field_node.name, type=field_default.type or PyrexTypes.unspecified_type,
+                pos=field_default.pos, cname=field_node.name, is_cdef=True,
+                # TODO: do we need to set 'pytyping_modifiers' here?
+            )
+            # replace the field so that future users just receive the namenode
+            setattr(field, attrname, field_node)
+
+            variables_assignment_stats.append(
+                Nodes.SingleAssignmentNode(field_default.pos, lhs=field_node, rhs=field_default))
+
+    placeholders = {}
+    field_func = ExprNodes.AttributeNode(node.pos, obj=dataclass_module,
+                                         attribute=EncodedString("field"))
+    dc_fields = ExprNodes.DictNode(node.pos, key_value_pairs=[])
+    dc_fields_namevalue_assignments = []
+
+    for name, field in fields.items():
+        if field.private:
+            continue  # doesn't appear in the public interface
+        type_placeholder_name = "PLACEHOLDER_%s" % name
+        placeholders[type_placeholder_name] = get_field_type(
+            node.pos, node.scope.entries[name]
+        )
+
+        # defining these make the fields introspect more like a Python dataclass
+        field_type_placeholder_name = "PLACEHOLDER_FIELD_TYPE_%s" % name
+        if field.is_initvar:
+            placeholders[field_type_placeholder_name] = ExprNodes.AttributeNode(
+                node.pos, obj=dataclass_module,
+                attribute=EncodedString("_FIELD_INITVAR")
+            )
+        elif field.is_classvar:
+            # TODO - currently this isn't triggered
+            placeholders[field_type_placeholder_name] = ExprNodes.AttributeNode(
+                node.pos, obj=dataclass_module,
+                attribute=EncodedString("_FIELD_CLASSVAR")
+            )
+        else:
+            placeholders[field_type_placeholder_name] = ExprNodes.AttributeNode(
+                node.pos, obj=dataclass_module,
+                attribute=EncodedString("_FIELD")
+            )
+
+        dc_field_keywords = ExprNodes.DictNode.from_pairs(
+            node.pos,
+            [(ExprNodes.IdentifierStringNode(node.pos, value=EncodedString(k)),
+               FieldRecordNode(node.pos, arg=v))
+              for k, v in field.iterate_record_node_arguments()]
+
+        )
+        dc_field_call = make_dataclass_call_helper(
+            node.pos, field_func, dc_field_keywords
+        )
+        dc_fields.key_value_pairs.append(
+            ExprNodes.DictItemNode(
+                node.pos,
+                key=ExprNodes.IdentifierStringNode(node.pos, value=EncodedString(name)),
+                value=dc_field_call))
+        dc_fields_namevalue_assignments.append(
+            dedent(u"""\
+                __dataclass_fields__[{0!r}].name = {0!r}
+                __dataclass_fields__[{0!r}].type = {1}
+                __dataclass_fields__[{0!r}]._field_type = {2}
+            """).format(name, type_placeholder_name, field_type_placeholder_name))
+
+    dataclass_fields_assignment = \
+        Nodes.SingleAssignmentNode(node.pos,
+                        lhs = ExprNodes.NameNode(node.pos,
+                                        name=EncodedString("__dataclass_fields__")),
+                        rhs = dc_fields)
+
+    dc_fields_namevalue_assignments = u"\n".join(dc_fields_namevalue_assignments)
+    dc_fields_namevalue_assignments = TreeFragment(dc_fields_namevalue_assignments,
+                                                   level="c_class",
+                                                   pipeline=[NormalizeTree(None)])
+    dc_fields_namevalue_assignments = dc_fields_namevalue_assignments.substitute(placeholders)
+
+    return (variables_assignment_stats
+            + [dataclass_fields_assignment]
+            + dc_fields_namevalue_assignments.stats)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/DebugFlags.py

@@ -0,0 +1,21 @@
+# Can be enabled at the command line with --debug-xxx.
+
+debug_disposal_code = 0
+debug_temp_alloc = 0
+debug_coercion = 0
+
+# Write comments into the C code that show where temporary variables
+# are allocated and released.
+debug_temp_code_comments = 0
+
+# Write a call trace of the code generation phase into the C code.
+debug_trace_code_generation = 0
+
+# Do not replace exceptions with user-friendly error messages.
+debug_no_exception_intercept = 0
+
+# Print a message each time a new stage in the pipeline is entered.
+debug_verbose_pipeline = 0
+
+# Raise an exception when an error is encountered.
+debug_exception_on_error = 0

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Errors.py

@@ -0,0 +1,300 @@
+#
+#   Errors
+#
+
+from __future__ import absolute_import
+
+try:
+    from __builtin__ import basestring as any_string_type
+except ImportError:
+    any_string_type = (bytes, str)
+
+import sys
+from contextlib import contextmanager
+
+try:
+    from threading import local as _threadlocal
+except ImportError:
+    class _threadlocal(object): pass
+
+threadlocal = _threadlocal()
+
+from ..Utils import open_new_file
+from . import DebugFlags
+from . import Options
+
+
+class PyrexError(Exception):
+    pass
+
+
+class PyrexWarning(Exception):
+    pass
+
+class CannotSpecialize(PyrexError):
+    pass
+
+def context(position):
+    source = position[0]
+    assert not (isinstance(source, any_string_type)), (
+        "Please replace filename strings with Scanning.FileSourceDescriptor instances %r" % source)
+    try:
+        F = source.get_lines()
+    except UnicodeDecodeError:
+        # file has an encoding problem
+        s = u"[unprintable code]\n"
+    else:
+        s = u''.join(F[max(0, position[1]-6):position[1]])
+        s = u'...\n%s%s^\n' % (s, u' '*(position[2]))
+    s = u'%s\n%s%s\n' % (u'-'*60, s, u'-'*60)
+    return s
+
+def format_position(position):
+    if position:
+        return u"%s:%d:%d: " % (position[0].get_error_description(),
+                                position[1], position[2])
+    return u''
+
+def format_error(message, position):
+    if position:
+        pos_str = format_position(position)
+        cont = context(position)
+        message = u'\nError compiling Cython file:\n%s\n%s%s' % (cont, pos_str, message or u'')
+    return message
+
+class CompileError(PyrexError):
+
+    def __init__(self, position = None, message = u""):
+        self.position = position
+        self.message_only = message
+        self.formatted_message = format_error(message, position)
+        self.reported = False
+        Exception.__init__(self, self.formatted_message)
+        # Python Exception subclass pickling is broken,
+        # see https://bugs.python.org/issue1692335
+        self.args = (position, message)
+
+    def __str__(self):
+        return self.formatted_message
+
+class CompileWarning(PyrexWarning):
+
+    def __init__(self, position = None, message = ""):
+        self.position = position
+        Exception.__init__(self, format_position(position) + message)
+
+class InternalError(Exception):
+    # If this is ever raised, there is a bug in the compiler.
+
+    def __init__(self, message):
+        self.message_only = message
+        Exception.__init__(self, u"Internal compiler error: %s"
+            % message)
+
+class AbortError(Exception):
+    # Throw this to stop the compilation immediately.
+
+    def __init__(self, message):
+        self.message_only = message
+        Exception.__init__(self, u"Abort error: %s" % message)
+
+class CompilerCrash(CompileError):
+    # raised when an unexpected exception occurs in a transform
+    def __init__(self, pos, context, message, cause, stacktrace=None):
+        if message:
+            message = u'\n' + message
+        else:
+            message = u'\n'
+        self.message_only = message
+        if context:
+            message = u"Compiler crash in %s%s" % (context, message)
+        if stacktrace:
+            import traceback
+            message += (
+                u'\n\nCompiler crash traceback from this point on:\n' +
+                u''.join(traceback.format_tb(stacktrace)))
+        if cause:
+            if not stacktrace:
+                message += u'\n'
+            message += u'%s: %s' % (cause.__class__.__name__, cause)
+        CompileError.__init__(self, pos, message)
+        # Python Exception subclass pickling is broken,
+        # see https://bugs.python.org/issue1692335
+        self.args = (pos, context, message, cause, stacktrace)
+
+class NoElementTreeInstalledException(PyrexError):
+    """raised when the user enabled options.gdb_debug but no ElementTree
+    implementation was found
+    """
+
+def open_listing_file(path, echo_to_stderr=True):
+    # Begin a new error listing. If path is None, no file
+    # is opened, the error counter is just reset.
+    if path is not None:
+        threadlocal.cython_errors_listing_file = open_new_file(path)
+    else:
+        threadlocal.cython_errors_listing_file = None
+    if echo_to_stderr:
+        threadlocal.cython_errors_echo_file = sys.stderr
+    else:
+        threadlocal.cython_errors_echo_file = None
+    threadlocal.cython_errors_count = 0
+
+def close_listing_file():
+    if threadlocal.cython_errors_listing_file:
+        threadlocal.cython_errors_listing_file.close()
+        threadlocal.cython_errors_listing_file = None
+
+def report_error(err, use_stack=True):
+    error_stack = threadlocal.cython_errors_stack
+    if error_stack and use_stack:
+        error_stack[-1].append(err)
+    else:
+        # See Main.py for why dual reporting occurs. Quick fix for now.
+        if err.reported: return
+        err.reported = True
+        try: line = u"%s\n" % err
+        except UnicodeEncodeError:
+            # Python <= 2.5 does this for non-ASCII Unicode exceptions
+            line = format_error(getattr(err, 'message_only', "[unprintable exception message]"),
+                                getattr(err, 'position', None)) + u'\n'
+        listing_file = threadlocal.cython_errors_listing_file
+        if listing_file:
+            try: listing_file.write(line)
+            except UnicodeEncodeError:
+                listing_file.write(line.encode('ASCII', 'replace'))
+        echo_file = threadlocal.cython_errors_echo_file
+        if echo_file:
+            try: echo_file.write(line)
+            except UnicodeEncodeError:
+                echo_file.write(line.encode('ASCII', 'replace'))
+        threadlocal.cython_errors_count += 1
+        if Options.fast_fail:
+            raise AbortError("fatal errors")
+
+def error(position, message):
+    #print("Errors.error:", repr(position), repr(message)) ###
+    if position is None:
+        raise InternalError(message)
+    err = CompileError(position, message)
+    if DebugFlags.debug_exception_on_error: raise Exception(err)  # debug
+    report_error(err)
+    return err
+
+
+LEVEL = 1  # warn about all errors level 1 or higher
+
+def _write_file_encode(file, line):
+    try:
+        file.write(line)
+    except UnicodeEncodeError:
+        file.write(line.encode('ascii', 'replace'))
+
+
+def performance_hint(position, message, env):
+    if not env.directives['show_performance_hints']:
+        return
+    warn = CompileWarning(position, message)
+    line = "performance hint: %s\n" % warn
+    listing_file = threadlocal.cython_errors_listing_file
+    if listing_file:
+        _write_file_encode(listing_file, line)
+    echo_file = threadlocal.cython_errors_echo_file
+    if echo_file:
+        _write_file_encode(echo_file, line)
+    return warn
+
+
+def message(position, message, level=1):
+    if level < LEVEL:
+        return
+    warn = CompileWarning(position, message)
+    line = u"note: %s\n" % warn
+    listing_file = threadlocal.cython_errors_listing_file
+    if listing_file:
+        _write_file_encode(listing_file, line)
+    echo_file = threadlocal.cython_errors_echo_file
+    if echo_file:
+        _write_file_encode(echo_file, line)
+    return warn
+
+
+def warning(position, message, level=0):
+    if level < LEVEL:
+        return
+    if Options.warning_errors and position:
+        return error(position, message)
+    warn = CompileWarning(position, message)
+    line = u"warning: %s\n" % warn
+    listing_file = threadlocal.cython_errors_listing_file
+    if listing_file:
+        _write_file_encode(listing_file, line)
+    echo_file = threadlocal.cython_errors_echo_file
+    if echo_file:
+        _write_file_encode(echo_file, line)
+    return warn
+
+
+def warn_once(position, message, level=0):
+    if level < LEVEL:
+        return
+    warn_once_seen = threadlocal.cython_errors_warn_once_seen
+    if message in warn_once_seen:
+        return
+    warn = CompileWarning(position, message)
+    line = u"warning: %s\n" % warn
+    listing_file = threadlocal.cython_errors_listing_file
+    if listing_file:
+        _write_file_encode(listing_file, line)
+    echo_file = threadlocal.cython_errors_echo_file
+    if echo_file:
+        _write_file_encode(echo_file, line)
+    warn_once_seen.add(message)
+    return warn
+
+
+# These functions can be used to momentarily suppress errors.
+
+def hold_errors():
+    errors = []
+    threadlocal.cython_errors_stack.append(errors)
+    return errors
+
+
+def release_errors(ignore=False):
+    held_errors = threadlocal.cython_errors_stack.pop()
+    if not ignore:
+        for err in held_errors:
+            report_error(err)
+
+
+def held_errors():
+    return threadlocal.cython_errors_stack[-1]
+
+
+# same as context manager:
+
+@contextmanager
+def local_errors(ignore=False):
+    errors = hold_errors()
+    try:
+        yield errors
+    finally:
+        release_errors(ignore=ignore)
+
+
+# Keep all global state in thread local storage to support parallel cythonisation in distutils.
+
+def init_thread():
+    threadlocal.cython_errors_count = 0
+    threadlocal.cython_errors_listing_file = None
+    threadlocal.cython_errors_echo_file = None
+    threadlocal.cython_errors_warn_once_seen = set()
+    threadlocal.cython_errors_stack = []
+
+def reset():
+    threadlocal.cython_errors_warn_once_seen.clear()
+    del threadlocal.cython_errors_stack[:]
+
+def get_errors_count():
+    return threadlocal.cython_errors_count

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/FlowControl.pxd

@@ -0,0 +1,111 @@
+# cython: language_level=3
+
+cimport cython
+
+from .Visitor cimport CythonTransform, TreeVisitor
+
+cdef class ControlBlock:
+    cdef public set children
+    cdef public set parents
+    cdef public set positions
+    cdef public list stats
+    cdef public dict gen
+    cdef public set bounded
+
+    # Big integer bitsets
+    cdef public object i_input
+    cdef public object i_output
+    cdef public object i_gen
+    cdef public object i_kill
+    cdef public object i_state
+
+    cpdef bint empty(self)
+    cpdef detach(self)
+    cpdef add_child(self, block)
+
+cdef class ExitBlock(ControlBlock):
+    cpdef bint empty(self)
+
+cdef class NameAssignment:
+    cdef public bint is_arg
+    cdef public bint is_deletion
+    cdef public object lhs
+    cdef public object rhs
+    cdef public object entry
+    cdef public object pos
+    cdef public set refs
+    cdef public object bit
+    cdef public object inferred_type
+    cdef public object rhs_scope
+
+cdef class AssignmentList:
+    cdef public object bit
+    cdef public object mask
+    cdef public list stats
+
+cdef class AssignmentCollector(TreeVisitor):
+    cdef list assignments
+
+@cython.final
+cdef class ControlFlow:
+    cdef public set blocks
+    cdef public set entries
+    cdef public list loops
+    cdef public list exceptions
+
+    cdef public ControlBlock entry_point
+    cdef public ExitBlock exit_point
+    cdef public ControlBlock block
+
+    cdef public dict assmts
+
+    cdef public Py_ssize_t in_try_block
+
+    cpdef newblock(self, ControlBlock parent=*)
+    cpdef nextblock(self, ControlBlock parent=*)
+    cpdef bint is_tracked(self, entry)
+    cpdef bint is_statically_assigned(self, entry)
+    cpdef mark_position(self, node)
+    cpdef mark_assignment(self, lhs, rhs, entry, rhs_scope=*)
+    cpdef mark_argument(self, lhs, rhs, entry)
+    cpdef mark_deletion(self, node, entry)
+    cpdef mark_reference(self, node, entry)
+
+    @cython.locals(block=ControlBlock, parent=ControlBlock, unreachable=set)
+    cpdef normalize(self)
+
+    @cython.locals(bit=object, assmts=AssignmentList, block=ControlBlock)
+    cpdef initialize(self)
+
+    @cython.locals(assmts=AssignmentList, assmt=NameAssignment)
+    cpdef set map_one(self, istate, entry)
+
+    @cython.locals(block=ControlBlock, parent=ControlBlock)
+    cdef reaching_definitions(self)
+
+cdef class Uninitialized:
+    pass
+
+cdef class Unknown:
+    pass
+
+cdef class MessageCollection:
+    cdef set messages
+
+@cython.locals(dirty=bint, block=ControlBlock, parent=ControlBlock,
+               assmt=NameAssignment)
+cdef check_definitions(ControlFlow flow, dict compiler_directives)
+
+@cython.final
+cdef class ControlFlowAnalysis(CythonTransform):
+    cdef object gv_ctx
+    cdef object constant_folder
+    cdef set reductions
+    cdef list stack  # a stack of (env, flow) tuples
+    cdef object env
+    cdef ControlFlow flow
+    cdef object object_expr
+    cdef bint in_inplace_assignment
+
+    cpdef mark_assignment(self, lhs, rhs=*, rhs_scope=*)
+    cpdef mark_position(self, node)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/FlowControl.py

@@ -0,0 +1,1383 @@
+# cython: language_level=3str
+# cython: auto_pickle=True
+
+from __future__ import absolute_import
+
+import cython
+cython.declare(PyrexTypes=object, ExprNodes=object, Nodes=object, Builtin=object,
+               Options=object, TreeVisitor=object, CythonTransform=object,
+               InternalError=object, error=object, warning=object,
+               fake_rhs_expr=object, TypedExprNode=object)
+
+from . import Builtin
+from . import ExprNodes
+from . import Nodes
+from . import Options
+from . import PyrexTypes
+
+from .Visitor import TreeVisitor, CythonTransform
+from .Errors import error, warning, InternalError
+
+
+class TypedExprNode(ExprNodes.ExprNode):
+    # Used for declaring assignments of a specified type without a known entry.
+    def __init__(self, type, may_be_none=None, pos=None):
+        super(TypedExprNode, self).__init__(pos)
+        self.type = type
+        self._may_be_none = may_be_none
+
+    def may_be_none(self):
+        return self._may_be_none != False
+
+# Fake rhs to silence "unused variable" warning
+fake_rhs_expr = TypedExprNode(PyrexTypes.unspecified_type)
+
+
+class ControlBlock(object):
+    """Control flow graph node. Sequence of assignments and name references.
+
+       children  set of children nodes
+       parents   set of parent nodes
+       positions set of position markers
+
+       stats     list of block statements
+       gen       dict of assignments generated by this block
+       bounded   set  of entries that are definitely bounded in this block
+
+       Example:
+
+        a = 1
+        b = a + c # 'c' is already bounded or exception here
+
+        stats = [Assignment(a), NameReference(a), NameReference(c),
+                     Assignment(b)]
+        gen = {Entry(a): Assignment(a), Entry(b): Assignment(b)}
+        bounded = {Entry(a), Entry(c)}
+
+    """
+
+    def __init__(self):
+        self.children = set()
+        self.parents = set()
+        self.positions = set()
+
+        self.stats = []
+        self.gen = {}
+        self.bounded = set()
+
+        self.i_input = 0
+        self.i_output = 0
+        self.i_gen = 0
+        self.i_kill = 0
+        self.i_state = 0
+
+    def empty(self):
+        return (not self.stats and not self.positions)
+
+    def detach(self):
+        """Detach block from parents and children."""
+        for child in self.children:
+            child.parents.remove(self)
+        for parent in self.parents:
+            parent.children.remove(self)
+        self.parents.clear()
+        self.children.clear()
+
+    def add_child(self, block):
+        self.children.add(block)
+        block.parents.add(self)
+
+
+class ExitBlock(ControlBlock):
+    """Non-empty exit point block."""
+
+    def empty(self):
+        return False
+
+
+class AssignmentList(object):
+    def __init__(self):
+        self.stats = []
+
+
+class ControlFlow(object):
+    """Control-flow graph.
+
+       entry_point ControlBlock entry point for this graph
+       exit_point  ControlBlock normal exit point
+       block       ControlBlock current block
+       blocks      set    children nodes
+       entries     set    tracked entries
+       loops       list   stack for loop descriptors
+       exceptions  list   stack for exception descriptors
+       in_try_block  int  track if we're in a try...except or try...finally block
+    """
+
+    def __init__(self):
+        self.blocks = set()
+        self.entries = set()
+        self.loops = []
+        self.exceptions = []
+
+        self.entry_point = ControlBlock()
+        self.exit_point = ExitBlock()
+        self.blocks.add(self.exit_point)
+        self.block = self.entry_point
+        self.in_try_block = 0
+
+    def newblock(self, parent=None):
+        """Create floating block linked to `parent` if given.
+
+           NOTE: Block is NOT added to self.blocks
+        """
+        block = ControlBlock()
+        self.blocks.add(block)
+        if parent:
+            parent.add_child(block)
+        return block
+
+    def nextblock(self, parent=None):
+        """Create block children block linked to current or `parent` if given.
+
+           NOTE: Block is added to self.blocks
+        """
+        block = ControlBlock()
+        self.blocks.add(block)
+        if parent:
+            parent.add_child(block)
+        elif self.block:
+            self.block.add_child(block)
+        self.block = block
+        return self.block
+
+    def is_tracked(self, entry):
+        if entry.is_anonymous:
+            return False
+        return (entry.is_local or entry.is_pyclass_attr or entry.is_arg or
+                entry.from_closure or entry.in_closure or
+                entry.error_on_uninitialized)
+
+    def is_statically_assigned(self, entry):
+        if (entry.is_local and entry.is_variable and
+                (entry.type.is_struct_or_union or
+                 entry.type.is_complex or
+                 entry.type.is_array or
+                 (entry.type.is_cpp_class and not entry.is_cpp_optional))):
+            # stack allocated structured variable => never uninitialised
+            return True
+        return False
+
+    def mark_position(self, node):
+        """Mark position, will be used to draw graph nodes."""
+        if self.block:
+            self.block.positions.add(node.pos[:2])
+
+    def mark_assignment(self, lhs, rhs, entry, rhs_scope=None):
+        if self.block and self.is_tracked(entry):
+            assignment = NameAssignment(lhs, rhs, entry, rhs_scope=rhs_scope)
+            self.block.stats.append(assignment)
+            self.block.gen[entry] = assignment
+            self.entries.add(entry)
+
+    def mark_argument(self, lhs, rhs, entry):
+        if self.block and self.is_tracked(entry):
+            assignment = Argument(lhs, rhs, entry)
+            self.block.stats.append(assignment)
+            self.block.gen[entry] = assignment
+            self.entries.add(entry)
+
+    def mark_deletion(self, node, entry):
+        if self.block and self.is_tracked(entry):
+            assignment = NameDeletion(node, entry)
+            self.block.stats.append(assignment)
+            self.block.gen[entry] = Uninitialized
+            self.entries.add(entry)
+
+    def mark_reference(self, node, entry):
+        if self.block and self.is_tracked(entry):
+            self.block.stats.append(NameReference(node, entry))
+            ## XXX: We don't track expression evaluation order so we can't use
+            ## XXX: successful reference as initialization sign.
+            ## # Local variable is definitely bound after this reference
+            ## if not node.allow_null:
+            ##     self.block.bounded.add(entry)
+            self.entries.add(entry)
+
+    def normalize(self):
+        """Delete unreachable and orphan blocks."""
+        queue = {self.entry_point}
+        visited = set()
+        while queue:
+            root = queue.pop()
+            visited.add(root)
+            for child in root.children:
+                if child not in visited:
+                    queue.add(child)
+        unreachable = self.blocks - visited
+        for block in unreachable:
+            block.detach()
+        visited.remove(self.entry_point)
+        for block in visited:
+            if block.empty():
+                for parent in block.parents:  # Re-parent
+                    for child in block.children:
+                        parent.add_child(child)
+                block.detach()
+                unreachable.add(block)
+        self.blocks -= unreachable
+
+    def initialize(self):
+        """Set initial state, map assignments to bits."""
+        self.assmts = {}
+
+        bit = 1
+        for entry in self.entries:
+            assmts = AssignmentList()
+            assmts.mask = assmts.bit = bit
+            self.assmts[entry] = assmts
+            bit <<= 1
+
+        for block in self.blocks:
+            for stat in block.stats:
+                if isinstance(stat, NameAssignment):
+                    stat.bit = bit
+                    assmts = self.assmts[stat.entry]
+                    assmts.stats.append(stat)
+                    assmts.mask |= bit
+                    bit <<= 1
+
+        for block in self.blocks:
+            for entry, stat in block.gen.items():
+                assmts = self.assmts[entry]
+                if stat is Uninitialized:
+                    block.i_gen |= assmts.bit
+                else:
+                    block.i_gen |= stat.bit
+                block.i_kill |= assmts.mask
+            block.i_output = block.i_gen
+            for entry in block.bounded:
+                block.i_kill |= self.assmts[entry].bit
+
+        for assmts in self.assmts.values():
+            self.entry_point.i_gen |= assmts.bit
+        self.entry_point.i_output = self.entry_point.i_gen
+
+    def map_one(self, istate, entry):
+        ret = set()
+        assmts = self.assmts[entry]
+        if istate & assmts.bit:
+            if self.is_statically_assigned(entry):
+                ret.add(StaticAssignment(entry))
+            elif entry.from_closure:
+                ret.add(Unknown)
+            else:
+                ret.add(Uninitialized)
+        for assmt in assmts.stats:
+            if istate & assmt.bit:
+                ret.add(assmt)
+        return ret
+
+    def reaching_definitions(self):
+        """Per-block reaching definitions analysis."""
+        dirty = True
+        while dirty:
+            dirty = False
+            for block in self.blocks:
+                i_input = 0
+                for parent in block.parents:
+                    i_input |= parent.i_output
+                i_output = (i_input & ~block.i_kill) | block.i_gen
+                if i_output != block.i_output:
+                    dirty = True
+                block.i_input = i_input
+                block.i_output = i_output
+
+
+class LoopDescr(object):
+    def __init__(self, next_block, loop_block):
+        self.next_block = next_block
+        self.loop_block = loop_block
+        self.exceptions = []
+
+
+class ExceptionDescr(object):
+    """Exception handling helper.
+
+    entry_point   ControlBlock Exception handling entry point
+    finally_enter ControlBlock Normal finally clause entry point
+    finally_exit  ControlBlock Normal finally clause exit point
+    """
+
+    def __init__(self, entry_point, finally_enter=None, finally_exit=None):
+        self.entry_point = entry_point
+        self.finally_enter = finally_enter
+        self.finally_exit = finally_exit
+
+
+class NameAssignment(object):
+    def __init__(self, lhs, rhs, entry, rhs_scope=None):
+        if lhs.cf_state is None:
+            lhs.cf_state = set()
+        self.lhs = lhs
+        self.rhs = rhs
+        self.entry = entry
+        self.pos = lhs.pos
+        self.refs = set()
+        self.is_arg = False
+        self.is_deletion = False
+        self.inferred_type = None
+        # For generator expression targets, the rhs can have a different scope than the lhs.
+        self.rhs_scope = rhs_scope
+
+    def __repr__(self):
+        return '%s(entry=%r)' % (self.__class__.__name__, self.entry)
+
+    def infer_type(self):
+        self.inferred_type = self.rhs.infer_type(self.rhs_scope or self.entry.scope)
+        return self.inferred_type
+
+    def type_dependencies(self):
+        return self.rhs.type_dependencies(self.rhs_scope or self.entry.scope)
+
+    @property
+    def type(self):
+        if not self.entry.type.is_unspecified:
+            return self.entry.type
+        return self.inferred_type
+
+
+class StaticAssignment(NameAssignment):
+    """Initialised at declaration time, e.g. stack allocation."""
+    def __init__(self, entry):
+        if not entry.type.is_pyobject:
+            may_be_none = False
+        else:
+            may_be_none = None  # unknown
+        lhs = TypedExprNode(
+            entry.type, may_be_none=may_be_none, pos=entry.pos)
+        super(StaticAssignment, self).__init__(lhs, lhs, entry)
+
+    def infer_type(self):
+        return self.entry.type
+
+    def type_dependencies(self):
+        return ()
+
+
+class Argument(NameAssignment):
+    def __init__(self, lhs, rhs, entry):
+        NameAssignment.__init__(self, lhs, rhs, entry)
+        self.is_arg = True
+
+
+class NameDeletion(NameAssignment):
+    def __init__(self, lhs, entry):
+        NameAssignment.__init__(self, lhs, lhs, entry)
+        self.is_deletion = True
+
+    def infer_type(self):
+        inferred_type = self.rhs.infer_type(self.entry.scope)
+        if (not inferred_type.is_pyobject
+                and inferred_type.can_coerce_to_pyobject(self.entry.scope)):
+            return PyrexTypes.py_object_type
+        self.inferred_type = inferred_type
+        return inferred_type
+
+
+class Uninitialized(object):
+    """Definitely not initialised yet."""
+
+
+class Unknown(object):
+    """Coming from outer closure, might be initialised or not."""
+
+
+class NameReference(object):
+    def __init__(self, node, entry):
+        if node.cf_state is None:
+            node.cf_state = set()
+        self.node = node
+        self.entry = entry
+        self.pos = node.pos
+
+    def __repr__(self):
+        return '%s(entry=%r)' % (self.__class__.__name__, self.entry)
+
+
+class ControlFlowState(list):
+    # Keeps track of Node's entry assignments
+    #
+    # cf_is_null        [boolean] It is uninitialized
+    # cf_maybe_null     [boolean] May be uninitialized
+    # is_single         [boolean] Has only one assignment at this point
+
+    cf_maybe_null = False
+    cf_is_null = False
+    is_single = False
+
+    def __init__(self, state):
+        if Uninitialized in state:
+            state.discard(Uninitialized)
+            self.cf_maybe_null = True
+            if not state:
+                self.cf_is_null = True
+        elif Unknown in state:
+            state.discard(Unknown)
+            self.cf_maybe_null = True
+        else:
+            if len(state) == 1:
+                self.is_single = True
+        # XXX: Remove fake_rhs_expr
+        super(ControlFlowState, self).__init__(
+            [i for i in state if i.rhs is not fake_rhs_expr])
+
+    def one(self):
+        return self[0]
+
+
+class GVContext(object):
+    """Graphviz subgraph object."""
+
+    def __init__(self):
+        self.blockids = {}
+        self.nextid = 0
+        self.children = []
+        self.sources = {}
+
+    def add(self, child):
+        self.children.append(child)
+
+    def nodeid(self, block):
+        if block not in self.blockids:
+            self.blockids[block] = 'block%d' % self.nextid
+            self.nextid += 1
+        return self.blockids[block]
+
+    def extract_sources(self, block):
+        if not block.positions:
+            return ''
+        start = min(block.positions)
+        stop = max(block.positions)
+        srcdescr = start[0]
+        if srcdescr not in self.sources:
+            self.sources[srcdescr] = list(srcdescr.get_lines())
+        lines = self.sources[srcdescr]
+        return '\\n'.join([l.strip() for l in lines[start[1] - 1:stop[1]]])
+
+    def render(self, fp, name, annotate_defs=False):
+        """Render graphviz dot graph"""
+        fp.write('digraph %s {\n' % name)
+        fp.write(' node [shape=box];\n')
+        for child in self.children:
+            child.render(fp, self, annotate_defs)
+        fp.write('}\n')
+
+    def escape(self, text):
+        return text.replace('"', '\\"').replace('\n', '\\n')
+
+
+class GV(object):
+    """Graphviz DOT renderer."""
+
+    def __init__(self, name, flow):
+        self.name = name
+        self.flow = flow
+
+    def render(self, fp, ctx, annotate_defs=False):
+        fp.write(' subgraph %s {\n' % self.name)
+        for block in self.flow.blocks:
+            label = ctx.extract_sources(block)
+            if annotate_defs:
+                for stat in block.stats:
+                    if isinstance(stat, NameAssignment):
+                        label += '\n %s [%s %s]' % (
+                            stat.entry.name, 'deletion' if stat.is_deletion else 'definition', stat.pos[1])
+                    elif isinstance(stat, NameReference):
+                        if stat.entry:
+                            label += '\n %s [reference %s]' % (stat.entry.name, stat.pos[1])
+            if not label:
+                label = 'empty'
+            pid = ctx.nodeid(block)
+            fp.write('  %s [label="%s"];\n' % (pid, ctx.escape(label)))
+        for block in self.flow.blocks:
+            pid = ctx.nodeid(block)
+            for child in block.children:
+                fp.write('  %s -> %s;\n' % (pid, ctx.nodeid(child)))
+        fp.write(' }\n')
+
+
+class MessageCollection(object):
+    """Collect error/warnings messages first then sort"""
+    def __init__(self):
+        self.messages = set()
+
+    def error(self, pos, message):
+        self.messages.add((pos, True, message))
+
+    def warning(self, pos, message):
+        self.messages.add((pos, False, message))
+
+    def report(self):
+        for pos, is_error, message in sorted(self.messages):
+            if is_error:
+                error(pos, message)
+            else:
+                warning(pos, message, 2)
+
+
+def check_definitions(flow, compiler_directives):
+    flow.initialize()
+    flow.reaching_definitions()
+
+    # Track down state
+    assignments = set()
+    # Node to entry map
+    references = {}
+    assmt_nodes = set()
+
+    for block in flow.blocks:
+        i_state = block.i_input
+        for stat in block.stats:
+            i_assmts = flow.assmts[stat.entry]
+            state = flow.map_one(i_state, stat.entry)
+            if isinstance(stat, NameAssignment):
+                stat.lhs.cf_state.update(state)
+                assmt_nodes.add(stat.lhs)
+                i_state = i_state & ~i_assmts.mask
+                if stat.is_deletion:
+                    i_state |= i_assmts.bit
+                else:
+                    i_state |= stat.bit
+                assignments.add(stat)
+                if stat.rhs is not fake_rhs_expr:
+                    stat.entry.cf_assignments.append(stat)
+            elif isinstance(stat, NameReference):
+                references[stat.node] = stat.entry
+                stat.entry.cf_references.append(stat)
+                stat.node.cf_state.update(state)
+                ## if not stat.node.allow_null:
+                ##     i_state &= ~i_assmts.bit
+                ## # after successful read, the state is known to be initialised
+                state.discard(Uninitialized)
+                state.discard(Unknown)
+                for assmt in state:
+                    assmt.refs.add(stat)
+
+    # Check variable usage
+    warn_maybe_uninitialized = compiler_directives['warn.maybe_uninitialized']
+    warn_unused_result = compiler_directives['warn.unused_result']
+    warn_unused = compiler_directives['warn.unused']
+    warn_unused_arg = compiler_directives['warn.unused_arg']
+
+    messages = MessageCollection()
+
+    # assignment hints
+    for node in assmt_nodes:
+        if Uninitialized in node.cf_state:
+            node.cf_maybe_null = True
+            if len(node.cf_state) == 1:
+                node.cf_is_null = True
+            else:
+                node.cf_is_null = False
+        elif Unknown in node.cf_state:
+            node.cf_maybe_null = True
+        else:
+            node.cf_is_null = False
+            node.cf_maybe_null = False
+
+    # Find uninitialized references and cf-hints
+    for node, entry in references.items():
+        if Uninitialized in node.cf_state:
+            node.cf_maybe_null = True
+            if (not entry.from_closure and len(node.cf_state) == 1
+                    and entry.name not in entry.scope.scope_predefined_names):
+                node.cf_is_null = True
+            if (node.allow_null or entry.from_closure
+                    or entry.is_pyclass_attr or entry.type.is_error):
+                pass  # Can be uninitialized here
+            elif node.cf_is_null and not entry.in_closure:
+                if entry.error_on_uninitialized or (
+                        Options.error_on_uninitialized and (
+                        entry.type.is_pyobject or entry.type.is_unspecified)):
+                    messages.error(
+                        node.pos,
+                        "local variable '%s' referenced before assignment"
+                        % entry.name)
+                else:
+                    messages.warning(
+                        node.pos,
+                        "local variable '%s' referenced before assignment"
+                        % entry.name)
+            elif warn_maybe_uninitialized:
+                msg = "local variable '%s' might be referenced before assignment" % entry.name
+                if entry.in_closure:
+                    msg += " (maybe initialized inside a closure)"
+                messages.warning(
+                    node.pos,
+                    msg)
+        elif Unknown in node.cf_state:
+            # TODO: better cross-closure analysis to know when inner functions
+            #       are being called before a variable is being set, and when
+            #       a variable is known to be set before even defining the
+            #       inner function, etc.
+            node.cf_maybe_null = True
+        else:
+            node.cf_is_null = False
+            node.cf_maybe_null = False
+
+    # Unused result
+    for assmt in assignments:
+        if (not assmt.refs and not assmt.entry.is_pyclass_attr
+                and not assmt.entry.in_closure):
+            if assmt.entry.cf_references and warn_unused_result:
+                if assmt.is_arg:
+                    messages.warning(assmt.pos, "Unused argument value '%s'" %
+                                     assmt.entry.name)
+                else:
+                    messages.warning(assmt.pos, "Unused result in '%s'" %
+                                     assmt.entry.name)
+            assmt.lhs.cf_used = False
+
+    # Unused entries
+    for entry in flow.entries:
+        if (not entry.cf_references
+                and not entry.is_pyclass_attr):
+            if entry.name != '_' and not entry.name.startswith('unused'):
+                # '_' is often used for unused variables, e.g. in loops
+                if entry.is_arg:
+                    if warn_unused_arg:
+                        messages.warning(entry.pos, "Unused argument '%s'" %
+                                         entry.name)
+                else:
+                    if warn_unused:
+                        messages.warning(entry.pos, "Unused entry '%s'" %
+                                         entry.name)
+            entry.cf_used = False
+
+    messages.report()
+
+    for node in assmt_nodes:
+        node.cf_state = ControlFlowState(node.cf_state)
+    for node in references:
+        node.cf_state = ControlFlowState(node.cf_state)
+
+
+class AssignmentCollector(TreeVisitor):
+    def __init__(self):
+        super(AssignmentCollector, self).__init__()
+        self.assignments = []
+
+    def visit_Node(self):
+        self._visitchildren(self, None, None)
+
+    def visit_SingleAssignmentNode(self, node):
+        self.assignments.append((node.lhs, node.rhs))
+
+    def visit_CascadedAssignmentNode(self, node):
+        for lhs in node.lhs_list:
+            self.assignments.append((lhs, node.rhs))
+
+
+class ControlFlowAnalysis(CythonTransform):
+
+    def find_in_stack(self, env):
+        if env == self.env:
+            return self.flow
+        for e, flow in reversed(self.stack):
+            if e is env:
+                return flow
+        assert False
+
+    def visit_ModuleNode(self, node):
+        dot_output = self.current_directives['control_flow.dot_output']
+        self.gv_ctx = GVContext() if dot_output else None
+
+        from .Optimize import ConstantFolding
+        self.constant_folder = ConstantFolding()
+
+        # Set of NameNode reductions
+        self.reductions = set()
+
+        self.in_inplace_assignment = False
+        self.env = node.scope
+        self.flow = ControlFlow()
+        self.stack = []  # a stack of (env, flow) tuples
+        self.object_expr = TypedExprNode(PyrexTypes.py_object_type, may_be_none=True)
+        self.visitchildren(node)
+
+        check_definitions(self.flow, self.current_directives)
+
+        if dot_output:
+            annotate_defs = self.current_directives['control_flow.dot_annotate_defs']
+            with open(dot_output, 'wt') as fp:
+                self.gv_ctx.render(fp, 'module', annotate_defs=annotate_defs)
+        return node
+
+    def visit_FuncDefNode(self, node):
+        for arg in node.args:
+            if arg.default:
+                self.visitchildren(arg)
+        self.visitchildren(node, ('decorators',))
+        self.stack.append((self.env, self.flow))
+        self.env = node.local_scope
+        self.flow = ControlFlow()
+
+        # Collect all entries
+        for entry in node.local_scope.entries.values():
+            if self.flow.is_tracked(entry):
+                self.flow.entries.add(entry)
+
+        self.mark_position(node)
+        # Function body block
+        self.flow.nextblock()
+
+        for arg in node.args:
+            self._visit(arg)
+        if node.star_arg:
+            self.flow.mark_argument(node.star_arg,
+                                    TypedExprNode(Builtin.tuple_type,
+                                                  may_be_none=False),
+                                    node.star_arg.entry)
+        if node.starstar_arg:
+            self.flow.mark_argument(node.starstar_arg,
+                                    TypedExprNode(Builtin.dict_type,
+                                                  may_be_none=False),
+                                    node.starstar_arg.entry)
+        self._visit(node.body)
+        # Workaround for generators
+        if node.is_generator:
+            self._visit(node.gbody.body)
+
+        # Exit point
+        if self.flow.block:
+            self.flow.block.add_child(self.flow.exit_point)
+
+        # Cleanup graph
+        self.flow.normalize()
+        check_definitions(self.flow, self.current_directives)
+        self.flow.blocks.add(self.flow.entry_point)
+
+        if self.gv_ctx is not None:
+            self.gv_ctx.add(GV(node.local_scope.name, self.flow))
+
+        self.env, self.flow = self.stack.pop()
+        return node
+
+    def visit_DefNode(self, node):
+        node.used = True
+        return self.visit_FuncDefNode(node)
+
+    def visit_GeneratorBodyDefNode(self, node):
+        return node
+
+    def visit_CTypeDefNode(self, node):
+        return node
+
+    def mark_assignment(self, lhs, rhs=None, rhs_scope=None):
+        if not self.flow.block:
+            return
+        if self.flow.exceptions:
+            exc_descr = self.flow.exceptions[-1]
+            self.flow.block.add_child(exc_descr.entry_point)
+            self.flow.nextblock()
+
+        if not rhs:
+            rhs = self.object_expr
+        if lhs.is_name:
+            if lhs.entry is not None:
+                entry = lhs.entry
+            else:
+                entry = self.env.lookup(lhs.name)
+            if entry is None:  # TODO: This shouldn't happen...
+                return
+            self.flow.mark_assignment(lhs, rhs, entry, rhs_scope=rhs_scope)
+        elif lhs.is_sequence_constructor:
+            for i, arg in enumerate(lhs.args):
+                if arg.is_starred:
+                    # "a, *b = x" assigns a list to "b"
+                    item_node = TypedExprNode(Builtin.list_type, may_be_none=False, pos=arg.pos)
+                elif rhs is self.object_expr:
+                    item_node = rhs
+                else:
+                    item_node = rhs.inferable_item_node(i)
+                self.mark_assignment(arg, item_node)
+        else:
+            self._visit(lhs)
+
+        if self.flow.exceptions:
+            exc_descr = self.flow.exceptions[-1]
+            self.flow.block.add_child(exc_descr.entry_point)
+            self.flow.nextblock()
+
+    def mark_position(self, node):
+        """Mark position if DOT output is enabled."""
+        if self.current_directives['control_flow.dot_output']:
+            self.flow.mark_position(node)
+
+    def visit_FromImportStatNode(self, node):
+        for name, target in node.items:
+            if name != "*":
+                self.mark_assignment(target)
+        self.visitchildren(node)
+        return node
+
+    def visit_AssignmentNode(self, node):
+        raise InternalError("Unhandled assignment node %s" % type(node))
+
+    def visit_SingleAssignmentNode(self, node):
+        self._visit(node.rhs)
+        self.mark_assignment(node.lhs, node.rhs)
+        return node
+
+    def visit_CascadedAssignmentNode(self, node):
+        self._visit(node.rhs)
+        for lhs in node.lhs_list:
+            self.mark_assignment(lhs, node.rhs)
+        return node
+
+    def visit_ParallelAssignmentNode(self, node):
+        collector = AssignmentCollector()
+        collector.visitchildren(node)
+        for lhs, rhs in collector.assignments:
+            self._visit(rhs)
+        for lhs, rhs in collector.assignments:
+            self.mark_assignment(lhs, rhs)
+        return node
+
+    def visit_InPlaceAssignmentNode(self, node):
+        self.in_inplace_assignment = True
+        self.visitchildren(node)
+        self.in_inplace_assignment = False
+        self.mark_assignment(node.lhs, self.constant_folder(node.create_binop_node()))
+        return node
+
+    def visit_DelStatNode(self, node):
+        for arg in node.args:
+            if arg.is_name:
+                entry = arg.entry or self.env.lookup(arg.name)
+                if entry.in_closure or entry.from_closure:
+                    error(arg.pos,
+                          "can not delete variable '%s' "
+                          "referenced in nested scope" % entry.name)
+                if not node.ignore_nonexisting:
+                    self._visit(arg)  # mark reference
+                self.flow.mark_deletion(arg, entry)
+            else:
+                self._visit(arg)
+        return node
+
+    def visit_CArgDeclNode(self, node):
+        entry = self.env.lookup(node.name)
+        if entry:
+            may_be_none = not node.not_none
+            self.flow.mark_argument(
+                node, TypedExprNode(entry.type, may_be_none), entry)
+        return node
+
+    def visit_NameNode(self, node):
+        if self.flow.block:
+            entry = node.entry or self.env.lookup(node.name)
+            if entry:
+                self.flow.mark_reference(node, entry)
+
+                if entry in self.reductions and not self.in_inplace_assignment:
+                    error(node.pos,
+                          "Cannot read reduction variable in loop body")
+
+        return node
+
+    def visit_StatListNode(self, node):
+        if self.flow.block:
+            for stat in node.stats:
+                self._visit(stat)
+                if not self.flow.block:
+                    stat.is_terminator = True
+                    break
+        return node
+
+    def visit_Node(self, node):
+        self.visitchildren(node)
+        self.mark_position(node)
+        return node
+
+    def visit_SizeofVarNode(self, node):
+        return node
+
+    def visit_TypeidNode(self, node):
+        return node
+
+    def visit_IfStatNode(self, node):
+        next_block = self.flow.newblock()
+        parent = self.flow.block
+        # If clauses
+        for clause in node.if_clauses:
+            parent = self.flow.nextblock(parent)
+            self._visit(clause.condition)
+            self.flow.nextblock()
+            self._visit(clause.body)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+        # Else clause
+        if node.else_clause:
+            self.flow.nextblock(parent=parent)
+            self._visit(node.else_clause)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+        else:
+            parent.add_child(next_block)
+
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def visit_AssertStatNode(self, node):
+        """Essentially an if-condition that wraps a RaiseStatNode.
+        """
+        self.mark_position(node)
+        next_block = self.flow.newblock()
+        parent = self.flow.block
+        # failure case
+        parent = self.flow.nextblock(parent)
+        self._visit(node.condition)
+        self.flow.nextblock()
+        self._visit(node.exception)
+        if self.flow.block:
+            self.flow.block.add_child(next_block)
+        parent.add_child(next_block)
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def visit_WhileStatNode(self, node):
+        condition_block = self.flow.nextblock()
+        next_block = self.flow.newblock()
+        # Condition block
+        self.flow.loops.append(LoopDescr(next_block, condition_block))
+        if node.condition:
+            self._visit(node.condition)
+        # Body block
+        self.flow.nextblock()
+        self._visit(node.body)
+        self.flow.loops.pop()
+        # Loop it
+        if self.flow.block:
+            self.flow.block.add_child(condition_block)
+            self.flow.block.add_child(next_block)
+        # Else clause
+        if node.else_clause:
+            self.flow.nextblock(parent=condition_block)
+            self._visit(node.else_clause)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+        else:
+            condition_block.add_child(next_block)
+
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def mark_forloop_target(self, node):
+        # TODO: Remove redundancy with range optimization...
+        is_special = False
+        sequence = node.iterator.sequence
+        target = node.target
+        env = node.iterator.expr_scope or self.env
+        if isinstance(sequence, ExprNodes.SimpleCallNode):
+            function = sequence.function
+            if sequence.self is None and function.is_name:
+                entry = env.lookup(function.name)
+                if not entry or entry.is_builtin:
+                    if function.name == 'reversed' and len(sequence.args) == 1:
+                        sequence = sequence.args[0]
+                    elif function.name == 'enumerate' and len(sequence.args) == 1:
+                        if target.is_sequence_constructor and len(target.args) == 2:
+                            iterator = sequence.args[0]
+                            if iterator.is_name:
+                                iterator_type = iterator.infer_type(env)
+                                if iterator_type.is_builtin_type:
+                                    # assume that builtin types have a length within Py_ssize_t
+                                    self.mark_assignment(
+                                        target.args[0],
+                                        ExprNodes.IntNode(target.pos, value='PY_SSIZE_T_MAX',
+                                                          type=PyrexTypes.c_py_ssize_t_type),
+                                        rhs_scope=node.iterator.expr_scope)
+                                    target = target.args[1]
+                                    sequence = sequence.args[0]
+        if isinstance(sequence, ExprNodes.SimpleCallNode):
+            function = sequence.function
+            if sequence.self is None and function.is_name:
+                entry = env.lookup(function.name)
+                if not entry or entry.is_builtin:
+                    if function.name in ('range', 'xrange'):
+                        is_special = True
+                        for arg in sequence.args[:2]:
+                            self.mark_assignment(target, arg, rhs_scope=node.iterator.expr_scope)
+                        if len(sequence.args) > 2:
+                            self.mark_assignment(target, self.constant_folder(
+                                ExprNodes.binop_node(node.pos,
+                                                     '+',
+                                                     sequence.args[0],
+                                                     sequence.args[2])),
+                                                rhs_scope=node.iterator.expr_scope)
+
+        if not is_special:
+            # A for-loop basically translates to subsequent calls to
+            # __getitem__(), so using an IndexNode here allows us to
+            # naturally infer the base type of pointers, C arrays,
+            # Python strings, etc., while correctly falling back to an
+            # object type when the base type cannot be handled.
+
+            self.mark_assignment(target, node.item, rhs_scope=node.iterator.expr_scope)
+
+    def visit_AsyncForStatNode(self, node):
+        return self.visit_ForInStatNode(node)
+
+    def visit_ForInStatNode(self, node):
+        condition_block = self.flow.nextblock()
+        next_block = self.flow.newblock()
+        # Condition with iterator
+        self.flow.loops.append(LoopDescr(next_block, condition_block))
+        self._visit(node.iterator)
+        # Target assignment
+        self.flow.nextblock()
+
+        if isinstance(node, Nodes.ForInStatNode):
+            self.mark_forloop_target(node)
+        elif isinstance(node, Nodes.AsyncForStatNode):
+            # not entirely correct, but good enough for now
+            self.mark_assignment(node.target, node.item)
+        else:  # Parallel
+            self.mark_assignment(node.target)
+
+        # Body block
+        if isinstance(node, Nodes.ParallelRangeNode):
+            # In case of an invalid
+            self._delete_privates(node, exclude=node.target.entry)
+
+        self.flow.nextblock()
+        self._visit(node.body)
+        self.flow.loops.pop()
+
+        # Loop it
+        if self.flow.block:
+            self.flow.block.add_child(condition_block)
+        # Else clause
+        if node.else_clause:
+            self.flow.nextblock(parent=condition_block)
+            self._visit(node.else_clause)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+        else:
+            condition_block.add_child(next_block)
+
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def _delete_privates(self, node, exclude=None):
+        for private_node in node.assigned_nodes:
+            if not exclude or private_node.entry is not exclude:
+                self.flow.mark_deletion(private_node, private_node.entry)
+
+    def visit_ParallelRangeNode(self, node):
+        reductions = self.reductions
+
+        # if node.target is None or not a NameNode, an error will have
+        # been previously issued
+        if hasattr(node.target, 'entry'):
+            self.reductions = set(reductions)
+
+            for private_node in node.assigned_nodes:
+                private_node.entry.error_on_uninitialized = True
+                pos, reduction = node.assignments[private_node.entry]
+                if reduction:
+                    self.reductions.add(private_node.entry)
+
+            node = self.visit_ForInStatNode(node)
+
+        self.reductions = reductions
+        return node
+
+    def visit_ParallelWithBlockNode(self, node):
+        for private_node in node.assigned_nodes:
+            private_node.entry.error_on_uninitialized = True
+
+        self._delete_privates(node)
+        self.visitchildren(node)
+        self._delete_privates(node)
+
+        return node
+
+    def visit_ForFromStatNode(self, node):
+        condition_block = self.flow.nextblock()
+        next_block = self.flow.newblock()
+        # Condition with iterator
+        self.flow.loops.append(LoopDescr(next_block, condition_block))
+        self._visit(node.bound1)
+        self._visit(node.bound2)
+        if node.step is not None:
+            self._visit(node.step)
+        # Target assignment
+        self.flow.nextblock()
+        self.mark_assignment(node.target, node.bound1)
+        if node.step is not None:
+            self.mark_assignment(node.target, self.constant_folder(
+                ExprNodes.binop_node(node.pos, '+', node.bound1, node.step)))
+        # Body block
+        self.flow.nextblock()
+        self._visit(node.body)
+        self.flow.loops.pop()
+        # Loop it
+        if self.flow.block:
+            self.flow.block.add_child(condition_block)
+        # Else clause
+        if node.else_clause:
+            self.flow.nextblock(parent=condition_block)
+            self._visit(node.else_clause)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+        else:
+            condition_block.add_child(next_block)
+
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def visit_LoopNode(self, node):
+        raise InternalError("Generic loops are not supported")
+
+    def visit_WithTargetAssignmentStatNode(self, node):
+        self.mark_assignment(node.lhs, node.with_node.enter_call)
+        return node
+
+    def visit_WithStatNode(self, node):
+        self._visit(node.manager)
+        self._visit(node.enter_call)
+        self._visit(node.body)
+        return node
+
+    def visit_TryExceptStatNode(self, node):
+        # After exception handling
+        next_block = self.flow.newblock()
+        # Body block
+        self.flow.newblock()
+        # Exception entry point
+        entry_point = self.flow.newblock()
+        self.flow.exceptions.append(ExceptionDescr(entry_point))
+        self.flow.nextblock()
+        ## XXX: links to exception handling point should be added by
+        ## XXX: children nodes
+        self.flow.block.add_child(entry_point)
+        self.flow.nextblock()
+        self.flow.in_try_block += 1
+        self._visit(node.body)
+        self.flow.in_try_block -= 1
+        self.flow.exceptions.pop()
+
+        # After exception
+        if self.flow.block:
+            if node.else_clause:
+                self.flow.nextblock()
+                self._visit(node.else_clause)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+
+        for clause in node.except_clauses:
+            self.flow.block = entry_point
+            if clause.pattern:
+                for pattern in clause.pattern:
+                    self._visit(pattern)
+            else:
+                # TODO: handle * pattern
+                pass
+            entry_point = self.flow.newblock(parent=self.flow.block)
+            self.flow.nextblock()
+            if clause.target:
+                self.mark_assignment(clause.target)
+            self._visit(clause.body)
+            if self.flow.block:
+                self.flow.block.add_child(next_block)
+
+        if self.flow.exceptions:
+            entry_point.add_child(self.flow.exceptions[-1].entry_point)
+
+        if next_block.parents:
+            self.flow.block = next_block
+        else:
+            self.flow.block = None
+        return node
+
+    def visit_TryFinallyStatNode(self, node):
+        body_block = self.flow.nextblock()
+
+        # Exception entry point
+        entry_point = self.flow.newblock()
+        self.flow.block = entry_point
+        self._visit(node.finally_except_clause)
+
+        if self.flow.block and self.flow.exceptions:
+            self.flow.block.add_child(self.flow.exceptions[-1].entry_point)
+
+        # Normal execution
+        finally_enter = self.flow.newblock()
+        self.flow.block = finally_enter
+        self._visit(node.finally_clause)
+        finally_exit = self.flow.block
+
+        descr = ExceptionDescr(entry_point, finally_enter, finally_exit)
+        self.flow.exceptions.append(descr)
+        if self.flow.loops:
+            self.flow.loops[-1].exceptions.append(descr)
+        self.flow.block = body_block
+        body_block.add_child(entry_point)
+        self.flow.nextblock()
+        self.flow.in_try_block += 1
+        self._visit(node.body)
+        self.flow.in_try_block -= 1
+        self.flow.exceptions.pop()
+        if self.flow.loops:
+            self.flow.loops[-1].exceptions.pop()
+
+        if self.flow.block:
+            self.flow.block.add_child(finally_enter)
+            if finally_exit:
+                self.flow.block = self.flow.nextblock(parent=finally_exit)
+            else:
+                self.flow.block = None
+        return node
+
+    def visit_RaiseStatNode(self, node):
+        self.mark_position(node)
+        self.visitchildren(node)
+        if self.flow.exceptions:
+            self.flow.block.add_child(self.flow.exceptions[-1].entry_point)
+        self.flow.block = None
+        if self.flow.in_try_block:
+            node.in_try_block = True
+        return node
+
+    def visit_ReraiseStatNode(self, node):
+        self.mark_position(node)
+        if self.flow.exceptions:
+            self.flow.block.add_child(self.flow.exceptions[-1].entry_point)
+        self.flow.block = None
+        return node
+
+    def visit_ReturnStatNode(self, node):
+        self.mark_position(node)
+        self.visitchildren(node)
+
+        outer_exception_handlers = iter(self.flow.exceptions[::-1])
+        for handler in outer_exception_handlers:
+            if handler.finally_enter:
+                self.flow.block.add_child(handler.finally_enter)
+                if handler.finally_exit:
+                    # 'return' goes to function exit, or to the next outer 'finally' clause
+                    exit_point = self.flow.exit_point
+                    for next_handler in outer_exception_handlers:
+                        if next_handler.finally_enter:
+                            exit_point = next_handler.finally_enter
+                            break
+                    handler.finally_exit.add_child(exit_point)
+                break
+        else:
+            if self.flow.block:
+                self.flow.block.add_child(self.flow.exit_point)
+        self.flow.block = None
+        return node
+
+    def visit_BreakStatNode(self, node):
+        if not self.flow.loops:
+            #error(node.pos, "break statement not inside loop")
+            return node
+        loop = self.flow.loops[-1]
+        self.mark_position(node)
+        for exception in loop.exceptions[::-1]:
+            if exception.finally_enter:
+                self.flow.block.add_child(exception.finally_enter)
+                if exception.finally_exit:
+                    exception.finally_exit.add_child(loop.next_block)
+                break
+        else:
+            self.flow.block.add_child(loop.next_block)
+        self.flow.block = None
+        return node
+
+    def visit_ContinueStatNode(self, node):
+        if not self.flow.loops:
+            #error(node.pos, "continue statement not inside loop")
+            return node
+        loop = self.flow.loops[-1]
+        self.mark_position(node)
+        for exception in loop.exceptions[::-1]:
+            if exception.finally_enter:
+                self.flow.block.add_child(exception.finally_enter)
+                if exception.finally_exit:
+                    exception.finally_exit.add_child(loop.loop_block)
+                break
+        else:
+            self.flow.block.add_child(loop.loop_block)
+        self.flow.block = None
+        return node
+
+    def visit_ComprehensionNode(self, node):
+        if node.expr_scope:
+            self.stack.append((self.env, self.flow))
+            self.env = node.expr_scope
+        # Skip append node here
+        self._visit(node.loop)
+        if node.expr_scope:
+            self.env, _ = self.stack.pop()
+        return node
+
+    def visit_ScopedExprNode(self, node):
+        # currently this is written to deal with these two types
+        # (with comprehensions covered in their own function)
+        assert isinstance(node, (ExprNodes.IteratorNode, ExprNodes.AsyncIteratorNode)), node
+        if node.expr_scope:
+            self.stack.append((self.env, self.flow))
+            self.flow = self.find_in_stack(node.expr_scope)
+            self.env = node.expr_scope
+        self.visitchildren(node)
+        if node.expr_scope:
+            self.env, self.flow = self.stack.pop()
+        return node
+
+    def visit_PyClassDefNode(self, node):
+        self.visitchildren(node, ('dict', 'metaclass',
+                                  'mkw', 'bases', 'class_result'))
+        self.flow.mark_assignment(node.target, node.classobj,
+                                  self.env.lookup(node.target.name))
+        self.stack.append((self.env, self.flow))
+        self.env = node.scope
+        self.flow.nextblock()
+        if node.doc_node:
+            self.flow.mark_assignment(node.doc_node, fake_rhs_expr, node.doc_node.entry)
+        self.visitchildren(node, ('body',))
+        self.flow.nextblock()
+        self.env, _ = self.stack.pop()
+        return node
+
+    def visit_CClassDefNode(self, node):
+        # just make sure the nodes scope is findable in-case there is a list comprehension in it
+        self.stack.append((node.scope, self.flow))
+        self.visitchildren(node)
+        self.stack.pop()
+        return node
+
+    def visit_AmpersandNode(self, node):
+        if node.operand.is_name:
+            # Fake assignment to silence warning
+            self.mark_assignment(node.operand, fake_rhs_expr)
+        self.visitchildren(node)
+        return node

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/FusedNode.py

@@ -0,0 +1,1015 @@
+from __future__ import absolute_import
+
+import copy
+
+from . import (ExprNodes, PyrexTypes, MemoryView,
+               ParseTreeTransforms, StringEncoding, Errors,
+               Naming)
+from .ExprNodes import CloneNode, ProxyNode, TupleNode
+from .Nodes import FuncDefNode, CFuncDefNode, StatListNode, DefNode
+from ..Utils import OrderedSet
+from .Errors import error, CannotSpecialize
+
+
+class FusedCFuncDefNode(StatListNode):
+    """
+    This node replaces a function with fused arguments. It deep-copies the
+    function for every permutation of fused types, and allocates a new local
+    scope for it. It keeps track of the original function in self.node, and
+    the entry of the original function in the symbol table is given the
+    'fused_cfunction' attribute which points back to us.
+    Then when a function lookup occurs (to e.g. call it), the call can be
+    dispatched to the right function.
+
+    node    FuncDefNode    the original function
+    nodes   [FuncDefNode]  list of copies of node with different specific types
+    py_func DefNode        the fused python function subscriptable from
+                           Python space
+    __signatures__         A DictNode mapping signature specialization strings
+                           to PyCFunction nodes
+    resulting_fused_function  PyCFunction for the fused DefNode that delegates
+                              to specializations
+    fused_func_assignment   Assignment of the fused function to the function name
+    defaults_tuple          TupleNode of defaults (letting PyCFunctionNode build
+                            defaults would result in many different tuples)
+    specialized_pycfuncs    List of synthesized pycfunction nodes for the
+                            specializations
+    code_object             CodeObjectNode shared by all specializations and the
+                            fused function
+
+    fused_compound_types    All fused (compound) types (e.g. floating[:])
+    """
+
+    __signatures__ = None
+    resulting_fused_function = None
+    fused_func_assignment = None
+    defaults_tuple = None
+    decorators = None
+
+    child_attrs = StatListNode.child_attrs + [
+        '__signatures__', 'resulting_fused_function', 'fused_func_assignment']
+
+    def __init__(self, node, env):
+        super(FusedCFuncDefNode, self).__init__(node.pos)
+
+        self.nodes = []
+        self.node = node
+
+        is_def = isinstance(self.node, DefNode)
+        if is_def:
+            # self.node.decorators = []
+            self.copy_def(env)
+        else:
+            self.copy_cdef(env)
+
+        # Perform some sanity checks. If anything fails, it's a bug
+        for n in self.nodes:
+            assert not n.entry.type.is_fused
+            assert not n.local_scope.return_type.is_fused
+            if node.return_type.is_fused:
+                assert not n.return_type.is_fused
+
+            if not is_def and n.cfunc_declarator.optional_arg_count:
+                assert n.type.op_arg_struct
+
+        node.entry.fused_cfunction = self
+        # Copy the nodes as AnalyseDeclarationsTransform will prepend
+        # self.py_func to self.stats, as we only want specialized
+        # CFuncDefNodes in self.nodes
+        self.stats = self.nodes[:]
+
+    def copy_def(self, env):
+        """
+        Create a copy of the original def or lambda function for specialized
+        versions.
+        """
+        fused_compound_types = PyrexTypes.unique(
+            [arg.type for arg in self.node.args if arg.type.is_fused])
+        fused_types = self._get_fused_base_types(fused_compound_types)
+        permutations = PyrexTypes.get_all_specialized_permutations(fused_types)
+
+        self.fused_compound_types = fused_compound_types
+
+        if self.node.entry in env.pyfunc_entries:
+            env.pyfunc_entries.remove(self.node.entry)
+
+        for cname, fused_to_specific in permutations:
+            copied_node = copy.deepcopy(self.node)
+            # keep signature object identity for special casing in DefNode.analyse_declarations()
+            copied_node.entry.signature = self.node.entry.signature
+
+            self._specialize_function_args(copied_node.args, fused_to_specific)
+            copied_node.return_type = self.node.return_type.specialize(
+                                                    fused_to_specific)
+
+            copied_node.analyse_declarations(env)
+            # copied_node.is_staticmethod = self.node.is_staticmethod
+            # copied_node.is_classmethod = self.node.is_classmethod
+            self.create_new_local_scope(copied_node, env, fused_to_specific)
+            self.specialize_copied_def(copied_node, cname, self.node.entry,
+                                       fused_to_specific, fused_compound_types)
+
+            PyrexTypes.specialize_entry(copied_node.entry, cname)
+            copied_node.entry.used = True
+            env.entries[copied_node.entry.name] = copied_node.entry
+
+            if not self.replace_fused_typechecks(copied_node):
+                break
+
+        self.orig_py_func = self.node
+        self.py_func = self.make_fused_cpdef(self.node, env, is_def=True)
+
+    def copy_cdef(self, env):
+        """
+        Create a copy of the original c(p)def function for all specialized
+        versions.
+        """
+        permutations = self.node.type.get_all_specialized_permutations()
+        # print 'Node %s has %d specializations:' % (self.node.entry.name,
+        #                                            len(permutations))
+        # import pprint; pprint.pprint([d for cname, d in permutations])
+
+        # Prevent copying of the python function
+        self.orig_py_func = orig_py_func = self.node.py_func
+        self.node.py_func = None
+        if orig_py_func:
+            env.pyfunc_entries.remove(orig_py_func.entry)
+
+        fused_types = self.node.type.get_fused_types()
+        self.fused_compound_types = fused_types
+
+        new_cfunc_entries = []
+        for cname, fused_to_specific in permutations:
+            copied_node = copy.deepcopy(self.node)
+
+            # Make the types in our CFuncType specific.
+            try:
+                type = copied_node.type.specialize(fused_to_specific)
+            except CannotSpecialize:
+                # unlike for the argument types, specializing the return type can fail
+                error(copied_node.pos, "Return type is a fused type that cannot "
+                      "be determined from the function arguments")
+                self.py_func = None  # this is just to let the compiler exit gracefully
+                return
+            entry = copied_node.entry
+            type.specialize_entry(entry, cname)
+
+            # Reuse existing Entries (e.g. from .pxd files).
+            for i, orig_entry in enumerate(env.cfunc_entries):
+                if entry.cname == orig_entry.cname and type.same_as_resolved_type(orig_entry.type):
+                    copied_node.entry = env.cfunc_entries[i]
+                    if not copied_node.entry.func_cname:
+                        copied_node.entry.func_cname = entry.func_cname
+                    entry = copied_node.entry
+                    type = entry.type
+                    break
+            else:
+                new_cfunc_entries.append(entry)
+
+            copied_node.type = type
+            entry.type, type.entry = type, entry
+
+            entry.used = (entry.used or
+                          self.node.entry.defined_in_pxd or
+                          env.is_c_class_scope or
+                          entry.is_cmethod)
+
+            if self.node.cfunc_declarator.optional_arg_count:
+                self.node.cfunc_declarator.declare_optional_arg_struct(
+                                           type, env, fused_cname=cname)
+
+            copied_node.return_type = type.return_type
+            self.create_new_local_scope(copied_node, env, fused_to_specific)
+
+            # Make the argument types in the CFuncDeclarator specific
+            self._specialize_function_args(copied_node.cfunc_declarator.args,
+                                           fused_to_specific)
+
+            # If a cpdef, declare all specialized cpdefs (this
+            # also calls analyse_declarations)
+            copied_node.declare_cpdef_wrapper(env)
+            if copied_node.py_func:
+                env.pyfunc_entries.remove(copied_node.py_func.entry)
+
+                self.specialize_copied_def(
+                        copied_node.py_func, cname, self.node.entry.as_variable,
+                        fused_to_specific, fused_types)
+
+            if not self.replace_fused_typechecks(copied_node):
+                break
+
+        # replace old entry with new entries
+        if self.node.entry in env.cfunc_entries:
+            cindex = env.cfunc_entries.index(self.node.entry)
+            env.cfunc_entries[cindex:cindex+1] = new_cfunc_entries
+        else:
+            env.cfunc_entries.extend(new_cfunc_entries)
+
+        if orig_py_func:
+            self.py_func = self.make_fused_cpdef(orig_py_func, env,
+                                                 is_def=False)
+        else:
+            self.py_func = orig_py_func
+
+    def _get_fused_base_types(self, fused_compound_types):
+        """
+        Get a list of unique basic fused types, from a list of
+        (possibly) compound fused types.
+        """
+        base_types = []
+        seen = set()
+        for fused_type in fused_compound_types:
+            fused_type.get_fused_types(result=base_types, seen=seen)
+        return base_types
+
+    def _specialize_function_args(self, args, fused_to_specific):
+        for arg in args:
+            if arg.type.is_fused:
+                arg.type = arg.type.specialize(fused_to_specific)
+                if arg.type.is_memoryviewslice:
+                    arg.type.validate_memslice_dtype(arg.pos)
+                if arg.annotation:
+                    # TODO might be nice if annotations were specialized instead?
+                    # (Or might be hard to do reliably)
+                    arg.annotation.untyped = True
+
+    def create_new_local_scope(self, node, env, f2s):
+        """
+        Create a new local scope for the copied node and append it to
+        self.nodes. A new local scope is needed because the arguments with the
+        fused types are already in the local scope, and we need the specialized
+        entries created after analyse_declarations on each specialized version
+        of the (CFunc)DefNode.
+        f2s is a dict mapping each fused type to its specialized version
+        """
+        node.create_local_scope(env)
+        node.local_scope.fused_to_specific = f2s
+
+        # This is copied from the original function, set it to false to
+        # stop recursion
+        node.has_fused_arguments = False
+        self.nodes.append(node)
+
+    def specialize_copied_def(self, node, cname, py_entry, f2s, fused_compound_types):
+        """Specialize the copy of a DefNode given the copied node,
+        the specialization cname and the original DefNode entry"""
+        fused_types = self._get_fused_base_types(fused_compound_types)
+        type_strings = [
+            PyrexTypes.specialization_signature_string(fused_type, f2s)
+                for fused_type in fused_types
+        ]
+
+        node.specialized_signature_string = '|'.join(type_strings)
+
+        node.entry.pymethdef_cname = PyrexTypes.get_fused_cname(
+                                        cname, node.entry.pymethdef_cname)
+        node.entry.doc = py_entry.doc
+        node.entry.doc_cname = py_entry.doc_cname
+
+    def replace_fused_typechecks(self, copied_node):
+        """
+        Branch-prune fused type checks like
+
+            if fused_t is int:
+                ...
+
+        Returns whether an error was issued and whether we should stop in
+        in order to prevent a flood of errors.
+        """
+        num_errors = Errors.get_errors_count()
+        transform = ParseTreeTransforms.ReplaceFusedTypeChecks(
+                                       copied_node.local_scope)
+        transform(copied_node)
+
+        if Errors.get_errors_count() > num_errors:
+            return False
+
+        return True
+
+    def _fused_instance_checks(self, normal_types, pyx_code, env):
+        """
+        Generate Cython code for instance checks, matching an object to
+        specialized types.
+        """
+        for specialized_type in normal_types:
+            # all_numeric = all_numeric and specialized_type.is_numeric
+            py_type_name = specialized_type.py_type_name()
+            if py_type_name == 'int':
+                # Support Python 2 long
+                py_type_name = '(int, long)'
+            pyx_code.context.update(
+                py_type_name=py_type_name,
+                specialized_type_name=specialized_type.specialization_string,
+            )
+            pyx_code.put_chunk(
+                u"""
+                    if isinstance(arg, {{py_type_name}}):
+                        dest_sig[{{dest_sig_idx}}] = '{{specialized_type_name}}'; break
+                """)
+
+    def _dtype_name(self, dtype):
+        name = str(dtype).replace('_', '__').replace(' ', '_')
+        if dtype.is_typedef:
+            name = Naming.fused_dtype_prefix + name
+        return name
+
+    def _dtype_type(self, dtype):
+        if dtype.is_typedef:
+            return self._dtype_name(dtype)
+        return str(dtype)
+
+    def _sizeof_dtype(self, dtype):
+        if dtype.is_pyobject:
+            return 'sizeof(void *)'
+        else:
+            return "sizeof(%s)" % self._dtype_type(dtype)
+
+    def _buffer_check_numpy_dtype_setup_cases(self, pyx_code):
+        "Setup some common cases to match dtypes against specializations"
+        with pyx_code.indenter("if kind in u'iu':"):
+            pyx_code.putln("pass")
+            pyx_code.named_insertion_point("dtype_int")
+
+        with pyx_code.indenter("elif kind == u'f':"):
+            pyx_code.putln("pass")
+            pyx_code.named_insertion_point("dtype_float")
+
+        with pyx_code.indenter("elif kind == u'c':"):
+            pyx_code.putln("pass")
+            pyx_code.named_insertion_point("dtype_complex")
+
+        with pyx_code.indenter("elif kind == u'O':"):
+            pyx_code.putln("pass")
+            pyx_code.named_insertion_point("dtype_object")
+
+    match = "dest_sig[{{dest_sig_idx}}] = '{{specialized_type_name}}'"
+    no_match = "dest_sig[{{dest_sig_idx}}] = None"
+    def _buffer_check_numpy_dtype(self, pyx_code, specialized_buffer_types, pythran_types):
+        """
+        Match a numpy dtype object to the individual specializations.
+        """
+        self._buffer_check_numpy_dtype_setup_cases(pyx_code)
+
+        for specialized_type in pythran_types+specialized_buffer_types:
+            final_type = specialized_type
+            if specialized_type.is_pythran_expr:
+                specialized_type = specialized_type.org_buffer
+            dtype = specialized_type.dtype
+            pyx_code.context.update(
+                itemsize_match=self._sizeof_dtype(dtype) + " == itemsize",
+                signed_match="not (%s_is_signed ^ dtype_signed)" % self._dtype_name(dtype),
+                dtype=dtype,
+                specialized_type_name=final_type.specialization_string)
+
+            dtypes = [
+                (dtype.is_int, pyx_code.dtype_int),
+                (dtype.is_float, pyx_code.dtype_float),
+                (dtype.is_complex, pyx_code.dtype_complex)
+            ]
+
+            for dtype_category, codewriter in dtypes:
+                if not dtype_category:
+                    continue
+                cond = '{{itemsize_match}} and (<Py_ssize_t>arg.ndim) == %d' % (
+                                                specialized_type.ndim,)
+                if dtype.is_int:
+                    cond += ' and {{signed_match}}'
+
+                if final_type.is_pythran_expr:
+                    cond += ' and arg_is_pythran_compatible'
+
+                with codewriter.indenter("if %s:" % cond):
+                    #codewriter.putln("print 'buffer match found based on numpy dtype'")
+                    codewriter.putln(self.match)
+                    codewriter.putln("break")
+
+    def _buffer_parse_format_string_check(self, pyx_code, decl_code,
+                                          specialized_type, env):
+        """
+        For each specialized type, try to coerce the object to a memoryview
+        slice of that type. This means obtaining a buffer and parsing the
+        format string.
+        TODO: separate buffer acquisition from format parsing
+        """
+        dtype = specialized_type.dtype
+        if specialized_type.is_buffer:
+            axes = [('direct', 'strided')] * specialized_type.ndim
+        else:
+            axes = specialized_type.axes
+
+        memslice_type = PyrexTypes.MemoryViewSliceType(dtype, axes)
+        memslice_type.create_from_py_utility_code(env)
+        pyx_code.context.update(
+            coerce_from_py_func=memslice_type.from_py_function,
+            dtype=dtype)
+        decl_code.putln(
+            "{{memviewslice_cname}} {{coerce_from_py_func}}(object, int)")
+
+        pyx_code.context.update(
+            specialized_type_name=specialized_type.specialization_string,
+            sizeof_dtype=self._sizeof_dtype(dtype),
+            ndim_dtype=specialized_type.ndim,
+            dtype_is_struct_obj=int(dtype.is_struct or dtype.is_pyobject))
+
+        # use the memoryview object to check itemsize and ndim.
+        # In principle it could check more, but these are the easiest to do quickly
+        pyx_code.put_chunk(
+            u"""
+                # try {{dtype}}
+                if (((itemsize == -1 and arg_as_memoryview.itemsize == {{sizeof_dtype}})
+                        or itemsize == {{sizeof_dtype}})
+                        and arg_as_memoryview.ndim == {{ndim_dtype}}):
+                    {{if dtype_is_struct_obj}}
+                    if __PYX_IS_PYPY2:
+                        # I wasn't able to diagnose why, but PyPy2 fails to convert a
+                        # memoryview to a Cython memoryview in this case
+                        memslice = {{coerce_from_py_func}}(arg, 0)
+                    else:
+                    {{else}}
+                    if True:
+                    {{endif}}
+                        memslice = {{coerce_from_py_func}}(arg_as_memoryview, 0)
+                    if memslice.memview:
+                        __PYX_XCLEAR_MEMVIEW(&memslice, 1)
+                        # print 'found a match for the buffer through format parsing'
+                        %s
+                        break
+                    else:
+                        __pyx_PyErr_Clear()
+            """ % self.match)
+
+    def _buffer_checks(self, buffer_types, pythran_types, pyx_code, decl_code, accept_none, env):
+        """
+        Generate Cython code to match objects to buffer specializations.
+        First try to get a numpy dtype object and match it against the individual
+        specializations. If that fails, try naively to coerce the object
+        to each specialization, which obtains the buffer each time and tries
+        to match the format string.
+        """
+        # The first thing to find a match in this loop breaks out of the loop
+        pyx_code.put_chunk(
+            u"""
+                """ + (u"arg_is_pythran_compatible = False" if pythran_types else u"") + u"""
+                if ndarray is not None:
+                    if isinstance(arg, ndarray):
+                        dtype = arg.dtype
+                        """ + (u"arg_is_pythran_compatible = True" if pythran_types else u"") + u"""
+                    elif __pyx_memoryview_check(arg):
+                        arg_base = arg.base
+                        if isinstance(arg_base, ndarray):
+                            dtype = arg_base.dtype
+                        else:
+                            dtype = None
+                    else:
+                        dtype = None
+
+                    itemsize = -1
+                    if dtype is not None:
+                        itemsize = dtype.itemsize
+                        kind = ord(dtype.kind)
+                        dtype_signed = kind == u'i'
+            """)
+        pyx_code.indent(2)
+        if pythran_types:
+            pyx_code.put_chunk(
+                u"""
+                        # Pythran only supports the endianness of the current compiler
+                        byteorder = dtype.byteorder
+                        if byteorder == "<" and not __Pyx_Is_Little_Endian():
+                            arg_is_pythran_compatible = False
+                        elif byteorder == ">" and __Pyx_Is_Little_Endian():
+                            arg_is_pythran_compatible = False
+                        if arg_is_pythran_compatible:
+                            cur_stride = itemsize
+                            shape = arg.shape
+                            strides = arg.strides
+                            for i in range(arg.ndim-1, -1, -1):
+                                if (<Py_ssize_t>strides[i]) != cur_stride:
+                                    arg_is_pythran_compatible = False
+                                    break
+                                cur_stride *= <Py_ssize_t> shape[i]
+                            else:
+                                arg_is_pythran_compatible = not (arg.flags.f_contiguous and (<Py_ssize_t>arg.ndim) > 1)
+                """)
+        pyx_code.named_insertion_point("numpy_dtype_checks")
+        self._buffer_check_numpy_dtype(pyx_code, buffer_types, pythran_types)
+        pyx_code.dedent(2)
+
+        if accept_none:
+            # If None is acceptable, then Cython <3.0 matched None with the
+            # first type. This behaviour isn't ideal, but keep it for backwards
+            # compatibility. Better behaviour would be to see if subsequent
+            # arguments give a stronger match.
+            pyx_code.context.update(
+                specialized_type_name=buffer_types[0].specialization_string
+            )
+            pyx_code.put_chunk(
+                """
+                if arg is None:
+                    %s
+                    break
+                """ % self.match)
+
+        # creating a Cython memoryview from a Python memoryview avoids the
+        # need to get the buffer multiple times, and we can
+        # also use it to check itemsizes etc
+        pyx_code.put_chunk(
+            """
+            try:
+                arg_as_memoryview = memoryview(arg)
+            except (ValueError, TypeError):
+                pass
+            """)
+        with pyx_code.indenter("else:"):
+            for specialized_type in buffer_types:
+                self._buffer_parse_format_string_check(
+                        pyx_code, decl_code, specialized_type, env)
+
+    def _buffer_declarations(self, pyx_code, decl_code, all_buffer_types, pythran_types):
+        """
+        If we have any buffer specializations, write out some variable
+        declarations and imports.
+        """
+        decl_code.put_chunk(
+            u"""
+                ctypedef struct {{memviewslice_cname}}:
+                    void *memview
+
+                void __PYX_XCLEAR_MEMVIEW({{memviewslice_cname}} *, int have_gil)
+                bint __pyx_memoryview_check(object)
+                bint __PYX_IS_PYPY2 "(CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION == 2)"
+            """)
+
+        pyx_code.local_variable_declarations.put_chunk(
+            u"""
+                cdef {{memviewslice_cname}} memslice
+                cdef Py_ssize_t itemsize
+                cdef bint dtype_signed
+                cdef Py_UCS4 kind
+
+                itemsize = -1
+            """)
+
+        if pythran_types:
+            pyx_code.local_variable_declarations.put_chunk(u"""
+                cdef bint arg_is_pythran_compatible
+                cdef Py_ssize_t cur_stride
+            """)
+
+        pyx_code.imports.put_chunk(
+            u"""
+                cdef type ndarray
+                ndarray = __Pyx_ImportNumPyArrayTypeIfAvailable()
+            """)
+
+        pyx_code.imports.put_chunk(
+            u"""
+                cdef memoryview arg_as_memoryview
+            """
+        )
+
+        seen_typedefs = set()
+        seen_int_dtypes = set()
+        for buffer_type in all_buffer_types:
+            dtype = buffer_type.dtype
+            dtype_name = self._dtype_name(dtype)
+            if dtype.is_typedef:
+                if dtype_name not in seen_typedefs:
+                    seen_typedefs.add(dtype_name)
+                    decl_code.putln(
+                        'ctypedef %s %s "%s"' % (dtype.resolve(), dtype_name,
+                                                 dtype.empty_declaration_code()))
+
+            if buffer_type.dtype.is_int:
+                if str(dtype) not in seen_int_dtypes:
+                    seen_int_dtypes.add(str(dtype))
+                    pyx_code.context.update(dtype_name=dtype_name,
+                                            dtype_type=self._dtype_type(dtype))
+                    pyx_code.local_variable_declarations.put_chunk(
+                        u"""
+                            cdef bint {{dtype_name}}_is_signed
+                            {{dtype_name}}_is_signed = not (<{{dtype_type}}> -1 > 0)
+                        """)
+
+    def _split_fused_types(self, arg):
+        """
+        Specialize fused types and split into normal types and buffer types.
+        """
+        specialized_types = PyrexTypes.get_specialized_types(arg.type)
+
+        # Prefer long over int, etc by sorting (see type classes in PyrexTypes.py)
+        specialized_types.sort()
+
+        seen_py_type_names = set()
+        normal_types, buffer_types, pythran_types = [], [], []
+        has_object_fallback = False
+        for specialized_type in specialized_types:
+            py_type_name = specialized_type.py_type_name()
+            if py_type_name:
+                if py_type_name in seen_py_type_names:
+                    continue
+                seen_py_type_names.add(py_type_name)
+                if py_type_name == 'object':
+                    has_object_fallback = True
+                else:
+                    normal_types.append(specialized_type)
+            elif specialized_type.is_pythran_expr:
+                pythran_types.append(specialized_type)
+            elif specialized_type.is_buffer or specialized_type.is_memoryviewslice:
+                buffer_types.append(specialized_type)
+
+        return normal_types, buffer_types, pythran_types, has_object_fallback
+
+    def _unpack_argument(self, pyx_code):
+        pyx_code.put_chunk(
+            u"""
+                # PROCESSING ARGUMENT {{arg_tuple_idx}}
+                if {{arg_tuple_idx}} < len(<tuple>args):
+                    arg = (<tuple>args)[{{arg_tuple_idx}}]
+                elif kwargs is not None and '{{arg.name}}' in <dict>kwargs:
+                    arg = (<dict>kwargs)['{{arg.name}}']
+                else:
+                {{if arg.default}}
+                    arg = (<tuple>defaults)[{{default_idx}}]
+                {{else}}
+                    {{if arg_tuple_idx < min_positional_args}}
+                        raise TypeError("Expected at least %d argument%s, got %d" % (
+                            {{min_positional_args}}, {{'"s"' if min_positional_args != 1 else '""'}}, len(<tuple>args)))
+                    {{else}}
+                        raise TypeError("Missing keyword-only argument: '%s'" % "{{arg.default}}")
+                    {{endif}}
+                {{endif}}
+            """)
+
+    def _fused_signature_index(self, pyx_code):
+        """
+        Generate Cython code for constructing a persistent nested dictionary index of
+        fused type specialization signatures.
+        """
+        pyx_code.put_chunk(
+            u"""
+                if not _fused_sigindex:
+                    for sig in <dict> signatures:
+                        sigindex_node = <dict> _fused_sigindex
+                        *sig_series, last_type = sig.strip('()').split('|')
+                        for sig_type in sig_series:
+                            if sig_type not in sigindex_node:
+                                sigindex_node[sig_type] = sigindex_node = {}
+                            else:
+                                sigindex_node = <dict> sigindex_node[sig_type]
+                        sigindex_node[last_type] = sig
+            """
+        )
+
+    def make_fused_cpdef(self, orig_py_func, env, is_def):
+        """
+        This creates the function that is indexable from Python and does
+        runtime dispatch based on the argument types. The function gets the
+        arg tuple and kwargs dict (or None) and the defaults tuple
+        as arguments from the Binding Fused Function's tp_call.
+        """
+        from . import TreeFragment, Code, UtilityCode
+
+        fused_types = self._get_fused_base_types([
+            arg.type for arg in self.node.args if arg.type.is_fused])
+
+        context = {
+            'memviewslice_cname': MemoryView.memviewslice_cname,
+            'func_args': self.node.args,
+            'n_fused': len(fused_types),
+            'min_positional_args':
+                self.node.num_required_args - self.node.num_required_kw_args
+                if is_def else
+                sum(1 for arg in self.node.args if arg.default is None),
+            'name': orig_py_func.entry.name,
+        }
+
+        pyx_code = Code.PyxCodeWriter(context=context)
+        decl_code = Code.PyxCodeWriter(context=context)
+        decl_code.put_chunk(
+            u"""
+                cdef extern from *:
+                    void __pyx_PyErr_Clear "PyErr_Clear" ()
+                    type __Pyx_ImportNumPyArrayTypeIfAvailable()
+                    int __Pyx_Is_Little_Endian()
+            """)
+        decl_code.indent()
+
+        pyx_code.put_chunk(
+            u"""
+                def __pyx_fused_cpdef(signatures, args, kwargs, defaults, _fused_sigindex={}):
+                    # FIXME: use a typed signature - currently fails badly because
+                    #        default arguments inherit the types we specify here!
+
+                    cdef list search_list
+                    cdef dict sigindex_node
+
+                    dest_sig = [None] * {{n_fused}}
+
+                    if kwargs is not None and not kwargs:
+                        kwargs = None
+
+                    cdef Py_ssize_t i
+
+                    # instance check body
+            """)
+
+        pyx_code.indent()  # indent following code to function body
+        pyx_code.named_insertion_point("imports")
+        pyx_code.named_insertion_point("func_defs")
+        pyx_code.named_insertion_point("local_variable_declarations")
+
+        fused_index = 0
+        default_idx = 0
+        all_buffer_types = OrderedSet()
+        seen_fused_types = set()
+        for i, arg in enumerate(self.node.args):
+            if arg.type.is_fused:
+                arg_fused_types = arg.type.get_fused_types()
+                if len(arg_fused_types) > 1:
+                    raise NotImplementedError("Determination of more than one fused base "
+                                              "type per argument is not implemented.")
+                fused_type = arg_fused_types[0]
+
+            if arg.type.is_fused and fused_type not in seen_fused_types:
+                seen_fused_types.add(fused_type)
+
+                context.update(
+                    arg_tuple_idx=i,
+                    arg=arg,
+                    dest_sig_idx=fused_index,
+                    default_idx=default_idx,
+                )
+
+                normal_types, buffer_types, pythran_types, has_object_fallback = self._split_fused_types(arg)
+                self._unpack_argument(pyx_code)
+
+                # 'unrolled' loop, first match breaks out of it
+                with pyx_code.indenter("while 1:"):
+                    if normal_types:
+                        self._fused_instance_checks(normal_types, pyx_code, env)
+                    if buffer_types or pythran_types:
+                        env.use_utility_code(Code.UtilityCode.load_cached("IsLittleEndian", "ModuleSetupCode.c"))
+                        self._buffer_checks(
+                            buffer_types, pythran_types, pyx_code, decl_code,
+                            arg.accept_none, env)
+                    if has_object_fallback:
+                        pyx_code.context.update(specialized_type_name='object')
+                        pyx_code.putln(self.match)
+                    else:
+                        pyx_code.putln(self.no_match)
+                    pyx_code.putln("break")
+
+                fused_index += 1
+                all_buffer_types.update(buffer_types)
+                all_buffer_types.update(ty.org_buffer for ty in pythran_types)
+
+            if arg.default:
+                default_idx += 1
+
+        if all_buffer_types:
+            self._buffer_declarations(pyx_code, decl_code, all_buffer_types, pythran_types)
+            env.use_utility_code(Code.UtilityCode.load_cached("Import", "ImportExport.c"))
+            env.use_utility_code(Code.UtilityCode.load_cached("ImportNumPyArray", "ImportExport.c"))
+
+        self._fused_signature_index(pyx_code)
+
+        pyx_code.put_chunk(
+            u"""
+                sigindex_matches = []
+                sigindex_candidates = [_fused_sigindex]
+
+                for dst_type in dest_sig:
+                    found_matches = []
+                    found_candidates = []
+                    # Make two separate lists: One for signature sub-trees
+                    #        with at least one definite match, and another for
+                    #        signature sub-trees with only ambiguous matches
+                    #        (where `dest_sig[i] is None`).
+                    if dst_type is None:
+                        for sn in sigindex_matches:
+                            found_matches.extend((<dict> sn).values())
+                        for sn in sigindex_candidates:
+                            found_candidates.extend((<dict> sn).values())
+                    else:
+                        for search_list in (sigindex_matches, sigindex_candidates):
+                            for sn in search_list:
+                                type_match = (<dict> sn).get(dst_type)
+                                if type_match is not None:
+                                    found_matches.append(type_match)
+                    sigindex_matches = found_matches
+                    sigindex_candidates = found_candidates
+                    if not (found_matches or found_candidates):
+                        break
+
+                candidates = sigindex_matches
+
+                if not candidates:
+                    raise TypeError("No matching signature found")
+                elif len(candidates) > 1:
+                    raise TypeError("Function call with ambiguous argument types")
+                else:
+                    return (<dict>signatures)[candidates[0]]
+            """)
+
+        fragment_code = pyx_code.getvalue()
+        # print decl_code.getvalue()
+        # print fragment_code
+        from .Optimize import ConstantFolding
+        fragment = TreeFragment.TreeFragment(
+            fragment_code, level='module', pipeline=[ConstantFolding()])
+        ast = TreeFragment.SetPosTransform(self.node.pos)(fragment.root)
+        UtilityCode.declare_declarations_in_scope(
+            decl_code.getvalue(), env.global_scope())
+        ast.scope = env
+        # FIXME: for static methods of cdef classes, we build the wrong signature here: first arg becomes 'self'
+        ast.analyse_declarations(env)
+        py_func = ast.stats[-1]  # the DefNode
+        self.fragment_scope = ast.scope
+
+        if isinstance(self.node, DefNode):
+            py_func.specialized_cpdefs = self.nodes[:]
+        else:
+            py_func.specialized_cpdefs = [n.py_func for n in self.nodes]
+
+        return py_func
+
+    def update_fused_defnode_entry(self, env):
+        copy_attributes = (
+            'name', 'pos', 'cname', 'func_cname', 'pyfunc_cname',
+            'pymethdef_cname', 'doc', 'doc_cname', 'is_member',
+            'scope'
+        )
+
+        entry = self.py_func.entry
+
+        for attr in copy_attributes:
+            setattr(entry, attr,
+                    getattr(self.orig_py_func.entry, attr))
+
+        self.py_func.name = self.orig_py_func.name
+        self.py_func.doc = self.orig_py_func.doc
+
+        env.entries.pop('__pyx_fused_cpdef', None)
+        if isinstance(self.node, DefNode):
+            env.entries[entry.name] = entry
+        else:
+            env.entries[entry.name].as_variable = entry
+
+        env.pyfunc_entries.append(entry)
+
+        self.py_func.entry.fused_cfunction = self
+        for node in self.nodes:
+            if isinstance(self.node, DefNode):
+                node.fused_py_func = self.py_func
+            else:
+                node.py_func.fused_py_func = self.py_func
+                node.entry.as_variable = entry
+
+        self.synthesize_defnodes()
+        self.stats.append(self.__signatures__)
+
+    def analyse_expressions(self, env):
+        """
+        Analyse the expressions. Take care to only evaluate default arguments
+        once and clone the result for all specializations
+        """
+        for fused_compound_type in self.fused_compound_types:
+            for fused_type in fused_compound_type.get_fused_types():
+                for specialization_type in fused_type.types:
+                    if specialization_type.is_complex:
+                        specialization_type.create_declaration_utility_code(env)
+
+        if self.py_func:
+            self.__signatures__ = self.__signatures__.analyse_expressions(env)
+            self.py_func = self.py_func.analyse_expressions(env)
+            self.resulting_fused_function = self.resulting_fused_function.analyse_expressions(env)
+            self.fused_func_assignment = self.fused_func_assignment.analyse_expressions(env)
+
+        self.defaults = defaults = []
+
+        for arg in self.node.args:
+            if arg.default:
+                arg.default = arg.default.analyse_expressions(env)
+                if arg.default.is_literal:
+                    defaults.append(copy.copy(arg.default))
+                else:
+                    # coerce the argument to temp since CloneNode really requires a temp
+                    defaults.append(ProxyNode(arg.default.coerce_to_temp(env)))
+            else:
+                defaults.append(None)
+
+        for i, stat in enumerate(self.stats):
+            stat = self.stats[i] = stat.analyse_expressions(env)
+            if isinstance(stat, FuncDefNode) and stat is not self.py_func:
+                # the dispatcher specifically doesn't want its defaults overriding
+                for arg, default in zip(stat.args, defaults):
+                    if default is not None:
+                        if default.is_literal:
+                            arg.default = default.coerce_to(arg.type, env)
+                        else:
+                            arg.default = CloneNode(default).analyse_expressions(env).coerce_to(arg.type, env)
+
+        if self.py_func:
+            args = [CloneNode(default) for default in defaults if default]
+            self.defaults_tuple = TupleNode(self.pos, args=args)
+            self.defaults_tuple = self.defaults_tuple.analyse_types(env, skip_children=True).coerce_to_pyobject(env)
+            self.defaults_tuple = ProxyNode(self.defaults_tuple)
+            self.code_object = ProxyNode(self.specialized_pycfuncs[0].code_object)
+
+            fused_func = self.resulting_fused_function.arg
+            fused_func.defaults_tuple = CloneNode(self.defaults_tuple)
+            fused_func.code_object = CloneNode(self.code_object)
+
+            for i, pycfunc in enumerate(self.specialized_pycfuncs):
+                pycfunc.code_object = CloneNode(self.code_object)
+                pycfunc = self.specialized_pycfuncs[i] = pycfunc.analyse_types(env)
+                pycfunc.defaults_tuple = CloneNode(self.defaults_tuple)
+        return self
+
+    def synthesize_defnodes(self):
+        """
+        Create the __signatures__ dict of PyCFunctionNode specializations.
+        """
+        if isinstance(self.nodes[0], CFuncDefNode):
+            nodes = [node.py_func for node in self.nodes]
+        else:
+            nodes = self.nodes
+
+        # For the moment, fused functions do not support METH_FASTCALL
+        for node in nodes:
+            node.entry.signature.use_fastcall = False
+
+        signatures = [StringEncoding.EncodedString(node.specialized_signature_string)
+                      for node in nodes]
+        keys = [ExprNodes.StringNode(node.pos, value=sig)
+                for node, sig in zip(nodes, signatures)]
+        values = [ExprNodes.PyCFunctionNode.from_defnode(node, binding=True)
+                  for node in nodes]
+
+        self.__signatures__ = ExprNodes.DictNode.from_pairs(self.pos, zip(keys, values))
+
+        self.specialized_pycfuncs = values
+        for pycfuncnode in values:
+            pycfuncnode.is_specialization = True
+
+    def generate_function_definitions(self, env, code):
+        if self.py_func:
+            self.py_func.pymethdef_required = True
+            self.fused_func_assignment.generate_function_definitions(env, code)
+
+        from . import Options
+        for stat in self.stats:
+            if isinstance(stat, FuncDefNode) and (
+                    stat.entry.used or
+                    (Options.cimport_from_pyx and not stat.entry.visibility == 'extern')):
+                code.mark_pos(stat.pos)
+                stat.generate_function_definitions(env, code)
+
+    def generate_execution_code(self, code):
+        # Note: all def function specialization are wrapped in PyCFunction
+        # nodes in the self.__signatures__ dictnode.
+        for default in self.defaults:
+            if default is not None:
+                default.generate_evaluation_code(code)
+
+        if self.py_func:
+            self.defaults_tuple.generate_evaluation_code(code)
+            self.code_object.generate_evaluation_code(code)
+
+        for stat in self.stats:
+            code.mark_pos(stat.pos)
+            if isinstance(stat, ExprNodes.ExprNode):
+                stat.generate_evaluation_code(code)
+            else:
+                stat.generate_execution_code(code)
+
+        if self.__signatures__:
+            self.resulting_fused_function.generate_evaluation_code(code)
+
+            code.putln(
+                "((__pyx_FusedFunctionObject *) %s)->__signatures__ = %s;" %
+                                    (self.resulting_fused_function.result(),
+                                     self.__signatures__.result()))
+            self.__signatures__.generate_giveref(code)
+            self.__signatures__.generate_post_assignment_code(code)
+            self.__signatures__.free_temps(code)
+
+            self.fused_func_assignment.generate_execution_code(code)
+
+            # Dispose of results
+            self.resulting_fused_function.generate_disposal_code(code)
+            self.resulting_fused_function.free_temps(code)
+            self.defaults_tuple.generate_disposal_code(code)
+            self.defaults_tuple.free_temps(code)
+            self.code_object.generate_disposal_code(code)
+            self.code_object.free_temps(code)
+
+        for default in self.defaults:
+            if default is not None:
+                default.generate_disposal_code(code)
+                default.free_temps(code)
+
+    def annotate(self, code):
+        for stat in self.stats:
+            stat.annotate(code)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Future.py

@@ -0,0 +1,16 @@
+def _get_feature(name):
+    import __future__
+    # fall back to a unique fake object for earlier Python versions or Python 3
+    return getattr(__future__, name, object())
+
+unicode_literals = _get_feature("unicode_literals")
+with_statement = _get_feature("with_statement")  # dummy
+division = _get_feature("division")
+print_function = _get_feature("print_function")
+absolute_import = _get_feature("absolute_import")
+nested_scopes = _get_feature("nested_scopes")  # dummy
+generators = _get_feature("generators")  # dummy
+generator_stop = _get_feature("generator_stop")
+annotations = _get_feature("annotations")
+
+del _get_feature

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Interpreter.py

@@ -0,0 +1,64 @@
+"""
+This module deals with interpreting the parse tree as Python
+would have done, in the compiler.
+
+For now this only covers parse tree to value conversion of
+compile-time values.
+"""
+
+from __future__ import absolute_import
+
+from .Nodes import *
+from .ExprNodes import *
+from .Errors import CompileError
+
+
+class EmptyScope(object):
+    def lookup(self, name):
+        return None
+
+empty_scope = EmptyScope()
+
+def interpret_compiletime_options(optlist, optdict, type_env=None, type_args=()):
+    """
+    Tries to interpret a list of compile time option nodes.
+    The result will be a tuple (optlist, optdict) but where
+    all expression nodes have been interpreted. The result is
+    in the form of tuples (value, pos).
+
+    optlist is a list of nodes, while optdict is a DictNode (the
+    result optdict is a dict)
+
+    If type_env is set, all type nodes will be analysed and the resulting
+    type set. Otherwise only interpretateable ExprNodes
+    are allowed, other nodes raises errors.
+
+    A CompileError will be raised if there are problems.
+    """
+
+    def interpret(node, ix):
+        if ix in type_args:
+            if type_env:
+                type = node.analyse_as_type(type_env)
+                if not type:
+                    raise CompileError(node.pos, "Invalid type.")
+                return (type, node.pos)
+            else:
+                raise CompileError(node.pos, "Type not allowed here.")
+        else:
+            if (sys.version_info[0] >=3 and
+                    isinstance(node, StringNode) and
+                    node.unicode_value is not None):
+                return (node.unicode_value, node.pos)
+            return (node.compile_time_value(empty_scope), node.pos)
+
+    if optlist:
+        optlist = [interpret(x, ix) for ix, x in enumerate(optlist)]
+    if optdict:
+        assert isinstance(optdict, DictNode)
+        new_optdict = {}
+        for item in optdict.key_value_pairs:
+            new_key, dummy = interpret(item.key, None)
+            new_optdict[new_key] = interpret(item.value, item.key.value)
+        optdict = new_optdict
+    return (optlist, new_optdict)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Lexicon.py

@@ -0,0 +1,342 @@
+# -*- coding: utf-8 -*-
+# cython: language_level=3, py2_import=True
+#
+#   Cython Scanner - Lexical Definitions
+#
+
+from __future__ import absolute_import, unicode_literals
+
+raw_prefixes = "rR"
+bytes_prefixes = "bB"
+string_prefixes = "fFuU" + bytes_prefixes
+char_prefixes = "cC"
+any_string_prefix = raw_prefixes + string_prefixes + char_prefixes
+IDENT = 'IDENT'
+
+
+def make_lexicon():
+    from ..Plex import \
+        Str, Any, AnyBut, AnyChar, Rep, Rep1, Opt, Bol, Eol, Eof, \
+        TEXT, IGNORE, Method, State, Lexicon, Range
+
+    nonzero_digit = Any("123456789")
+    digit = Any("0123456789")
+    bindigit = Any("01")
+    octdigit = Any("01234567")
+    hexdigit = Any("0123456789ABCDEFabcdef")
+    indentation = Bol + Rep(Any(" \t"))
+
+    # The list of valid unicode identifier characters are pretty slow to generate at runtime,
+    # and require Python3, so are just included directly here
+    # (via the generated code block at the bottom of the file)
+    unicode_start_character = (Any(unicode_start_ch_any) | Range(unicode_start_ch_range))
+    unicode_continuation_character = (
+        unicode_start_character |
+        Any(unicode_continuation_ch_any) | Range(unicode_continuation_ch_range))
+
+    def underscore_digits(d):
+        return Rep1(d) + Rep(Str("_") + Rep1(d))
+
+    def prefixed_digits(prefix, digits):
+        return prefix + Opt(Str("_")) + underscore_digits(digits)
+
+    decimal = underscore_digits(digit)
+    dot = Str(".")
+    exponent = Any("Ee") + Opt(Any("+-")) + decimal
+    decimal_fract = (decimal + dot + Opt(decimal)) | (dot + decimal)
+
+    #name = letter + Rep(letter | digit)
+    name = unicode_start_character + Rep(unicode_continuation_character)
+    intconst = (prefixed_digits(nonzero_digit, digit) |  # decimal literals with underscores must not start with '0'
+                (Str("0") + (prefixed_digits(Any("Xx"), hexdigit) |
+                             prefixed_digits(Any("Oo"), octdigit) |
+                             prefixed_digits(Any("Bb"), bindigit) )) |
+                underscore_digits(Str('0'))  # 0_0_0_0... is allowed as a decimal literal
+                | Rep1(digit)  # FIXME: remove these Py2 style decimal/octal literals (PY_VERSION_HEX < 3)
+                )
+    intsuffix = (Opt(Any("Uu")) + Opt(Any("Ll")) + Opt(Any("Ll"))) | (Opt(Any("Ll")) + Opt(Any("Ll")) + Opt(Any("Uu")))
+    intliteral = intconst + intsuffix
+    fltconst = (decimal_fract + Opt(exponent)) | (decimal + exponent)
+    imagconst = (intconst | fltconst) + Any("jJ")
+
+    # invalid combinations of prefixes are caught in p_string_literal
+    beginstring = Opt(Rep(Any(string_prefixes + raw_prefixes)) |
+                      Any(char_prefixes)
+                      ) + (Str("'") | Str('"') | Str("'''") | Str('"""'))
+    two_oct = octdigit + octdigit
+    three_oct = octdigit + octdigit + octdigit
+    two_hex = hexdigit + hexdigit
+    four_hex = two_hex + two_hex
+    escapeseq = Str("\\") + (two_oct | three_oct |
+                             Str('N{') + Rep(AnyBut('}')) + Str('}') |
+                             Str('u') + four_hex | Str('x') + two_hex |
+                             Str('U') + four_hex + four_hex | AnyChar)
+
+    bra = Any("([{")
+    ket = Any(")]}")
+    ellipsis = Str("...")
+    punct = Any(":,;+-*/|&<>=.%`~^?!@")
+    diphthong = Str("==", "<>", "!=", "<=", ">=", "<<", ">>", "**", "//",
+                    "+=", "-=", "*=", "/=", "%=", "|=", "^=", "&=",
+                    "<<=", ">>=", "**=", "//=", "->", "@=", "&&", "||", ':=')
+    spaces = Rep1(Any(" \t\f"))
+    escaped_newline = Str("\\\n")
+    lineterm = Eol + Opt(Str("\n"))
+
+    comment = Str("#") + Rep(AnyBut("\n"))
+
+    return Lexicon([
+        (name, Method('normalize_ident')),
+        (intliteral, Method('strip_underscores', symbol='INT')),
+        (fltconst, Method('strip_underscores', symbol='FLOAT')),
+        (imagconst, Method('strip_underscores', symbol='IMAG')),
+        (ellipsis | punct | diphthong, TEXT),
+
+        (bra, Method('open_bracket_action')),
+        (ket, Method('close_bracket_action')),
+        (lineterm, Method('newline_action')),
+
+        (beginstring, Method('begin_string_action')),
+
+        (comment, IGNORE),
+        (spaces, IGNORE),
+        (escaped_newline, IGNORE),
+
+        State('INDENT', [
+            (comment + lineterm, Method('commentline')),
+            (Opt(spaces) + Opt(comment) + lineterm, IGNORE),
+            (indentation, Method('indentation_action')),
+            (Eof, Method('eof_action'))
+        ]),
+
+        State('SQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut("'\"\n\\")), 'CHARS'),
+            (Str('"'), 'CHARS'),
+            (Str("\n"), Method('unclosed_string_action')),
+            (Str("'"), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('DQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut('"\n\\')), 'CHARS'),
+            (Str("'"), 'CHARS'),
+            (Str("\n"), Method('unclosed_string_action')),
+            (Str('"'), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('TSQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut("'\"\n\\")), 'CHARS'),
+            (Any("'\""), 'CHARS'),
+            (Str("\n"), 'NEWLINE'),
+            (Str("'''"), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        State('TDQ_STRING', [
+            (escapeseq, 'ESCAPE'),
+            (Rep1(AnyBut('"\'\n\\')), 'CHARS'),
+            (Any("'\""), 'CHARS'),
+            (Str("\n"), 'NEWLINE'),
+            (Str('"""'), Method('end_string_action')),
+            (Eof, 'EOF')
+        ]),
+
+        (Eof, Method('eof_action'))
+        ],
+
+        # FIXME: Plex 1.9 needs different args here from Plex 1.1.4
+        #debug_flags = scanner_debug_flags,
+        #debug_file = scanner_dump_file
+        )
+
+
+# BEGIN GENERATED CODE
+# Generated with 'cython-generate-lexicon.py' from:
+# cpython 3.12.0a7+ (heads/master:4cd1cc843a, Apr 11 2023, 10:32:26) [GCC 11.3.0]
+
+unicode_start_ch_any = (
+    u"\u005f\u00aa\u00b5\u00ba\u02ec\u02ee\u037f\u0386\u038c\u0559\u06d5"
+    u"\u06ff\u0710\u07b1\u07fa\u081a\u0824\u0828\u093d\u0950\u09b2\u09bd"
+    u"\u09ce\u09fc\u0a5e\u0abd\u0ad0\u0af9\u0b3d\u0b71\u0b83\u0b9c\u0bd0"
+    u"\u0c3d\u0c5d\u0c80\u0cbd\u0d3d\u0d4e\u0dbd\u0e32\u0e84\u0ea5\u0eb2"
+    u"\u0ebd\u0ec6\u0f00\u103f\u1061\u108e\u10c7\u10cd\u1258\u12c0\u17d7"
+    u"\u17dc\u18aa\u1aa7\u1cfa\u1f59\u1f5b\u1f5d\u1fbe\u2071\u207f\u2102"
+    u"\u2107\u2115\u2124\u2126\u2128\u214e\u2d27\u2d2d\u2d6f\ua7d3\ua8fb"
+    u"\ua9cf\uaa7a\uaab1\uaac0\uaac2\ufb1d\ufb3e\ufe71\ufe73\ufe77\ufe79"
+    u"\ufe7b\ufe7d\U00010808\U0001083c\U00010a00\U00010f27\U00011075\U00011144\U00011147\U00011176\U000111da"
+    u"\U000111dc\U00011288\U0001133d\U00011350\U000114c7\U00011644\U000116b8\U00011909\U0001193f\U00011941\U000119e1"
+    u"\U000119e3\U00011a00\U00011a3a\U00011a50\U00011a9d\U00011c40\U00011d46\U00011d98\U00011f02\U00011fb0\U00016f50"
+    u"\U00016fe3\U0001b132\U0001b155\U0001d4a2\U0001d4bb\U0001d546\U0001e14e\U0001e94b\U0001ee24\U0001ee27\U0001ee39"
+    u"\U0001ee3b\U0001ee42\U0001ee47\U0001ee49\U0001ee4b\U0001ee54\U0001ee57\U0001ee59\U0001ee5b\U0001ee5d\U0001ee5f"
+    u"\U0001ee64\U0001ee7e"
+)
+unicode_start_ch_range = (
+    u"\u0041\u005a\u0061\u007a\u00c0\u00d6\u00d8\u00f6\u00f8\u02c1\u02c6"
+    u"\u02d1\u02e0\u02e4\u0370\u0374\u0376\u0377\u037b\u037d\u0388\u038a"
+    u"\u038e\u03a1\u03a3\u03f5\u03f7\u0481\u048a\u052f\u0531\u0556\u0560"
+    u"\u0588\u05d0\u05ea\u05ef\u05f2\u0620\u064a\u066e\u066f\u0671\u06d3"
+    u"\u06e5\u06e6\u06ee\u06ef\u06fa\u06fc\u0712\u072f\u074d\u07a5\u07ca"
+    u"\u07ea\u07f4\u07f5\u0800\u0815\u0840\u0858\u0860\u086a\u0870\u0887"
+    u"\u0889\u088e\u08a0\u08c9\u0904\u0939\u0958\u0961\u0971\u0980\u0985"
+    u"\u098c\u098f\u0990\u0993\u09a8\u09aa\u09b0\u09b6\u09b9\u09dc\u09dd"
+    u"\u09df\u09e1\u09f0\u09f1\u0a05\u0a0a\u0a0f\u0a10\u0a13\u0a28\u0a2a"
+    u"\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59\u0a5c\u0a72\u0a74"
+    u"\u0a85\u0a8d\u0a8f\u0a91\u0a93\u0aa8\u0aaa\u0ab0\u0ab2\u0ab3\u0ab5"
+    u"\u0ab9\u0ae0\u0ae1\u0b05\u0b0c\u0b0f\u0b10\u0b13\u0b28\u0b2a\u0b30"
+    u"\u0b32\u0b33\u0b35\u0b39\u0b5c\u0b5d\u0b5f\u0b61\u0b85\u0b8a\u0b8e"
+    u"\u0b90\u0b92\u0b95\u0b99\u0b9a\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8\u0baa"
+    u"\u0bae\u0bb9\u0c05\u0c0c\u0c0e\u0c10\u0c12\u0c28\u0c2a\u0c39\u0c58"
+    u"\u0c5a\u0c60\u0c61\u0c85\u0c8c\u0c8e\u0c90\u0c92\u0ca8\u0caa\u0cb3"
+    u"\u0cb5\u0cb9\u0cdd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04\u0d0c\u0d0e"
+    u"\u0d10\u0d12\u0d3a\u0d54\u0d56\u0d5f\u0d61\u0d7a\u0d7f\u0d85\u0d96"
+    u"\u0d9a\u0db1\u0db3\u0dbb\u0dc0\u0dc6\u0e01\u0e30\u0e40\u0e46\u0e81"
+    u"\u0e82\u0e86\u0e8a\u0e8c\u0ea3\u0ea7\u0eb0\u0ec0\u0ec4\u0edc\u0edf"
+    u"\u0f40\u0f47\u0f49\u0f6c\u0f88\u0f8c\u1000\u102a\u1050\u1055\u105a"
+    u"\u105d\u1065\u1066\u106e\u1070\u1075\u1081\u10a0\u10c5\u10d0\u10fa"
+    u"\u10fc\u1248\u124a\u124d\u1250\u1256\u125a\u125d\u1260\u1288\u128a"
+    u"\u128d\u1290\u12b0\u12b2\u12b5\u12b8\u12be\u12c2\u12c5\u12c8\u12d6"
+    u"\u12d8\u1310\u1312\u1315\u1318\u135a\u1380\u138f\u13a0\u13f5\u13f8"
+    u"\u13fd\u1401\u166c\u166f\u167f\u1681\u169a\u16a0\u16ea\u16ee\u16f8"
+    u"\u1700\u1711\u171f\u1731\u1740\u1751\u1760\u176c\u176e\u1770\u1780"
+    u"\u17b3\u1820\u1878\u1880\u18a8\u18b0\u18f5\u1900\u191e\u1950\u196d"
+    u"\u1970\u1974\u1980\u19ab\u19b0\u19c9\u1a00\u1a16\u1a20\u1a54\u1b05"
+    u"\u1b33\u1b45\u1b4c\u1b83\u1ba0\u1bae\u1baf\u1bba\u1be5\u1c00\u1c23"
+    u"\u1c4d\u1c4f\u1c5a\u1c7d\u1c80\u1c88\u1c90\u1cba\u1cbd\u1cbf\u1ce9"
+    u"\u1cec\u1cee\u1cf3\u1cf5\u1cf6\u1d00\u1dbf\u1e00\u1f15\u1f18\u1f1d"
+    u"\u1f20\u1f45\u1f48\u1f4d\u1f50\u1f57\u1f5f\u1f7d\u1f80\u1fb4\u1fb6"
+    u"\u1fbc\u1fc2\u1fc4\u1fc6\u1fcc\u1fd0\u1fd3\u1fd6\u1fdb\u1fe0\u1fec"
+    u"\u1ff2\u1ff4\u1ff6\u1ffc\u2090\u209c\u210a\u2113\u2118\u211d\u212a"
+    u"\u2139\u213c\u213f\u2145\u2149\u2160\u2188\u2c00\u2ce4\u2ceb\u2cee"
+    u"\u2cf2\u2cf3\u2d00\u2d25\u2d30\u2d67\u2d80\u2d96\u2da0\u2da6\u2da8"
+    u"\u2dae\u2db0\u2db6\u2db8\u2dbe\u2dc0\u2dc6\u2dc8\u2dce\u2dd0\u2dd6"
+    u"\u2dd8\u2dde\u3005\u3007\u3021\u3029\u3031\u3035\u3038\u303c\u3041"
+    u"\u3096\u309d\u309f\u30a1\u30fa\u30fc\u30ff\u3105\u312f\u3131\u318e"
+    u"\u31a0\u31bf\u31f0\u31ff\u3400\u4dbf\u4e00\ua48c\ua4d0\ua4fd\ua500"
+    u"\ua60c\ua610\ua61f\ua62a\ua62b\ua640\ua66e\ua67f\ua69d\ua6a0\ua6ef"
+    u"\ua717\ua71f\ua722\ua788\ua78b\ua7ca\ua7d0\ua7d1\ua7d5\ua7d9\ua7f2"
+    u"\ua801\ua803\ua805\ua807\ua80a\ua80c\ua822\ua840\ua873\ua882\ua8b3"
+    u"\ua8f2\ua8f7\ua8fd\ua8fe\ua90a\ua925\ua930\ua946\ua960\ua97c\ua984"
+    u"\ua9b2\ua9e0\ua9e4\ua9e6\ua9ef\ua9fa\ua9fe\uaa00\uaa28\uaa40\uaa42"
+    u"\uaa44\uaa4b\uaa60\uaa76\uaa7e\uaaaf\uaab5\uaab6\uaab9\uaabd\uaadb"
+    u"\uaadd\uaae0\uaaea\uaaf2\uaaf4\uab01\uab06\uab09\uab0e\uab11\uab16"
+    u"\uab20\uab26\uab28\uab2e\uab30\uab5a\uab5c\uab69\uab70\uabe2\uac00"
+    u"\ud7a3\ud7b0\ud7c6\ud7cb\ud7fb\uf900\ufa6d\ufa70\ufad9\ufb00\ufb06"
+    u"\ufb13\ufb17\ufb1f\ufb28\ufb2a\ufb36\ufb38\ufb3c\ufb40\ufb41\ufb43"
+    u"\ufb44\ufb46\ufbb1\ufbd3\ufc5d\ufc64\ufd3d\ufd50\ufd8f\ufd92\ufdc7"
+    u"\ufdf0\ufdf9\ufe7f\ufefc\uff21\uff3a\uff41\uff5a\uff66\uff9d\uffa0"
+    u"\uffbe\uffc2\uffc7\uffca\uffcf\uffd2\uffd7\uffda\uffdc\U00010000\U0001000b"
+    u"\U0001000d\U00010026\U00010028\U0001003a\U0001003c\U0001003d\U0001003f\U0001004d\U00010050\U0001005d\U00010080"
+    u"\U000100fa\U00010140\U00010174\U00010280\U0001029c\U000102a0\U000102d0\U00010300\U0001031f\U0001032d\U0001034a"
+    u"\U00010350\U00010375\U00010380\U0001039d\U000103a0\U000103c3\U000103c8\U000103cf\U000103d1\U000103d5\U00010400"
+    u"\U0001049d\U000104b0\U000104d3\U000104d8\U000104fb\U00010500\U00010527\U00010530\U00010563\U00010570\U0001057a"
+    u"\U0001057c\U0001058a\U0001058c\U00010592\U00010594\U00010595\U00010597\U000105a1\U000105a3\U000105b1\U000105b3"
+    u"\U000105b9\U000105bb\U000105bc\U00010600\U00010736\U00010740\U00010755\U00010760\U00010767\U00010780\U00010785"
+    u"\U00010787\U000107b0\U000107b2\U000107ba\U00010800\U00010805\U0001080a\U00010835\U00010837\U00010838\U0001083f"
+    u"\U00010855\U00010860\U00010876\U00010880\U0001089e\U000108e0\U000108f2\U000108f4\U000108f5\U00010900\U00010915"
+    u"\U00010920\U00010939\U00010980\U000109b7\U000109be\U000109bf\U00010a10\U00010a13\U00010a15\U00010a17\U00010a19"
+    u"\U00010a35\U00010a60\U00010a7c\U00010a80\U00010a9c\U00010ac0\U00010ac7\U00010ac9\U00010ae4\U00010b00\U00010b35"
+    u"\U00010b40\U00010b55\U00010b60\U00010b72\U00010b80\U00010b91\U00010c00\U00010c48\U00010c80\U00010cb2\U00010cc0"
+    u"\U00010cf2\U00010d00\U00010d23\U00010e80\U00010ea9\U00010eb0\U00010eb1\U00010f00\U00010f1c\U00010f30\U00010f45"
+    u"\U00010f70\U00010f81\U00010fb0\U00010fc4\U00010fe0\U00010ff6\U00011003\U00011037\U00011071\U00011072\U00011083"
+    u"\U000110af\U000110d0\U000110e8\U00011103\U00011126\U00011150\U00011172\U00011183\U000111b2\U000111c1\U000111c4"
+    u"\U00011200\U00011211\U00011213\U0001122b\U0001123f\U00011240\U00011280\U00011286\U0001128a\U0001128d\U0001128f"
+    u"\U0001129d\U0001129f\U000112a8\U000112b0\U000112de\U00011305\U0001130c\U0001130f\U00011310\U00011313\U00011328"
+    u"\U0001132a\U00011330\U00011332\U00011333\U00011335\U00011339\U0001135d\U00011361\U00011400\U00011434\U00011447"
+    u"\U0001144a\U0001145f\U00011461\U00011480\U000114af\U000114c4\U000114c5\U00011580\U000115ae\U000115d8\U000115db"
+    u"\U00011600\U0001162f\U00011680\U000116aa\U00011700\U0001171a\U00011740\U00011746\U00011800\U0001182b\U000118a0"
+    u"\U000118df\U000118ff\U00011906\U0001190c\U00011913\U00011915\U00011916\U00011918\U0001192f\U000119a0\U000119a7"
+    u"\U000119aa\U000119d0\U00011a0b\U00011a32\U00011a5c\U00011a89\U00011ab0\U00011af8\U00011c00\U00011c08\U00011c0a"
+    u"\U00011c2e\U00011c72\U00011c8f\U00011d00\U00011d06\U00011d08\U00011d09\U00011d0b\U00011d30\U00011d60\U00011d65"
+    u"\U00011d67\U00011d68\U00011d6a\U00011d89\U00011ee0\U00011ef2\U00011f04\U00011f10\U00011f12\U00011f33\U00012000"
+    u"\U00012399\U00012400\U0001246e\U00012480\U00012543\U00012f90\U00012ff0\U00013000\U0001342f\U00013441\U00013446"
+    u"\U00014400\U00014646\U00016800\U00016a38\U00016a40\U00016a5e\U00016a70\U00016abe\U00016ad0\U00016aed\U00016b00"
+    u"\U00016b2f\U00016b40\U00016b43\U00016b63\U00016b77\U00016b7d\U00016b8f\U00016e40\U00016e7f\U00016f00\U00016f4a"
+    u"\U00016f93\U00016f9f\U00016fe0\U00016fe1\U00017000\U000187f7\U00018800\U00018cd5\U00018d00\U00018d08\U0001aff0"
+    u"\U0001aff3\U0001aff5\U0001affb\U0001affd\U0001affe\U0001b000\U0001b122\U0001b150\U0001b152\U0001b164\U0001b167"
+    u"\U0001b170\U0001b2fb\U0001bc00\U0001bc6a\U0001bc70\U0001bc7c\U0001bc80\U0001bc88\U0001bc90\U0001bc99\U0001d400"
+    u"\U0001d454\U0001d456\U0001d49c\U0001d49e\U0001d49f\U0001d4a5\U0001d4a6\U0001d4a9\U0001d4ac\U0001d4ae\U0001d4b9"
+    u"\U0001d4bd\U0001d4c3\U0001d4c5\U0001d505\U0001d507\U0001d50a\U0001d50d\U0001d514\U0001d516\U0001d51c\U0001d51e"
+    u"\U0001d539\U0001d53b\U0001d53e\U0001d540\U0001d544\U0001d54a\U0001d550\U0001d552\U0001d6a5\U0001d6a8\U0001d6c0"
+    u"\U0001d6c2\U0001d6da\U0001d6dc\U0001d6fa\U0001d6fc\U0001d714\U0001d716\U0001d734\U0001d736\U0001d74e\U0001d750"
+    u"\U0001d76e\U0001d770\U0001d788\U0001d78a\U0001d7a8\U0001d7aa\U0001d7c2\U0001d7c4\U0001d7cb\U0001df00\U0001df1e"
+    u"\U0001df25\U0001df2a\U0001e030\U0001e06d\U0001e100\U0001e12c\U0001e137\U0001e13d\U0001e290\U0001e2ad\U0001e2c0"
+    u"\U0001e2eb\U0001e4d0\U0001e4eb\U0001e7e0\U0001e7e6\U0001e7e8\U0001e7eb\U0001e7ed\U0001e7ee\U0001e7f0\U0001e7fe"
+    u"\U0001e800\U0001e8c4\U0001e900\U0001e943\U0001ee00\U0001ee03\U0001ee05\U0001ee1f\U0001ee21\U0001ee22\U0001ee29"
+    u"\U0001ee32\U0001ee34\U0001ee37\U0001ee4d\U0001ee4f\U0001ee51\U0001ee52\U0001ee61\U0001ee62\U0001ee67\U0001ee6a"
+    u"\U0001ee6c\U0001ee72\U0001ee74\U0001ee77\U0001ee79\U0001ee7c\U0001ee80\U0001ee89\U0001ee8b\U0001ee9b\U0001eea1"
+    u"\U0001eea3\U0001eea5\U0001eea9\U0001eeab\U0001eebb\U00020000\U0002a6df\U0002a700\U0002b739\U0002b740\U0002b81d"
+    u"\U0002b820\U0002cea1\U0002ceb0\U0002ebe0\U0002f800\U0002fa1d\U00030000\U0003134a"
+)
+unicode_continuation_ch_any = (
+    u"\u00b7\u0387\u05bf\u05c7\u0670\u0711\u07fd\u09bc\u09d7\u09fe\u0a3c"
+    u"\u0a51\u0a75\u0abc\u0b3c\u0b82\u0bd7\u0c3c\u0cbc\u0cf3\u0d57\u0dca"
+    u"\u0dd6\u0e31\u0eb1\u0f35\u0f37\u0f39\u0fc6\u17dd\u18a9\u1ced\u1cf4"
+    u"\u2054\u20e1\u2d7f\ua66f\ua802\ua806\ua80b\ua82c\ua9e5\uaa43\uaab0"
+    u"\uaac1\ufb1e\uff3f\U000101fd\U000102e0\U00010a3f\U000110c2\U00011173\U0001123e\U00011241\U00011357"
+    u"\U0001145e\U00011940\U000119e4\U00011a47\U00011d3a\U00011d47\U00011f03\U00013440\U00016f4f\U00016fe4\U0001da75"
+    u"\U0001da84\U0001e08f\U0001e2ae"
+)
+unicode_continuation_ch_range = (
+    u"\u0030\u0039\u0300\u036f\u0483\u0487\u0591\u05bd\u05c1\u05c2\u05c4"
+    u"\u05c5\u0610\u061a\u064b\u0669\u06d6\u06dc\u06df\u06e4\u06e7\u06e8"
+    u"\u06ea\u06ed\u06f0\u06f9\u0730\u074a\u07a6\u07b0\u07c0\u07c9\u07eb"
+    u"\u07f3\u0816\u0819\u081b\u0823\u0825\u0827\u0829\u082d\u0859\u085b"
+    u"\u0898\u089f\u08ca\u08e1\u08e3\u0903\u093a\u093c\u093e\u094f\u0951"
+    u"\u0957\u0962\u0963\u0966\u096f\u0981\u0983\u09be\u09c4\u09c7\u09c8"
+    u"\u09cb\u09cd\u09e2\u09e3\u09e6\u09ef\u0a01\u0a03\u0a3e\u0a42\u0a47"
+    u"\u0a48\u0a4b\u0a4d\u0a66\u0a71\u0a81\u0a83\u0abe\u0ac5\u0ac7\u0ac9"
+    u"\u0acb\u0acd\u0ae2\u0ae3\u0ae6\u0aef\u0afa\u0aff\u0b01\u0b03\u0b3e"
+    u"\u0b44\u0b47\u0b48\u0b4b\u0b4d\u0b55\u0b57\u0b62\u0b63\u0b66\u0b6f"
+    u"\u0bbe\u0bc2\u0bc6\u0bc8\u0bca\u0bcd\u0be6\u0bef\u0c00\u0c04\u0c3e"
+    u"\u0c44\u0c46\u0c48\u0c4a\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66\u0c6f"
+    u"\u0c81\u0c83\u0cbe\u0cc4\u0cc6\u0cc8\u0cca\u0ccd\u0cd5\u0cd6\u0ce2"
+    u"\u0ce3\u0ce6\u0cef\u0d00\u0d03\u0d3b\u0d3c\u0d3e\u0d44\u0d46\u0d48"
+    u"\u0d4a\u0d4d\u0d62\u0d63\u0d66\u0d6f\u0d81\u0d83\u0dcf\u0dd4\u0dd8"
+    u"\u0ddf\u0de6\u0def\u0df2\u0df3\u0e33\u0e3a\u0e47\u0e4e\u0e50\u0e59"
+    u"\u0eb3\u0ebc\u0ec8\u0ece\u0ed0\u0ed9\u0f18\u0f19\u0f20\u0f29\u0f3e"
+    u"\u0f3f\u0f71\u0f84\u0f86\u0f87\u0f8d\u0f97\u0f99\u0fbc\u102b\u103e"
+    u"\u1040\u1049\u1056\u1059\u105e\u1060\u1062\u1064\u1067\u106d\u1071"
+    u"\u1074\u1082\u108d\u108f\u109d\u135d\u135f\u1369\u1371\u1712\u1715"
+    u"\u1732\u1734\u1752\u1753\u1772\u1773\u17b4\u17d3\u17e0\u17e9\u180b"
+    u"\u180d\u180f\u1819\u1920\u192b\u1930\u193b\u1946\u194f\u19d0\u19da"
+    u"\u1a17\u1a1b\u1a55\u1a5e\u1a60\u1a7c\u1a7f\u1a89\u1a90\u1a99\u1ab0"
+    u"\u1abd\u1abf\u1ace\u1b00\u1b04\u1b34\u1b44\u1b50\u1b59\u1b6b\u1b73"
+    u"\u1b80\u1b82\u1ba1\u1bad\u1bb0\u1bb9\u1be6\u1bf3\u1c24\u1c37\u1c40"
+    u"\u1c49\u1c50\u1c59\u1cd0\u1cd2\u1cd4\u1ce8\u1cf7\u1cf9\u1dc0\u1dff"
+    u"\u203f\u2040\u20d0\u20dc\u20e5\u20f0\u2cef\u2cf1\u2de0\u2dff\u302a"
+    u"\u302f\u3099\u309a\ua620\ua629\ua674\ua67d\ua69e\ua69f\ua6f0\ua6f1"
+    u"\ua823\ua827\ua880\ua881\ua8b4\ua8c5\ua8d0\ua8d9\ua8e0\ua8f1\ua8ff"
+    u"\ua909\ua926\ua92d\ua947\ua953\ua980\ua983\ua9b3\ua9c0\ua9d0\ua9d9"
+    u"\ua9f0\ua9f9\uaa29\uaa36\uaa4c\uaa4d\uaa50\uaa59\uaa7b\uaa7d\uaab2"
+    u"\uaab4\uaab7\uaab8\uaabe\uaabf\uaaeb\uaaef\uaaf5\uaaf6\uabe3\uabea"
+    u"\uabec\uabed\uabf0\uabf9\ufe00\ufe0f\ufe20\ufe2f\ufe33\ufe34\ufe4d"
+    u"\ufe4f\uff10\uff19\uff9e\uff9f\U00010376\U0001037a\U000104a0\U000104a9\U00010a01\U00010a03"
+    u"\U00010a05\U00010a06\U00010a0c\U00010a0f\U00010a38\U00010a3a\U00010ae5\U00010ae6\U00010d24\U00010d27\U00010d30"
+    u"\U00010d39\U00010eab\U00010eac\U00010efd\U00010eff\U00010f46\U00010f50\U00010f82\U00010f85\U00011000\U00011002"
+    u"\U00011038\U00011046\U00011066\U00011070\U00011073\U00011074\U0001107f\U00011082\U000110b0\U000110ba\U000110f0"
+    u"\U000110f9\U00011100\U00011102\U00011127\U00011134\U00011136\U0001113f\U00011145\U00011146\U00011180\U00011182"
+    u"\U000111b3\U000111c0\U000111c9\U000111cc\U000111ce\U000111d9\U0001122c\U00011237\U000112df\U000112ea\U000112f0"
+    u"\U000112f9\U00011300\U00011303\U0001133b\U0001133c\U0001133e\U00011344\U00011347\U00011348\U0001134b\U0001134d"
+    u"\U00011362\U00011363\U00011366\U0001136c\U00011370\U00011374\U00011435\U00011446\U00011450\U00011459\U000114b0"
+    u"\U000114c3\U000114d0\U000114d9\U000115af\U000115b5\U000115b8\U000115c0\U000115dc\U000115dd\U00011630\U00011640"
+    u"\U00011650\U00011659\U000116ab\U000116b7\U000116c0\U000116c9\U0001171d\U0001172b\U00011730\U00011739\U0001182c"
+    u"\U0001183a\U000118e0\U000118e9\U00011930\U00011935\U00011937\U00011938\U0001193b\U0001193e\U00011942\U00011943"
+    u"\U00011950\U00011959\U000119d1\U000119d7\U000119da\U000119e0\U00011a01\U00011a0a\U00011a33\U00011a39\U00011a3b"
+    u"\U00011a3e\U00011a51\U00011a5b\U00011a8a\U00011a99\U00011c2f\U00011c36\U00011c38\U00011c3f\U00011c50\U00011c59"
+    u"\U00011c92\U00011ca7\U00011ca9\U00011cb6\U00011d31\U00011d36\U00011d3c\U00011d3d\U00011d3f\U00011d45\U00011d50"
+    u"\U00011d59\U00011d8a\U00011d8e\U00011d90\U00011d91\U00011d93\U00011d97\U00011da0\U00011da9\U00011ef3\U00011ef6"
+    u"\U00011f00\U00011f01\U00011f34\U00011f3a\U00011f3e\U00011f42\U00011f50\U00011f59\U00013447\U00013455\U00016a60"
+    u"\U00016a69\U00016ac0\U00016ac9\U00016af0\U00016af4\U00016b30\U00016b36\U00016b50\U00016b59\U00016f51\U00016f87"
+    u"\U00016f8f\U00016f92\U00016ff0\U00016ff1\U0001bc9d\U0001bc9e\U0001cf00\U0001cf2d\U0001cf30\U0001cf46\U0001d165"
+    u"\U0001d169\U0001d16d\U0001d172\U0001d17b\U0001d182\U0001d185\U0001d18b\U0001d1aa\U0001d1ad\U0001d242\U0001d244"
+    u"\U0001d7ce\U0001d7ff\U0001da00\U0001da36\U0001da3b\U0001da6c\U0001da9b\U0001da9f\U0001daa1\U0001daaf\U0001e000"
+    u"\U0001e006\U0001e008\U0001e018\U0001e01b\U0001e021\U0001e023\U0001e024\U0001e026\U0001e02a\U0001e130\U0001e136"
+    u"\U0001e140\U0001e149\U0001e2ec\U0001e2f9\U0001e4ec\U0001e4f9\U0001e8d0\U0001e8d6\U0001e944\U0001e94a\U0001e950"
+    u"\U0001e959\U0001fbf0\U0001fbf9"
+)
+
+# END GENERATED CODE

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Main.py

@@ -0,0 +1,789 @@
+#
+#   Cython Top Level
+#
+
+from __future__ import absolute_import, print_function
+
+import os
+import re
+import sys
+import io
+
+if sys.version_info[:2] < (2, 7) or (3, 0) <= sys.version_info[:2] < (3, 3):
+    sys.stderr.write("Sorry, Cython requires Python 2.7 or 3.3+, found %d.%d\n" % tuple(sys.version_info[:2]))
+    sys.exit(1)
+
+try:
+    from __builtin__ import basestring
+except ImportError:
+    basestring = str
+
+# Do not import Parsing here, import it when needed, because Parsing imports
+# Nodes, which globally needs debug command line options initialized to set a
+# conditional metaclass. These options are processed by CmdLine called from
+# main() in this file.
+# import Parsing
+from . import Errors
+from .StringEncoding import EncodedString
+from .Scanning import PyrexScanner, FileSourceDescriptor
+from .Errors import PyrexError, CompileError, error, warning
+from .Symtab import ModuleScope
+from .. import Utils
+from . import Options
+from .Options import CompilationOptions, default_options
+from .CmdLine import parse_command_line
+from .Lexicon import (unicode_start_ch_any, unicode_continuation_ch_any,
+                      unicode_start_ch_range, unicode_continuation_ch_range)
+
+
+def _make_range_re(chrs):
+    out = []
+    for i in range(0, len(chrs), 2):
+        out.append(u"{0}-{1}".format(chrs[i], chrs[i+1]))
+    return u"".join(out)
+
+# py2 version looked like r"[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)*$"
+module_name_pattern = u"[{0}{1}][{0}{2}{1}{3}]*".format(
+    unicode_start_ch_any, _make_range_re(unicode_start_ch_range),
+    unicode_continuation_ch_any,
+    _make_range_re(unicode_continuation_ch_range))
+module_name_pattern = re.compile(u"{0}(\\.{0})*$".format(module_name_pattern))
+
+
+standard_include_path = os.path.abspath(
+    os.path.join(os.path.dirname(os.path.dirname(__file__)), 'Includes'))
+
+
+class Context(object):
+    #  This class encapsulates the context needed for compiling
+    #  one or more Cython implementation files along with their
+    #  associated and imported declaration files. It includes
+    #  the root of the module import namespace and the list
+    #  of directories to search for include files.
+    #
+    #  modules               {string : ModuleScope}
+    #  include_directories   [string]
+    #  future_directives     [object]
+    #  language_level        int     currently 2 or 3 for Python 2/3
+
+    cython_scope = None
+    language_level = None  # warn when not set but default to Py2
+
+    def __init__(self, include_directories, compiler_directives, cpp=False,
+                 language_level=None, options=None):
+        # cython_scope is a hack, set to False by subclasses, in order to break
+        # an infinite loop.
+        # Better code organization would fix it.
+
+        from . import Builtin, CythonScope
+        self.modules = {"__builtin__" : Builtin.builtin_scope}
+        self.cython_scope = CythonScope.create_cython_scope(self)
+        self.modules["cython"] = self.cython_scope
+        self.include_directories = include_directories
+        self.future_directives = set()
+        self.compiler_directives = compiler_directives
+        self.cpp = cpp
+        self.options = options
+
+        self.pxds = {}  # full name -> node tree
+        self._interned = {}  # (type(value), value, *key_args) -> interned_value
+
+        if language_level is not None:
+            self.set_language_level(language_level)
+
+        self.legacy_implicit_noexcept = self.compiler_directives.get('legacy_implicit_noexcept', False)
+
+        self.gdb_debug_outputwriter = None
+
+    @classmethod
+    def from_options(cls, options):
+        return cls(options.include_path, options.compiler_directives,
+                   options.cplus, options.language_level, options=options)
+
+    def set_language_level(self, level):
+        from .Future import print_function, unicode_literals, absolute_import, division, generator_stop
+        future_directives = set()
+        if level == '3str':
+            level = 3
+        else:
+            level = int(level)
+            if level >= 3:
+                future_directives.add(unicode_literals)
+        if level >= 3:
+            future_directives.update([print_function, absolute_import, division, generator_stop])
+        self.language_level = level
+        self.future_directives = future_directives
+        if level >= 3:
+            self.modules['builtins'] = self.modules['__builtin__']
+
+    def intern_ustring(self, value, encoding=None):
+        key = (EncodedString, value, encoding)
+        try:
+            return self._interned[key]
+        except KeyError:
+            pass
+        value = EncodedString(value)
+        if encoding:
+            value.encoding = encoding
+        self._interned[key] = value
+        return value
+
+    # pipeline creation functions can now be found in Pipeline.py
+
+    def process_pxd(self, source_desc, scope, module_name):
+        from . import Pipeline
+        if isinstance(source_desc, FileSourceDescriptor) and source_desc._file_type == 'pyx':
+            source = CompilationSource(source_desc, module_name, os.getcwd())
+            result_sink = create_default_resultobj(source, self.options)
+            pipeline = Pipeline.create_pyx_as_pxd_pipeline(self, result_sink)
+            result = Pipeline.run_pipeline(pipeline, source)
+        else:
+            pipeline = Pipeline.create_pxd_pipeline(self, scope, module_name)
+            result = Pipeline.run_pipeline(pipeline, source_desc)
+        return result
+
+    def nonfatal_error(self, exc):
+        return Errors.report_error(exc)
+
+    def _split_qualified_name(self, qualified_name, relative_import=False):
+        # Splits qualified_name into parts in form of 2-tuples: (PART_NAME, IS_PACKAGE).
+        qualified_name_parts = qualified_name.split('.')
+        last_part = qualified_name_parts.pop()
+        qualified_name_parts = [(p, True) for p in qualified_name_parts]
+        if last_part != '__init__':
+            # If Last part is __init__, then it is omitted. Otherwise, we need to check whether we can find
+            # __init__.pyx/__init__.py file to determine if last part is package or not.
+            is_package = False
+            for suffix in ('.py', '.pyx'):
+                path = self.search_include_directories(
+                    qualified_name, suffix=suffix, source_pos=None, source_file_path=None, sys_path=not relative_import)
+                if path:
+                    is_package = self._is_init_file(path)
+                    break
+
+            qualified_name_parts.append((last_part, is_package))
+        return qualified_name_parts
+
+    @staticmethod
+    def _is_init_file(path):
+        return os.path.basename(path) in ('__init__.pyx', '__init__.py', '__init__.pxd') if path else False
+
+    @staticmethod
+    def _check_pxd_filename(pos, pxd_pathname, qualified_name):
+        if not pxd_pathname:
+            return
+        pxd_filename = os.path.basename(pxd_pathname)
+        if '.' in qualified_name and qualified_name == os.path.splitext(pxd_filename)[0]:
+            warning(pos, "Dotted filenames ('%s') are deprecated."
+                    " Please use the normal Python package directory layout." % pxd_filename, level=1)
+
+    def find_module(self, module_name, from_module=None, pos=None, need_pxd=1,
+                    absolute_fallback=True, relative_import=False):
+        # Finds and returns the module scope corresponding to
+        # the given relative or absolute module name. If this
+        # is the first time the module has been requested, finds
+        # the corresponding .pxd file and process it.
+        # If from_module is not None, it must be a module scope,
+        # and the module will first be searched for relative to
+        # that module, provided its name is not a dotted name.
+        debug_find_module = 0
+        if debug_find_module:
+            print("Context.find_module: module_name = %s, from_module = %s, pos = %s, need_pxd = %s" % (
+                module_name, from_module, pos, need_pxd))
+
+        scope = None
+        pxd_pathname = None
+        if from_module:
+            if module_name:
+                # from .module import ...
+                qualified_name = from_module.qualify_name(module_name)
+            else:
+                # from . import ...
+                qualified_name = from_module.qualified_name
+                scope = from_module
+                from_module = None
+        else:
+            qualified_name = module_name
+
+        if not module_name_pattern.match(qualified_name):
+            raise CompileError(pos or (module_name, 0, 0),
+                               u"'%s' is not a valid module name" % module_name)
+
+        if from_module:
+            if debug_find_module:
+                print("...trying relative import")
+            scope = from_module.lookup_submodule(module_name)
+            if not scope:
+                pxd_pathname = self.find_pxd_file(qualified_name, pos, sys_path=not relative_import)
+                self._check_pxd_filename(pos, pxd_pathname, qualified_name)
+                if pxd_pathname:
+                    is_package = self._is_init_file(pxd_pathname)
+                    scope = from_module.find_submodule(module_name, as_package=is_package)
+        if not scope:
+            if debug_find_module:
+                print("...trying absolute import")
+            if absolute_fallback:
+                qualified_name = module_name
+            scope = self
+            for name, is_package in self._split_qualified_name(qualified_name, relative_import=relative_import):
+                scope = scope.find_submodule(name, as_package=is_package)
+        if debug_find_module:
+            print("...scope = %s" % scope)
+        if not scope.pxd_file_loaded:
+            if debug_find_module:
+                print("...pxd not loaded")
+            if not pxd_pathname:
+                if debug_find_module:
+                    print("...looking for pxd file")
+                # Only look in sys.path if we are explicitly looking
+                # for a .pxd file.
+                pxd_pathname = self.find_pxd_file(qualified_name, pos, sys_path=need_pxd and not relative_import)
+                self._check_pxd_filename(pos, pxd_pathname, qualified_name)
+                if debug_find_module:
+                    print("......found %s" % pxd_pathname)
+                if not pxd_pathname and need_pxd:
+                    # Set pxd_file_loaded such that we don't need to
+                    # look for the non-existing pxd file next time.
+                    scope.pxd_file_loaded = True
+                    package_pathname = self.search_include_directories(
+                        qualified_name, suffix=".py", source_pos=pos, sys_path=not relative_import)
+                    if package_pathname and package_pathname.endswith(Utils.PACKAGE_FILES):
+                        pass
+                    else:
+                        error(pos, "'%s.pxd' not found" % qualified_name.replace('.', os.sep))
+            if pxd_pathname:
+                scope.pxd_file_loaded = True
+                try:
+                    if debug_find_module:
+                        print("Context.find_module: Parsing %s" % pxd_pathname)
+                    rel_path = module_name.replace('.', os.sep) + os.path.splitext(pxd_pathname)[1]
+                    if not pxd_pathname.endswith(rel_path):
+                        rel_path = pxd_pathname  # safety measure to prevent printing incorrect paths
+                    source_desc = FileSourceDescriptor(pxd_pathname, rel_path)
+                    err, result = self.process_pxd(source_desc, scope, qualified_name)
+                    if err:
+                        raise err
+                    (pxd_codenodes, pxd_scope) = result
+                    self.pxds[module_name] = (pxd_codenodes, pxd_scope)
+                except CompileError:
+                    pass
+        return scope
+
+    def find_pxd_file(self, qualified_name, pos=None, sys_path=True, source_file_path=None):
+        # Search include path (and sys.path if sys_path is True) for
+        # the .pxd file corresponding to the given fully-qualified
+        # module name.
+        # Will find either a dotted filename or a file in a
+        # package directory. If a source file position is given,
+        # the directory containing the source file is searched first
+        # for a dotted filename, and its containing package root
+        # directory is searched first for a non-dotted filename.
+        pxd = self.search_include_directories(
+            qualified_name, suffix=".pxd", source_pos=pos, sys_path=sys_path, source_file_path=source_file_path)
+        if pxd is None and Options.cimport_from_pyx:
+            return self.find_pyx_file(qualified_name, pos, sys_path=sys_path)
+        return pxd
+
+    def find_pyx_file(self, qualified_name, pos=None, sys_path=True, source_file_path=None):
+        # Search include path for the .pyx file corresponding to the
+        # given fully-qualified module name, as for find_pxd_file().
+        return self.search_include_directories(
+            qualified_name, suffix=".pyx", source_pos=pos, sys_path=sys_path, source_file_path=source_file_path)
+
+    def find_include_file(self, filename, pos=None, source_file_path=None):
+        # Search list of include directories for filename.
+        # Reports an error and returns None if not found.
+        path = self.search_include_directories(
+            filename, source_pos=pos, include=True, source_file_path=source_file_path)
+        if not path:
+            error(pos, "'%s' not found" % filename)
+        return path
+
+    def search_include_directories(self, qualified_name,
+                                   suffix=None, source_pos=None, include=False, sys_path=False, source_file_path=None):
+        include_dirs = self.include_directories
+        if sys_path:
+            include_dirs = include_dirs + sys.path
+        # include_dirs must be hashable for caching in @cached_function
+        include_dirs = tuple(include_dirs + [standard_include_path])
+        return search_include_directories(
+            include_dirs, qualified_name, suffix or "", source_pos, include, source_file_path)
+
+    def find_root_package_dir(self, file_path):
+        return Utils.find_root_package_dir(file_path)
+
+    def check_package_dir(self, dir, package_names):
+        return Utils.check_package_dir(dir, tuple(package_names))
+
+    def c_file_out_of_date(self, source_path, output_path):
+        if not os.path.exists(output_path):
+            return 1
+        c_time = Utils.modification_time(output_path)
+        if Utils.file_newer_than(source_path, c_time):
+            return 1
+        pxd_path = Utils.replace_suffix(source_path, ".pxd")
+        if os.path.exists(pxd_path) and Utils.file_newer_than(pxd_path, c_time):
+            return 1
+        for kind, name in self.read_dependency_file(source_path):
+            if kind == "cimport":
+                dep_path = self.find_pxd_file(name, source_file_path=source_path)
+            elif kind == "include":
+                dep_path = self.search_include_directories(name, source_file_path=source_path)
+            else:
+                continue
+            if dep_path and Utils.file_newer_than(dep_path, c_time):
+                return 1
+        return 0
+
+    def find_cimported_module_names(self, source_path):
+        return [ name for kind, name in self.read_dependency_file(source_path)
+                 if kind == "cimport" ]
+
+    def is_package_dir(self, dir_path):
+        return Utils.is_package_dir(dir_path)
+
+    def read_dependency_file(self, source_path):
+        dep_path = Utils.replace_suffix(source_path, ".dep")
+        if os.path.exists(dep_path):
+            with open(dep_path, "rU") as f:
+                chunks = [ line.split(" ", 1)
+                           for line in (l.strip() for l in f)
+                           if " " in line ]
+            return chunks
+        else:
+            return ()
+
+    def lookup_submodule(self, name):
+        # Look up a top-level module. Returns None if not found.
+        return self.modules.get(name, None)
+
+    def find_submodule(self, name, as_package=False):
+        # Find a top-level module, creating a new one if needed.
+        scope = self.lookup_submodule(name)
+        if not scope:
+            scope = ModuleScope(name,
+                parent_module = None, context = self, is_package=as_package)
+            self.modules[name] = scope
+        return scope
+
+    def parse(self, source_desc, scope, pxd, full_module_name):
+        if not isinstance(source_desc, FileSourceDescriptor):
+            raise RuntimeError("Only file sources for code supported")
+        source_filename = source_desc.filename
+        scope.cpp = self.cpp
+        # Parse the given source file and return a parse tree.
+        num_errors = Errors.get_errors_count()
+        try:
+            with Utils.open_source_file(source_filename) as f:
+                from . import Parsing
+                s = PyrexScanner(f, source_desc, source_encoding = f.encoding,
+                                 scope = scope, context = self)
+                tree = Parsing.p_module(s, pxd, full_module_name)
+                if self.options.formal_grammar:
+                    try:
+                        from ..Parser import ConcreteSyntaxTree
+                    except ImportError:
+                        raise RuntimeError(
+                            "Formal grammar can only be used with compiled Cython with an available pgen.")
+                    ConcreteSyntaxTree.p_module(source_filename)
+        except UnicodeDecodeError as e:
+            #import traceback
+            #traceback.print_exc()
+            raise self._report_decode_error(source_desc, e)
+
+        if Errors.get_errors_count() > num_errors:
+            raise CompileError()
+        return tree
+
+    def _report_decode_error(self, source_desc, exc):
+        msg = exc.args[-1]
+        position = exc.args[2]
+        encoding = exc.args[0]
+
+        line = 1
+        column = idx = 0
+        with io.open(source_desc.filename, "r", encoding='iso8859-1', newline='') as f:
+            for line, data in enumerate(f, 1):
+                idx += len(data)
+                if idx >= position:
+                    column = position - (idx - len(data)) + 1
+                    break
+
+        return error((source_desc, line, column),
+                     "Decoding error, missing or incorrect coding=<encoding-name> "
+                     "at top of source (cannot decode with encoding %r: %s)" % (encoding, msg))
+
+    def extract_module_name(self, path, options):
+        # Find fully_qualified module name from the full pathname
+        # of a source file.
+        dir, filename = os.path.split(path)
+        module_name, _ = os.path.splitext(filename)
+        if "." in module_name:
+            return module_name
+        names = [module_name]
+        while self.is_package_dir(dir):
+            parent, package_name = os.path.split(dir)
+            if parent == dir:
+                break
+            names.append(package_name)
+            dir = parent
+        names.reverse()
+        return ".".join(names)
+
+    def setup_errors(self, options, result):
+        Errors.init_thread()
+        if options.use_listing_file:
+            path = result.listing_file = Utils.replace_suffix(result.main_source_file, ".lis")
+        else:
+            path = None
+        Errors.open_listing_file(path=path, echo_to_stderr=options.errors_to_stderr)
+
+    def teardown_errors(self, err, options, result):
+        source_desc = result.compilation_source.source_desc
+        if not isinstance(source_desc, FileSourceDescriptor):
+            raise RuntimeError("Only file sources for code supported")
+        Errors.close_listing_file()
+        result.num_errors = Errors.get_errors_count()
+        if result.num_errors > 0:
+            err = True
+        if err and result.c_file:
+            try:
+                Utils.castrate_file(result.c_file, os.stat(source_desc.filename))
+            except EnvironmentError:
+                pass
+            result.c_file = None
+
+
+def get_output_filename(source_filename, cwd, options):
+    if options.cplus:
+        c_suffix = ".cpp"
+    else:
+        c_suffix = ".c"
+    suggested_file_name = Utils.replace_suffix(source_filename, c_suffix)
+    if options.output_file:
+        out_path = os.path.join(cwd, options.output_file)
+        if os.path.isdir(out_path):
+            return os.path.join(out_path, os.path.basename(suggested_file_name))
+        else:
+            return out_path
+    else:
+        return suggested_file_name
+
+
+def create_default_resultobj(compilation_source, options):
+    result = CompilationResult()
+    result.main_source_file = compilation_source.source_desc.filename
+    result.compilation_source = compilation_source
+    source_desc = compilation_source.source_desc
+    result.c_file = get_output_filename(source_desc.filename,
+                        compilation_source.cwd, options)
+    result.embedded_metadata = options.embedded_metadata
+    return result
+
+
+def run_pipeline(source, options, full_module_name=None, context=None):
+    from . import Pipeline
+
+    # ensure that the inputs are unicode (for Python 2)
+    if sys.version_info[0] == 2:
+        source = Utils.decode_filename(source)
+        if full_module_name:
+            full_module_name = Utils.decode_filename(full_module_name)
+
+    source_ext = os.path.splitext(source)[1]
+    options.configure_language_defaults(source_ext[1:])  # py/pyx
+    if context is None:
+        context = Context.from_options(options)
+
+    # Set up source object
+    cwd = os.getcwd()
+    abs_path = os.path.abspath(source)
+    full_module_name = full_module_name or context.extract_module_name(source, options)
+    full_module_name = EncodedString(full_module_name)
+
+    Utils.raise_error_if_module_name_forbidden(full_module_name)
+
+    if options.relative_path_in_code_position_comments:
+        rel_path = full_module_name.replace('.', os.sep) + source_ext
+        if not abs_path.endswith(rel_path):
+            rel_path = source  # safety measure to prevent printing incorrect paths
+    else:
+        rel_path = abs_path
+    source_desc = FileSourceDescriptor(abs_path, rel_path)
+    source = CompilationSource(source_desc, full_module_name, cwd)
+
+    # Set up result object
+    result = create_default_resultobj(source, options)
+
+    if options.annotate is None:
+        # By default, decide based on whether an html file already exists.
+        html_filename = os.path.splitext(result.c_file)[0] + ".html"
+        if os.path.exists(html_filename):
+            with io.open(html_filename, "r", encoding="UTF-8") as html_file:
+                if u'<!-- Generated by Cython' in html_file.read(100):
+                    options.annotate = True
+
+    # Get pipeline
+    if source_ext.lower() == '.py' or not source_ext:
+        pipeline = Pipeline.create_py_pipeline(context, options, result)
+    else:
+        pipeline = Pipeline.create_pyx_pipeline(context, options, result)
+
+    context.setup_errors(options, result)
+
+    if '.' in full_module_name and '.' in os.path.splitext(os.path.basename(abs_path))[0]:
+        warning((source_desc, 1, 0),
+                "Dotted filenames ('%s') are deprecated."
+                " Please use the normal Python package directory layout." % os.path.basename(abs_path), level=1)
+
+    err, enddata = Pipeline.run_pipeline(pipeline, source)
+    context.teardown_errors(err, options, result)
+    if err is None and options.depfile:
+        from ..Build.Dependencies import create_dependency_tree
+        dependencies = create_dependency_tree(context).all_dependencies(result.main_source_file)
+        Utils.write_depfile(result.c_file, result.main_source_file, dependencies)
+    return result
+
+
+# ------------------------------------------------------------------------
+#
+#  Main Python entry points
+#
+# ------------------------------------------------------------------------
+
+class CompilationSource(object):
+    """
+    Contains the data necessary to start up a compilation pipeline for
+    a single compilation unit.
+    """
+    def __init__(self, source_desc, full_module_name, cwd):
+        self.source_desc = source_desc
+        self.full_module_name = full_module_name
+        self.cwd = cwd
+
+
+class CompilationResult(object):
+    """
+    Results from the Cython compiler:
+
+    c_file           string or None   The generated C source file
+    h_file           string or None   The generated C header file
+    i_file           string or None   The generated .pxi file
+    api_file         string or None   The generated C API .h file
+    listing_file     string or None   File of error messages
+    object_file      string or None   Result of compiling the C file
+    extension_file   string or None   Result of linking the object file
+    num_errors       integer          Number of compilation errors
+    compilation_source CompilationSource
+    """
+
+    def __init__(self):
+        self.c_file = None
+        self.h_file = None
+        self.i_file = None
+        self.api_file = None
+        self.listing_file = None
+        self.object_file = None
+        self.extension_file = None
+        self.main_source_file = None
+
+
+class CompilationResultSet(dict):
+    """
+    Results from compiling multiple Pyrex source files. A mapping
+    from source file paths to CompilationResult instances. Also
+    has the following attributes:
+
+    num_errors   integer   Total number of compilation errors
+    """
+
+    num_errors = 0
+
+    def add(self, source, result):
+        self[source] = result
+        self.num_errors += result.num_errors
+
+
+def compile_single(source, options, full_module_name = None):
+    """
+    compile_single(source, options, full_module_name)
+
+    Compile the given Pyrex implementation file and return a CompilationResult.
+    Always compiles a single file; does not perform timestamp checking or
+    recursion.
+    """
+    return run_pipeline(source, options, full_module_name)
+
+
+def compile_multiple(sources, options):
+    """
+    compile_multiple(sources, options)
+
+    Compiles the given sequence of Pyrex implementation files and returns
+    a CompilationResultSet. Performs timestamp checking and/or recursion
+    if these are specified in the options.
+    """
+    if len(sources) > 1 and options.module_name:
+        raise RuntimeError('Full module name can only be set '
+                           'for single source compilation')
+    # run_pipeline creates the context
+    # context = Context.from_options(options)
+    sources = [os.path.abspath(source) for source in sources]
+    processed = set()
+    results = CompilationResultSet()
+    timestamps = options.timestamps
+    verbose = options.verbose
+    context = None
+    cwd = os.getcwd()
+    for source in sources:
+        if source not in processed:
+            if context is None:
+                context = Context.from_options(options)
+            output_filename = get_output_filename(source, cwd, options)
+            out_of_date = context.c_file_out_of_date(source, output_filename)
+            if (not timestamps) or out_of_date:
+                if verbose:
+                    sys.stderr.write("Compiling %s\n" % source)
+                result = run_pipeline(source, options,
+                                      full_module_name=options.module_name,
+                                      context=context)
+                results.add(source, result)
+                # Compiling multiple sources in one context doesn't quite
+                # work properly yet.
+                context = None
+            processed.add(source)
+    return results
+
+
+def compile(source, options = None, full_module_name = None, **kwds):
+    """
+    compile(source [, options], [, <option> = <value>]...)
+
+    Compile one or more Pyrex implementation files, with optional timestamp
+    checking and recursing on dependencies.  The source argument may be a string
+    or a sequence of strings.  If it is a string and no recursion or timestamp
+    checking is requested, a CompilationResult is returned, otherwise a
+    CompilationResultSet is returned.
+    """
+    options = CompilationOptions(defaults = options, **kwds)
+    if isinstance(source, basestring):
+        if not options.timestamps:
+            return compile_single(source, options, full_module_name)
+        source = [source]
+    return compile_multiple(source, options)
+
+
+@Utils.cached_function
+def search_include_directories(dirs, qualified_name, suffix="", pos=None, include=False, source_file_path=None):
+    """
+    Search the list of include directories for the given file name.
+
+    If a source file path or position is given, first searches the directory
+    containing that file.  Returns None if not found, but does not report an error.
+
+    The 'include' option will disable package dereferencing.
+    """
+    if pos and not source_file_path:
+        file_desc = pos[0]
+        if not isinstance(file_desc, FileSourceDescriptor):
+            raise RuntimeError("Only file sources for code supported")
+        source_file_path = file_desc.filename
+    if source_file_path:
+        if include:
+            dirs = (os.path.dirname(source_file_path),) + dirs
+        else:
+            dirs = (Utils.find_root_package_dir(source_file_path),) + dirs
+
+    # search for dotted filename e.g. <dir>/foo.bar.pxd
+    dotted_filename = qualified_name
+    if suffix:
+        dotted_filename += suffix
+
+    for dirname in dirs:
+        path = os.path.join(dirname, dotted_filename)
+        if os.path.exists(path):
+            return path
+
+    # search for filename in package structure e.g. <dir>/foo/bar.pxd or <dir>/foo/bar/__init__.pxd
+    if not include:
+
+        names = qualified_name.split('.')
+        package_names = tuple(names[:-1])
+        module_name = names[-1]
+
+        # search for standard packages first - PEP420
+        namespace_dirs = []
+        for dirname in dirs:
+            package_dir, is_namespace = Utils.check_package_dir(dirname, package_names)
+            if package_dir is not None:
+                if is_namespace:
+                    namespace_dirs.append(package_dir)
+                    continue
+                path = search_module_in_dir(package_dir, module_name, suffix)
+                if path:
+                    return path
+
+        # search for namespaces second - PEP420
+        for package_dir in namespace_dirs:
+            path = search_module_in_dir(package_dir, module_name, suffix)
+            if path:
+                return path
+
+    return None
+
+
+@Utils.cached_function
+def search_module_in_dir(package_dir, module_name, suffix):
+    # matches modules of the form: <dir>/foo/bar.pxd
+    path = Utils.find_versioned_file(package_dir, module_name, suffix)
+
+    # matches modules of the form: <dir>/foo/bar/__init__.pxd
+    if not path and suffix:
+        path = Utils.find_versioned_file(os.path.join(package_dir, module_name), "__init__", suffix)
+
+    return path
+
+
+# ------------------------------------------------------------------------
+#
+#  Main command-line entry point
+#
+# ------------------------------------------------------------------------
+
+def setuptools_main():
+    return main(command_line = 1)
+
+
+def main(command_line = 0):
+    args = sys.argv[1:]
+    any_failures = 0
+    if command_line:
+        try:
+            options, sources = parse_command_line(args)
+        except IOError as e:
+            # TODO: IOError can be replaced with FileNotFoundError in Cython 3.1
+            import errno
+            if errno.ENOENT != e.errno:
+                # Raised IOError is not caused by missing file.
+                raise
+            print("{}: No such file or directory: '{}'".format(sys.argv[0], e.filename), file=sys.stderr)
+            sys.exit(1)
+    else:
+        options = CompilationOptions(default_options)
+        sources = args
+
+    if options.show_version:
+        Utils.print_version()
+
+    if options.working_path!="":
+        os.chdir(options.working_path)
+
+    try:
+        result = compile(sources, options)
+        if result.num_errors > 0:
+            any_failures = 1
+    except (EnvironmentError, PyrexError) as e:
+        sys.stderr.write(str(e) + '\n')
+        any_failures = 1
+    if any_failures:
+        sys.exit(1)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/MemoryView.py

@@ -0,0 +1,863 @@
+from __future__ import absolute_import
+
+from .Errors import CompileError, error
+from . import ExprNodes
+from .ExprNodes import IntNode, NameNode, AttributeNode
+from . import Options
+from .Code import UtilityCode, TempitaUtilityCode
+from .UtilityCode import CythonUtilityCode
+from . import Buffer
+from . import PyrexTypes
+from . import ModuleNode
+
+START_ERR = "Start must not be given."
+STOP_ERR = "Axis specification only allowed in the 'step' slot."
+STEP_ERR = "Step must be omitted, 1, or a valid specifier."
+BOTH_CF_ERR = "Cannot specify an array that is both C and Fortran contiguous."
+INVALID_ERR = "Invalid axis specification."
+NOT_CIMPORTED_ERR = "Variable was not cimported from cython.view"
+EXPR_ERR = "no expressions allowed in axis spec, only names and literals."
+CF_ERR = "Invalid axis specification for a C/Fortran contiguous array."
+ERR_UNINITIALIZED = ("Cannot check if memoryview %s is initialized without the "
+                     "GIL, consider using initializedcheck(False)")
+
+
+format_flag = "PyBUF_FORMAT"
+
+memview_c_contiguous = "(PyBUF_C_CONTIGUOUS | PyBUF_FORMAT)"
+memview_f_contiguous = "(PyBUF_F_CONTIGUOUS | PyBUF_FORMAT)"
+memview_any_contiguous = "(PyBUF_ANY_CONTIGUOUS | PyBUF_FORMAT)"
+memview_full_access = "PyBUF_FULL_RO"
+#memview_strided_access = "PyBUF_STRIDED_RO"
+memview_strided_access = "PyBUF_RECORDS_RO"
+
+MEMVIEW_DIRECT = '__Pyx_MEMVIEW_DIRECT'
+MEMVIEW_PTR    = '__Pyx_MEMVIEW_PTR'
+MEMVIEW_FULL   = '__Pyx_MEMVIEW_FULL'
+MEMVIEW_CONTIG = '__Pyx_MEMVIEW_CONTIG'
+MEMVIEW_STRIDED= '__Pyx_MEMVIEW_STRIDED'
+MEMVIEW_FOLLOW = '__Pyx_MEMVIEW_FOLLOW'
+
+_spec_to_const = {
+        'direct' : MEMVIEW_DIRECT,
+        'ptr'    : MEMVIEW_PTR,
+        'full'   : MEMVIEW_FULL,
+        'contig' : MEMVIEW_CONTIG,
+        'strided': MEMVIEW_STRIDED,
+        'follow' : MEMVIEW_FOLLOW,
+        }
+
+_spec_to_abbrev = {
+    'direct'  : 'd',
+    'ptr'     : 'p',
+    'full'    : 'f',
+    'contig'  : 'c',
+    'strided' : 's',
+    'follow'  : '_',
+}
+
+memslice_entry_init = "{ 0, 0, { 0 }, { 0 }, { 0 } }"
+
+memview_name = u'memoryview'
+memview_typeptr_cname = '__pyx_memoryview_type'
+memview_objstruct_cname = '__pyx_memoryview_obj'
+memviewslice_cname = u'__Pyx_memviewslice'
+
+
+def put_init_entry(mv_cname, code):
+    code.putln("%s.data = NULL;" % mv_cname)
+    code.putln("%s.memview = NULL;" % mv_cname)
+
+
+#def axes_to_str(axes):
+#    return "".join([access[0].upper()+packing[0] for (access, packing) in axes])
+
+
+def put_acquire_memoryviewslice(lhs_cname, lhs_type, lhs_pos, rhs, code,
+                                have_gil=False, first_assignment=True):
+    "We can avoid decreffing the lhs if we know it is the first assignment"
+    assert rhs.type.is_memoryviewslice
+
+    pretty_rhs = rhs.result_in_temp() or rhs.is_simple()
+    if pretty_rhs:
+        rhstmp = rhs.result()
+    else:
+        rhstmp = code.funcstate.allocate_temp(lhs_type, manage_ref=False)
+        code.putln("%s = %s;" % (rhstmp, rhs.result_as(lhs_type)))
+
+    # Allow uninitialized assignment
+    #code.putln(code.put_error_if_unbound(lhs_pos, rhs.entry))
+    put_assign_to_memviewslice(lhs_cname, rhs, rhstmp, lhs_type, code,
+                               have_gil=have_gil, first_assignment=first_assignment)
+
+    if not pretty_rhs:
+        code.funcstate.release_temp(rhstmp)
+
+
+def put_assign_to_memviewslice(lhs_cname, rhs, rhs_cname, memviewslicetype, code,
+                               have_gil=False, first_assignment=False):
+    if lhs_cname == rhs_cname:
+        # self assignment is tricky because memoryview xdecref clears the memoryview
+        # thus invalidating both sides of the assignment. Therefore make it actually do nothing
+        code.putln("/* memoryview self assignment no-op */")
+        return
+
+    if not first_assignment:
+        code.put_xdecref(lhs_cname, memviewslicetype,
+                         have_gil=have_gil)
+
+    if not rhs.result_in_temp():
+        rhs.make_owned_memoryviewslice(code)
+
+    code.putln("%s = %s;" % (lhs_cname, rhs_cname))
+
+
+def get_buf_flags(specs):
+    is_c_contig, is_f_contig = is_cf_contig(specs)
+
+    if is_c_contig:
+        return memview_c_contiguous
+    elif is_f_contig:
+        return memview_f_contiguous
+
+    access, packing = zip(*specs)
+
+    if 'full' in access or 'ptr' in access:
+        return memview_full_access
+    else:
+        return memview_strided_access
+
+
+def insert_newaxes(memoryviewtype, n):
+    axes = [('direct', 'strided')] * n
+    axes.extend(memoryviewtype.axes)
+    return PyrexTypes.MemoryViewSliceType(memoryviewtype.dtype, axes)
+
+
+def broadcast_types(src, dst):
+    n = abs(src.ndim - dst.ndim)
+    if src.ndim < dst.ndim:
+        return insert_newaxes(src, n), dst
+    else:
+        return src, insert_newaxes(dst, n)
+
+
+def valid_memslice_dtype(dtype, i=0):
+    """
+    Return whether type dtype can be used as the base type of a
+    memoryview slice.
+
+    We support structs, numeric types and objects
+    """
+    if dtype.is_complex and dtype.real_type.is_int:
+        return False
+
+    if dtype is PyrexTypes.c_bint_type:
+        return False
+
+    if dtype.is_struct and dtype.kind == 'struct':
+        for member in dtype.scope.var_entries:
+            if not valid_memslice_dtype(member.type):
+                return False
+
+        return True
+
+    return (
+        dtype.is_error or
+        # Pointers are not valid (yet)
+        # (dtype.is_ptr and valid_memslice_dtype(dtype.base_type)) or
+        (dtype.is_array and i < 8 and
+         valid_memslice_dtype(dtype.base_type, i + 1)) or
+        dtype.is_numeric or
+        dtype.is_pyobject or
+        dtype.is_fused or  # accept this as it will be replaced by specializations later
+        (dtype.is_typedef and valid_memslice_dtype(dtype.typedef_base_type))
+    )
+
+
+class MemoryViewSliceBufferEntry(Buffer.BufferEntry):
+    """
+    May be used during code generation time to be queried for
+    shape/strides/suboffsets attributes, or to perform indexing or slicing.
+    """
+    def __init__(self, entry):
+        self.entry = entry
+        self.type = entry.type
+        self.cname = entry.cname
+
+        self.buf_ptr = "%s.data" % self.cname
+
+        dtype = self.entry.type.dtype
+        self.buf_ptr_type = PyrexTypes.CPtrType(dtype)
+        self.init_attributes()
+
+    def get_buf_suboffsetvars(self):
+        return self._for_all_ndim("%s.suboffsets[%d]")
+
+    def get_buf_stridevars(self):
+        return self._for_all_ndim("%s.strides[%d]")
+
+    def get_buf_shapevars(self):
+        return self._for_all_ndim("%s.shape[%d]")
+
+    def generate_buffer_lookup_code(self, code, index_cnames):
+        axes = [(dim, index_cnames[dim], access, packing)
+                    for dim, (access, packing) in enumerate(self.type.axes)]
+        return self._generate_buffer_lookup_code(code, axes)
+
+    def _generate_buffer_lookup_code(self, code, axes, cast_result=True):
+        """
+        Generate a single expression that indexes the memory view slice
+        in each dimension.
+        """
+        bufp = self.buf_ptr
+        type_decl = self.type.dtype.empty_declaration_code()
+
+        for dim, index, access, packing in axes:
+            shape = "%s.shape[%d]" % (self.cname, dim)
+            stride = "%s.strides[%d]" % (self.cname, dim)
+            suboffset = "%s.suboffsets[%d]" % (self.cname, dim)
+
+            flag = get_memoryview_flag(access, packing)
+
+            if flag in ("generic", "generic_contiguous"):
+                # Note: we cannot do cast tricks to avoid stride multiplication
+                #       for generic_contiguous, as we may have to do (dtype *)
+                #       or (dtype **) arithmetic, we won't know which unless
+                #       we check suboffsets
+                code.globalstate.use_utility_code(memviewslice_index_helpers)
+                bufp = ('__pyx_memviewslice_index_full(%s, %s, %s, %s)' %
+                                            (bufp, index, stride, suboffset))
+
+            elif flag == "indirect":
+                bufp = "(%s + %s * %s)" % (bufp, index, stride)
+                bufp = ("(*((char **) %s) + %s)" % (bufp, suboffset))
+
+            elif flag == "indirect_contiguous":
+                # Note: we do char ** arithmetic
+                bufp = "(*((char **) %s + %s) + %s)" % (bufp, index, suboffset)
+
+            elif flag == "strided":
+                bufp = "(%s + %s * %s)" % (bufp, index, stride)
+
+            else:
+                assert flag == 'contiguous', flag
+                bufp = '((char *) (((%s *) %s) + %s))' % (type_decl, bufp, index)
+
+            bufp = '( /* dim=%d */ %s )' % (dim, bufp)
+
+        if cast_result:
+            return "((%s *) %s)" % (type_decl, bufp)
+
+        return bufp
+
+    def generate_buffer_slice_code(self, code, indices, dst, dst_type, have_gil,
+                                   have_slices, directives):
+        """
+        Slice a memoryviewslice.
+
+        indices     - list of index nodes. If not a SliceNode, or NoneNode,
+                      then it must be coercible to Py_ssize_t
+
+        Simply call __pyx_memoryview_slice_memviewslice with the right
+        arguments, unless the dimension is omitted or a bare ':', in which
+        case we copy over the shape/strides/suboffsets attributes directly
+        for that dimension.
+        """
+        src = self.cname
+
+        code.putln("%(dst)s.data = %(src)s.data;" % locals())
+        code.putln("%(dst)s.memview = %(src)s.memview;" % locals())
+        code.put_incref_memoryviewslice(dst, dst_type, have_gil=have_gil)
+
+        all_dimensions_direct = all(access == 'direct' for access, packing in self.type.axes)
+        suboffset_dim_temp = []
+
+        def get_suboffset_dim():
+            # create global temp variable at request
+            if not suboffset_dim_temp:
+                suboffset_dim = code.funcstate.allocate_temp(PyrexTypes.c_int_type, manage_ref=False)
+                code.putln("%s = -1;" % suboffset_dim)
+                suboffset_dim_temp.append(suboffset_dim)
+            return suboffset_dim_temp[0]
+
+        dim = -1
+        new_ndim = 0
+        for index in indices:
+            if index.is_none:
+                # newaxis
+                for attrib, value in [('shape', 1), ('strides', 0), ('suboffsets', -1)]:
+                    code.putln("%s.%s[%d] = %d;" % (dst, attrib, new_ndim, value))
+
+                new_ndim += 1
+                continue
+
+            dim += 1
+            access, packing = self.type.axes[dim]
+
+            if index.is_slice:
+                # slice, unspecified dimension, or part of ellipsis
+                d = dict(locals())
+                for s in "start stop step".split():
+                    idx = getattr(index, s)
+                    have_idx = d['have_' + s] = not idx.is_none
+                    d[s] = idx.result() if have_idx else "0"
+
+                if not (d['have_start'] or d['have_stop'] or d['have_step']):
+                    # full slice (:), simply copy over the extent, stride
+                    # and suboffset. Also update suboffset_dim if needed
+                    d['access'] = access
+                    util_name = "SimpleSlice"
+                else:
+                    util_name = "ToughSlice"
+                    d['error_goto'] = code.error_goto(index.pos)
+
+                new_ndim += 1
+            else:
+                # normal index
+                idx = index.result()
+
+                indirect = access != 'direct'
+                if indirect:
+                    generic = access == 'full'
+                    if new_ndim != 0:
+                        return error(index.pos,
+                                     "All preceding dimensions must be "
+                                     "indexed and not sliced")
+
+                d = dict(
+                    locals(),
+                    wraparound=int(directives['wraparound']),
+                    boundscheck=int(directives['boundscheck']),
+                )
+                if d['boundscheck']:
+                    d['error_goto'] = code.error_goto(index.pos)
+                util_name = "SliceIndex"
+
+            _, impl = TempitaUtilityCode.load_as_string(util_name, "MemoryView_C.c", context=d)
+            code.put(impl)
+
+        if suboffset_dim_temp:
+            code.funcstate.release_temp(suboffset_dim_temp[0])
+
+
+def empty_slice(pos):
+    none = ExprNodes.NoneNode(pos)
+    return ExprNodes.SliceNode(pos, start=none,
+                               stop=none, step=none)
+
+
+def unellipsify(indices, ndim):
+    result = []
+    seen_ellipsis = False
+    have_slices = False
+
+    newaxes = [newaxis for newaxis in indices if newaxis.is_none]
+    n_indices = len(indices) - len(newaxes)
+
+    for index in indices:
+        if isinstance(index, ExprNodes.EllipsisNode):
+            have_slices = True
+            full_slice = empty_slice(index.pos)
+
+            if seen_ellipsis:
+                result.append(full_slice)
+            else:
+                nslices = ndim - n_indices + 1
+                result.extend([full_slice] * nslices)
+                seen_ellipsis = True
+        else:
+            have_slices = have_slices or index.is_slice or index.is_none
+            result.append(index)
+
+    result_length = len(result) - len(newaxes)
+    if result_length < ndim:
+        have_slices = True
+        nslices = ndim - result_length
+        result.extend([empty_slice(indices[-1].pos)] * nslices)
+
+    return have_slices, result, newaxes
+
+
+def get_memoryview_flag(access, packing):
+    if access == 'full' and packing in ('strided', 'follow'):
+        return 'generic'
+    elif access == 'full' and packing == 'contig':
+        return 'generic_contiguous'
+    elif access == 'ptr' and packing in ('strided', 'follow'):
+        return 'indirect'
+    elif access == 'ptr' and packing == 'contig':
+        return 'indirect_contiguous'
+    elif access == 'direct' and packing in ('strided', 'follow'):
+        return 'strided'
+    else:
+        assert (access, packing) == ('direct', 'contig'), (access, packing)
+        return 'contiguous'
+
+
+def get_is_contig_func_name(contig_type, ndim):
+    assert contig_type in ('C', 'F')
+    return "__pyx_memviewslice_is_contig_%s%d" % (contig_type, ndim)
+
+
+def get_is_contig_utility(contig_type, ndim):
+    assert contig_type in ('C', 'F')
+    C = dict(context, ndim=ndim, contig_type=contig_type)
+    utility = load_memview_c_utility("MemviewSliceCheckContig", C, requires=[is_contig_utility])
+    return utility
+
+
+def slice_iter(slice_type, slice_result, ndim, code, force_strided=False):
+    if (slice_type.is_c_contig or slice_type.is_f_contig) and not force_strided:
+        return ContigSliceIter(slice_type, slice_result, ndim, code)
+    else:
+        return StridedSliceIter(slice_type, slice_result, ndim, code)
+
+
+class SliceIter(object):
+    def __init__(self, slice_type, slice_result, ndim, code):
+        self.slice_type = slice_type
+        self.slice_result = slice_result
+        self.code = code
+        self.ndim = ndim
+
+
+class ContigSliceIter(SliceIter):
+    def start_loops(self):
+        code = self.code
+        code.begin_block()
+
+        type_decl = self.slice_type.dtype.empty_declaration_code()
+
+        total_size = ' * '.join("%s.shape[%d]" % (self.slice_result, i)
+                                for i in range(self.ndim))
+        code.putln("Py_ssize_t __pyx_temp_extent = %s;" % total_size)
+        code.putln("Py_ssize_t __pyx_temp_idx;")
+        code.putln("%s *__pyx_temp_pointer = (%s *) %s.data;" % (
+            type_decl, type_decl, self.slice_result))
+        code.putln("for (__pyx_temp_idx = 0; "
+                        "__pyx_temp_idx < __pyx_temp_extent; "
+                        "__pyx_temp_idx++) {")
+
+        return "__pyx_temp_pointer"
+
+    def end_loops(self):
+        self.code.putln("__pyx_temp_pointer += 1;")
+        self.code.putln("}")
+        self.code.end_block()
+
+
+class StridedSliceIter(SliceIter):
+    def start_loops(self):
+        code = self.code
+        code.begin_block()
+
+        for i in range(self.ndim):
+            t = i, self.slice_result, i
+            code.putln("Py_ssize_t __pyx_temp_extent_%d = %s.shape[%d];" % t)
+            code.putln("Py_ssize_t __pyx_temp_stride_%d = %s.strides[%d];" % t)
+            code.putln("char *__pyx_temp_pointer_%d;" % i)
+            code.putln("Py_ssize_t __pyx_temp_idx_%d;" % i)
+
+        code.putln("__pyx_temp_pointer_0 = %s.data;" % self.slice_result)
+
+        for i in range(self.ndim):
+            if i > 0:
+                code.putln("__pyx_temp_pointer_%d = __pyx_temp_pointer_%d;" % (i, i - 1))
+
+            code.putln("for (__pyx_temp_idx_%d = 0; "
+                            "__pyx_temp_idx_%d < __pyx_temp_extent_%d; "
+                            "__pyx_temp_idx_%d++) {" % (i, i, i, i))
+
+        return "__pyx_temp_pointer_%d" % (self.ndim - 1)
+
+    def end_loops(self):
+        code = self.code
+        for i in range(self.ndim - 1, -1, -1):
+            code.putln("__pyx_temp_pointer_%d += __pyx_temp_stride_%d;" % (i, i))
+            code.putln("}")
+
+        code.end_block()
+
+
+def copy_c_or_fortran_cname(memview):
+    if memview.is_c_contig:
+        c_or_f = 'c'
+    else:
+        c_or_f = 'f'
+
+    return "__pyx_memoryview_copy_slice_%s_%s" % (
+            memview.specialization_suffix(), c_or_f)
+
+
+def get_copy_new_utility(pos, from_memview, to_memview):
+    if (from_memview.dtype != to_memview.dtype and
+            not (from_memview.dtype.is_cv_qualified and from_memview.dtype.cv_base_type == to_memview.dtype)):
+        error(pos, "dtypes must be the same!")
+        return
+    if len(from_memview.axes) != len(to_memview.axes):
+        error(pos, "number of dimensions must be same")
+        return
+    if not (to_memview.is_c_contig or to_memview.is_f_contig):
+        error(pos, "to_memview must be c or f contiguous.")
+        return
+
+    for (access, packing) in from_memview.axes:
+        if access != 'direct':
+            error(pos, "cannot handle 'full' or 'ptr' access at this time.")
+            return
+
+    if to_memview.is_c_contig:
+        mode = 'c'
+        contig_flag = memview_c_contiguous
+    else:
+        assert to_memview.is_f_contig
+        mode = 'fortran'
+        contig_flag = memview_f_contiguous
+
+    return load_memview_c_utility(
+        "CopyContentsUtility",
+        context=dict(
+            context,
+            mode=mode,
+            dtype_decl=to_memview.dtype.empty_declaration_code(),
+            contig_flag=contig_flag,
+            ndim=to_memview.ndim,
+            func_cname=copy_c_or_fortran_cname(to_memview),
+            dtype_is_object=int(to_memview.dtype.is_pyobject)),
+        requires=[copy_contents_new_utility])
+
+
+def get_axes_specs(env, axes):
+    '''
+    get_axes_specs(env, axes) -> list of (access, packing) specs for each axis.
+    access is one of 'full', 'ptr' or 'direct'
+    packing is one of 'contig', 'strided' or 'follow'
+    '''
+
+    cythonscope = env.global_scope().context.cython_scope
+    cythonscope.load_cythonscope()
+    viewscope = cythonscope.viewscope
+
+    access_specs = tuple([viewscope.lookup(name)
+                    for name in ('full', 'direct', 'ptr')])
+    packing_specs = tuple([viewscope.lookup(name)
+                    for name in ('contig', 'strided', 'follow')])
+
+    is_f_contig, is_c_contig = False, False
+    default_access, default_packing = 'direct', 'strided'
+    cf_access, cf_packing = default_access, 'follow'
+
+    axes_specs = []
+    # analyse all axes.
+    for idx, axis in enumerate(axes):
+        if not axis.start.is_none:
+            raise CompileError(axis.start.pos,  START_ERR)
+
+        if not axis.stop.is_none:
+            raise CompileError(axis.stop.pos, STOP_ERR)
+
+        if axis.step.is_none:
+            axes_specs.append((default_access, default_packing))
+
+        elif isinstance(axis.step, IntNode):
+            # the packing for the ::1 axis is contiguous,
+            # all others are cf_packing.
+            if axis.step.compile_time_value(env) != 1:
+                raise CompileError(axis.step.pos, STEP_ERR)
+
+            axes_specs.append((cf_access, 'cfcontig'))
+
+        elif isinstance(axis.step, (NameNode, AttributeNode)):
+            entry = _get_resolved_spec(env, axis.step)
+            if entry.name in view_constant_to_access_packing:
+                axes_specs.append(view_constant_to_access_packing[entry.name])
+            else:
+                raise CompileError(axis.step.pos, INVALID_ERR)
+
+        else:
+            raise CompileError(axis.step.pos, INVALID_ERR)
+
+    # First, find out if we have a ::1 somewhere
+    contig_dim = 0
+    is_contig = False
+    for idx, (access, packing) in enumerate(axes_specs):
+        if packing == 'cfcontig':
+            if is_contig:
+                raise CompileError(axis.step.pos, BOTH_CF_ERR)
+
+            contig_dim = idx
+            axes_specs[idx] = (access, 'contig')
+            is_contig = True
+
+    if is_contig:
+        # We have a ::1 somewhere, see if we're C or Fortran contiguous
+        if contig_dim == len(axes) - 1:
+            is_c_contig = True
+        else:
+            is_f_contig = True
+
+            if contig_dim and not axes_specs[contig_dim - 1][0] in ('full', 'ptr'):
+                raise CompileError(axes[contig_dim].pos,
+                                   "Fortran contiguous specifier must follow an indirect dimension")
+
+        if is_c_contig:
+            # Contiguous in the last dimension, find the last indirect dimension
+            contig_dim = -1
+            for idx, (access, packing) in enumerate(reversed(axes_specs)):
+                if access in ('ptr', 'full'):
+                    contig_dim = len(axes) - idx - 1
+
+        # Replace 'strided' with 'follow' for any dimension following the last
+        # indirect dimension, the first dimension or the dimension following
+        # the ::1.
+        #               int[::indirect, ::1, :, :]
+        #                                    ^  ^
+        #               int[::indirect, :, :, ::1]
+        #                               ^  ^
+        start = contig_dim + 1
+        stop = len(axes) - is_c_contig
+        for idx, (access, packing) in enumerate(axes_specs[start:stop]):
+            idx = contig_dim + 1 + idx
+            if access != 'direct':
+                raise CompileError(axes[idx].pos,
+                                   "Indirect dimension may not follow "
+                                   "Fortran contiguous dimension")
+            if packing == 'contig':
+                raise CompileError(axes[idx].pos,
+                                   "Dimension may not be contiguous")
+            axes_specs[idx] = (access, cf_packing)
+
+        if is_c_contig:
+            # For C contiguity, we need to fix the 'contig' dimension
+            # after the loop
+            a, p = axes_specs[-1]
+            axes_specs[-1] = a, 'contig'
+
+    validate_axes_specs([axis.start.pos for axis in axes],
+                        axes_specs,
+                        is_c_contig,
+                        is_f_contig)
+
+    return axes_specs
+
+
+def validate_axes(pos, axes):
+    if len(axes) >= Options.buffer_max_dims:
+        error(pos, "More dimensions than the maximum number"
+                   " of buffer dimensions were used.")
+        return False
+
+    return True
+
+
+def is_cf_contig(specs):
+    is_c_contig = is_f_contig = False
+
+    if len(specs) == 1 and specs == [('direct', 'contig')]:
+        is_c_contig = True
+
+    elif (specs[-1] == ('direct','contig') and
+            all(axis == ('direct','follow') for axis in specs[:-1])):
+        # c_contiguous: 'follow', 'follow', ..., 'follow', 'contig'
+        is_c_contig = True
+
+    elif (len(specs) > 1 and
+            specs[0] == ('direct','contig') and
+            all(axis == ('direct','follow') for axis in specs[1:])):
+        # f_contiguous: 'contig', 'follow', 'follow', ..., 'follow'
+        is_f_contig = True
+
+    return is_c_contig, is_f_contig
+
+
+def get_mode(specs):
+    is_c_contig, is_f_contig = is_cf_contig(specs)
+
+    if is_c_contig:
+        return 'c'
+    elif is_f_contig:
+        return 'fortran'
+
+    for access, packing in specs:
+        if access in ('ptr', 'full'):
+            return 'full'
+
+    return 'strided'
+
+view_constant_to_access_packing = {
+    'generic':              ('full',   'strided'),
+    'strided':              ('direct', 'strided'),
+    'indirect':             ('ptr',    'strided'),
+    'generic_contiguous':   ('full',   'contig'),
+    'contiguous':           ('direct', 'contig'),
+    'indirect_contiguous':  ('ptr',    'contig'),
+}
+
+def validate_axes_specs(positions, specs, is_c_contig, is_f_contig):
+
+    packing_specs = ('contig', 'strided', 'follow')
+    access_specs = ('direct', 'ptr', 'full')
+
+    # is_c_contig, is_f_contig = is_cf_contig(specs)
+
+    has_contig = has_follow = has_strided = has_generic_contig = False
+
+    last_indirect_dimension = -1
+    for idx, (access, packing) in enumerate(specs):
+        if access == 'ptr':
+            last_indirect_dimension = idx
+
+    for idx, (pos, (access, packing)) in enumerate(zip(positions, specs)):
+
+        if not (access in access_specs and
+                packing in packing_specs):
+            raise CompileError(pos, "Invalid axes specification.")
+
+        if packing == 'strided':
+            has_strided = True
+        elif packing == 'contig':
+            if has_contig:
+                raise CompileError(pos, "Only one direct contiguous "
+                                        "axis may be specified.")
+
+            valid_contig_dims = last_indirect_dimension + 1, len(specs) - 1
+            if idx not in valid_contig_dims and access != 'ptr':
+                if last_indirect_dimension + 1 != len(specs) - 1:
+                    dims = "dimensions %d and %d" % valid_contig_dims
+                else:
+                    dims = "dimension %d" % valid_contig_dims[0]
+
+                raise CompileError(pos, "Only %s may be contiguous and direct" % dims)
+
+            has_contig = access != 'ptr'
+        elif packing == 'follow':
+            if has_strided:
+                raise CompileError(pos, "A memoryview cannot have both follow and strided axis specifiers.")
+            if not (is_c_contig or is_f_contig):
+                raise CompileError(pos, "Invalid use of the follow specifier.")
+
+        if access in ('ptr', 'full'):
+            has_strided = False
+
+def _get_resolved_spec(env, spec):
+    # spec must be a NameNode or an AttributeNode
+    if isinstance(spec, NameNode):
+        return _resolve_NameNode(env, spec)
+    elif isinstance(spec, AttributeNode):
+        return _resolve_AttributeNode(env, spec)
+    else:
+        raise CompileError(spec.pos, INVALID_ERR)
+
+def _resolve_NameNode(env, node):
+    try:
+        resolved_name = env.lookup(node.name).name
+    except AttributeError:
+        raise CompileError(node.pos, INVALID_ERR)
+
+    viewscope = env.global_scope().context.cython_scope.viewscope
+    entry = viewscope.lookup(resolved_name)
+    if entry is None:
+        raise CompileError(node.pos, NOT_CIMPORTED_ERR)
+
+    return entry
+
+def _resolve_AttributeNode(env, node):
+    path = []
+    while isinstance(node, AttributeNode):
+        path.insert(0, node.attribute)
+        node = node.obj
+    if isinstance(node, NameNode):
+        path.insert(0, node.name)
+    else:
+        raise CompileError(node.pos, EXPR_ERR)
+    modnames = path[:-1]
+    # must be at least 1 module name, o/w not an AttributeNode.
+    assert modnames
+
+    scope = env
+    for modname in modnames:
+        mod = scope.lookup(modname)
+        if not mod or not mod.as_module:
+            raise CompileError(
+                    node.pos, "undeclared name not builtin: %s" % modname)
+        scope = mod.as_module
+
+    entry = scope.lookup(path[-1])
+    if not entry:
+        raise CompileError(node.pos, "No such attribute '%s'" % path[-1])
+
+    return entry
+
+#
+### Utility loading
+#
+
+def load_memview_cy_utility(util_code_name, context=None, **kwargs):
+    return CythonUtilityCode.load(util_code_name, "MemoryView.pyx",
+                                  context=context, **kwargs)
+
+def load_memview_c_utility(util_code_name, context=None, **kwargs):
+    if context is None:
+        return UtilityCode.load(util_code_name, "MemoryView_C.c", **kwargs)
+    else:
+        return TempitaUtilityCode.load(util_code_name, "MemoryView_C.c",
+                                       context=context, **kwargs)
+
+def use_cython_array_utility_code(env):
+    cython_scope = env.global_scope().context.cython_scope
+    cython_scope.load_cythonscope()
+    cython_scope.viewscope.lookup('array_cwrapper').used = True
+
+context = {
+    'memview_struct_name': memview_objstruct_cname,
+    'max_dims': Options.buffer_max_dims,
+    'memviewslice_name': memviewslice_cname,
+    'memslice_init': PyrexTypes.MemoryViewSliceType.default_value,
+    'THREAD_LOCKS_PREALLOCATED': 8,
+}
+memviewslice_declare_code = load_memview_c_utility(
+        "MemviewSliceStruct",
+        context=context,
+        requires=[])
+
+atomic_utility = load_memview_c_utility("Atomics", context)
+
+memviewslice_init_code = load_memview_c_utility(
+    "MemviewSliceInit",
+    context=dict(context, BUF_MAX_NDIMS=Options.buffer_max_dims),
+    requires=[memviewslice_declare_code,
+              atomic_utility],
+)
+
+memviewslice_index_helpers = load_memview_c_utility("MemviewSliceIndex")
+
+typeinfo_to_format_code = load_memview_cy_utility(
+        "BufferFormatFromTypeInfo", requires=[Buffer._typeinfo_to_format_code])
+
+is_contig_utility = load_memview_c_utility("MemviewSliceIsContig", context)
+overlapping_utility = load_memview_c_utility("OverlappingSlices", context)
+copy_contents_new_utility = load_memview_c_utility(
+    "MemviewSliceCopyTemplate",
+    context,
+    requires=[],  # require cython_array_utility_code
+)
+
+view_utility_code = load_memview_cy_utility(
+        "View.MemoryView",
+        context=context,
+        requires=[Buffer.GetAndReleaseBufferUtilityCode(),
+                  Buffer.buffer_struct_declare_code,
+                  Buffer.buffer_formats_declare_code,
+                  memviewslice_init_code,
+                  is_contig_utility,
+                  overlapping_utility,
+                  copy_contents_new_utility,
+                  ],
+)
+view_utility_allowlist = ('array', 'memoryview', 'array_cwrapper',
+                          'generic', 'strided', 'indirect', 'contiguous',
+                          'indirect_contiguous')
+
+memviewslice_declare_code.requires.append(view_utility_code)
+copy_contents_new_utility.requires.append(view_utility_code)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Naming.py

@@ -0,0 +1,198 @@
+#
+#   C naming conventions
+#
+#
+#   Prefixes for generating C names.
+#   Collected here to facilitate ensuring uniqueness.
+#
+from .. import __version__
+
+pyrex_prefix    = "__pyx_"
+cyversion = __version__.replace('.', '_')
+
+
+codewriter_temp_prefix = pyrex_prefix + "t_"
+
+temp_prefix       = u"__cyt_"
+
+pyunicode_identifier_prefix = pyrex_prefix + 'U'
+
+builtin_prefix    = pyrex_prefix + "builtin_"
+arg_prefix        = pyrex_prefix + "arg_"
+genexpr_arg_prefix = pyrex_prefix + "genexpr_arg_"
+funcdoc_prefix    = pyrex_prefix + "doc_"
+enum_prefix       = pyrex_prefix + "e_"
+func_prefix       = pyrex_prefix + "f_"
+func_prefix_api   = pyrex_prefix + "api_f_"
+pyfunc_prefix     = pyrex_prefix + "pf_"
+pywrap_prefix     = pyrex_prefix + "pw_"
+genbody_prefix    = pyrex_prefix + "gb_"
+gstab_prefix      = pyrex_prefix + "getsets_"
+prop_get_prefix   = pyrex_prefix + "getprop_"
+const_prefix      = pyrex_prefix + "k_"
+py_const_prefix   = pyrex_prefix + "kp_"
+label_prefix      = pyrex_prefix + "L"
+pymethdef_prefix  = pyrex_prefix + "mdef_"
+method_wrapper_prefix = pyrex_prefix + "specialmethod_"
+methtab_prefix    = pyrex_prefix + "methods_"
+memtab_prefix     = pyrex_prefix + "members_"
+objstruct_prefix  = pyrex_prefix + "obj_"
+typeptr_prefix    = pyrex_prefix + "ptype_"
+prop_set_prefix   = pyrex_prefix + "setprop_"
+type_prefix       = pyrex_prefix + "t_"
+typeobj_prefix    = pyrex_prefix + "type_"
+var_prefix        = pyrex_prefix + "v_"
+varptr_prefix     = pyrex_prefix + "vp_"
+varptr_prefix_api = pyrex_prefix + "api_vp_"
+wrapperbase_prefix= pyrex_prefix + "wrapperbase_"
+pybuffernd_prefix   = pyrex_prefix + "pybuffernd_"
+pybufferstruct_prefix  = pyrex_prefix + "pybuffer_"
+vtable_prefix     = pyrex_prefix + "vtable_"
+vtabptr_prefix    = pyrex_prefix + "vtabptr_"
+vtabstruct_prefix = pyrex_prefix + "vtabstruct_"
+unicode_vtabentry_prefix  = pyrex_prefix + "Uvtabentry_"
+# vtab entries aren't normally mangled,
+# but punycode names sometimes start with numbers leading to a C syntax error
+unicode_structmember_prefix = pyrex_prefix + "Umember_"
+# as above -
+# not normally mangled but punycode names cause specific problems
+opt_arg_prefix    = pyrex_prefix + "opt_args_"
+convert_func_prefix = pyrex_prefix + "convert_"
+closure_scope_prefix = pyrex_prefix + "scope_"
+closure_class_prefix = pyrex_prefix + "scope_struct_"
+lambda_func_prefix = pyrex_prefix + "lambda_"
+module_is_main   = pyrex_prefix + "module_is_main"
+defaults_struct_prefix = pyrex_prefix + "defaults"
+dynamic_args_cname = pyrex_prefix + "dynamic_args"
+
+interned_prefixes = {
+    'str': pyrex_prefix + "n_",
+    'int': pyrex_prefix + "int_",
+    'float': pyrex_prefix + "float_",
+    'tuple': pyrex_prefix + "tuple_",
+    'codeobj': pyrex_prefix + "codeobj_",
+    'slice': pyrex_prefix + "slice_",
+    'ustring': pyrex_prefix + "ustring_",
+    'umethod': pyrex_prefix + "umethod_",
+}
+
+ctuple_type_prefix = pyrex_prefix + "ctuple_"
+args_cname       = pyrex_prefix + "args"
+nargs_cname      = pyrex_prefix + "nargs"
+kwvalues_cname   = pyrex_prefix + "kwvalues"
+generator_cname  = pyrex_prefix + "generator"
+sent_value_cname = pyrex_prefix + "sent_value"
+pykwdlist_cname  = pyrex_prefix + "pyargnames"
+obj_base_cname   = pyrex_prefix + "base"
+builtins_cname   = pyrex_prefix + "b"
+preimport_cname  = pyrex_prefix + "i"
+moddict_cname    = pyrex_prefix + "d"
+dummy_cname      = pyrex_prefix + "dummy"
+filename_cname   = pyrex_prefix + "filename"
+modulename_cname = pyrex_prefix + "modulename"
+filetable_cname  = pyrex_prefix + "f"
+intern_tab_cname = pyrex_prefix + "intern_tab"
+kwds_cname       = pyrex_prefix + "kwds"
+lineno_cname     = pyrex_prefix + "lineno"
+clineno_cname    = pyrex_prefix + "clineno"
+cfilenm_cname    = pyrex_prefix + "cfilenm"
+local_tstate_cname = pyrex_prefix + "tstate"
+module_cname     = pyrex_prefix + "m"
+modulestate_cname = pyrex_prefix + "mstate"
+modulestateglobal_cname = pyrex_prefix + "mstate_global"
+moddoc_cname     = pyrex_prefix + "mdoc"
+methtable_cname  = pyrex_prefix + "methods"
+retval_cname     = pyrex_prefix + "r"
+reqd_kwds_cname  = pyrex_prefix + "reqd_kwds"
+self_cname       = pyrex_prefix + "self"
+stringtab_cname  = pyrex_prefix + "string_tab"
+vtabslot_cname   = pyrex_prefix + "vtab"
+c_api_tab_cname  = pyrex_prefix + "c_api_tab"
+gilstate_cname   = pyrex_prefix + "state"
+skip_dispatch_cname = pyrex_prefix + "skip_dispatch"
+empty_tuple      = pyrex_prefix + "empty_tuple"
+empty_bytes      = pyrex_prefix + "empty_bytes"
+empty_unicode    = pyrex_prefix + "empty_unicode"
+print_function   = pyrex_prefix + "print"
+print_function_kwargs   = pyrex_prefix + "print_kwargs"
+cleanup_cname    = pyrex_prefix + "module_cleanup"
+pymoduledef_cname = pyrex_prefix + "moduledef"
+pymoduledef_slots_cname = pyrex_prefix + "moduledef_slots"
+pymodinit_module_arg = pyrex_prefix + "pyinit_module"
+pymodule_create_func_cname = pyrex_prefix + "pymod_create"
+pymodule_exec_func_cname = pyrex_prefix + "pymod_exec"
+optional_args_cname = pyrex_prefix + "optional_args"
+import_star      = pyrex_prefix + "import_star"
+import_star_set  = pyrex_prefix + "import_star_set"
+outer_scope_cname= pyrex_prefix + "outer_scope"
+cur_scope_cname  = pyrex_prefix + "cur_scope"
+enc_scope_cname  = pyrex_prefix + "enc_scope"
+frame_cname      = pyrex_prefix + "frame"
+frame_code_cname = pyrex_prefix + "frame_code"
+error_without_exception_cname = pyrex_prefix + "error_without_exception"
+binding_cfunc    = pyrex_prefix + "binding_PyCFunctionType"
+fused_func_prefix = pyrex_prefix + 'fuse_'
+fused_dtype_prefix = pyrex_prefix + 'fused_dtype_'
+quick_temp_cname = pyrex_prefix + "temp"  # temp variable for quick'n'dirty temping
+tp_dict_version_temp = pyrex_prefix + "tp_dict_version"
+obj_dict_version_temp = pyrex_prefix + "obj_dict_version"
+type_dict_guard_temp = pyrex_prefix + "typedict_guard"
+cython_runtime_cname   = pyrex_prefix + "cython_runtime"
+cyfunction_type_cname = pyrex_prefix + "CyFunctionType"
+fusedfunction_type_cname = pyrex_prefix + "FusedFunctionType"
+# the name "dflt" was picked by analogy with the CPython dataclass module which stores
+# the default values in variables named f"_dflt_{field.name}" in a hidden scope that's
+# passed to the __init__ function. (The name is unimportant to the exact workings though)
+dataclass_field_default_cname = pyrex_prefix + "dataclass_dflt"
+
+global_code_object_cache_find = pyrex_prefix + 'find_code_object'
+global_code_object_cache_insert = pyrex_prefix + 'insert_code_object'
+
+genexpr_id_ref = 'genexpr'
+freelist_name  = 'freelist'
+freecount_name = 'freecount'
+
+line_c_macro = "__LINE__"
+
+file_c_macro = "__FILE__"
+
+extern_c_macro  = pyrex_prefix.upper() + "EXTERN_C"
+
+exc_type_name   = pyrex_prefix + "exc_type"
+exc_value_name  = pyrex_prefix + "exc_value"
+exc_tb_name     = pyrex_prefix + "exc_tb"
+exc_lineno_name = pyrex_prefix + "exc_lineno"
+
+parallel_exc_type = pyrex_prefix + "parallel_exc_type"
+parallel_exc_value = pyrex_prefix + "parallel_exc_value"
+parallel_exc_tb = pyrex_prefix + "parallel_exc_tb"
+parallel_filename = pyrex_prefix + "parallel_filename"
+parallel_lineno = pyrex_prefix + "parallel_lineno"
+parallel_clineno = pyrex_prefix + "parallel_clineno"
+parallel_why = pyrex_prefix + "parallel_why"
+
+exc_vars = (exc_type_name, exc_value_name, exc_tb_name)
+
+api_name        = pyrex_prefix + "capi__"
+
+# the h and api guards get changed to:
+#  __PYX_HAVE__FILENAME (for ascii filenames)
+#  __PYX_HAVE_U_PUNYCODEFILENAME (for non-ascii filenames)
+h_guard_prefix   = "__PYX_HAVE_"
+api_guard_prefix = "__PYX_HAVE_API_"
+api_func_guard   = "__PYX_HAVE_API_FUNC_"
+
+PYX_NAN          = "__PYX_NAN()"
+
+def py_version_hex(major, minor=0, micro=0, release_level=0, release_serial=0):
+    return (major << 24) | (minor << 16) | (micro << 8) | (release_level << 4) | (release_serial)
+
+# there's a few places where it's useful to iterate over all of these
+used_types_and_macros = [
+    (cyfunction_type_cname, '__Pyx_CyFunction_USED'),
+    (fusedfunction_type_cname, '__Pyx_FusedFunction_USED'),
+    ('__pyx_GeneratorType', '__Pyx_Generator_USED'),
+    ('__pyx_IterableCoroutineType', '__Pyx_IterableCoroutine_USED'),
+    ('__pyx_CoroutineAwaitType', '__Pyx_Coroutine_USED'),
+    ('__pyx_CoroutineType', '__Pyx_Coroutine_USED'),
+]

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Options.py

@@ -0,0 +1,799 @@
+#
+#  Cython - Compilation-wide options and pragma declarations
+#
+
+from __future__ import absolute_import
+
+import os
+
+from .. import Utils
+
+
+class ShouldBeFromDirective(object):
+
+    known_directives = []
+
+    def __init__(self, options_name, directive_name=None, disallow=False):
+        self.options_name = options_name
+        self.directive_name = directive_name or options_name
+        self.disallow = disallow
+        self.known_directives.append(self)
+
+    def __nonzero__(self):
+        self._bad_access()
+
+    def __int__(self):
+        self._bad_access()
+
+    def _bad_access(self):
+        raise RuntimeError(repr(self))
+
+    def __repr__(self):
+        return "Illegal access of '%s' from Options module rather than directive '%s'" % (
+            self.options_name, self.directive_name)
+
+
+"""
+The members of this module are documented using autodata in
+Cython/docs/src/reference/compilation.rst.
+See https://www.sphinx-doc.org/en/master/usage/extensions/autodoc.html#directive-autoattribute
+for how autodata works.
+Descriptions of those members should start with a #:
+Donc forget to keep the docs in sync by removing and adding
+the members in both this file and the .rst file.
+"""
+
+#: Whether or not to include docstring in the Python extension. If False, the binary size
+#: will be smaller, but the ``__doc__`` attribute of any class or function will be an
+#: empty string.
+docstrings = True
+
+#: Embed the source code position in the docstrings of functions and classes.
+embed_pos_in_docstring = False
+
+# undocumented
+pre_import = None
+
+#: Decref global variables in each module on exit for garbage collection.
+#: 0: None, 1+: interned objects, 2+: cdef globals, 3+: types objects
+#: Mostly for reducing noise in Valgrind as it typically executes at process exit
+#: (when all memory will be reclaimed anyways).
+#: Note that directly or indirectly executed cleanup code that makes use of global
+#: variables or types may no longer be safe when enabling the respective level since
+#: there is no guaranteed order in which the (reference counted) objects will
+#: be cleaned up.  The order can change due to live references and reference cycles.
+generate_cleanup_code = False
+
+#: Should tp_clear() set object fields to None instead of clearing them to NULL?
+clear_to_none = True
+
+#: Generate an annotated HTML version of the input source files for debugging and optimisation purposes.
+#: This has the same effect as the ``annotate`` argument in :func:`cythonize`.
+annotate = False
+
+# When annotating source files in HTML, include coverage information from
+# this file.
+annotate_coverage_xml = None
+
+#: This will abort the compilation on the first error occurred rather than trying
+#: to keep going and printing further error messages.
+fast_fail = False
+
+#: Turn all warnings into errors.
+warning_errors = False
+
+#: Make unknown names an error.  Python raises a NameError when
+#: encountering unknown names at runtime, whereas this option makes
+#: them a compile time error.  If you want full Python compatibility,
+#: you should disable this option and also 'cache_builtins'.
+error_on_unknown_names = True
+
+#: Make uninitialized local variable reference a compile time error.
+#: Python raises UnboundLocalError at runtime, whereas this option makes
+#: them a compile time error. Note that this option affects only variables
+#: of "python object" type.
+error_on_uninitialized = True
+
+#: This will convert statements of the form ``for i in range(...)``
+#: to ``for i from ...`` when ``i`` is a C integer type, and the direction
+#: (i.e. sign of step) can be determined.
+#: WARNING: This may change the semantics if the range causes assignment to
+#: i to overflow. Specifically, if this option is set, an error will be
+#: raised before the loop is entered, whereas without this option the loop
+#: will execute until an overflowing value is encountered.
+convert_range = True
+
+#: Perform lookups on builtin names only once, at module initialisation
+#: time.  This will prevent the module from getting imported if a
+#: builtin name that it uses cannot be found during initialisation.
+#: Default is True.
+#: Note that some legacy builtins are automatically remapped
+#: from their Python 2 names to their Python 3 names by Cython
+#: when building in Python 3.x,
+#: so that they do not get in the way even if this option is enabled.
+cache_builtins = True
+
+#: Generate branch prediction hints to speed up error handling etc.
+gcc_branch_hints = True
+
+#: Enable this to allow one to write ``your_module.foo = ...`` to overwrite the
+#: definition if the cpdef function foo, at the cost of an extra dictionary
+#: lookup on every call.
+#: If this is false it generates only the Python wrapper and no override check.
+lookup_module_cpdef = False
+
+#: Whether or not to embed the Python interpreter, for use in making a
+#: standalone executable or calling from external libraries.
+#: This will provide a C function which initialises the interpreter and
+#: executes the body of this module.
+#: See `this demo <https://github.com/cython/cython/tree/master/Demos/embed>`_
+#: for a concrete example.
+#: If true, the initialisation function is the C main() function, but
+#: this option can also be set to a non-empty string to provide a function name explicitly.
+#: Default is False.
+embed = None
+
+# In previous iterations of Cython, globals() gave the first non-Cython module
+# globals in the call stack.  Sage relies on this behavior for variable injection.
+old_style_globals = ShouldBeFromDirective('old_style_globals')
+
+#: Allows cimporting from a pyx file without a pxd file.
+cimport_from_pyx = False
+
+#: Maximum number of dimensions for buffers -- set lower than number of
+#: dimensions in numpy, as
+#: slices are passed by value and involve a lot of copying.
+buffer_max_dims = 8
+
+#: Number of function closure instances to keep in a freelist (0: no freelists)
+closure_freelist_size = 8
+
+
+def get_directive_defaults():
+    # To add an item to this list, all accesses should be changed to use the new
+    # directive, and the global option itself should be set to an instance of
+    # ShouldBeFromDirective.
+    for old_option in ShouldBeFromDirective.known_directives:
+        value = globals().get(old_option.options_name)
+        assert old_option.directive_name in _directive_defaults
+        if not isinstance(value, ShouldBeFromDirective):
+            if old_option.disallow:
+                raise RuntimeError(
+                    "Option '%s' must be set from directive '%s'" % (
+                    old_option.option_name, old_option.directive_name))
+            else:
+                # Warn?
+                _directive_defaults[old_option.directive_name] = value
+    return _directive_defaults
+
+def copy_inherited_directives(outer_directives, **new_directives):
+    # A few directives are not copied downwards and this function removes them.
+    # For example, test_assert_path_exists and test_fail_if_path_exists should not be inherited
+    #  otherwise they can produce very misleading test failures
+    new_directives_out = dict(outer_directives)
+    for name in ('test_assert_path_exists', 'test_fail_if_path_exists', 'test_assert_c_code_has', 'test_fail_if_c_code_has'):
+        new_directives_out.pop(name, None)
+    new_directives_out.update(new_directives)
+    return new_directives_out
+
+# Declare compiler directives
+_directive_defaults = {
+    'binding': True,  # was False before 3.0
+    'boundscheck' : True,
+    'nonecheck' : False,
+    'initializedcheck' : True,
+    'embedsignature': False,
+    'embedsignature.format': 'c',
+    'auto_cpdef': False,
+    'auto_pickle': None,
+    'cdivision': False,  # was True before 0.12
+    'cdivision_warnings': False,
+    'cpow': None,  # was True before 3.0
+    # None (not set by user) is treated as slightly different from False
+    'c_api_binop_methods': False,  # was True before 3.0
+    'overflowcheck': False,
+    'overflowcheck.fold': True,
+    'always_allow_keywords': True,
+    'allow_none_for_extension_args': True,
+    'wraparound' : True,
+    'ccomplex' : False,  # use C99/C++ for complex types and arith
+    'callspec' : "",
+    'nogil' : False,
+    'gil' : False,
+    'with_gil' : False,
+    'profile': False,
+    'linetrace': False,
+    'emit_code_comments': True,  # copy original source code into C code comments
+    'annotation_typing': True,  # read type declarations from Python function annotations
+    'infer_types': None,
+    'infer_types.verbose': False,
+    'autotestdict': True,
+    'autotestdict.cdef': False,
+    'autotestdict.all': False,
+    'language_level': None,
+    'fast_getattr': False,  # Undocumented until we come up with a better way to handle this everywhere.
+    'py2_import': False,  # For backward compatibility of Cython's source code in Py3 source mode
+    'preliminary_late_includes_cy28': False,  # Temporary directive in 0.28, to be removed in a later version (see GH#2079).
+    'iterable_coroutine': False,  # Make async coroutines backwards compatible with the old asyncio yield-from syntax.
+    'c_string_type': 'bytes',
+    'c_string_encoding': '',
+    'type_version_tag': True,  # enables Py_TPFLAGS_HAVE_VERSION_TAG on extension types
+    'unraisable_tracebacks': True,
+    'old_style_globals': False,
+    'np_pythran': False,
+    'fast_gil': False,
+    'cpp_locals': False,  # uses std::optional for C++ locals, so that they work more like Python locals
+    'legacy_implicit_noexcept': False,
+
+    # set __file__ and/or __path__ to known source/target path at import time (instead of not having them available)
+    'set_initial_path' : None,  # SOURCEFILE or "/full/path/to/module"
+
+    'warn': None,
+    'warn.undeclared': False,
+    'warn.unreachable': True,
+    'warn.maybe_uninitialized': False,
+    'warn.unused': False,
+    'warn.unused_arg': False,
+    'warn.unused_result': False,
+    'warn.multiple_declarators': True,
+    'show_performance_hints': True,
+
+# optimizations
+    'optimize.inline_defnode_calls': True,
+    'optimize.unpack_method_calls': True,  # increases code size when True
+    'optimize.unpack_method_calls_in_pyinit': False,  # uselessly increases code size when True
+    'optimize.use_switch': True,
+
+# remove unreachable code
+    'remove_unreachable': True,
+
+# control flow debug directives
+    'control_flow.dot_output': "",  # Graphviz output filename
+    'control_flow.dot_annotate_defs': False,  # Annotate definitions
+
+# test support
+    'test_assert_path_exists' : [],
+    'test_fail_if_path_exists' : [],
+    'test_assert_c_code_has' : [],
+    'test_fail_if_c_code_has' : [],
+
+# experimental, subject to change
+    'formal_grammar': False,
+}
+
+# Extra warning directives
+extra_warnings = {
+    'warn.maybe_uninitialized': True,
+    'warn.unreachable': True,
+    'warn.unused': True,
+}
+
+def one_of(*args):
+    def validate(name, value):
+        if value not in args:
+            raise ValueError("%s directive must be one of %s, got '%s'" % (
+                name, args, value))
+        else:
+            return value
+    return validate
+
+
+def normalise_encoding_name(option_name, encoding):
+    """
+    >>> normalise_encoding_name('c_string_encoding', 'ascii')
+    'ascii'
+    >>> normalise_encoding_name('c_string_encoding', 'AsCIi')
+    'ascii'
+    >>> normalise_encoding_name('c_string_encoding', 'us-ascii')
+    'ascii'
+    >>> normalise_encoding_name('c_string_encoding', 'utF8')
+    'utf8'
+    >>> normalise_encoding_name('c_string_encoding', 'utF-8')
+    'utf8'
+    >>> normalise_encoding_name('c_string_encoding', 'deFAuLT')
+    'default'
+    >>> normalise_encoding_name('c_string_encoding', 'default')
+    'default'
+    >>> normalise_encoding_name('c_string_encoding', 'SeriousLyNoSuch--Encoding')
+    'SeriousLyNoSuch--Encoding'
+    """
+    if not encoding:
+        return ''
+    if encoding.lower() in ('default', 'ascii', 'utf8'):
+        return encoding.lower()
+    import codecs
+    try:
+        decoder = codecs.getdecoder(encoding)
+    except LookupError:
+        return encoding  # may exists at runtime ...
+    for name in ('ascii', 'utf8'):
+        if codecs.getdecoder(name) == decoder:
+            return name
+    return encoding
+
+# use as a sential value to defer analysis of the arguments
+# instead of analysing them in InterpretCompilerDirectives. The dataclass directives are quite
+# complicated and it's easier to deal with them at the point the dataclass is created
+class DEFER_ANALYSIS_OF_ARGUMENTS:
+    pass
+DEFER_ANALYSIS_OF_ARGUMENTS = DEFER_ANALYSIS_OF_ARGUMENTS()
+
+# Override types possibilities above, if needed
+directive_types = {
+    'language_level': str,  # values can be None/2/3/'3str', where None == 2+warning
+    'auto_pickle': bool,
+    'locals': dict,
+    'final' : bool,  # final cdef classes and methods
+    'collection_type': one_of('sequence'),
+    'nogil' : DEFER_ANALYSIS_OF_ARGUMENTS,
+    'gil' : DEFER_ANALYSIS_OF_ARGUMENTS,
+    'with_gil' : None,
+    'internal' : bool,  # cdef class visibility in the module dict
+    'infer_types' : bool,  # values can be True/None/False
+    'binding' : bool,
+    'cfunc' : None,  # decorators do not take directive value
+    'ccall' : None,
+    'ufunc': None,
+    'cpow' : bool,
+    'inline' : None,
+    'staticmethod' : None,
+    'cclass' : None,
+    'no_gc_clear' : bool,
+    'no_gc' : bool,
+    'returns' : type,
+    'exceptval': type,  # actually (type, check=True/False), but has its own parser
+    'set_initial_path': str,
+    'freelist': int,
+    'c_string_type': one_of('bytes', 'bytearray', 'str', 'unicode'),
+    'c_string_encoding': normalise_encoding_name,
+    'trashcan': bool,
+    'total_ordering': None,
+    'dataclasses.dataclass': DEFER_ANALYSIS_OF_ARGUMENTS,
+    'dataclasses.field': DEFER_ANALYSIS_OF_ARGUMENTS,
+    'embedsignature.format': one_of('c', 'clinic', 'python'),
+}
+
+for key, val in _directive_defaults.items():
+    if key not in directive_types:
+        directive_types[key] = type(val)
+
+directive_scopes = {  # defaults to available everywhere
+    # 'module', 'function', 'class', 'with statement'
+    'auto_pickle': ('module', 'cclass'),
+    'final' : ('cclass', 'function'),
+    'collection_type': ('cclass',),
+    'nogil' : ('function', 'with statement'),
+    'gil' : ('with statement'),
+    'with_gil' : ('function',),
+    'inline' : ('function',),
+    'cfunc' : ('function', 'with statement'),
+    'ccall' : ('function', 'with statement'),
+    'returns' : ('function',),
+    'exceptval' : ('function',),
+    'locals' : ('function',),
+    'staticmethod' : ('function',),  # FIXME: analysis currently lacks more specific function scope
+    'no_gc_clear' : ('cclass',),
+    'no_gc' : ('cclass',),
+    'internal' : ('cclass',),
+    'cclass' : ('class', 'cclass', 'with statement'),
+    'autotestdict' : ('module',),
+    'autotestdict.all' : ('module',),
+    'autotestdict.cdef' : ('module',),
+    'set_initial_path' : ('module',),
+    'test_assert_path_exists' : ('function', 'class', 'cclass'),
+    'test_fail_if_path_exists' : ('function', 'class', 'cclass'),
+    'test_assert_c_code_has' : ('module',),
+    'test_fail_if_c_code_has' : ('module',),
+    'freelist': ('cclass',),
+    'emit_code_comments': ('module',),
+    # Avoid scope-specific to/from_py_functions for c_string.
+    'c_string_type': ('module',),
+    'c_string_encoding': ('module',),
+    'type_version_tag': ('module', 'cclass'),
+    'language_level': ('module',),
+    # globals() could conceivably be controlled at a finer granularity,
+    # but that would complicate the implementation
+    'old_style_globals': ('module',),
+    'np_pythran': ('module',),
+    'fast_gil': ('module',),
+    'iterable_coroutine': ('module', 'function'),
+    'trashcan' : ('cclass',),
+    'total_ordering': ('class', 'cclass'),
+    'dataclasses.dataclass' : ('class', 'cclass'),
+    'cpp_locals': ('module', 'function', 'cclass'),  # I don't think they make sense in a with_statement
+    'ufunc': ('function',),
+    'legacy_implicit_noexcept': ('module', ),
+}
+
+
+# A list of directives that (when used as a decorator) are only applied to
+# the object they decorate and not to its children.
+immediate_decorator_directives = {
+    'cfunc', 'ccall', 'cclass', 'dataclasses.dataclass', 'ufunc',
+    # function signature directives
+    'inline', 'exceptval', 'returns', 'with_gil',  # 'nogil',
+    # class directives
+    'freelist', 'no_gc', 'no_gc_clear', 'type_version_tag', 'final',
+    'auto_pickle', 'internal', 'collection_type', 'total_ordering',
+    # testing directives
+    'test_fail_if_path_exists', 'test_assert_path_exists',
+}
+
+
+def parse_directive_value(name, value, relaxed_bool=False):
+    """
+    Parses value as an option value for the given name and returns
+    the interpreted value. None is returned if the option does not exist.
+
+    >>> print(parse_directive_value('nonexisting', 'asdf asdfd'))
+    None
+    >>> parse_directive_value('boundscheck', 'True')
+    True
+    >>> parse_directive_value('boundscheck', 'true')
+    Traceback (most recent call last):
+       ...
+    ValueError: boundscheck directive must be set to True or False, got 'true'
+
+    >>> parse_directive_value('c_string_encoding', 'us-ascii')
+    'ascii'
+    >>> parse_directive_value('c_string_type', 'str')
+    'str'
+    >>> parse_directive_value('c_string_type', 'bytes')
+    'bytes'
+    >>> parse_directive_value('c_string_type', 'bytearray')
+    'bytearray'
+    >>> parse_directive_value('c_string_type', 'unicode')
+    'unicode'
+    >>> parse_directive_value('c_string_type', 'unnicode')
+    Traceback (most recent call last):
+    ValueError: c_string_type directive must be one of ('bytes', 'bytearray', 'str', 'unicode'), got 'unnicode'
+    """
+    type = directive_types.get(name)
+    if not type:
+        return None
+    orig_value = value
+    if type is bool:
+        value = str(value)
+        if value == 'True':
+            return True
+        if value == 'False':
+            return False
+        if relaxed_bool:
+            value = value.lower()
+            if value in ("true", "yes"):
+                return True
+            elif value in ("false", "no"):
+                return False
+        raise ValueError("%s directive must be set to True or False, got '%s'" % (
+            name, orig_value))
+    elif type is int:
+        try:
+            return int(value)
+        except ValueError:
+            raise ValueError("%s directive must be set to an integer, got '%s'" % (
+                name, orig_value))
+    elif type is str:
+        return str(value)
+    elif callable(type):
+        return type(name, value)
+    else:
+        assert False
+
+
+def parse_directive_list(s, relaxed_bool=False, ignore_unknown=False,
+                         current_settings=None):
+    """
+    Parses a comma-separated list of pragma options. Whitespace
+    is not considered.
+
+    >>> parse_directive_list('      ')
+    {}
+    >>> (parse_directive_list('boundscheck=True') ==
+    ... {'boundscheck': True})
+    True
+    >>> parse_directive_list('  asdf')
+    Traceback (most recent call last):
+       ...
+    ValueError: Expected "=" in option "asdf"
+    >>> parse_directive_list('boundscheck=hey')
+    Traceback (most recent call last):
+       ...
+    ValueError: boundscheck directive must be set to True or False, got 'hey'
+    >>> parse_directive_list('unknown=True')
+    Traceback (most recent call last):
+       ...
+    ValueError: Unknown option: "unknown"
+    >>> warnings = parse_directive_list('warn.all=True')
+    >>> len(warnings) > 1
+    True
+    >>> sum(warnings.values()) == len(warnings)  # all true.
+    True
+    """
+    if current_settings is None:
+        result = {}
+    else:
+        result = current_settings
+    for item in s.split(','):
+        item = item.strip()
+        if not item:
+            continue
+        if '=' not in item:
+            raise ValueError('Expected "=" in option "%s"' % item)
+        name, value = [s.strip() for s in item.strip().split('=', 1)]
+        if name not in _directive_defaults:
+            found = False
+            if name.endswith('.all'):
+                prefix = name[:-3]
+                for directive in _directive_defaults:
+                    if directive.startswith(prefix):
+                        found = True
+                        parsed_value = parse_directive_value(directive, value, relaxed_bool=relaxed_bool)
+                        result[directive] = parsed_value
+            if not found and not ignore_unknown:
+                raise ValueError('Unknown option: "%s"' % name)
+        elif directive_types.get(name) is list:
+            if name in result:
+                result[name].append(value)
+            else:
+                result[name] = [value]
+        else:
+            parsed_value = parse_directive_value(name, value, relaxed_bool=relaxed_bool)
+            result[name] = parsed_value
+    return result
+
+
+def parse_variable_value(value):
+    """
+    Parses value as an option value for the given name and returns
+    the interpreted value.
+
+    >>> parse_variable_value('True')
+    True
+    >>> parse_variable_value('true')
+    'true'
+    >>> parse_variable_value('us-ascii')
+    'us-ascii'
+    >>> parse_variable_value('str')
+    'str'
+    >>> parse_variable_value('123')
+    123
+    >>> parse_variable_value('1.23')
+    1.23
+
+    """
+    if value == "True":
+        return True
+    elif value == "False":
+        return False
+    elif value == "None":
+        return None
+    elif value.isdigit():
+        return int(value)
+    else:
+        try:
+            value = float(value)
+        except Exception:
+            # Not a float
+            pass
+        return value
+
+
+def parse_compile_time_env(s, current_settings=None):
+    """
+    Parses a comma-separated list of pragma options. Whitespace
+    is not considered.
+
+    >>> parse_compile_time_env('      ')
+    {}
+    >>> (parse_compile_time_env('HAVE_OPENMP=True') ==
+    ... {'HAVE_OPENMP': True})
+    True
+    >>> parse_compile_time_env('  asdf')
+    Traceback (most recent call last):
+       ...
+    ValueError: Expected "=" in option "asdf"
+    >>> parse_compile_time_env('NUM_THREADS=4') == {'NUM_THREADS': 4}
+    True
+    >>> parse_compile_time_env('unknown=anything') == {'unknown': 'anything'}
+    True
+    """
+    if current_settings is None:
+        result = {}
+    else:
+        result = current_settings
+    for item in s.split(','):
+        item = item.strip()
+        if not item:
+            continue
+        if '=' not in item:
+            raise ValueError('Expected "=" in option "%s"' % item)
+        name, value = [s.strip() for s in item.split('=', 1)]
+        result[name] = parse_variable_value(value)
+    return result
+
+
+# ------------------------------------------------------------------------
+# CompilationOptions are constructed from user input and are the `option`
+#  object passed throughout the compilation pipeline.
+
+class CompilationOptions(object):
+    r"""
+    See default_options at the end of this module for a list of all possible
+    options and CmdLine.usage and CmdLine.parse_command_line() for their
+    meaning.
+    """
+    def __init__(self, defaults=None, **kw):
+        self.include_path = []
+        if defaults:
+            if isinstance(defaults, CompilationOptions):
+                defaults = defaults.__dict__
+        else:
+            defaults = default_options
+
+        options = dict(defaults)
+        options.update(kw)
+
+        # let's assume 'default_options' contains a value for most known compiler options
+        # and validate against them
+        unknown_options = set(options) - set(default_options)
+        # ignore valid options that are not in the defaults
+        unknown_options.difference_update(['include_path'])
+        if unknown_options:
+            message = "got unknown compilation option%s, please remove: %s" % (
+                's' if len(unknown_options) > 1 else '',
+                ', '.join(unknown_options))
+            raise ValueError(message)
+
+        directive_defaults = get_directive_defaults()
+        directives = dict(options['compiler_directives'])  # copy mutable field
+        # check for invalid directives
+        unknown_directives = set(directives) - set(directive_defaults)
+        if unknown_directives:
+            message = "got unknown compiler directive%s: %s" % (
+                's' if len(unknown_directives) > 1 else '',
+                ', '.join(unknown_directives))
+            raise ValueError(message)
+        options['compiler_directives'] = directives
+        if directives.get('np_pythran', False) and not options['cplus']:
+            import warnings
+            warnings.warn("C++ mode forced when in Pythran mode!")
+            options['cplus'] = True
+        if 'language_level' not in kw and directives.get('language_level'):
+            options['language_level'] = directives['language_level']
+        elif not options.get('language_level'):
+            options['language_level'] = directive_defaults.get('language_level')
+        if 'formal_grammar' in directives and 'formal_grammar' not in kw:
+            options['formal_grammar'] = directives['formal_grammar']
+        if options['cache'] is True:
+            options['cache'] = os.path.join(Utils.get_cython_cache_dir(), 'compiler')
+
+        self.__dict__.update(options)
+
+    def configure_language_defaults(self, source_extension):
+        if source_extension == 'py':
+            if self.compiler_directives.get('binding') is None:
+                self.compiler_directives['binding'] = True
+
+    def get_fingerprint(self):
+        r"""
+        Return a string that contains all the options that are relevant for cache invalidation.
+        """
+        # Collect only the data that can affect the generated file(s).
+        data = {}
+
+        for key, value in self.__dict__.items():
+            if key in ['show_version', 'errors_to_stderr', 'verbose', 'quiet']:
+                # verbosity flags have no influence on the compilation result
+                continue
+            elif key in ['output_file', 'output_dir']:
+                # ignore the exact name of the output file
+                continue
+            elif key in ['depfile']:
+                # external build system dependency tracking file does not influence outputs
+                continue
+            elif key in ['timestamps']:
+                # the cache cares about the content of files, not about the timestamps of sources
+                continue
+            elif key in ['cache']:
+                # hopefully caching has no influence on the compilation result
+                continue
+            elif key in ['compiler_directives']:
+                # directives passed on to the C compiler do not influence the generated C code
+                continue
+            elif key in ['include_path']:
+                # this path changes which headers are tracked as dependencies,
+                # it has no influence on the generated C code
+                continue
+            elif key in ['working_path']:
+                # this path changes where modules and pxd files are found;
+                # their content is part of the fingerprint anyway, their
+                # absolute path does not matter
+                continue
+            elif key in ['create_extension']:
+                # create_extension() has already mangled the options, e.g.,
+                # embedded_metadata, when the fingerprint is computed so we
+                # ignore it here.
+                continue
+            elif key in ['build_dir']:
+                # the (temporary) directory where we collect dependencies
+                # has no influence on the C output
+                continue
+            elif key in ['use_listing_file', 'generate_pxi', 'annotate', 'annotate_coverage_xml']:
+                # all output files are contained in the cache so the types of
+                # files generated must be part of the fingerprint
+                data[key] = value
+            elif key in ['formal_grammar', 'evaluate_tree_assertions']:
+                # these bits can change whether compilation to C passes/fails
+                data[key] = value
+            elif key in ['embedded_metadata', 'emit_linenums',
+                         'c_line_in_traceback', 'gdb_debug',
+                         'relative_path_in_code_position_comments']:
+                # the generated code contains additional bits when these are set
+                data[key] = value
+            elif key in ['cplus', 'language_level', 'compile_time_env', 'np_pythran']:
+                # assorted bits that, e.g., influence the parser
+                data[key] = value
+            elif key == ['capi_reexport_cincludes']:
+                if self.capi_reexport_cincludes:
+                    # our caching implementation does not yet include fingerprints of all the header files
+                    raise NotImplementedError('capi_reexport_cincludes is not compatible with Cython caching')
+            elif key == ['common_utility_include_dir']:
+                if self.common_utility_include_dir:
+                    raise NotImplementedError('common_utility_include_dir is not compatible with Cython caching yet')
+            else:
+                # any unexpected option should go into the fingerprint; it's better
+                # to recompile than to return incorrect results from the cache.
+                data[key] = value
+
+        def to_fingerprint(item):
+            r"""
+            Recursively turn item into a string, turning dicts into lists with
+            deterministic ordering.
+            """
+            if isinstance(item, dict):
+                item = sorted([(repr(key), to_fingerprint(value)) for key, value in item.items()])
+            return repr(item)
+
+        return to_fingerprint(data)
+
+
+# ------------------------------------------------------------------------
+#
+#  Set the default options depending on the platform
+#
+# ------------------------------------------------------------------------
+
+default_options = dict(
+    show_version=0,
+    use_listing_file=0,
+    errors_to_stderr=1,
+    cplus=0,
+    output_file=None,
+    depfile=None,
+    annotate=None,
+    annotate_coverage_xml=None,
+    generate_pxi=0,
+    capi_reexport_cincludes=0,
+    working_path="",
+    timestamps=None,
+    verbose=0,
+    quiet=0,
+    compiler_directives={},
+    embedded_metadata={},
+    evaluate_tree_assertions=False,
+    emit_linenums=False,
+    relative_path_in_code_position_comments=True,
+    c_line_in_traceback=True,
+    language_level=None,  # warn but default to 2
+    formal_grammar=False,
+    gdb_debug=False,
+    compile_time_env=None,
+    module_name=None,
+    common_utility_include_dir=None,
+    output_dir=None,
+    build_dir=None,
+    cache=None,
+    create_extension=None,
+    np_pythran=False,
+    legacy_implicit_noexcept=None,
+)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/ParseTreeTransforms.pxd

@@ -0,0 +1,84 @@
+# cython: language_level=3str
+
+cimport cython
+
+from .Visitor cimport (
+    CythonTransform, VisitorTransform, TreeVisitor,
+    ScopeTrackingTransform, EnvTransform)
+
+# Don't include mixins, only the main classes.
+#cdef class SkipDeclarations:
+
+cdef class NormalizeTree(CythonTransform):
+    cdef bint is_in_statlist
+    cdef bint is_in_expr
+    cpdef visit_StatNode(self, node, is_listcontainer=*)
+
+cdef class PostParse(ScopeTrackingTransform):
+    cdef dict specialattribute_handlers
+    cdef size_t lambda_counter
+    cdef size_t genexpr_counter
+    cdef _visit_assignment_node(self, node, list expr_list)
+
+
+#def eliminate_rhs_duplicates(list expr_list_list, list ref_node_sequence)
+#def sort_common_subsequences(list items)
+@cython.locals(starred_targets=Py_ssize_t, lhs_size=Py_ssize_t, rhs_size=Py_ssize_t)
+cdef flatten_parallel_assignments(list input, list output)
+cdef map_starred_assignment(list lhs_targets, list starred_assignments, list lhs_args, list rhs_args)
+
+#class PxdPostParse(CythonTransform, SkipDeclarations):
+#class InterpretCompilerDirectives(CythonTransform, SkipDeclarations):
+#class WithTransform(VisitorTransform, SkipDeclarations):
+#class DecoratorTransform(CythonTransform, SkipDeclarations):
+
+#class AnalyseDeclarationsTransform(EnvTransform):
+
+cdef class AnalyseExpressionsTransform(CythonTransform):
+    pass
+
+cdef class ExpandInplaceOperators(EnvTransform):
+    pass
+
+cdef class AlignFunctionDefinitions(CythonTransform):
+    cdef dict directives
+    cdef set imported_names
+    cdef object scope
+
+@cython.final
+cdef class YieldNodeCollector(TreeVisitor):
+    cdef public list yields
+    cdef public list returns
+    cdef public list finallys
+    cdef public list excepts
+    cdef public bint has_return_value
+    cdef public bint has_yield
+    cdef public bint has_await
+    cdef list excludes
+
+@cython.final
+cdef class MarkClosureVisitor(CythonTransform):
+    cdef bint needs_closure
+    cdef list excludes
+
+@cython.final
+cdef class CreateClosureClasses(CythonTransform):
+    cdef list path
+    cdef bint in_lambda
+    cdef module_scope
+    cdef generator_class
+
+    cdef create_class_from_scope(self, node, target_module_scope, inner_node=*)
+    cdef find_entries_used_in_closures(self, node)
+
+#cdef class InjectGilHandling(VisitorTransform, SkipDeclarations):
+#    cdef bint nogil
+
+cdef class GilCheck(VisitorTransform):
+    cdef list env_stack
+    cdef bint nogil
+    cdef bint nogil_declarator_only
+    cdef bint current_gilstat_node_knows_gil_state
+
+cdef class TransformBuiltinMethods(EnvTransform):
+    cdef visit_cython_attribute(self, node)

.eggs/Cython-3.0.8-py3.9-win-amd64.egg/Cython/Compiler/Parsing.pxd

@@ -0,0 +1,205 @@
+# cython: language_level=3
+
+# We declare all of these here to type the first argument.
+
+from __future__ import absolute_import
+
+cimport cython
+from .Scanning cimport PyrexScanner
+
+ctypedef object (*p_sub_expr_func)(PyrexScanner obj)
+
+# entry points
+
+cpdef p_module(PyrexScanner s, pxd, full_module_name, ctx=*)
+cpdef p_code(PyrexScanner s, level= *, ctx=*)
+
+# internal parser states
+
+cdef p_ident(PyrexScanner s, message =*)
+cdef p_ident_list(PyrexScanner s)
+
+cdef tuple p_binop_operator(PyrexScanner s)
+cdef p_binop_expr(PyrexScanner s, ops, p_sub_expr_func p_sub_expr)
+cdef p_lambdef(PyrexScanner s)
+cdef p_test(PyrexScanner s)
+cdef p_test_allow_walrus_after(PyrexScanner s)
+cdef p_namedexpr_test(PyrexScanner s)
+cdef p_or_test(PyrexScanner s)
+cdef p_rassoc_binop_expr(PyrexScanner s, unicode op, p_sub_expr_func p_subexpr)
+cdef p_and_test(PyrexScanner s)
+cdef p_not_test(PyrexScanner s)
+cdef p_comparison(PyrexScanner s)
+cdef p_test_or_starred_expr(PyrexScanner s)
+cdef p_namedexpr_test_or_starred_expr(PyrexScanner s)
+cdef p_starred_expr(PyrexScanner s)
+cdef p_cascaded_cmp(PyrexScanner s)
+cdef p_cmp_op(PyrexScanner s)
+cdef p_bit_expr(PyrexScanner s)
+cdef p_xor_expr(PyrexScanner s)
+cdef p_and_expr(PyrexScanner s)
+cdef p_shift_expr(PyrexScanner s)
+cdef p_arith_expr(PyrexScanner s)
+cdef p_term(PyrexScanner s)
+cdef p_factor(PyrexScanner s)
+cdef _p_factor(PyrexScanner s)
+cdef p_typecast(PyrexScanner s)
+cdef p_sizeof(PyrexScanner s)
+cdef p_yield_expression(PyrexScanner s)
+cdef p_yield_statement(PyrexScanner s)
+cdef p_async_statement(PyrexScanner s, ctx, decorators)
+cdef p_power(PyrexScanner s)
+cdef p_new_expr(PyrexScanner s)
+cdef p_trailer(PyrexScanner s, node1)
+cdef p_call_parse_args(PyrexScanner s, bint allow_genexp = *)
+cdef p_call_build_packed_args(pos, positional_args, keyword_args)
+cdef p_call(PyrexScanner s, function)
+cdef p_index(PyrexScanner s, base)
+cdef tuple p_subscript_list(PyrexScanner s)
+cdef p_subscript(PyrexScanner s)
+cdef p_slice_element(PyrexScanner s, follow_set)
+cdef expect_ellipsis(PyrexScanner s)
+cdef make_slice_nodes(pos, subscripts)
+cpdef make_slice_node(pos, start, stop = *, step = *)
+cdef p_atom(PyrexScanner s)
+@cython.locals(value=unicode)
+cdef p_int_literal(PyrexScanner s)
+cdef p_name(PyrexScanner s, name)
+cdef wrap_compile_time_constant(pos, value)
+cdef p_cat_string_literal(PyrexScanner s)
+cdef p_opt_string_literal(PyrexScanner s, required_type=*)
+cdef bint check_for_non_ascii_characters(unicode string)
+@cython.locals(systr=unicode, is_python3_source=bint, is_raw=bint)
+cdef p_string_literal(PyrexScanner s, kind_override=*)
+cdef _append_escape_sequence(kind, builder, unicode escape_sequence, PyrexScanner s)
+cdef tuple _f_string_error_pos(pos, string, Py_ssize_t i)
+@cython.locals(i=Py_ssize_t, size=Py_ssize_t, c=Py_UCS4, next_start=Py_ssize_t)
+cdef list p_f_string(PyrexScanner s, unicode_value, pos, bint is_raw)
+@cython.locals(i=Py_ssize_t, size=Py_ssize_t, c=Py_UCS4, quote_char=Py_UCS4, NO_CHAR=Py_UCS4)
+cdef tuple p_f_string_expr(PyrexScanner s, unicode_value, pos, Py_ssize_t starting_index, bint is_raw)
+cdef p_list_maker(PyrexScanner s)
+cdef p_comp_iter(PyrexScanner s, body)
+cdef p_comp_for(PyrexScanner s, body)
+cdef p_comp_if(PyrexScanner s, body)
+cdef p_dict_or_set_maker(PyrexScanner s)
+cdef p_backquote_expr(PyrexScanner s)
+cdef p_simple_expr_list(PyrexScanner s, expr=*)
+cdef p_test_or_starred_expr_list(PyrexScanner s, expr=*)
+cdef p_namedexpr_test_or_starred_expr_list(s, expr=*)
+cdef p_testlist(PyrexScanner s)
+cdef p_testlist_star_expr(PyrexScanner s)
+cdef p_testlist_comp(PyrexScanner s)
+cdef p_genexp(PyrexScanner s, expr)
+
+#-------------------------------------------------------
+#
+#   Statements
+#
+#-------------------------------------------------------
+
+cdef p_global_statement(PyrexScanner s)
+cdef p_nonlocal_statement(PyrexScanner s)
+cdef p_expression_or_assignment(PyrexScanner s)
+cdef p_print_statement(PyrexScanner s)
+cdef p_exec_statement(PyrexScanner s)
+cdef p_del_statement(PyrexScanner s)
+cdef p_pass_statement(PyrexScanner s, bint with_newline = *)
+cdef p_break_statement(PyrexScanner s)
+cdef p_continue_statement(PyrexScanner s)
+cdef p_return_statement(PyrexScanner s)
+cdef p_raise_statement(PyrexScanner s)
+cdef p_import_statement(PyrexScanner s)
+cdef p_from_import_statement(PyrexScanner s, bint first_statement = *)
+cdef p_imported_name(PyrexScanner s)
+cdef p_dotted_name(PyrexScanner s, bint as_allowed)
+cdef p_as_name(PyrexScanner s)
+cdef p_assert_statement(PyrexScanner s)
+cdef p_if_statement(PyrexScanner s)
+cdef p_if_clause(PyrexScanner s)
+cdef p_else_clause(PyrexScanner s)
+cdef p_while_statement(PyrexScanner s)
+cdef p_for_statement(PyrexScanner s, bint is_async=*)
+cdef dict p_for_bounds(PyrexScanner s, bint allow_testlist=*, bint is_async=*)
+cdef p_for_from_relation(PyrexScanner s)
+cdef p_for_from_step(PyrexScanner s)
+cdef p_target(PyrexScanner s, terminator)
+cdef p_for_target(PyrexScanner s)
+cdef p_for_iterator(PyrexScanner s, bint allow_testlist=*, bint is_async=*)
+cdef p_try_statement(PyrexScanner s)
+cdef p_except_clause(PyrexScanner s)
+cdef p_include_statement(PyrexScanner s, ctx)
+cdef p_with_statement(PyrexScanner s)
+cdef p_with_items(PyrexScanner s, bint is_async=*)
+cdef p_with_items_list(PyrexScanner s, bint is_async)
+cdef tuple p_with_item(PyrexScanner s, bint is_async)
+cdef p_with_template(PyrexScanner s)
+cdef p_simple_statement(PyrexScanner s, bint first_statement = *)
+cdef p_simple_statement_list(PyrexScanner s, ctx, bint first_statement = *)
+cdef p_compile_time_expr(PyrexScanner s)
+cdef p_DEF_statement(PyrexScanner s)
+cdef p_IF_statement(PyrexScanner s, ctx)
+cdef p_statement(PyrexScanner s, ctx, bint first_statement = *)
+cdef p_statement_list(PyrexScanner s, ctx, bint first_statement = *)
+cdef p_suite(PyrexScanner s, ctx = *)
+cdef tuple p_suite_with_docstring(PyrexScanner s, ctx, bint with_doc_only=*)
+cdef tuple _extract_docstring(node)
+cdef p_positional_and_keyword_args(PyrexScanner s, end_sy_set, templates = *)
+
+cpdef p_c_base_type(PyrexScanner s, bint nonempty = *, templates = *)
+cdef p_calling_convention(PyrexScanner s)
+cdef p_c_complex_base_type(PyrexScanner s, templates = *)
+cdef p_c_simple_base_type(PyrexScanner s, bint nonempty, templates = *)
+cdef p_buffer_or_template(PyrexScanner s, base_type_node, templates)
+cdef p_bracketed_base_type(PyrexScanner s, base_type_node, nonempty, empty)
+cdef is_memoryviewslice_access(PyrexScanner s)
+cdef p_memoryviewslice_access(PyrexScanner s, base_type_node)
+cdef bint looking_at_name(PyrexScanner s) except -2
+cdef object looking_at_expr(PyrexScanner s)# except -2
+cdef bint looking_at_base_type(PyrexScanner s) except -2
+cdef bint looking_at_dotted_name(PyrexScanner s) except -2
+cdef p_sign_and_longness(PyrexScanner s)
+cdef p_opt_cname(PyrexScanner s)
+cpdef p_c_declarator(PyrexScanner s, ctx = *, bint empty = *, bint is_type = *, bint cmethod_flag = *,
+                   bint assignable = *, bint nonempty = *,
+                   bint calling_convention_allowed = *)
+cdef p_c_array_declarator(PyrexScanner s, base)
+cdef p_c_func_declarator(PyrexScanner s, pos, ctx, base, bint cmethod_flag)
+cdef p_c_simple_declarator(PyrexScanner s, ctx, bint empty, bint is_type, bint cmethod_flag,
+                          bint assignable, bint nonempty)
+cdef p_nogil(PyrexScanner s)
+cdef p_with_gil(PyrexScanner s)
+cdef p_exception_value_clause(PyrexScanner s, bint is_extern)
+cpdef p_c_arg_list(PyrexScanner s, ctx = *, bint in_pyfunc = *, bint cmethod_flag = *,
+                   bint nonempty_declarators = *, bint kw_only = *, bint annotated = *)
+cdef p_optional_ellipsis(PyrexScanner s)
+cdef p_c_arg_decl(PyrexScanner s, ctx, in_pyfunc, bint cmethod_flag = *, bint nonempty = *, bint kw_only = *, bint annotated = *)
+cdef p_api(PyrexScanner s)
+cdef p_cdef_statement(PyrexScanner s, ctx)
+cdef p_cdef_block(PyrexScanner s, ctx)
+cdef p_cdef_extern_block(PyrexScanner s, pos, ctx)
+cdef p_c_enum_definition(PyrexScanner s, pos, ctx)
+cdef p_c_enum_line(PyrexScanner s, ctx, list items)
+cdef p_c_enum_item(PyrexScanner s, ctx, list items)
+cdef p_c_struct_or_union_definition(PyrexScanner s, pos, ctx)
+cdef p_fused_definition(PyrexScanner s, pos, ctx)
+cdef p_struct_enum(PyrexScanner s, pos, ctx)
+cdef p_visibility(PyrexScanner s, prev_visibility)
+cdef p_c_modifiers(PyrexScanner s)
+cdef p_c_func_or_var_declaration(PyrexScanner s, pos, ctx)
+cdef p_ctypedef_statement(PyrexScanner s, ctx)
+cdef p_decorators(PyrexScanner s)
+cdef _reject_cdef_modifier_in_py(PyrexScanner s, name)
+cdef p_def_statement(PyrexScanner s, list decorators=*, bint is_async_def=*)
+cdef p_varargslist(PyrexScanner s, terminator=*, bint annotated = *)
+cdef p_py_arg_decl(PyrexScanner s, bint annotated = *)
+cdef p_class_statement(PyrexScanner s, decorators)
+cdef p_c_class_definition(PyrexScanner s, pos,  ctx)
+cdef tuple p_c_class_options(PyrexScanner s)
+cdef p_property_decl(PyrexScanner s)
+cdef p_doc_string(PyrexScanner s)
+cdef p_ignorable_statement(PyrexScanner s)
+cdef dict p_compiler_directive_comments(PyrexScanner s)
+cdef p_template_definition(PyrexScanner s)
+cdef p_cpp_class_definition(PyrexScanner s, pos, ctx)
+cdef p_cpp_class_attribute(PyrexScanner s, ctx)
+cdef p_annotation(PyrexScanner s)