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"""
crackfortran --- read fortran (77,90) code and extract declaration information.
Copyright 1999 -- 2011 Pearu Peterson all rights reserved.
Copyright 2011 -- present NumPy Developers.
Permission to use, modify, and distribute this software is given under the
terms of the NumPy License.
NO WARRANTY IS EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
Usage of crackfortran:
======================
Command line keys: -quiet,-verbose,-fix,-f77,-f90,-show,-h <pyffilename>
-m <module name for f77 routines>,--ignore-contains
Functions: crackfortran, crack2fortran
The following Fortran statements/constructions are supported
(or will be if needed):
block data,byte,call,character,common,complex,contains,data,
dimension,double complex,double precision,end,external,function,
implicit,integer,intent,interface,intrinsic,
logical,module,optional,parameter,private,public,
program,real,(sequence?),subroutine,type,use,virtual,
include,pythonmodule
Note: 'virtual' is mapped to 'dimension'.
Note: 'implicit integer (z) static (z)' is 'implicit static (z)' (this is minor bug).
Note: code after 'contains' will be ignored until its scope ends.
Note: 'common' statement is extended: dimensions are moved to variable definitions
Note: f2py directive: <commentchar>f2py<line> is read as <line>
Note: pythonmodule is introduced to represent Python module
Usage:
`postlist=crackfortran(files)`
`postlist` contains declaration information read from the list of files `files`.
`crack2fortran(postlist)` returns a fortran code to be saved to pyf-file
`postlist` has the following structure:
*** it is a list of dictionaries containing `blocks':
B = {'block','body','vars','parent_block'[,'name','prefix','args','result',
'implicit','externals','interfaced','common','sortvars',
'commonvars','note']}
B['block'] = 'interface' | 'function' | 'subroutine' | 'module' |
'program' | 'block data' | 'type' | 'pythonmodule' |
'abstract interface'
B['body'] --- list containing `subblocks' with the same structure as `blocks'
B['parent_block'] --- dictionary of a parent block:
C['body'][<index>]['parent_block'] is C
B['vars'] --- dictionary of variable definitions
B['sortvars'] --- dictionary of variable definitions sorted by dependence (independent first)
B['name'] --- name of the block (not if B['block']=='interface')
B['prefix'] --- prefix string (only if B['block']=='function')
B['args'] --- list of argument names if B['block']== 'function' | 'subroutine'
B['result'] --- name of the return value (only if B['block']=='function')
B['implicit'] --- dictionary {'a':<variable definition>,'b':...} | None
B['externals'] --- list of variables being external
B['interfaced'] --- list of variables being external and defined
B['common'] --- dictionary of common blocks (list of objects)
B['commonvars'] --- list of variables used in common blocks (dimensions are moved to variable definitions)
B['from'] --- string showing the 'parents' of the current block
B['use'] --- dictionary of modules used in current block:
{<modulename>:{['only':<0|1>],['map':{<local_name1>:<use_name1>,...}]}}
B['note'] --- list of LaTeX comments on the block
B['f2pyenhancements'] --- optional dictionary
{'threadsafe':'','fortranname':<name>,
'callstatement':<C-expr>|<multi-line block>,
'callprotoargument':<C-expr-list>,
'usercode':<multi-line block>|<list of multi-line blocks>,
'pymethoddef:<multi-line block>'
}
B['entry'] --- dictionary {entryname:argslist,..}
B['varnames'] --- list of variable names given in the order of reading the
Fortran code, useful for derived types.
B['saved_interface'] --- a string of scanned routine signature, defines explicit interface
*** Variable definition is a dictionary
D = B['vars'][<variable name>] =
{'typespec'[,'attrspec','kindselector','charselector','=','typename']}
D['typespec'] = 'byte' | 'character' | 'complex' | 'double complex' |
'double precision' | 'integer' | 'logical' | 'real' | 'type'
D['attrspec'] --- list of attributes (e.g. 'dimension(<arrayspec>)',
'external','intent(in|out|inout|hide|c|callback|cache|aligned4|aligned8|aligned16)',
'optional','required', etc)
K = D['kindselector'] = {['*','kind']} (only if D['typespec'] =
'complex' | 'integer' | 'logical' | 'real' )
C = D['charselector'] = {['*','len','kind','f2py_len']}
(only if D['typespec']=='character')
D['='] --- initialization expression string
D['typename'] --- name of the type if D['typespec']=='type'
D['dimension'] --- list of dimension bounds
D['intent'] --- list of intent specifications
D['depend'] --- list of variable names on which current variable depends on
D['check'] --- list of C-expressions; if C-expr returns zero, exception is raised
D['note'] --- list of LaTeX comments on the variable
*** Meaning of kind/char selectors (few examples):
D['typespec>']*K['*']
D['typespec'](kind=K['kind'])
character*C['*']
character(len=C['len'],kind=C['kind'], f2py_len=C['f2py_len'])
(see also fortran type declaration statement formats below)
Fortran 90 type declaration statement format (F77 is subset of F90)
====================================================================
(Main source: IBM XL Fortran 5.1 Language Reference Manual)
type declaration = <typespec> [[<attrspec>]::] <entitydecl>
<typespec> = byte |
character[<charselector>] |
complex[<kindselector>] |
double complex |
double precision |
integer[<kindselector>] |
logical[<kindselector>] |
real[<kindselector>] |
type(<typename>)
<charselector> = * <charlen> |
([len=]<len>[,[kind=]<kind>]) |
(kind=<kind>[,len=<len>])
<kindselector> = * <intlen> |
([kind=]<kind>)
<attrspec> = comma separated list of attributes.
Only the following attributes are used in
building up the interface:
external
(parameter --- affects '=' key)
optional
intent
Other attributes are ignored.
<intentspec> = in | out | inout
<arrayspec> = comma separated list of dimension bounds.
<entitydecl> = <name> [[*<charlen>][(<arrayspec>)] | [(<arrayspec>)]*<charlen>]
[/<init_expr>/ | =<init_expr>] [,<entitydecl>]
In addition, the following attributes are used: check,depend,note
TODO:
* Apply 'parameter' attribute (e.g. 'integer parameter :: i=2' 'real x(i)'
-> 'real x(2)')
The above may be solved by creating appropriate preprocessor program, for example.
"""
import sys
import string
import fileinput
import re
import os
import copy
import platform
import codecs
from pathlib import Path
try:
import charset_normalizer
except ImportError:
charset_normalizer = None
from . import __version__
# The environment provided by auxfuncs.py is needed for some calls to eval.
# As the needed functions cannot be determined by static inspection of the
# code, it is safest to use import * pending a major refactoring of f2py.
from .auxfuncs import *
from . import symbolic
f2py_version = __version__.version
# Global flags:
strictf77 = 1 # Ignore `!' comments unless line[0]=='!'
sourcecodeform = 'fix' # 'fix','free'
quiet = 0 # Be verbose if 0 (Obsolete: not used any more)
verbose = 1 # Be quiet if 0, extra verbose if > 1.
tabchar = 4 * ' '
pyffilename = ''
f77modulename = ''
skipemptyends = 0 # for old F77 programs without 'program' statement
ignorecontains = 1
dolowercase = 1
debug = []
# Global variables
beginpattern = ''
currentfilename = ''
expectbegin = 1
f90modulevars = {}
filepositiontext = ''
gotnextfile = 1
groupcache = None
groupcounter = 0
grouplist = {groupcounter: []}
groupname = ''
include_paths = []
neededmodule = -1
onlyfuncs = []
previous_context = None
skipblocksuntil = -1
skipfuncs = []
skipfunctions = []
usermodules = []
def reset_global_f2py_vars():
global groupcounter, grouplist, neededmodule, expectbegin
global skipblocksuntil, usermodules, f90modulevars, gotnextfile
global filepositiontext, currentfilename, skipfunctions, skipfuncs
global onlyfuncs, include_paths, previous_context
global strictf77, sourcecodeform, quiet, verbose, tabchar, pyffilename
global f77modulename, skipemptyends, ignorecontains, dolowercase, debug
# flags
strictf77 = 1
sourcecodeform = 'fix'
quiet = 0
verbose = 1
tabchar = 4 * ' '
pyffilename = ''
f77modulename = ''
skipemptyends = 0
ignorecontains = 1
dolowercase = 1
debug = []
# variables
groupcounter = 0
grouplist = {groupcounter: []}
neededmodule = -1
expectbegin = 1
skipblocksuntil = -1
usermodules = []
f90modulevars = {}
gotnextfile = 1
filepositiontext = ''
currentfilename = ''
skipfunctions = []
skipfuncs = []
onlyfuncs = []
include_paths = []
previous_context = None
def outmess(line, flag=1):
global filepositiontext
if not verbose:
return
if not quiet:
if flag:
sys.stdout.write(filepositiontext)
sys.stdout.write(line)
re._MAXCACHE = 50
defaultimplicitrules = {}
for c in "abcdefghopqrstuvwxyz$_":
defaultimplicitrules[c] = {'typespec': 'real'}
for c in "ijklmn":
defaultimplicitrules[c] = {'typespec': 'integer'}
badnames = {}
invbadnames = {}
for n in ['int', 'double', 'float', 'char', 'short', 'long', 'void', 'case', 'while',
'return', 'signed', 'unsigned', 'if', 'for', 'typedef', 'sizeof', 'union',
'struct', 'static', 'register', 'new', 'break', 'do', 'goto', 'switch',
'continue', 'else', 'inline', 'extern', 'delete', 'const', 'auto',
'len', 'rank', 'shape', 'index', 'slen', 'size', '_i',
'max', 'min',
'flen', 'fshape',
'string', 'complex_double', 'float_double', 'stdin', 'stderr', 'stdout',
'type', 'default']:
badnames[n] = n + '_bn'
invbadnames[n + '_bn'] = n
def rmbadname1(name):
if name in badnames:
errmess('rmbadname1: Replacing "%s" with "%s".\n' %
(name, badnames[name]))
return badnames[name]
return name
def rmbadname(names):
return [rmbadname1(_m) for _m in names]
def undo_rmbadname1(name):
if name in invbadnames:
errmess('undo_rmbadname1: Replacing "%s" with "%s".\n'
% (name, invbadnames[name]))
return invbadnames[name]
return name
def undo_rmbadname(names):
return [undo_rmbadname1(_m) for _m in names]
_has_f_header = re.compile(r'-\*-\s*fortran\s*-\*-', re.I).search
_has_f90_header = re.compile(r'-\*-\s*f90\s*-\*-', re.I).search
_has_fix_header = re.compile(r'-\*-\s*fix\s*-\*-', re.I).search
_free_f90_start = re.compile(r'[^c*]\s*[^\s\d\t]', re.I).match
# Extensions
COMMON_FREE_EXTENSIONS = ['.f90', '.f95', '.f03', '.f08']
COMMON_FIXED_EXTENSIONS = ['.for', '.ftn', '.f77', '.f']
def openhook(filename, mode):
"""Ensures that filename is opened with correct encoding parameter.
This function uses charset_normalizer package, when available, for
determining the encoding of the file to be opened. When charset_normalizer
is not available, the function detects only UTF encodings, otherwise, ASCII
encoding is used as fallback.
"""
# Reads in the entire file. Robust detection of encoding.
# Correctly handles comments or late stage unicode characters
# gh-22871
if charset_normalizer is not None:
encoding = charset_normalizer.from_path(filename).best().encoding
else:
# hint: install charset_normalizer for correct encoding handling
# No need to read the whole file for trying with startswith
nbytes = min(32, os.path.getsize(filename))
with open(filename, 'rb') as fhandle:
raw = fhandle.read(nbytes)
if raw.startswith(codecs.BOM_UTF8):
encoding = 'UTF-8-SIG'
elif raw.startswith((codecs.BOM_UTF32_LE, codecs.BOM_UTF32_BE)):
encoding = 'UTF-32'
elif raw.startswith((codecs.BOM_LE, codecs.BOM_BE)):
encoding = 'UTF-16'
else:
# Fallback, without charset_normalizer
encoding = 'ascii'
return open(filename, mode, encoding=encoding)
def is_free_format(fname):
"""Check if file is in free format Fortran."""
# f90 allows both fixed and free format, assuming fixed unless
# signs of free format are detected.
result = False
if Path(fname).suffix.lower() in COMMON_FREE_EXTENSIONS:
result = True
with openhook(fname, 'r') as fhandle:
line = fhandle.readline()
n = 15 # the number of non-comment lines to scan for hints
if _has_f_header(line):
n = 0
elif _has_f90_header(line):
n = 0
result = True
while n > 0 and line:
if line[0] != '!' and line.strip():
n -= 1
if (line[0] != '\t' and _free_f90_start(line[:5])) or line[-2:-1] == '&':
result = True
break
line = fhandle.readline()
return result
# Read fortran (77,90) code
def readfortrancode(ffile, dowithline=show, istop=1):
"""
Read fortran codes from files and
1) Get rid of comments, line continuations, and empty lines; lower cases.
2) Call dowithline(line) on every line.
3) Recursively call itself when statement \"include '<filename>'\" is met.
"""
global gotnextfile, filepositiontext, currentfilename, sourcecodeform, strictf77
global beginpattern, quiet, verbose, dolowercase, include_paths
if not istop:
saveglobals = gotnextfile, filepositiontext, currentfilename, sourcecodeform, strictf77,\
beginpattern, quiet, verbose, dolowercase
if ffile == []:
return
localdolowercase = dolowercase
# cont: set to True when the content of the last line read
# indicates statement continuation
cont = False
finalline = ''
ll = ''
includeline = re.compile(
r'\s*include\s*(\'|")(?P<name>[^\'"]*)(\'|")', re.I)
cont1 = re.compile(r'(?P<line>.*)&\s*\Z')
cont2 = re.compile(r'(\s*&|)(?P<line>.*)')
mline_mark = re.compile(r".*?'''")
if istop:
dowithline('', -1)
ll, l1 = '', ''
spacedigits = [' '] + [str(_m) for _m in range(10)]
filepositiontext = ''
fin = fileinput.FileInput(ffile, openhook=openhook)
while True:
try:
l = fin.readline()
except UnicodeDecodeError as msg:
raise Exception(
f'readfortrancode: reading {fin.filename()}#{fin.lineno()}'
f' failed with\n{msg}.\nIt is likely that installing charset_normalizer'
' package will help f2py determine the input file encoding'
' correctly.')
if not l:
break
if fin.isfirstline():
filepositiontext = ''
currentfilename = fin.filename()
gotnextfile = 1
l1 = l
strictf77 = 0
sourcecodeform = 'fix'
ext = os.path.splitext(currentfilename)[1]
if Path(currentfilename).suffix.lower() in COMMON_FIXED_EXTENSIONS and \
not (_has_f90_header(l) or _has_fix_header(l)):
strictf77 = 1
elif is_free_format(currentfilename) and not _has_fix_header(l):
sourcecodeform = 'free'
if strictf77:
beginpattern = beginpattern77
else:
beginpattern = beginpattern90
outmess('\tReading file %s (format:%s%s)\n'
% (repr(currentfilename), sourcecodeform,
strictf77 and ',strict' or ''))
l = l.expandtabs().replace('\xa0', ' ')
# Get rid of newline characters
while not l == '':
if l[-1] not in "\n\r\f":
break
l = l[:-1]
# Do not lower for directives, gh-2547, gh-27697, gh-26681
is_f2py_directive = False
# Unconditionally remove comments
(l, rl) = split_by_unquoted(l, '!')
l += ' '
if rl[:5].lower() == '!f2py': # f2py directive
l, _ = split_by_unquoted(l + 4 * ' ' + rl[5:], '!')
is_f2py_directive = True
if l.strip() == '': # Skip empty line
if sourcecodeform == 'free':
# In free form, a statement continues in the next line
# that is not a comment line [3.3.2.4^1], lines with
# blanks are comment lines [3.3.2.3^1]. Hence, the
# line continuation flag must retain its state.
pass
else:
# In fixed form, statement continuation is determined
# by a non-blank character at the 6-th position. Empty
# line indicates a start of a new statement
# [3.3.3.3^1]. Hence, the line continuation flag must
# be reset.
cont = False
continue
if sourcecodeform == 'fix':
if l[0] in ['*', 'c', '!', 'C', '#']:
if l[1:5].lower() == 'f2py': # f2py directive
l = ' ' + l[5:]
is_f2py_directive = True
else: # Skip comment line
cont = False
is_f2py_directive = False
continue
elif strictf77:
if len(l) > 72:
l = l[:72]
if l[0] not in spacedigits:
raise Exception('readfortrancode: Found non-(space,digit) char '
'in the first column.\n\tAre you sure that '
'this code is in fix form?\n\tline=%s' % repr(l))
if (not cont or strictf77) and (len(l) > 5 and not l[5] == ' '):
# Continuation of a previous line
ll = ll + l[6:]
finalline = ''
origfinalline = ''
else:
r = cont1.match(l)
if r:
l = r.group('line') # Continuation follows ..
if cont:
ll = ll + cont2.match(l).group('line')
finalline = ''
origfinalline = ''
else:
# clean up line beginning from possible digits.
l = ' ' + l[5:]
# f2py directives are already stripped by this point
if localdolowercase:
finalline = ll.lower()
else:
finalline = ll
origfinalline = ll
ll = l
elif sourcecodeform == 'free':
if not cont and ext == '.pyf' and mline_mark.match(l):
l = l + '\n'
while True:
lc = fin.readline()
if not lc:
errmess(
'Unexpected end of file when reading multiline\n')
break
l = l + lc
if mline_mark.match(lc):
break
l = l.rstrip()
r = cont1.match(l)
if r:
l = r.group('line') # Continuation follows ..
if cont:
ll = ll + cont2.match(l).group('line')
finalline = ''
origfinalline = ''
else:
if localdolowercase:
# only skip lowering for C style constructs
# gh-2547, gh-27697, gh-26681, gh-28014
finalline = ll.lower() if not (is_f2py_directive and iscstyledirective(ll)) else ll
else:
finalline = ll
origfinalline = ll
ll = l
cont = (r is not None)
else:
raise ValueError(
"Flag sourcecodeform must be either 'fix' or 'free': %s" % repr(sourcecodeform))
filepositiontext = 'Line #%d in %s:"%s"\n\t' % (
fin.filelineno() - 1, currentfilename, l1)
m = includeline.match(origfinalline)
if m:
fn = m.group('name')
if os.path.isfile(fn):
readfortrancode(fn, dowithline=dowithline, istop=0)
else:
include_dirs = [
os.path.dirname(currentfilename)] + include_paths
foundfile = 0
for inc_dir in include_dirs:
fn1 = os.path.join(inc_dir, fn)
if os.path.isfile(fn1):
foundfile = 1
readfortrancode(fn1, dowithline=dowithline, istop=0)
break
if not foundfile:
outmess('readfortrancode: could not find include file %s in %s. Ignoring.\n' % (
repr(fn), os.pathsep.join(include_dirs)))
else:
dowithline(finalline)
l1 = ll
# Last line should never have an f2py directive anyway
if localdolowercase:
finalline = ll.lower()
else:
finalline = ll
origfinalline = ll
filepositiontext = 'Line #%d in %s:"%s"\n\t' % (
fin.filelineno() - 1, currentfilename, l1)
m = includeline.match(origfinalline)
if m:
fn = m.group('name')
if os.path.isfile(fn):
readfortrancode(fn, dowithline=dowithline, istop=0)
else:
include_dirs = [os.path.dirname(currentfilename)] + include_paths
foundfile = 0
for inc_dir in include_dirs:
fn1 = os.path.join(inc_dir, fn)
if os.path.isfile(fn1):
foundfile = 1
readfortrancode(fn1, dowithline=dowithline, istop=0)
break
if not foundfile:
outmess('readfortrancode: could not find include file %s in %s. Ignoring.\n' % (
repr(fn), os.pathsep.join(include_dirs)))
else:
dowithline(finalline)
filepositiontext = ''
fin.close()
if istop:
dowithline('', 1)
else:
gotnextfile, filepositiontext, currentfilename, sourcecodeform, strictf77,\
beginpattern, quiet, verbose, dolowercase = saveglobals
# Crack line
beforethisafter = r'\s*(?P<before>%s(?=\s*(\b(%s)\b)))' + \
r'\s*(?P<this>(\b(%s)\b))' + \
r'\s*(?P<after>%s)\s*\Z'
##
fortrantypes = r'character|logical|integer|real|complex|double\s*(precision\s*(complex|)|complex)|type(?=\s*\([\w\s,=(*)]*\))|byte'
typespattern = re.compile(
beforethisafter % ('', fortrantypes, fortrantypes, '.*'), re.I), 'type'
typespattern4implicit = re.compile(beforethisafter % (
'', fortrantypes + '|static|automatic|undefined', fortrantypes + '|static|automatic|undefined', '.*'), re.I)
#
functionpattern = re.compile(beforethisafter % (
r'([a-z]+[\w\s(=*+-/)]*?|)', 'function', 'function', '.*'), re.I), 'begin'
subroutinepattern = re.compile(beforethisafter % (
r'[a-z\s]*?', 'subroutine', 'subroutine', '.*'), re.I), 'begin'
# modulepattern=re.compile(beforethisafter%('[a-z\s]*?','module','module','.*'),re.I),'begin'
#
groupbegins77 = r'program|block\s*data'
beginpattern77 = re.compile(
beforethisafter % ('', groupbegins77, groupbegins77, '.*'), re.I), 'begin'
groupbegins90 = groupbegins77 + \
r'|module(?!\s*procedure)|python\s*module|(abstract|)\s*interface|' + \
r'type(?!\s*\()'
beginpattern90 = re.compile(
beforethisafter % ('', groupbegins90, groupbegins90, '.*'), re.I), 'begin'
groupends = (r'end|endprogram|endblockdata|endmodule|endpythonmodule|'
r'endinterface|endsubroutine|endfunction')
endpattern = re.compile(
beforethisafter % ('', groupends, groupends, '.*'), re.I), 'end'
# block, the Fortran 2008 construct needs special handling in the rest of the file
endifs = r'end\s*(if|do|where|select|while|forall|associate|' + \
r'critical|enum|team)'
endifpattern = re.compile(
beforethisafter % (r'[\w]*?', endifs, endifs, '.*'), re.I), 'endif'
#
moduleprocedures = r'module\s*procedure'
moduleprocedurepattern = re.compile(
beforethisafter % ('', moduleprocedures, moduleprocedures, '.*'), re.I), \
'moduleprocedure'
implicitpattern = re.compile(
beforethisafter % ('', 'implicit', 'implicit', '.*'), re.I), 'implicit'
dimensionpattern = re.compile(beforethisafter % (
'', 'dimension|virtual', 'dimension|virtual', '.*'), re.I), 'dimension'
externalpattern = re.compile(
beforethisafter % ('', 'external', 'external', '.*'), re.I), 'external'
optionalpattern = re.compile(
beforethisafter % ('', 'optional', 'optional', '.*'), re.I), 'optional'
requiredpattern = re.compile(
beforethisafter % ('', 'required', 'required', '.*'), re.I), 'required'
publicpattern = re.compile(
beforethisafter % ('', 'public', 'public', '.*'), re.I), 'public'
privatepattern = re.compile(
beforethisafter % ('', 'private', 'private', '.*'), re.I), 'private'
intrinsicpattern = re.compile(
beforethisafter % ('', 'intrinsic', 'intrinsic', '.*'), re.I), 'intrinsic'
intentpattern = re.compile(beforethisafter % (
'', 'intent|depend|note|check', 'intent|depend|note|check', r'\s*\(.*?\).*'), re.I), 'intent'
parameterpattern = re.compile(
beforethisafter % ('', 'parameter', 'parameter', r'\s*\(.*'), re.I), 'parameter'
datapattern = re.compile(
beforethisafter % ('', 'data', 'data', '.*'), re.I), 'data'
callpattern = re.compile(
beforethisafter % ('', 'call', 'call', '.*'), re.I), 'call'
entrypattern = re.compile(
beforethisafter % ('', 'entry', 'entry', '.*'), re.I), 'entry'
callfunpattern = re.compile(
beforethisafter % ('', 'callfun', 'callfun', '.*'), re.I), 'callfun'
commonpattern = re.compile(
beforethisafter % ('', 'common', 'common', '.*'), re.I), 'common'
usepattern = re.compile(
beforethisafter % ('', 'use', 'use', '.*'), re.I), 'use'
containspattern = re.compile(
beforethisafter % ('', 'contains', 'contains', ''), re.I), 'contains'
formatpattern = re.compile(
beforethisafter % ('', 'format', 'format', '.*'), re.I), 'format'
# Non-fortran and f2py-specific statements
f2pyenhancementspattern = re.compile(beforethisafter % ('', 'threadsafe|fortranname|callstatement|callprotoargument|usercode|pymethoddef',
'threadsafe|fortranname|callstatement|callprotoargument|usercode|pymethoddef', '.*'), re.I | re.S), 'f2pyenhancements'
multilinepattern = re.compile(
r"\s*(?P<before>''')(?P<this>.*?)(?P<after>''')\s*\Z", re.S), 'multiline'
##
def split_by_unquoted(line, characters):
"""
Splits the line into (line[:i], line[i:]),
where i is the index of first occurrence of one of the characters
not within quotes, or len(line) if no such index exists
"""
assert not (set('"\'') & set(characters)), "cannot split by unquoted quotes"
r = re.compile(
r"\A(?P<before>({single_quoted}|{double_quoted}|{not_quoted})*)"
r"(?P<after>{char}.*)\Z".format(
not_quoted="[^\"'{}]".format(re.escape(characters)),
char="[{}]".format(re.escape(characters)),
single_quoted=r"('([^'\\]|(\\.))*')",
double_quoted=r'("([^"\\]|(\\.))*")'))
m = r.match(line)
if m:
d = m.groupdict()
return (d["before"], d["after"])
return (line, "")
def _simplifyargs(argsline):
a = []
for n in markoutercomma(argsline).split('@,@'):
for r in '(),':
n = n.replace(r, '_')
a.append(n)
return ','.join(a)
crackline_re_1 = re.compile(r'\s*(?P<result>\b[a-z]+\w*\b)\s*=.*', re.I)
crackline_bind_1 = re.compile(r'\s*(?P<bind>\b[a-z]+\w*\b)\s*=.*', re.I)
crackline_bindlang = re.compile(r'\s*bind\(\s*(?P<lang>[^,]+)\s*,\s*name\s*=\s*"(?P<lang_name>[^"]+)"\s*\)', re.I)
def crackline(line, reset=0):
"""
reset=-1 --- initialize
reset=0 --- crack the line
reset=1 --- final check if mismatch of blocks occurred
Cracked data is saved in grouplist[0].
"""
global beginpattern, groupcounter, groupname, groupcache, grouplist
global filepositiontext, currentfilename, neededmodule, expectbegin
global skipblocksuntil, skipemptyends, previous_context, gotnextfile
_, has_semicolon = split_by_unquoted(line, ";")
if has_semicolon and not (f2pyenhancementspattern[0].match(line) or
multilinepattern[0].match(line)):
# XXX: non-zero reset values need testing
assert reset == 0, repr(reset)
# split line on unquoted semicolons
line, semicolon_line = split_by_unquoted(line, ";")
while semicolon_line:
crackline(line, reset)
line, semicolon_line = split_by_unquoted(semicolon_line[1:], ";")
crackline(line, reset)
return
if reset < 0:
groupcounter = 0
groupname = {groupcounter: ''}
groupcache = {groupcounter: {}}
grouplist = {groupcounter: []}
groupcache[groupcounter]['body'] = []
groupcache[groupcounter]['vars'] = {}
groupcache[groupcounter]['block'] = ''
groupcache[groupcounter]['name'] = ''
neededmodule = -1
skipblocksuntil = -1
return
if reset > 0:
fl = 0
if f77modulename and neededmodule == groupcounter:
fl = 2
while groupcounter > fl:
outmess('crackline: groupcounter=%s groupname=%s\n' %
(repr(groupcounter), repr(groupname)))
outmess(
'crackline: Mismatch of blocks encountered. Trying to fix it by assuming "end" statement.\n')
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1
if f77modulename and neededmodule == groupcounter:
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1 # end interface
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1 # end module
neededmodule = -1
return
if line == '':
return
flag = 0
for pat in [dimensionpattern, externalpattern, intentpattern, optionalpattern,
requiredpattern,
parameterpattern, datapattern, publicpattern, privatepattern,
intrinsicpattern,
endifpattern, endpattern,
formatpattern,
beginpattern, functionpattern, subroutinepattern,
implicitpattern, typespattern, commonpattern,
callpattern, usepattern, containspattern,
entrypattern,
f2pyenhancementspattern,
multilinepattern,
moduleprocedurepattern
]:
m = pat[0].match(line)
if m:
break
flag = flag + 1
if not m:
re_1 = crackline_re_1
if 0 <= skipblocksuntil <= groupcounter:
return
if 'externals' in groupcache[groupcounter]:
for name in groupcache[groupcounter]['externals']:
if name in invbadnames:
name = invbadnames[name]
if 'interfaced' in groupcache[groupcounter] and name in groupcache[groupcounter]['interfaced']:
continue
m1 = re.match(
r'(?P<before>[^"]*)\b%s\b\s*@\(@(?P<args>[^@]*)@\)@.*\Z' % name, markouterparen(line), re.I)
if m1:
m2 = re_1.match(m1.group('before'))
a = _simplifyargs(m1.group('args'))
if m2:
line = 'callfun %s(%s) result (%s)' % (
name, a, m2.group('result'))
else:
line = 'callfun %s(%s)' % (name, a)
m = callfunpattern[0].match(line)
if not m:
outmess(
'crackline: could not resolve function call for line=%s.\n' % repr(line))
return
analyzeline(m, 'callfun', line)
return
if verbose > 1 or (verbose == 1 and currentfilename.lower().endswith('.pyf')):
previous_context = None
outmess('crackline:%d: No pattern for line\n' % (groupcounter))
return
elif pat[1] == 'end':
if 0 <= skipblocksuntil < groupcounter:
groupcounter = groupcounter - 1
if skipblocksuntil <= groupcounter:
return
if groupcounter <= 0:
raise Exception('crackline: groupcounter(=%s) is nonpositive. '
'Check the blocks.'
% (groupcounter))
m1 = beginpattern[0].match(line)
if (m1) and (not m1.group('this') == groupname[groupcounter]):
raise Exception('crackline: End group %s does not match with '
'previous Begin group %s\n\t%s' %
(repr(m1.group('this')), repr(groupname[groupcounter]),
filepositiontext)
)
if skipblocksuntil == groupcounter:
skipblocksuntil = -1
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1
if not skipemptyends:
expectbegin = 1
elif pat[1] == 'begin':
if 0 <= skipblocksuntil <= groupcounter:
groupcounter = groupcounter + 1
return
gotnextfile = 0
analyzeline(m, pat[1], line)
expectbegin = 0
elif pat[1] == 'endif':
pass
elif pat[1] == 'moduleprocedure':
analyzeline(m, pat[1], line)
elif pat[1] == 'contains':
if ignorecontains:
return
if 0 <= skipblocksuntil <= groupcounter:
return
skipblocksuntil = groupcounter
else:
if 0 <= skipblocksuntil <= groupcounter:
return
analyzeline(m, pat[1], line)
def markouterparen(line):
l = ''
f = 0
for c in line:
if c == '(':
f = f + 1
if f == 1:
l = l + '@(@'
continue
elif c == ')':
f = f - 1
if f == 0:
l = l + '@)@'
continue
l = l + c
return l
def markoutercomma(line, comma=','):
l = ''
f = 0
before, after = split_by_unquoted(line, comma + '()')
l += before
while after:
if (after[0] == comma) and (f == 0):
l += '@' + comma + '@'
else:
l += after[0]
if after[0] == '(':
f += 1
elif after[0] == ')':
f -= 1
before, after = split_by_unquoted(after[1:], comma + '()')
l += before
assert not f, repr((f, line, l))
return l
def unmarkouterparen(line):
r = line.replace('@(@', '(').replace('@)@', ')')
return r
def appenddecl(decl, decl2, force=1):
if not decl:
decl = {}
if not decl2:
return decl
if decl is decl2:
return decl
for k in list(decl2.keys()):
if k == 'typespec':
if force or k not in decl:
decl[k] = decl2[k]
elif k == 'attrspec':
for l in decl2[k]:
decl = setattrspec(decl, l, force)
elif k == 'kindselector':
decl = setkindselector(decl, decl2[k], force)
elif k == 'charselector':
decl = setcharselector(decl, decl2[k], force)
elif k in ['=', 'typename']:
if force or k not in decl:
decl[k] = decl2[k]
elif k == 'note':
pass
elif k in ['intent', 'check', 'dimension', 'optional',
'required', 'depend']:
errmess('appenddecl: "%s" not implemented.\n' % k)
else:
raise Exception('appenddecl: Unknown variable definition key: ' +
str(k))
return decl
selectpattern = re.compile(
r'\s*(?P<this>(@\(@.*?@\)@|\*[\d*]+|\*\s*@\(@.*?@\)@|))(?P<after>.*)\Z', re.I)
typedefpattern = re.compile(
r'(?:,(?P<attributes>[\w(),]+))?(::)?(?P<name>\b[a-z$_][\w$]*\b)'
r'(?:\((?P<params>[\w,]*)\))?\Z', re.I)
nameargspattern = re.compile(
r'\s*(?P<name>\b[\w$]+\b)\s*(@\(@\s*(?P<args>[\w\s,]*)\s*@\)@|)\s*((result(\s*@\(@\s*(?P<result>\b[\w$]+\b)\s*@\)@|))|(bind\s*@\(@\s*(?P<bind>(?:(?!@\)@).)*)\s*@\)@))*\s*\Z', re.I)
operatorpattern = re.compile(
r'\s*(?P<scheme>(operator|assignment))'
r'@\(@\s*(?P<name>[^)]+)\s*@\)@\s*\Z', re.I)
callnameargspattern = re.compile(
r'\s*(?P<name>\b[\w$]+\b)\s*@\(@\s*(?P<args>.*)\s*@\)@\s*\Z', re.I)
real16pattern = re.compile(
r'([-+]?(?:\d+(?:\.\d*)?|\d*\.\d+))[dD]((?:[-+]?\d+)?)')
real8pattern = re.compile(
r'([-+]?((?:\d+(?:\.\d*)?|\d*\.\d+))[eE]((?:[-+]?\d+)?)|(\d+\.\d*))')
_intentcallbackpattern = re.compile(r'intent\s*\(.*?\bcallback\b', re.I)
def _is_intent_callback(vdecl):
for a in vdecl.get('attrspec', []):
if _intentcallbackpattern.match(a):
return 1
return 0
def _resolvetypedefpattern(line):
line = ''.join(line.split()) # removes whitespace
m1 = typedefpattern.match(line)
print(line, m1)
if m1:
attrs = m1.group('attributes')
attrs = [a.lower() for a in attrs.split(',')] if attrs else []
return m1.group('name'), attrs, m1.group('params')
return None, [], None
def parse_name_for_bind(line):
pattern = re.compile(r'bind\(\s*(?P<lang>[^,]+)(?:\s*,\s*name\s*=\s*["\'](?P<name>[^"\']+)["\']\s*)?\)', re.I)
match = pattern.search(line)
bind_statement = None
if match:
bind_statement = match.group(0)
# Remove the 'bind' construct from the line.
line = line[:match.start()] + line[match.end():]
return line, bind_statement
def _resolvenameargspattern(line):
line, bind_cname = parse_name_for_bind(line)
line = markouterparen(line)
m1 = nameargspattern.match(line)
if m1:
return m1.group('name'), m1.group('args'), m1.group('result'), bind_cname
m1 = operatorpattern.match(line)
if m1:
name = m1.group('scheme') + '(' + m1.group('name') + ')'
return name, [], None, None
m1 = callnameargspattern.match(line)
if m1:
return m1.group('name'), m1.group('args'), None, None
return None, [], None, None
def analyzeline(m, case, line):
"""
Reads each line in the input file in sequence and updates global vars.
Effectively reads and collects information from the input file to the
global variable groupcache, a dictionary containing info about each part
of the fortran module.
At the end of analyzeline, information is filtered into the correct dict
keys, but parameter values and dimensions are not yet interpreted.
"""
global groupcounter, groupname, groupcache, grouplist, filepositiontext
global currentfilename, f77modulename, neededinterface, neededmodule
global expectbegin, gotnextfile, previous_context
block = m.group('this')
if case != 'multiline':
previous_context = None
if expectbegin and case not in ['begin', 'call', 'callfun', 'type'] \
and not skipemptyends and groupcounter < 1:
newname = os.path.basename(currentfilename).split('.')[0]
outmess(
'analyzeline: no group yet. Creating program group with name "%s".\n' % newname)
gotnextfile = 0
groupcounter = groupcounter + 1
groupname[groupcounter] = 'program'
groupcache[groupcounter] = {}
grouplist[groupcounter] = []
groupcache[groupcounter]['body'] = []
groupcache[groupcounter]['vars'] = {}
groupcache[groupcounter]['block'] = 'program'
groupcache[groupcounter]['name'] = newname
groupcache[groupcounter]['from'] = 'fromsky'
expectbegin = 0
if case in ['begin', 'call', 'callfun']:
# Crack line => block,name,args,result
block = block.lower()
if re.match(r'block\s*data', block, re.I):
block = 'block data'
elif re.match(r'python\s*module', block, re.I):
block = 'python module'
elif re.match(r'abstract\s*interface', block, re.I):
block = 'abstract interface'
if block == 'type':
name, attrs, _ = _resolvetypedefpattern(m.group('after'))
groupcache[groupcounter]['vars'][name] = dict(attrspec = attrs)
args = []
result = None
else:
name, args, result, bindcline = _resolvenameargspattern(m.group('after'))
if name is None:
if block == 'block data':
name = '_BLOCK_DATA_'
else:
name = ''
if block not in ['interface', 'block data', 'abstract interface']:
outmess('analyzeline: No name/args pattern found for line.\n')
previous_context = (block, name, groupcounter)
if args:
args = rmbadname([x.strip()
for x in markoutercomma(args).split('@,@')])
else:
args = []
if '' in args:
while '' in args:
args.remove('')
outmess(
'analyzeline: argument list is malformed (missing argument).\n')
# end of crack line => block,name,args,result
needmodule = 0
needinterface = 0
if case in ['call', 'callfun']:
needinterface = 1
if 'args' not in groupcache[groupcounter]:
return
if name not in groupcache[groupcounter]['args']:
return
for it in grouplist[groupcounter]:
if it['name'] == name:
return
if name in groupcache[groupcounter]['interfaced']:
return
block = {'call': 'subroutine', 'callfun': 'function'}[case]
if f77modulename and neededmodule == -1 and groupcounter <= 1:
neededmodule = groupcounter + 2
needmodule = 1
if block not in ['interface', 'abstract interface']:
needinterface = 1
# Create new block(s)
groupcounter = groupcounter + 1
groupcache[groupcounter] = {}
grouplist[groupcounter] = []
if needmodule:
if verbose > 1:
outmess('analyzeline: Creating module block %s\n' %
repr(f77modulename), 0)
groupname[groupcounter] = 'module'
groupcache[groupcounter]['block'] = 'python module'
groupcache[groupcounter]['name'] = f77modulename
groupcache[groupcounter]['from'] = ''
groupcache[groupcounter]['body'] = []
groupcache[groupcounter]['externals'] = []
groupcache[groupcounter]['interfaced'] = []
groupcache[groupcounter]['vars'] = {}
groupcounter = groupcounter + 1
groupcache[groupcounter] = {}
grouplist[groupcounter] = []
if needinterface:
if verbose > 1:
outmess('analyzeline: Creating additional interface block (groupcounter=%s).\n' % (
groupcounter), 0)
groupname[groupcounter] = 'interface'
groupcache[groupcounter]['block'] = 'interface'
groupcache[groupcounter]['name'] = 'unknown_interface'
groupcache[groupcounter]['from'] = '%s:%s' % (
groupcache[groupcounter - 1]['from'], groupcache[groupcounter - 1]['name'])
groupcache[groupcounter]['body'] = []
groupcache[groupcounter]['externals'] = []
groupcache[groupcounter]['interfaced'] = []
groupcache[groupcounter]['vars'] = {}
groupcounter = groupcounter + 1
groupcache[groupcounter] = {}
grouplist[groupcounter] = []
groupname[groupcounter] = block
groupcache[groupcounter]['block'] = block
if not name:
name = 'unknown_' + block.replace(' ', '_')
groupcache[groupcounter]['prefix'] = m.group('before')
groupcache[groupcounter]['name'] = rmbadname1(name)
groupcache[groupcounter]['result'] = result
if groupcounter == 1:
groupcache[groupcounter]['from'] = currentfilename
else:
if f77modulename and groupcounter == 3:
groupcache[groupcounter]['from'] = '%s:%s' % (
groupcache[groupcounter - 1]['from'], currentfilename)
else:
groupcache[groupcounter]['from'] = '%s:%s' % (
groupcache[groupcounter - 1]['from'], groupcache[groupcounter - 1]['name'])
for k in list(groupcache[groupcounter].keys()):
if not groupcache[groupcounter][k]:
del groupcache[groupcounter][k]
groupcache[groupcounter]['args'] = args
groupcache[groupcounter]['body'] = []
groupcache[groupcounter]['externals'] = []
groupcache[groupcounter]['interfaced'] = []
groupcache[groupcounter]['vars'] = {}
groupcache[groupcounter]['entry'] = {}
# end of creation
if block == 'type':
groupcache[groupcounter]['varnames'] = []
if case in ['call', 'callfun']: # set parents variables
if name not in groupcache[groupcounter - 2]['externals']:
groupcache[groupcounter - 2]['externals'].append(name)
groupcache[groupcounter]['vars'] = copy.deepcopy(
groupcache[groupcounter - 2]['vars'])
try:
del groupcache[groupcounter]['vars'][name][
groupcache[groupcounter]['vars'][name]['attrspec'].index('external')]
except Exception:
pass
if block in ['function', 'subroutine']: # set global attributes
# name is fortran name
if bindcline:
bindcdat = re.search(crackline_bindlang, bindcline)
if bindcdat:
groupcache[groupcounter]['bindlang'] = {name : {}}
groupcache[groupcounter]['bindlang'][name]["lang"] = bindcdat.group('lang')
if bindcdat.group('lang_name'):
groupcache[groupcounter]['bindlang'][name]["name"] = bindcdat.group('lang_name')
try:
groupcache[groupcounter]['vars'][name] = appenddecl(
groupcache[groupcounter]['vars'][name], groupcache[groupcounter - 2]['vars'][''])
except Exception:
pass
if case == 'callfun': # return type
if result and result in groupcache[groupcounter]['vars']:
if not name == result:
groupcache[groupcounter]['vars'][name] = appenddecl(
groupcache[groupcounter]['vars'][name], groupcache[groupcounter]['vars'][result])
# if groupcounter>1: # name is interfaced
try:
groupcache[groupcounter - 2]['interfaced'].append(name)
except Exception:
pass
if block == 'function':
t = typespattern[0].match(m.group('before') + ' ' + name)
if t:
typespec, selector, attr, edecl = cracktypespec0(
t.group('this'), t.group('after'))
updatevars(typespec, selector, attr, edecl)
if case in ['call', 'callfun']:
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1 # end routine
grouplist[groupcounter - 1].append(groupcache[groupcounter])
grouplist[groupcounter - 1][-1]['body'] = grouplist[groupcounter]
del grouplist[groupcounter]
groupcounter = groupcounter - 1 # end interface
elif case == 'entry':
name, args, result, _= _resolvenameargspattern(m.group('after'))
if name is not None:
if args:
args = rmbadname([x.strip()
for x in markoutercomma(args).split('@,@')])
else:
args = []
assert result is None, repr(result)
groupcache[groupcounter]['entry'][name] = args
previous_context = ('entry', name, groupcounter)
elif case == 'type':
typespec, selector, attr, edecl = cracktypespec0(
block, m.group('after'))
last_name = updatevars(typespec, selector, attr, edecl)
if last_name is not None:
previous_context = ('variable', last_name, groupcounter)
elif case in ['dimension', 'intent', 'optional', 'required', 'external', 'public', 'private', 'intrinsic']:
edecl = groupcache[groupcounter]['vars']
ll = m.group('after').strip()
i = ll.find('::')
if i < 0 and case == 'intent':
i = markouterparen(ll).find('@)@') - 2
ll = ll[:i + 1] + '::' + ll[i + 1:]
i = ll.find('::')
if ll[i:] == '::' and 'args' in groupcache[groupcounter]:
outmess('All arguments will have attribute %s%s\n' %
(m.group('this'), ll[:i]))
ll = ll + ','.join(groupcache[groupcounter]['args'])
if i < 0:
i = 0
pl = ''
else:
pl = ll[:i].strip()
ll = ll[i + 2:]
ch = markoutercomma(pl).split('@,@')
if len(ch) > 1:
pl = ch[0]
outmess('analyzeline: cannot handle multiple attributes without type specification. Ignoring %r.\n' % (
','.join(ch[1:])))
last_name = None
for e in [x.strip() for x in markoutercomma(ll).split('@,@')]:
m1 = namepattern.match(e)
if not m1:
if case in ['public', 'private']:
k = ''
else:
print(m.groupdict())
outmess('analyzeline: no name pattern found in %s statement for %s. Skipping.\n' % (
case, repr(e)))
continue
else:
k = rmbadname1(m1.group('name'))
if case in ['public', 'private'] and \
(k == 'operator' or k == 'assignment'):
k += m1.group('after')
if k not in edecl:
edecl[k] = {}
if case == 'dimension':
ap = case + m1.group('after')
if case == 'intent':
ap = m.group('this') + pl
if _intentcallbackpattern.match(ap):
if k not in groupcache[groupcounter]['args']:
if groupcounter > 1:
if '__user__' not in groupcache[groupcounter - 2]['name']:
outmess(
'analyzeline: missing __user__ module (could be nothing)\n')
# fixes ticket 1693
if k != groupcache[groupcounter]['name']:
outmess('analyzeline: appending intent(callback) %s'
' to %s arguments\n' % (k, groupcache[groupcounter]['name']))
groupcache[groupcounter]['args'].append(k)
else:
errmess(
'analyzeline: intent(callback) %s is ignored\n' % (k))
else:
errmess('analyzeline: intent(callback) %s is already'
' in argument list\n' % (k))
if case in ['optional', 'required', 'public', 'external', 'private', 'intrinsic']:
ap = case
if 'attrspec' in edecl[k]:
edecl[k]['attrspec'].append(ap)
else:
edecl[k]['attrspec'] = [ap]
if case == 'external':
if groupcache[groupcounter]['block'] == 'program':
outmess('analyzeline: ignoring program arguments\n')
continue
if k not in groupcache[groupcounter]['args']:
continue
if 'externals' not in groupcache[groupcounter]:
groupcache[groupcounter]['externals'] = []
groupcache[groupcounter]['externals'].append(k)
last_name = k
groupcache[groupcounter]['vars'] = edecl
if last_name is not None:
previous_context = ('variable', last_name, groupcounter)
elif case == 'moduleprocedure':
groupcache[groupcounter]['implementedby'] = \
[x.strip() for x in m.group('after').split(',')]
elif case == 'parameter':
edecl = groupcache[groupcounter]['vars']
ll = m.group('after').strip()[1:-1]
last_name = None
for e in markoutercomma(ll).split('@,@'):
try:
k, initexpr = [x.strip() for x in e.split('=')]
except Exception:
outmess(
'analyzeline: could not extract name,expr in parameter statement "%s" of "%s"\n' % (e, ll))
continue
params = get_parameters(edecl)
k = rmbadname1(k)
if k not in edecl:
edecl[k] = {}
if '=' in edecl[k] and (not edecl[k]['='] == initexpr):
outmess('analyzeline: Overwriting the value of parameter "%s" ("%s") with "%s".\n' % (
k, edecl[k]['='], initexpr))
t = determineexprtype(initexpr, params)
if t:
if t.get('typespec') == 'real':
tt = list(initexpr)
for m in real16pattern.finditer(initexpr):
tt[m.start():m.end()] = list(
initexpr[m.start():m.end()].lower().replace('d', 'e'))
initexpr = ''.join(tt)
elif t.get('typespec') == 'complex':
initexpr = initexpr[1:].lower().replace('d', 'e').\
replace(',', '+1j*(')
try:
v = eval(initexpr, {}, params)
except (SyntaxError, NameError, TypeError) as msg:
errmess('analyzeline: Failed to evaluate %r. Ignoring: %s\n'
% (initexpr, msg))
continue
edecl[k]['='] = repr(v)
if 'attrspec' in edecl[k]:
edecl[k]['attrspec'].append('parameter')
else:
edecl[k]['attrspec'] = ['parameter']
last_name = k
groupcache[groupcounter]['vars'] = edecl
if last_name is not None:
previous_context = ('variable', last_name, groupcounter)
elif case == 'implicit':
if m.group('after').strip().lower() == 'none':
groupcache[groupcounter]['implicit'] = None
elif m.group('after'):
if 'implicit' in groupcache[groupcounter]:
impl = groupcache[groupcounter]['implicit']
else:
impl = {}
if impl is None:
outmess(
'analyzeline: Overwriting earlier "implicit none" statement.\n')
impl = {}
for e in markoutercomma(m.group('after')).split('@,@'):
decl = {}
m1 = re.match(
r'\s*(?P<this>.*?)\s*(\(\s*(?P<after>[a-z-, ]+)\s*\)\s*|)\Z', e, re.I)
if not m1:
outmess(
'analyzeline: could not extract info of implicit statement part "%s"\n' % (e))
continue
m2 = typespattern4implicit.match(m1.group('this'))
if not m2:
outmess(
'analyzeline: could not extract types pattern of implicit statement part "%s"\n' % (e))
continue
typespec, selector, attr, edecl = cracktypespec0(
m2.group('this'), m2.group('after'))
kindselect, charselect, typename = cracktypespec(
typespec, selector)
decl['typespec'] = typespec
decl['kindselector'] = kindselect
decl['charselector'] = charselect
decl['typename'] = typename
for k in list(decl.keys()):
if not decl[k]:
del decl[k]
for r in markoutercomma(m1.group('after')).split('@,@'):
if '-' in r:
try:
begc, endc = [x.strip() for x in r.split('-')]
except Exception:
outmess(
'analyzeline: expected "<char>-<char>" instead of "%s" in range list of implicit statement\n' % r)
continue
else:
begc = endc = r.strip()
if not len(begc) == len(endc) == 1:
outmess(
'analyzeline: expected "<char>-<char>" instead of "%s" in range list of implicit statement (2)\n' % r)
continue
for o in range(ord(begc), ord(endc) + 1):
impl[chr(o)] = decl
groupcache[groupcounter]['implicit'] = impl
elif case == 'data':
ll = []
dl = ''
il = ''
f = 0
fc = 1
inp = 0
for c in m.group('after'):
if not inp:
if c == "'":
fc = not fc
if c == '/' and fc:
f = f + 1
continue
if c == '(':
inp = inp + 1
elif c == ')':
inp = inp - 1
if f == 0:
dl = dl + c
elif f == 1:
il = il + c
elif f == 2:
dl = dl.strip()
if dl.startswith(','):
dl = dl[1:].strip()
ll.append([dl, il])
dl = c
il = ''
f = 0
if f == 2:
dl = dl.strip()
if dl.startswith(','):
dl = dl[1:].strip()
ll.append([dl, il])
vars = groupcache[groupcounter].get('vars', {})
last_name = None
for l in ll:
l[0], l[1] = l[0].strip(), l[1].strip()
if l[0].startswith(','):
l[0] = l[0][1:]
if l[0].startswith('('):
outmess('analyzeline: implied-DO list "%s" is not supported. Skipping.\n' % l[0])
continue
for idx, v in enumerate(rmbadname([x.strip() for x in markoutercomma(l[0]).split('@,@')])):
if v.startswith('('):
outmess('analyzeline: implied-DO list "%s" is not supported. Skipping.\n' % v)
# XXX: subsequent init expressions may get wrong values.
# Ignoring since data statements are irrelevant for
# wrapping.
continue
if '!' in l[1]:
# Fixes gh-24746 pyf generation
# XXX: This essentially ignores the value for generating the pyf which is fine:
# integer dimension(3) :: mytab
# common /mycom/ mytab
# Since in any case it is initialized in the Fortran code
outmess('Comment line in declaration "%s" is not supported. Skipping.\n' % l[1])
continue
vars.setdefault(v, {})
vtype = vars[v].get('typespec')
vdim = getdimension(vars[v])
matches = re.findall(r"\(.*?\)", l[1]) if vtype == 'complex' else l[1].split(',')
try:
new_val = "(/{}/)".format(", ".join(matches)) if vdim else matches[idx]
except IndexError:
# gh-24746
# Runs only if above code fails. Fixes the line
# DATA IVAR1, IVAR2, IVAR3, IVAR4, EVAR5 /4*0,0.0D0/
# by expanding to ['0', '0', '0', '0', '0.0d0']
if any("*" in m for m in matches):
expanded_list = []
for match in matches:
if "*" in match:
try:
multiplier, value = match.split("*")
expanded_list.extend([value.strip()] * int(multiplier))
except ValueError: # if int(multiplier) fails
expanded_list.append(match.strip())
else:
expanded_list.append(match.strip())
matches = expanded_list
new_val = "(/{}/)".format(", ".join(matches)) if vdim else matches[idx]
current_val = vars[v].get('=')
if current_val and (current_val != new_val):
outmess('analyzeline: changing init expression of "%s" ("%s") to "%s"\n' % (v, current_val, new_val))
vars[v]['='] = new_val
last_name = v
groupcache[groupcounter]['vars'] = vars
if last_name:
previous_context = ('variable', last_name, groupcounter)
elif case == 'common':
line = m.group('after').strip()
if not line[0] == '/':
line = '//' + line
cl = []
f = 0
bn = ''
ol = ''
for c in line:
if c == '/':
f = f + 1
continue
if f >= 3:
bn = bn.strip()
if not bn:
bn = '_BLNK_'
cl.append([bn, ol])
f = f - 2
bn = ''
ol = ''
if f % 2:
bn = bn + c
else:
ol = ol + c
bn = bn.strip()
if not bn:
bn = '_BLNK_'
cl.append([bn, ol])
commonkey = {}
if 'common' in groupcache[groupcounter]:
commonkey = groupcache[groupcounter]['common']
for c in cl:
if c[0] not in commonkey:
commonkey[c[0]] = []
for i in [x.strip() for x in markoutercomma(c[1]).split('@,@')]:
if i:
commonkey[c[0]].append(i)
groupcache[groupcounter]['common'] = commonkey
previous_context = ('common', bn, groupcounter)
elif case == 'use':
m1 = re.match(
r'\A\s*(?P<name>\b\w+\b)\s*((,(\s*\bonly\b\s*:|(?P<notonly>))\s*(?P<list>.*))|)\s*\Z', m.group('after'), re.I)
if m1:
mm = m1.groupdict()
if 'use' not in groupcache[groupcounter]:
groupcache[groupcounter]['use'] = {}
name = m1.group('name')
groupcache[groupcounter]['use'][name] = {}
isonly = 0
if 'list' in mm and mm['list'] is not None:
if 'notonly' in mm and mm['notonly'] is None:
isonly = 1
groupcache[groupcounter]['use'][name]['only'] = isonly
ll = [x.strip() for x in mm['list'].split(',')]
rl = {}
for l in ll:
if '=' in l:
m2 = re.match(
r'\A\s*(?P<local>\b\w+\b)\s*=\s*>\s*(?P<use>\b\w+\b)\s*\Z', l, re.I)
if m2:
rl[m2.group('local').strip()] = m2.group(
'use').strip()
else:
outmess(
'analyzeline: Not local=>use pattern found in %s\n' % repr(l))
else:
rl[l] = l
groupcache[groupcounter]['use'][name]['map'] = rl
else:
pass
else:
print(m.groupdict())
outmess('analyzeline: Could not crack the use statement.\n')
elif case in ['f2pyenhancements']:
if 'f2pyenhancements' not in groupcache[groupcounter]:
groupcache[groupcounter]['f2pyenhancements'] = {}
d = groupcache[groupcounter]['f2pyenhancements']
if m.group('this') == 'usercode' and 'usercode' in d:
if isinstance(d['usercode'], str):
d['usercode'] = [d['usercode']]
d['usercode'].append(m.group('after'))
else:
d[m.group('this')] = m.group('after')
elif case == 'multiline':
if previous_context is None:
if verbose:
outmess('analyzeline: No context for multiline block.\n')
return
gc = groupcounter
appendmultiline(groupcache[gc],
previous_context[:2],
m.group('this'))
else:
if verbose > 1:
print(m.groupdict())
outmess('analyzeline: No code implemented for line.\n')
def appendmultiline(group, context_name, ml):
if 'f2pymultilines' not in group:
group['f2pymultilines'] = {}
d = group['f2pymultilines']
if context_name not in d:
d[context_name] = []
d[context_name].append(ml)
return
def cracktypespec0(typespec, ll):
selector = None
attr = None
if re.match(r'double\s*complex', typespec, re.I):
typespec = 'double complex'
elif re.match(r'double\s*precision', typespec, re.I):
typespec = 'double precision'
else:
typespec = typespec.strip().lower()
m1 = selectpattern.match(markouterparen(ll))
if not m1:
outmess(
'cracktypespec0: no kind/char_selector pattern found for line.\n')
return
d = m1.groupdict()
for k in list(d.keys()):
d[k] = unmarkouterparen(d[k])
if typespec in ['complex', 'integer', 'logical', 'real', 'character', 'type']:
selector = d['this']
ll = d['after']
i = ll.find('::')
if i >= 0:
attr = ll[:i].strip()
ll = ll[i + 2:]
return typespec, selector, attr, ll
#####
namepattern = re.compile(r'\s*(?P<name>\b\w+\b)\s*(?P<after>.*)\s*\Z', re.I)
kindselector = re.compile(
r'\s*(\(\s*(kind\s*=)?\s*(?P<kind>.*)\s*\)|\*\s*(?P<kind2>.*?))\s*\Z', re.I)
charselector = re.compile(
r'\s*(\((?P<lenkind>.*)\)|\*\s*(?P<charlen>.*))\s*\Z', re.I)
lenkindpattern = re.compile(
r'\s*(kind\s*=\s*(?P<kind>.*?)\s*(@,@\s*len\s*=\s*(?P<len>.*)|)'
r'|(len\s*=\s*|)(?P<len2>.*?)\s*(@,@\s*(kind\s*=\s*|)(?P<kind2>.*)'
r'|(f2py_len\s*=\s*(?P<f2py_len>.*))|))\s*\Z', re.I)
lenarraypattern = re.compile(
r'\s*(@\(@\s*(?!/)\s*(?P<array>.*?)\s*@\)@\s*\*\s*(?P<len>.*?)|(\*\s*(?P<len2>.*?)|)\s*(@\(@\s*(?!/)\s*(?P<array2>.*?)\s*@\)@|))\s*(=\s*(?P<init>.*?)|(@\(@|)/\s*(?P<init2>.*?)\s*/(@\)@|)|)\s*\Z', re.I)
def removespaces(expr):
expr = expr.strip()
if len(expr) <= 1:
return expr
expr2 = expr[0]
for i in range(1, len(expr) - 1):
if (expr[i] == ' ' and
((expr[i + 1] in "()[]{}=+-/* ") or
(expr[i - 1] in "()[]{}=+-/* "))):
continue
expr2 = expr2 + expr[i]
expr2 = expr2 + expr[-1]
return expr2
def markinnerspaces(line):
"""
The function replace all spaces in the input variable line which are
surrounded with quotation marks, with the triplet "@_@".
For instance, for the input "a 'b c'" the function returns "a 'b@_@c'"
Parameters
----------
line : str
Returns
-------
str
"""
fragment = ''
inside = False
current_quote = None
escaped = ''
for c in line:
if escaped == '\\' and c in ['\\', '\'', '"']:
fragment += c
escaped = c
continue
if not inside and c in ['\'', '"']:
current_quote = c
if c == current_quote:
inside = not inside
elif c == ' ' and inside:
fragment += '@_@'
continue
fragment += c
escaped = c # reset to non-backslash
return fragment
def updatevars(typespec, selector, attrspec, entitydecl):
"""
Returns last_name, the variable name without special chars, parenthesis
or dimension specifiers.
Alters groupcache to add the name, typespec, attrspec (and possibly value)
of current variable.
"""
global groupcache, groupcounter
last_name = None
kindselect, charselect, typename = cracktypespec(typespec, selector)
# Clean up outer commas, whitespace and undesired chars from attrspec
if attrspec:
attrspec = [x.strip() for x in markoutercomma(attrspec).split('@,@')]
l = []
c = re.compile(r'(?P<start>[a-zA-Z]+)')
for a in attrspec:
if not a:
continue
m = c.match(a)
if m:
s = m.group('start').lower()
a = s + a[len(s):]
l.append(a)
attrspec = l
el = [x.strip() for x in markoutercomma(entitydecl).split('@,@')]
el1 = []
for e in el:
for e1 in [x.strip() for x in markoutercomma(removespaces(markinnerspaces(e)), comma=' ').split('@ @')]:
if e1:
el1.append(e1.replace('@_@', ' '))
for e in el1:
m = namepattern.match(e)
if not m:
outmess(
'updatevars: no name pattern found for entity=%s. Skipping.\n' % (repr(e)))
continue
ename = rmbadname1(m.group('name'))
edecl = {}
if ename in groupcache[groupcounter]['vars']:
edecl = groupcache[groupcounter]['vars'][ename].copy()
not_has_typespec = 'typespec' not in edecl
if not_has_typespec:
edecl['typespec'] = typespec
elif typespec and (not typespec == edecl['typespec']):
outmess('updatevars: attempt to change the type of "%s" ("%s") to "%s". Ignoring.\n' % (
ename, edecl['typespec'], typespec))
if 'kindselector' not in edecl:
edecl['kindselector'] = copy.copy(kindselect)
elif kindselect:
for k in list(kindselect.keys()):
if k in edecl['kindselector'] and (not kindselect[k] == edecl['kindselector'][k]):
outmess('updatevars: attempt to change the kindselector "%s" of "%s" ("%s") to "%s". Ignoring.\n' % (
k, ename, edecl['kindselector'][k], kindselect[k]))
else:
edecl['kindselector'][k] = copy.copy(kindselect[k])
if 'charselector' not in edecl and charselect:
if not_has_typespec:
edecl['charselector'] = charselect
else:
errmess('updatevars:%s: attempt to change empty charselector to %r. Ignoring.\n'
% (ename, charselect))
elif charselect:
for k in list(charselect.keys()):
if k in edecl['charselector'] and (not charselect[k] == edecl['charselector'][k]):
outmess('updatevars: attempt to change the charselector "%s" of "%s" ("%s") to "%s". Ignoring.\n' % (
k, ename, edecl['charselector'][k], charselect[k]))
else:
edecl['charselector'][k] = copy.copy(charselect[k])
if 'typename' not in edecl:
edecl['typename'] = typename
elif typename and (not edecl['typename'] == typename):
outmess('updatevars: attempt to change the typename of "%s" ("%s") to "%s". Ignoring.\n' % (
ename, edecl['typename'], typename))
if 'attrspec' not in edecl:
edecl['attrspec'] = copy.copy(attrspec)
elif attrspec:
for a in attrspec:
if a not in edecl['attrspec']:
edecl['attrspec'].append(a)
else:
edecl['typespec'] = copy.copy(typespec)
edecl['kindselector'] = copy.copy(kindselect)
edecl['charselector'] = copy.copy(charselect)
edecl['typename'] = typename
edecl['attrspec'] = copy.copy(attrspec)
if 'external' in (edecl.get('attrspec') or []) and e in groupcache[groupcounter]['args']:
if 'externals' not in groupcache[groupcounter]:
groupcache[groupcounter]['externals'] = []
groupcache[groupcounter]['externals'].append(e)
if m.group('after'):
m1 = lenarraypattern.match(markouterparen(m.group('after')))
if m1:
d1 = m1.groupdict()
for lk in ['len', 'array', 'init']:
if d1[lk + '2'] is not None:
d1[lk] = d1[lk + '2']
del d1[lk + '2']
for k in list(d1.keys()):
if d1[k] is not None:
d1[k] = unmarkouterparen(d1[k])
else:
del d1[k]
if 'len' in d1 and 'array' in d1:
if d1['len'] == '':
d1['len'] = d1['array']
del d1['array']
elif typespec == 'character':
if ('charselector' not in edecl) or (not edecl['charselector']):
edecl['charselector'] = {}
if 'len' in edecl['charselector']:
del edecl['charselector']['len']
edecl['charselector']['*'] = d1['len']
del d1['len']
else:
d1['array'] = d1['array'] + ',' + d1['len']
del d1['len']
errmess('updatevars: "%s %s" is mapped to "%s %s(%s)"\n' % (
typespec, e, typespec, ename, d1['array']))
if 'len' in d1:
if typespec in ['complex', 'integer', 'logical', 'real']:
if ('kindselector' not in edecl) or (not edecl['kindselector']):
edecl['kindselector'] = {}
edecl['kindselector']['*'] = d1['len']
del d1['len']
elif typespec == 'character':
if ('charselector' not in edecl) or (not edecl['charselector']):
edecl['charselector'] = {}
if 'len' in edecl['charselector']:
del edecl['charselector']['len']
edecl['charselector']['*'] = d1['len']
del d1['len']
if 'init' in d1:
if '=' in edecl and (not edecl['='] == d1['init']):
outmess('updatevars: attempt to change the init expression of "%s" ("%s") to "%s". Ignoring.\n' % (
ename, edecl['='], d1['init']))
else:
edecl['='] = d1['init']
if 'array' in d1:
dm = 'dimension(%s)' % d1['array']
if 'attrspec' not in edecl or (not edecl['attrspec']):
edecl['attrspec'] = [dm]
else:
edecl['attrspec'].append(dm)
for dm1 in edecl['attrspec']:
if dm1[:9] == 'dimension' and dm1 != dm:
del edecl['attrspec'][-1]
errmess('updatevars:%s: attempt to change %r to %r. Ignoring.\n'
% (ename, dm1, dm))
break
else:
outmess('updatevars: could not crack entity declaration "%s". Ignoring.\n' % (
ename + m.group('after')))
for k in list(edecl.keys()):
if not edecl[k]:
del edecl[k]
groupcache[groupcounter]['vars'][ename] = edecl
if 'varnames' in groupcache[groupcounter]:
groupcache[groupcounter]['varnames'].append(ename)
last_name = ename
return last_name
def cracktypespec(typespec, selector):
kindselect = None
charselect = None
typename = None
if selector:
if typespec in ['complex', 'integer', 'logical', 'real']:
kindselect = kindselector.match(selector)
if not kindselect:
outmess(
'cracktypespec: no kindselector pattern found for %s\n' % (repr(selector)))
return
kindselect = kindselect.groupdict()
kindselect['*'] = kindselect['kind2']
del kindselect['kind2']
for k in list(kindselect.keys()):
if not kindselect[k]:
del kindselect[k]
for k, i in list(kindselect.items()):
kindselect[k] = rmbadname1(i)
elif typespec == 'character':
charselect = charselector.match(selector)
if not charselect:
outmess(
'cracktypespec: no charselector pattern found for %s\n' % (repr(selector)))
return
charselect = charselect.groupdict()
charselect['*'] = charselect['charlen']
del charselect['charlen']
if charselect['lenkind']:
lenkind = lenkindpattern.match(
markoutercomma(charselect['lenkind']))
lenkind = lenkind.groupdict()
for lk in ['len', 'kind']:
if lenkind[lk + '2']:
lenkind[lk] = lenkind[lk + '2']
charselect[lk] = lenkind[lk]
del lenkind[lk + '2']
if lenkind['f2py_len'] is not None:
# used to specify the length of assumed length strings
charselect['f2py_len'] = lenkind['f2py_len']
del charselect['lenkind']
for k in list(charselect.keys()):
if not charselect[k]:
del charselect[k]
for k, i in list(charselect.items()):
charselect[k] = rmbadname1(i)
elif typespec == 'type':
typename = re.match(r'\s*\(\s*(?P<name>\w+)\s*\)', selector, re.I)
if typename:
typename = typename.group('name')
else:
outmess('cracktypespec: no typename found in %s\n' %
(repr(typespec + selector)))
else:
outmess('cracktypespec: no selector used for %s\n' %
(repr(selector)))
return kindselect, charselect, typename
######
def setattrspec(decl, attr, force=0):
if not decl:
decl = {}
if not attr:
return decl
if 'attrspec' not in decl:
decl['attrspec'] = [attr]
return decl
if force:
decl['attrspec'].append(attr)
if attr in decl['attrspec']:
return decl
if attr == 'static' and 'automatic' not in decl['attrspec']:
decl['attrspec'].append(attr)
elif attr == 'automatic' and 'static' not in decl['attrspec']:
decl['attrspec'].append(attr)
elif attr == 'public':
if 'private' not in decl['attrspec']:
decl['attrspec'].append(attr)
elif attr == 'private':
if 'public' not in decl['attrspec']:
decl['attrspec'].append(attr)
else:
decl['attrspec'].append(attr)
return decl
def setkindselector(decl, sel, force=0):
if not decl:
decl = {}
if not sel:
return decl
if 'kindselector' not in decl:
decl['kindselector'] = sel
return decl
for k in list(sel.keys()):
if force or k not in decl['kindselector']:
decl['kindselector'][k] = sel[k]
return decl
def setcharselector(decl, sel, force=0):
if not decl:
decl = {}
if not sel:
return decl
if 'charselector' not in decl:
decl['charselector'] = sel
return decl
for k in list(sel.keys()):
if force or k not in decl['charselector']:
decl['charselector'][k] = sel[k]
return decl
def getblockname(block, unknown='unknown'):
if 'name' in block:
return block['name']
return unknown
# post processing
def setmesstext(block):
global filepositiontext
try:
filepositiontext = 'In: %s:%s\n' % (block['from'], block['name'])
except Exception:
pass
def get_usedict(block):
usedict = {}
if 'parent_block' in block:
usedict = get_usedict(block['parent_block'])
if 'use' in block:
usedict.update(block['use'])
return usedict
def get_useparameters(block, param_map=None):
global f90modulevars
if param_map is None:
param_map = {}
usedict = get_usedict(block)
if not usedict:
return param_map
for usename, mapping in list(usedict.items()):
usename = usename.lower()
if usename not in f90modulevars:
outmess('get_useparameters: no module %s info used by %s\n' %
(usename, block.get('name')))
continue
mvars = f90modulevars[usename]
params = get_parameters(mvars)
if not params:
continue
# XXX: apply mapping
if mapping:
errmess('get_useparameters: mapping for %s not impl.\n' % (mapping))
for k, v in list(params.items()):
if k in param_map:
outmess('get_useparameters: overriding parameter %s with'
' value from module %s\n' % (repr(k), repr(usename)))
param_map[k] = v
return param_map
def postcrack2(block, tab='', param_map=None):
global f90modulevars
if not f90modulevars:
return block
if isinstance(block, list):
ret = [postcrack2(g, tab=tab + '\t', param_map=param_map)
for g in block]
return ret
setmesstext(block)
outmess('%sBlock: %s\n' % (tab, block['name']), 0)
if param_map is None:
param_map = get_useparameters(block)
if param_map is not None and 'vars' in block:
vars = block['vars']
for n in list(vars.keys()):
var = vars[n]
if 'kindselector' in var:
kind = var['kindselector']
if 'kind' in kind:
val = kind['kind']
if val in param_map:
kind['kind'] = param_map[val]
new_body = [postcrack2(b, tab=tab + '\t', param_map=param_map)
for b in block['body']]
block['body'] = new_body
return block
def postcrack(block, args=None, tab=''):
"""
TODO:
function return values
determine expression types if in argument list
"""
global usermodules, onlyfunctions
if isinstance(block, list):
gret = []
uret = []
for g in block:
setmesstext(g)
g = postcrack(g, tab=tab + '\t')
# sort user routines to appear first
if 'name' in g and '__user__' in g['name']:
uret.append(g)
else:
gret.append(g)
return uret + gret
setmesstext(block)
if not isinstance(block, dict) and 'block' not in block:
raise Exception('postcrack: Expected block dictionary instead of ' +
str(block))
if 'name' in block and not block['name'] == 'unknown_interface':
outmess('%sBlock: %s\n' % (tab, block['name']), 0)
block = analyzeargs(block)
block = analyzecommon(block)
block['vars'] = analyzevars(block)
block['sortvars'] = sortvarnames(block['vars'])
if block.get('args'):
args = block['args']
block['body'] = analyzebody(block, args, tab=tab)
userisdefined = []
if 'use' in block:
useblock = block['use']
for k in list(useblock.keys()):
if '__user__' in k:
userisdefined.append(k)
else:
useblock = {}
name = ''
if 'name' in block:
name = block['name']
# and not userisdefined: # Build a __user__ module
if block.get('externals'):
interfaced = []
if 'interfaced' in block:
interfaced = block['interfaced']
mvars = copy.copy(block['vars'])
if name:
mname = name + '__user__routines'
else:
mname = 'unknown__user__routines'
if mname in userisdefined:
i = 1
while '%s_%i' % (mname, i) in userisdefined:
i = i + 1
mname = '%s_%i' % (mname, i)
interface = {'block': 'interface', 'body': [],
'vars': {}, 'name': name + '_user_interface'}
for e in block['externals']:
if e in interfaced:
edef = []
j = -1
for b in block['body']:
j = j + 1
if b['block'] == 'interface':
i = -1
for bb in b['body']:
i = i + 1
if 'name' in bb and bb['name'] == e:
edef = copy.copy(bb)
del b['body'][i]
break
if edef:
if not b['body']:
del block['body'][j]
del interfaced[interfaced.index(e)]
break
interface['body'].append(edef)
else:
if e in mvars and not isexternal(mvars[e]):
interface['vars'][e] = mvars[e]
if interface['vars'] or interface['body']:
block['interfaced'] = interfaced
mblock = {'block': 'python module', 'body': [
interface], 'vars': {}, 'name': mname, 'interfaced': block['externals']}
useblock[mname] = {}
usermodules.append(mblock)
if useblock:
block['use'] = useblock
return block
def sortvarnames(vars):
indep = []
dep = []
for v in list(vars.keys()):
if 'depend' in vars[v] and vars[v]['depend']:
dep.append(v)
else:
indep.append(v)
n = len(dep)
i = 0
while dep: # XXX: How to catch dependence cycles correctly?
v = dep[0]
fl = 0
for w in dep[1:]:
if w in vars[v]['depend']:
fl = 1
break
if fl:
dep = dep[1:] + [v]
i = i + 1
if i > n:
errmess('sortvarnames: failed to compute dependencies because'
' of cyclic dependencies between '
+ ', '.join(dep) + '\n')
indep = indep + dep
break
else:
indep.append(v)
dep = dep[1:]
n = len(dep)
i = 0
return indep
def analyzecommon(block):
if not hascommon(block):
return block
commonvars = []
for k in list(block['common'].keys()):
comvars = []
for e in block['common'][k]:
m = re.match(
r'\A\s*\b(?P<name>.*?)\b\s*(\((?P<dims>.*?)\)|)\s*\Z', e, re.I)
if m:
dims = []
if m.group('dims'):
dims = [x.strip()
for x in markoutercomma(m.group('dims')).split('@,@')]
n = rmbadname1(m.group('name').strip())
if n in block['vars']:
if 'attrspec' in block['vars'][n]:
block['vars'][n]['attrspec'].append(
'dimension(%s)' % (','.join(dims)))
else:
block['vars'][n]['attrspec'] = [
'dimension(%s)' % (','.join(dims))]
else:
if dims:
block['vars'][n] = {
'attrspec': ['dimension(%s)' % (','.join(dims))]}
else:
block['vars'][n] = {}
if n not in commonvars:
commonvars.append(n)
else:
n = e
errmess(
'analyzecommon: failed to extract "<name>[(<dims>)]" from "%s" in common /%s/.\n' % (e, k))
comvars.append(n)
block['common'][k] = comvars
if 'commonvars' not in block:
block['commonvars'] = commonvars
else:
block['commonvars'] = block['commonvars'] + commonvars
return block
def analyzebody(block, args, tab=''):
global usermodules, skipfuncs, onlyfuncs, f90modulevars
setmesstext(block)
maybe_private = {
key: value
for key, value in block['vars'].items()
if 'attrspec' not in value or 'public' not in value['attrspec']
}
body = []
for b in block['body']:
b['parent_block'] = block
if b['block'] in ['function', 'subroutine']:
if args is not None and b['name'] not in args:
continue
else:
as_ = b['args']
# Add private members to skipfuncs for gh-23879
if b['name'] in maybe_private.keys():
skipfuncs.append(b['name'])
if b['name'] in skipfuncs:
continue
if onlyfuncs and b['name'] not in onlyfuncs:
continue
b['saved_interface'] = crack2fortrangen(
b, '\n' + ' ' * 6, as_interface=True)
else:
as_ = args
b = postcrack(b, as_, tab=tab + '\t')
if b['block'] in ['interface', 'abstract interface'] and \
not b['body'] and not b.get('implementedby'):
if 'f2pyenhancements' not in b:
continue
if b['block'].replace(' ', '') == 'pythonmodule':
usermodules.append(b)
else:
if b['block'] == 'module':
f90modulevars[b['name']] = b['vars']
body.append(b)
return body
def buildimplicitrules(block):
setmesstext(block)
implicitrules = defaultimplicitrules
attrrules = {}
if 'implicit' in block:
if block['implicit'] is None:
implicitrules = None
if verbose > 1:
outmess(
'buildimplicitrules: no implicit rules for routine %s.\n' % repr(block['name']))
else:
for k in list(block['implicit'].keys()):
if block['implicit'][k].get('typespec') not in ['static', 'automatic']:
implicitrules[k] = block['implicit'][k]
else:
attrrules[k] = block['implicit'][k]['typespec']
return implicitrules, attrrules
def myeval(e, g=None, l=None):
""" Like `eval` but returns only integers and floats """
r = eval(e, g, l)
if type(r) in [int, float]:
return r
raise ValueError('r=%r' % (r))
getlincoef_re_1 = re.compile(r'\A\b\w+\b\Z', re.I)
def getlincoef(e, xset): # e = a*x+b ; x in xset
"""
Obtain ``a`` and ``b`` when ``e == "a*x+b"``, where ``x`` is a symbol in
xset.
>>> getlincoef('2*x + 1', {'x'})
(2, 1, 'x')
>>> getlincoef('3*x + x*2 + 2 + 1', {'x'})
(5, 3, 'x')
>>> getlincoef('0', {'x'})
(0, 0, None)
>>> getlincoef('0*x', {'x'})
(0, 0, 'x')
>>> getlincoef('x*x', {'x'})
(None, None, None)
This can be tricked by sufficiently complex expressions
>>> getlincoef('(x - 0.5)*(x - 1.5)*(x - 1)*x + 2*x + 3', {'x'})
(2.0, 3.0, 'x')
"""
try:
c = int(myeval(e, {}, {}))
return 0, c, None
except Exception:
pass
if getlincoef_re_1.match(e):
return 1, 0, e
len_e = len(e)
for x in xset:
if len(x) > len_e:
continue
if re.search(r'\w\s*\([^)]*\b' + x + r'\b', e):
# skip function calls having x as an argument, e.g max(1, x)
continue
re_1 = re.compile(r'(?P<before>.*?)\b' + x + r'\b(?P<after>.*)', re.I)
m = re_1.match(e)
if m:
try:
m1 = re_1.match(e)
while m1:
ee = '%s(%s)%s' % (
m1.group('before'), 0, m1.group('after'))
m1 = re_1.match(ee)
b = myeval(ee, {}, {})
m1 = re_1.match(e)
while m1:
ee = '%s(%s)%s' % (
m1.group('before'), 1, m1.group('after'))
m1 = re_1.match(ee)
a = myeval(ee, {}, {}) - b
m1 = re_1.match(e)
while m1:
ee = '%s(%s)%s' % (
m1.group('before'), 0.5, m1.group('after'))
m1 = re_1.match(ee)
c = myeval(ee, {}, {})
# computing another point to be sure that expression is linear
m1 = re_1.match(e)
while m1:
ee = '%s(%s)%s' % (
m1.group('before'), 1.5, m1.group('after'))
m1 = re_1.match(ee)
c2 = myeval(ee, {}, {})
if (a * 0.5 + b == c and a * 1.5 + b == c2):
return a, b, x
except Exception:
pass
break
return None, None, None
word_pattern = re.compile(r'\b[a-z][\w$]*\b', re.I)
def _get_depend_dict(name, vars, deps):
if name in vars:
words = vars[name].get('depend', [])
if '=' in vars[name] and not isstring(vars[name]):
for word in word_pattern.findall(vars[name]['=']):
# The word_pattern may return values that are not
# only variables, they can be string content for instance
if word not in words and word in vars and word != name:
words.append(word)
for word in words[:]:
for w in deps.get(word, []) \
or _get_depend_dict(word, vars, deps):
if w not in words:
words.append(w)
else:
outmess('_get_depend_dict: no dependence info for %s\n' % (repr(name)))
words = []
deps[name] = words
return words
def _calc_depend_dict(vars):
names = list(vars.keys())
depend_dict = {}
for n in names:
_get_depend_dict(n, vars, depend_dict)
return depend_dict
def get_sorted_names(vars):
depend_dict = _calc_depend_dict(vars)
names = []
for name in list(depend_dict.keys()):
if not depend_dict[name]:
names.append(name)
del depend_dict[name]
while depend_dict:
for name, lst in list(depend_dict.items()):
new_lst = [n for n in lst if n in depend_dict]
if not new_lst:
names.append(name)
del depend_dict[name]
else:
depend_dict[name] = new_lst
return [name for name in names if name in vars]
def _kind_func(string):
# XXX: return something sensible.
if string[0] in "'\"":
string = string[1:-1]
if real16pattern.match(string):
return 8
elif real8pattern.match(string):
return 4
return 'kind(' + string + ')'
def _selected_int_kind_func(r):
# XXX: This should be processor dependent
m = 10 ** r
if m <= 2 ** 8:
return 1
if m <= 2 ** 16:
return 2
if m <= 2 ** 32:
return 4
if m <= 2 ** 63:
return 8
if m <= 2 ** 128:
return 16
return -1
def _selected_real_kind_func(p, r=0, radix=0):
# XXX: This should be processor dependent
# This is only verified for 0 <= p <= 20, possibly good for p <= 33 and above
if p < 7:
return 4
if p < 16:
return 8
machine = platform.machine().lower()
if machine.startswith(('aarch64', 'alpha', 'arm64', 'loongarch', 'mips', 'power', 'ppc', 'riscv', 's390x', 'sparc')):
if p <= 33:
return 16
else:
if p < 19:
return 10
elif p <= 33:
return 16
return -1
def get_parameters(vars, global_params={}):
params = copy.copy(global_params)
g_params = copy.copy(global_params)
for name, func in [('kind', _kind_func),
('selected_int_kind', _selected_int_kind_func),
('selected_real_kind', _selected_real_kind_func), ]:
if name not in g_params:
g_params[name] = func
param_names = []
for n in get_sorted_names(vars):
if 'attrspec' in vars[n] and 'parameter' in vars[n]['attrspec']:
param_names.append(n)
kind_re = re.compile(r'\bkind\s*\(\s*(?P<value>.*)\s*\)', re.I)
selected_int_kind_re = re.compile(
r'\bselected_int_kind\s*\(\s*(?P<value>.*)\s*\)', re.I)
selected_kind_re = re.compile(
r'\bselected_(int|real)_kind\s*\(\s*(?P<value>.*)\s*\)', re.I)
for n in param_names:
if '=' in vars[n]:
v = vars[n]['=']
if islogical(vars[n]):
v = v.lower()
for repl in [
('.false.', 'False'),
('.true.', 'True'),
# TODO: test .eq., .neq., etc replacements.
]:
v = v.replace(*repl)
v = kind_re.sub(r'kind("\1")', v)
v = selected_int_kind_re.sub(r'selected_int_kind(\1)', v)
# We need to act according to the data.
# The easy case is if the data has a kind-specifier,
# then we may easily remove those specifiers.
# However, it may be that the user uses other specifiers...(!)
is_replaced = False
if 'kindselector' in vars[n]:
# Remove kind specifier (including those defined
# by parameters)
if 'kind' in vars[n]['kindselector']:
orig_v_len = len(v)
v = v.replace('_' + vars[n]['kindselector']['kind'], '')
# Again, this will be true if even a single specifier
# has been replaced, see comment above.
is_replaced = len(v) < orig_v_len
if not is_replaced:
if not selected_kind_re.match(v):
v_ = v.split('_')
# In case there are additive parameters
if len(v_) > 1:
v = ''.join(v_[:-1]).lower().replace(v_[-1].lower(), '')
# Currently this will not work for complex numbers.
# There is missing code for extracting a complex number,
# which may be defined in either of these:
# a) (Re, Im)
# b) cmplx(Re, Im)
# c) dcmplx(Re, Im)
# d) cmplx(Re, Im, <prec>)
if isdouble(vars[n]):
tt = list(v)
for m in real16pattern.finditer(v):
tt[m.start():m.end()] = list(
v[m.start():m.end()].lower().replace('d', 'e'))
v = ''.join(tt)
elif iscomplex(vars[n]):
outmess(f'get_parameters[TODO]: '
f'implement evaluation of complex expression {v}\n')
dimspec = ([s.removeprefix('dimension').strip()
for s in vars[n]['attrspec']
if s.startswith('dimension')] or [None])[0]
# Handle _dp for gh-6624
# Also fixes gh-20460
if real16pattern.search(v):
v = 8
elif real8pattern.search(v):
v = 4
try:
params[n] = param_eval(v, g_params, params, dimspec=dimspec)
except Exception as msg:
params[n] = v
outmess(f'get_parameters: got "{msg}" on {n!r}\n')
if isstring(vars[n]) and isinstance(params[n], int):
params[n] = chr(params[n])
nl = n.lower()
if nl != n:
params[nl] = params[n]
else:
print(vars[n])
outmess(f'get_parameters:parameter {n!r} does not have value?!\n')
return params
def _eval_length(length, params):
if length in ['(:)', '(*)', '*']:
return '(*)'
return _eval_scalar(length, params)
_is_kind_number = re.compile(r'\d+_').match
def _eval_scalar(value, params):
if _is_kind_number(value):
value = value.split('_')[0]
try:
# TODO: use symbolic from PR #19805
value = eval(value, {}, params)
value = (repr if isinstance(value, str) else str)(value)
except (NameError, SyntaxError, TypeError):
return value
except Exception as msg:
errmess('"%s" in evaluating %r '
'(available names: %s)\n'
% (msg, value, list(params.keys())))
return value
def analyzevars(block):
"""
Sets correct dimension information for each variable/parameter
"""
global f90modulevars
setmesstext(block)
implicitrules, attrrules = buildimplicitrules(block)
vars = copy.copy(block['vars'])
if block['block'] == 'function' and block['name'] not in vars:
vars[block['name']] = {}
if '' in block['vars']:
del vars['']
if 'attrspec' in block['vars']['']:
gen = block['vars']['']['attrspec']
for n in set(vars) | set(b['name'] for b in block['body']):
for k in ['public', 'private']:
if k in gen:
vars[n] = setattrspec(vars.get(n, {}), k)
svars = []
args = block['args']
for a in args:
try:
vars[a]
svars.append(a)
except KeyError:
pass
for n in list(vars.keys()):
if n not in args:
svars.append(n)
params = get_parameters(vars, get_useparameters(block))
# At this point, params are read and interpreted, but
# the params used to define vars are not yet parsed
dep_matches = {}
name_match = re.compile(r'[A-Za-z][\w$]*').match
for v in list(vars.keys()):
m = name_match(v)
if m:
n = v[m.start():m.end()]
try:
dep_matches[n]
except KeyError:
dep_matches[n] = re.compile(r'.*\b%s\b' % (v), re.I).match
for n in svars:
if n[0] in list(attrrules.keys()):
vars[n] = setattrspec(vars[n], attrrules[n[0]])
if 'typespec' not in vars[n]:
if not('attrspec' in vars[n] and 'external' in vars[n]['attrspec']):
if implicitrules:
ln0 = n[0].lower()
for k in list(implicitrules[ln0].keys()):
if k == 'typespec' and implicitrules[ln0][k] == 'undefined':
continue
if k not in vars[n]:
vars[n][k] = implicitrules[ln0][k]
elif k == 'attrspec':
for l in implicitrules[ln0][k]:
vars[n] = setattrspec(vars[n], l)
elif n in block['args']:
outmess('analyzevars: typespec of variable %s is not defined in routine %s.\n' % (
repr(n), block['name']))
if 'charselector' in vars[n]:
if 'len' in vars[n]['charselector']:
l = vars[n]['charselector']['len']
try:
l = str(eval(l, {}, params))
except Exception:
pass
vars[n]['charselector']['len'] = l
if 'kindselector' in vars[n]:
if 'kind' in vars[n]['kindselector']:
l = vars[n]['kindselector']['kind']
try:
l = str(eval(l, {}, params))
except Exception:
pass
vars[n]['kindselector']['kind'] = l
dimension_exprs = {}
if 'attrspec' in vars[n]:
attr = vars[n]['attrspec']
attr.reverse()
vars[n]['attrspec'] = []
dim, intent, depend, check, note = None, None, None, None, None
for a in attr:
if a[:9] == 'dimension':
dim = (a[9:].strip())[1:-1]
elif a[:6] == 'intent':
intent = (a[6:].strip())[1:-1]
elif a[:6] == 'depend':
depend = (a[6:].strip())[1:-1]
elif a[:5] == 'check':
check = (a[5:].strip())[1:-1]
elif a[:4] == 'note':
note = (a[4:].strip())[1:-1]
else:
vars[n] = setattrspec(vars[n], a)
if intent:
if 'intent' not in vars[n]:
vars[n]['intent'] = []
for c in [x.strip() for x in markoutercomma(intent).split('@,@')]:
# Remove spaces so that 'in out' becomes 'inout'
tmp = c.replace(' ', '')
if tmp not in vars[n]['intent']:
vars[n]['intent'].append(tmp)
intent = None
if note:
note = note.replace('\\n\\n', '\n\n')
note = note.replace('\\n ', '\n')
if 'note' not in vars[n]:
vars[n]['note'] = [note]
else:
vars[n]['note'].append(note)
note = None
if depend is not None:
if 'depend' not in vars[n]:
vars[n]['depend'] = []
for c in rmbadname([x.strip() for x in markoutercomma(depend).split('@,@')]):
if c not in vars[n]['depend']:
vars[n]['depend'].append(c)
depend = None
if check is not None:
if 'check' not in vars[n]:
vars[n]['check'] = []
for c in [x.strip() for x in markoutercomma(check).split('@,@')]:
if c not in vars[n]['check']:
vars[n]['check'].append(c)
check = None
if dim and 'dimension' not in vars[n]:
vars[n]['dimension'] = []
for d in rmbadname(
[x.strip() for x in markoutercomma(dim).split('@,@')]
):
# d is the expression inside the dimension declaration
# Evaluate `d` with respect to params
try:
# the dimension for this variable depends on a
# previously defined parameter
d = param_parse(d, params)
except (ValueError, IndexError, KeyError):
outmess(
'analyzevars: could not parse dimension for '
f'variable {d!r}\n'
)
dim_char = ':' if d == ':' else '*'
if d == dim_char:
dl = [dim_char]
else:
dl = markoutercomma(d, ':').split('@:@')
if len(dl) == 2 and '*' in dl: # e.g. dimension(5:*)
dl = ['*']
d = '*'
if len(dl) == 1 and dl[0] != dim_char:
dl = ['1', dl[0]]
if len(dl) == 2:
d1, d2 = map(symbolic.Expr.parse, dl)
dsize = d2 - d1 + 1
d = dsize.tostring(language=symbolic.Language.C)
# find variables v that define d as a linear
# function, `d == a * v + b`, and store
# coefficients a and b for further analysis.
solver_and_deps = {}
for v in block['vars']:
s = symbolic.as_symbol(v)
if dsize.contains(s):
try:
a, b = dsize.linear_solve(s)
def solve_v(s, a=a, b=b):
return (s - b) / a
all_symbols = set(a.symbols())
all_symbols.update(b.symbols())
except RuntimeError as msg:
# d is not a linear function of v,
# however, if v can be determined
# from d using other means,
# implement the corresponding
# solve_v function here.
solve_v = None
all_symbols = set(dsize.symbols())
v_deps = set(
s.data for s in all_symbols
if s.data in vars)
solver_and_deps[v] = solve_v, list(v_deps)
# Note that dsize may contain symbols that are
# not defined in block['vars']. Here we assume
# these correspond to Fortran/C intrinsic
# functions or that are defined by other
# means. We'll let the compiler validate the
# definiteness of such symbols.
dimension_exprs[d] = solver_and_deps
vars[n]['dimension'].append(d)
if 'check' not in vars[n] and 'args' in block and n in block['args']:
# n is an argument that has no checks defined. Here we
# generate some consistency checks for n, and when n is an
# array, generate checks for its dimensions and construct
# initialization expressions.
n_deps = vars[n].get('depend', [])
n_checks = []
n_is_input = l_or(isintent_in, isintent_inout,
isintent_inplace)(vars[n])
if isarray(vars[n]): # n is array
for i, d in enumerate(vars[n]['dimension']):
coeffs_and_deps = dimension_exprs.get(d)
if coeffs_and_deps is None:
# d is `:` or `*` or a constant expression
pass
elif n_is_input:
# n is an input array argument and its shape
# may define variables used in dimension
# specifications.
for v, (solver, deps) in coeffs_and_deps.items():
def compute_deps(v, deps):
for v1 in coeffs_and_deps.get(v, [None, []])[1]:
if v1 not in deps:
deps.add(v1)
compute_deps(v1, deps)
all_deps = set()
compute_deps(v, all_deps)
if (v in n_deps
or '=' in vars[v]
or 'depend' in vars[v]):
# Skip a variable that
# - n depends on
# - has user-defined initialization expression
# - has user-defined dependencies
continue
if solver is not None and v not in all_deps:
# v can be solved from d, hence, we
# make it an optional argument with
# initialization expression:
is_required = False
init = solver(symbolic.as_symbol(
f'shape({n}, {i})'))
init = init.tostring(
language=symbolic.Language.C)
vars[v]['='] = init
# n needs to be initialized before v. So,
# making v dependent on n and on any
# variables in solver or d.
vars[v]['depend'] = [n] + deps
if 'check' not in vars[v]:
# add check only when no
# user-specified checks exist
vars[v]['check'] = [
f'shape({n}, {i}) == {d}']
else:
# d is a non-linear function on v,
# hence, v must be a required input
# argument that n will depend on
is_required = True
if 'intent' not in vars[v]:
vars[v]['intent'] = []
if 'in' not in vars[v]['intent']:
vars[v]['intent'].append('in')
# v needs to be initialized before n
n_deps.append(v)
n_checks.append(
f'shape({n}, {i}) == {d}')
v_attr = vars[v].get('attrspec', [])
if not ('optional' in v_attr
or 'required' in v_attr):
v_attr.append(
'required' if is_required else 'optional')
if v_attr:
vars[v]['attrspec'] = v_attr
if coeffs_and_deps is not None:
# extend v dependencies with ones specified in attrspec
for v, (solver, deps) in coeffs_and_deps.items():
v_deps = vars[v].get('depend', [])
for aa in vars[v].get('attrspec', []):
if aa.startswith('depend'):
aa = ''.join(aa.split())
v_deps.extend(aa[7:-1].split(','))
if v_deps:
vars[v]['depend'] = list(set(v_deps))
if n not in v_deps:
n_deps.append(v)
elif isstring(vars[n]):
if 'charselector' in vars[n]:
if '*' in vars[n]['charselector']:
length = _eval_length(vars[n]['charselector']['*'],
params)
vars[n]['charselector']['*'] = length
elif 'len' in vars[n]['charselector']:
length = _eval_length(vars[n]['charselector']['len'],
params)
del vars[n]['charselector']['len']
vars[n]['charselector']['*'] = length
if n_checks:
vars[n]['check'] = n_checks
if n_deps:
vars[n]['depend'] = list(set(n_deps))
if '=' in vars[n]:
if 'attrspec' not in vars[n]:
vars[n]['attrspec'] = []
if ('optional' not in vars[n]['attrspec']) and \
('required' not in vars[n]['attrspec']):
vars[n]['attrspec'].append('optional')
if 'depend' not in vars[n]:
vars[n]['depend'] = []
for v, m in list(dep_matches.items()):
if m(vars[n]['=']):
vars[n]['depend'].append(v)
if not vars[n]['depend']:
del vars[n]['depend']
if isscalar(vars[n]):
vars[n]['='] = _eval_scalar(vars[n]['='], params)
for n in list(vars.keys()):
if n == block['name']: # n is block name
if 'note' in vars[n]:
block['note'] = vars[n]['note']
if block['block'] == 'function':
if 'result' in block and block['result'] in vars:
vars[n] = appenddecl(vars[n], vars[block['result']])
if 'prefix' in block:
pr = block['prefix']
pr1 = pr.replace('pure', '')
ispure = (not pr == pr1)
pr = pr1.replace('recursive', '')
isrec = (not pr == pr1)
m = typespattern[0].match(pr)
if m:
typespec, selector, attr, edecl = cracktypespec0(
m.group('this'), m.group('after'))
kindselect, charselect, typename = cracktypespec(
typespec, selector)
vars[n]['typespec'] = typespec
try:
if block['result']:
vars[block['result']]['typespec'] = typespec
except Exception:
pass
if kindselect:
if 'kind' in kindselect:
try:
kindselect['kind'] = eval(
kindselect['kind'], {}, params)
except Exception:
pass
vars[n]['kindselector'] = kindselect
if charselect:
vars[n]['charselector'] = charselect
if typename:
vars[n]['typename'] = typename
if ispure:
vars[n] = setattrspec(vars[n], 'pure')
if isrec:
vars[n] = setattrspec(vars[n], 'recursive')
else:
outmess(
'analyzevars: prefix (%s) were not used\n' % repr(block['prefix']))
if block['block'] not in ['module', 'pythonmodule', 'python module', 'block data']:
if 'commonvars' in block:
neededvars = copy.copy(block['args'] + block['commonvars'])
else:
neededvars = copy.copy(block['args'])
for n in list(vars.keys()):
if l_or(isintent_callback, isintent_aux)(vars[n]):
neededvars.append(n)
if 'entry' in block:
neededvars.extend(list(block['entry'].keys()))
for k in list(block['entry'].keys()):
for n in block['entry'][k]:
if n not in neededvars:
neededvars.append(n)
if block['block'] == 'function':
if 'result' in block:
neededvars.append(block['result'])
else:
neededvars.append(block['name'])
if block['block'] in ['subroutine', 'function']:
name = block['name']
if name in vars and 'intent' in vars[name]:
block['intent'] = vars[name]['intent']
if block['block'] == 'type':
neededvars.extend(list(vars.keys()))
for n in list(vars.keys()):
if n not in neededvars:
del vars[n]
return vars
analyzeargs_re_1 = re.compile(r'\A[a-z]+[\w$]*\Z', re.I)
def param_eval(v, g_params, params, dimspec=None):
"""
Creates a dictionary of indices and values for each parameter in a
parameter array to be evaluated later.
WARNING: It is not possible to initialize multidimensional array
parameters e.g. dimension(-3:1, 4, 3:5) at this point. This is because in
Fortran initialization through array constructor requires the RESHAPE
intrinsic function. Since the right-hand side of the parameter declaration
is not executed in f2py, but rather at the compiled c/fortran extension,
later, it is not possible to execute a reshape of a parameter array.
One issue remains: if the user wants to access the array parameter from
python, we should either
1) allow them to access the parameter array using python standard indexing
(which is often incompatible with the original fortran indexing)
2) allow the parameter array to be accessed in python as a dictionary with
fortran indices as keys
We are choosing 2 for now.
"""
if dimspec is None:
try:
p = eval(v, g_params, params)
except Exception as msg:
p = v
outmess(f'param_eval: got "{msg}" on {v!r}\n')
return p
# This is an array parameter.
# First, we parse the dimension information
if len(dimspec) < 2 or dimspec[::len(dimspec)-1] != "()":
raise ValueError(f'param_eval: dimension {dimspec} can\'t be parsed')
dimrange = dimspec[1:-1].split(',')
if len(dimrange) == 1:
# e.g. dimension(2) or dimension(-1:1)
dimrange = dimrange[0].split(':')
# now, dimrange is a list of 1 or 2 elements
if len(dimrange) == 1:
bound = param_parse(dimrange[0], params)
dimrange = range(1, int(bound)+1)
else:
lbound = param_parse(dimrange[0], params)
ubound = param_parse(dimrange[1], params)
dimrange = range(int(lbound), int(ubound)+1)
else:
raise ValueError('param_eval: multidimensional array parameters '
f'{dimspec} not supported')
# Parse parameter value
v = (v[2:-2] if v.startswith('(/') else v).split(',')
v_eval = []
for item in v:
try:
item = eval(item, g_params, params)
except Exception as msg:
outmess(f'param_eval: got "{msg}" on {item!r}\n')
v_eval.append(item)
p = dict(zip(dimrange, v_eval))
return p
def param_parse(d, params):
"""Recursively parse array dimensions.
Parses the declaration of an array variable or parameter
`dimension` keyword, and is called recursively if the
dimension for this array is a previously defined parameter
(found in `params`).
Parameters
----------
d : str
Fortran expression describing the dimension of an array.
params : dict
Previously parsed parameters declared in the Fortran source file.
Returns
-------
out : str
Parsed dimension expression.
Examples
--------
* If the line being analyzed is
`integer, parameter, dimension(2) :: pa = (/ 3, 5 /)`
then `d = 2` and we return immediately, with
>>> d = '2'
>>> param_parse(d, params)
2
* If the line being analyzed is
`integer, parameter, dimension(pa) :: pb = (/1, 2, 3/)`
then `d = 'pa'`; since `pa` is a previously parsed parameter,
and `pa = 3`, we call `param_parse` recursively, to obtain
>>> d = 'pa'
>>> params = {'pa': 3}
>>> param_parse(d, params)
3
* If the line being analyzed is
`integer, parameter, dimension(pa(1)) :: pb = (/1, 2, 3/)`
then `d = 'pa(1)'`; since `pa` is a previously parsed parameter,
and `pa(1) = 3`, we call `param_parse` recursively, to obtain
>>> d = 'pa(1)'
>>> params = dict(pa={1: 3, 2: 5})
>>> param_parse(d, params)
3
"""
if "(" in d:
# this dimension expression is an array
dname = d[:d.find("(")]
ddims = d[d.find("(")+1:d.rfind(")")]
# this dimension expression is also a parameter;
# parse it recursively
index = int(param_parse(ddims, params))
return str(params[dname][index])
elif d in params:
return str(params[d])
else:
for p in params:
re_1 = re.compile(
r'(?P<before>.*?)\b' + p + r'\b(?P<after>.*)', re.I
)
m = re_1.match(d)
while m:
d = m.group('before') + \
str(params[p]) + m.group('after')
m = re_1.match(d)
return d
def expr2name(a, block, args=[]):
orig_a = a
a_is_expr = not analyzeargs_re_1.match(a)
if a_is_expr: # `a` is an expression
implicitrules, attrrules = buildimplicitrules(block)
at = determineexprtype(a, block['vars'], implicitrules)
na = 'e_'
for c in a:
c = c.lower()
if c not in string.ascii_lowercase + string.digits:
c = '_'
na = na + c
if na[-1] == '_':
na = na + 'e'
else:
na = na + '_e'
a = na
while a in block['vars'] or a in block['args']:
a = a + 'r'
if a in args:
k = 1
while a + str(k) in args:
k = k + 1
a = a + str(k)
if a_is_expr:
block['vars'][a] = at
else:
if a not in block['vars']:
if orig_a in block['vars']:
block['vars'][a] = block['vars'][orig_a]
else:
block['vars'][a] = {}
if 'externals' in block and orig_a in block['externals'] + block['interfaced']:
block['vars'][a] = setattrspec(block['vars'][a], 'external')
return a
def analyzeargs(block):
setmesstext(block)
implicitrules, _ = buildimplicitrules(block)
if 'args' not in block:
block['args'] = []
args = []
for a in block['args']:
a = expr2name(a, block, args)
args.append(a)
block['args'] = args
if 'entry' in block:
for k, args1 in list(block['entry'].items()):
for a in args1:
if a not in block['vars']:
block['vars'][a] = {}
for b in block['body']:
if b['name'] in args:
if 'externals' not in block:
block['externals'] = []
if b['name'] not in block['externals']:
block['externals'].append(b['name'])
if 'result' in block and block['result'] not in block['vars']:
block['vars'][block['result']] = {}
return block
determineexprtype_re_1 = re.compile(r'\A\(.+?,.+?\)\Z', re.I)
determineexprtype_re_2 = re.compile(r'\A[+-]?\d+(_(?P<name>\w+)|)\Z', re.I)
determineexprtype_re_3 = re.compile(
r'\A[+-]?[\d.]+[-\d+de.]*(_(?P<name>\w+)|)\Z', re.I)
determineexprtype_re_4 = re.compile(r'\A\(.*\)\Z', re.I)
determineexprtype_re_5 = re.compile(r'\A(?P<name>\w+)\s*\(.*?\)\s*\Z', re.I)
def _ensure_exprdict(r):
if isinstance(r, int):
return {'typespec': 'integer'}
if isinstance(r, float):
return {'typespec': 'real'}
if isinstance(r, complex):
return {'typespec': 'complex'}
if isinstance(r, dict):
return r
raise AssertionError(repr(r))
def determineexprtype(expr, vars, rules={}):
if expr in vars:
return _ensure_exprdict(vars[expr])
expr = expr.strip()
if determineexprtype_re_1.match(expr):
return {'typespec': 'complex'}
m = determineexprtype_re_2.match(expr)
if m:
if 'name' in m.groupdict() and m.group('name'):
outmess(
'determineexprtype: selected kind types not supported (%s)\n' % repr(expr))
return {'typespec': 'integer'}
m = determineexprtype_re_3.match(expr)
if m:
if 'name' in m.groupdict() and m.group('name'):
outmess(
'determineexprtype: selected kind types not supported (%s)\n' % repr(expr))
return {'typespec': 'real'}
for op in ['+', '-', '*', '/']:
for e in [x.strip() for x in markoutercomma(expr, comma=op).split('@' + op + '@')]:
if e in vars:
return _ensure_exprdict(vars[e])
t = {}
if determineexprtype_re_4.match(expr): # in parenthesis
t = determineexprtype(expr[1:-1], vars, rules)
else:
m = determineexprtype_re_5.match(expr)
if m:
rn = m.group('name')
t = determineexprtype(m.group('name'), vars, rules)
if t and 'attrspec' in t:
del t['attrspec']
if not t:
if rn[0] in rules:
return _ensure_exprdict(rules[rn[0]])
if expr[0] in '\'"':
return {'typespec': 'character', 'charselector': {'*': '*'}}
if not t:
outmess(
'determineexprtype: could not determine expressions (%s) type.\n' % (repr(expr)))
return t
######
def crack2fortrangen(block, tab='\n', as_interface=False):
global skipfuncs, onlyfuncs
setmesstext(block)
ret = ''
if isinstance(block, list):
for g in block:
if g and g['block'] in ['function', 'subroutine']:
if g['name'] in skipfuncs:
continue
if onlyfuncs and g['name'] not in onlyfuncs:
continue
ret = ret + crack2fortrangen(g, tab, as_interface=as_interface)
return ret
prefix = ''
name = ''
args = ''
blocktype = block['block']
if blocktype == 'program':
return ''
argsl = []
if 'name' in block:
name = block['name']
if 'args' in block:
vars = block['vars']
for a in block['args']:
a = expr2name(a, block, argsl)
if not isintent_callback(vars[a]):
argsl.append(a)
if block['block'] == 'function' or argsl:
args = '(%s)' % ','.join(argsl)
f2pyenhancements = ''
if 'f2pyenhancements' in block:
for k in list(block['f2pyenhancements'].keys()):
f2pyenhancements = '%s%s%s %s' % (
f2pyenhancements, tab + tabchar, k, block['f2pyenhancements'][k])
intent_lst = block.get('intent', [])[:]
if blocktype == 'function' and 'callback' in intent_lst:
intent_lst.remove('callback')
if intent_lst:
f2pyenhancements = '%s%sintent(%s) %s' %\
(f2pyenhancements, tab + tabchar,
','.join(intent_lst), name)
use = ''
if 'use' in block:
use = use2fortran(block['use'], tab + tabchar)
common = ''
if 'common' in block:
common = common2fortran(block['common'], tab + tabchar)
if name == 'unknown_interface':
name = ''
result = ''
if 'result' in block:
result = ' result (%s)' % block['result']
if block['result'] not in argsl:
argsl.append(block['result'])
body = crack2fortrangen(block['body'], tab + tabchar, as_interface=as_interface)
vars = vars2fortran(
block, block['vars'], argsl, tab + tabchar, as_interface=as_interface)
mess = ''
if 'from' in block and not as_interface:
mess = '! in %s' % block['from']
if 'entry' in block:
entry_stmts = ''
for k, i in list(block['entry'].items()):
entry_stmts = '%s%sentry %s(%s)' \
% (entry_stmts, tab + tabchar, k, ','.join(i))
body = body + entry_stmts
if blocktype == 'block data' and name == '_BLOCK_DATA_':
name = ''
ret = '%s%s%s %s%s%s %s%s%s%s%s%s%send %s %s' % (
tab, prefix, blocktype, name, args, result, mess, f2pyenhancements, use, vars, common, body, tab, blocktype, name)
return ret
def common2fortran(common, tab=''):
ret = ''
for k in list(common.keys()):
if k == '_BLNK_':
ret = '%s%scommon %s' % (ret, tab, ','.join(common[k]))
else:
ret = '%s%scommon /%s/ %s' % (ret, tab, k, ','.join(common[k]))
return ret
def use2fortran(use, tab=''):
ret = ''
for m in list(use.keys()):
ret = '%s%suse %s,' % (ret, tab, m)
if use[m] == {}:
if ret and ret[-1] == ',':
ret = ret[:-1]
continue
if 'only' in use[m] and use[m]['only']:
ret = '%s only:' % (ret)
if 'map' in use[m] and use[m]['map']:
c = ' '
for k in list(use[m]['map'].keys()):
if k == use[m]['map'][k]:
ret = '%s%s%s' % (ret, c, k)
c = ','
else:
ret = '%s%s%s=>%s' % (ret, c, k, use[m]['map'][k])
c = ','
if ret and ret[-1] == ',':
ret = ret[:-1]
return ret
def true_intent_list(var):
lst = var['intent']
ret = []
for intent in lst:
try:
f = globals()['isintent_%s' % intent]
except KeyError:
pass
else:
if f(var):
ret.append(intent)
return ret
def vars2fortran(block, vars, args, tab='', as_interface=False):
setmesstext(block)
ret = ''
nout = []
for a in args:
if a in block['vars']:
nout.append(a)
if 'commonvars' in block:
for a in block['commonvars']:
if a in vars:
if a not in nout:
nout.append(a)
else:
errmess(
'vars2fortran: Confused?!: "%s" is not defined in vars.\n' % a)
if 'varnames' in block:
nout.extend(block['varnames'])
if not as_interface:
for a in list(vars.keys()):
if a not in nout:
nout.append(a)
for a in nout:
if 'depend' in vars[a]:
for d in vars[a]['depend']:
if d in vars and 'depend' in vars[d] and a in vars[d]['depend']:
errmess(
'vars2fortran: Warning: cross-dependence between variables "%s" and "%s"\n' % (a, d))
if 'externals' in block and a in block['externals']:
if isintent_callback(vars[a]):
ret = '%s%sintent(callback) %s' % (ret, tab, a)
ret = '%s%sexternal %s' % (ret, tab, a)
if isoptional(vars[a]):
ret = '%s%soptional %s' % (ret, tab, a)
if a in vars and 'typespec' not in vars[a]:
continue
cont = 1
for b in block['body']:
if a == b['name'] and b['block'] == 'function':
cont = 0
break
if cont:
continue
if a not in vars:
show(vars)
outmess('vars2fortran: No definition for argument "%s".\n' % a)
continue
if a == block['name']:
if block['block'] != 'function' or block.get('result'):
# 1) skip declaring a variable that name matches with
# subroutine name
# 2) skip declaring function when its type is
# declared via `result` construction
continue
if 'typespec' not in vars[a]:
if 'attrspec' in vars[a] and 'external' in vars[a]['attrspec']:
if a in args:
ret = '%s%sexternal %s' % (ret, tab, a)
continue
show(vars[a])
outmess('vars2fortran: No typespec for argument "%s".\n' % a)
continue
vardef = vars[a]['typespec']
if vardef == 'type' and 'typename' in vars[a]:
vardef = '%s(%s)' % (vardef, vars[a]['typename'])
selector = {}
if 'kindselector' in vars[a]:
selector = vars[a]['kindselector']
elif 'charselector' in vars[a]:
selector = vars[a]['charselector']
if '*' in selector:
if selector['*'] in ['*', ':']:
vardef = '%s*(%s)' % (vardef, selector['*'])
else:
vardef = '%s*%s' % (vardef, selector['*'])
else:
if 'len' in selector:
vardef = '%s(len=%s' % (vardef, selector['len'])
if 'kind' in selector:
vardef = '%s,kind=%s)' % (vardef, selector['kind'])
else:
vardef = '%s)' % (vardef)
elif 'kind' in selector:
vardef = '%s(kind=%s)' % (vardef, selector['kind'])
c = ' '
if 'attrspec' in vars[a]:
attr = [l for l in vars[a]['attrspec']
if l not in ['external']]
if as_interface and 'intent(in)' in attr and 'intent(out)' in attr:
# In Fortran, intent(in, out) are conflicting while
# intent(in, out) can be specified only via
# `!f2py intent(out) ..`.
# So, for the Fortran interface, we'll drop
# intent(out) to resolve the conflict.
attr.remove('intent(out)')
if attr:
vardef = '%s, %s' % (vardef, ','.join(attr))
c = ','
if 'dimension' in vars[a]:
vardef = '%s%sdimension(%s)' % (
vardef, c, ','.join(vars[a]['dimension']))
c = ','
if 'intent' in vars[a]:
lst = true_intent_list(vars[a])
if lst:
vardef = '%s%sintent(%s)' % (vardef, c, ','.join(lst))
c = ','
if 'check' in vars[a]:
vardef = '%s%scheck(%s)' % (vardef, c, ','.join(vars[a]['check']))
c = ','
if 'depend' in vars[a]:
vardef = '%s%sdepend(%s)' % (
vardef, c, ','.join(vars[a]['depend']))
c = ','
if '=' in vars[a]:
v = vars[a]['=']
if vars[a]['typespec'] in ['complex', 'double complex']:
try:
v = eval(v)
v = '(%s,%s)' % (v.real, v.imag)
except Exception:
pass
vardef = '%s :: %s=%s' % (vardef, a, v)
else:
vardef = '%s :: %s' % (vardef, a)
ret = '%s%s%s' % (ret, tab, vardef)
return ret
######
# We expose post_processing_hooks as global variable so that
# user-libraries could register their own hooks to f2py.
post_processing_hooks = []
def crackfortran(files):
global usermodules, post_processing_hooks
outmess('Reading fortran codes...\n', 0)
readfortrancode(files, crackline)
outmess('Post-processing...\n', 0)
usermodules = []
postlist = postcrack(grouplist[0])
outmess('Applying post-processing hooks...\n', 0)
for hook in post_processing_hooks:
outmess(f' {hook.__name__}\n', 0)
postlist = traverse(postlist, hook)
outmess('Post-processing (stage 2)...\n', 0)
postlist = postcrack2(postlist)
return usermodules + postlist
def crack2fortran(block):
global f2py_version
pyf = crack2fortrangen(block) + '\n'
header = """! -*- f90 -*-
! Note: the context of this file is case sensitive.
"""
footer = """
! This file was auto-generated with f2py (version:%s).
! See:
! https://web.archive.org/web/20140822061353/http://cens.ioc.ee/projects/f2py2e
""" % (f2py_version)
return header + pyf + footer
def _is_visit_pair(obj):
return (isinstance(obj, tuple)
and len(obj) == 2
and isinstance(obj[0], (int, str)))
def traverse(obj, visit, parents=[], result=None, *args, **kwargs):
'''Traverse f2py data structure with the following visit function:
def visit(item, parents, result, *args, **kwargs):
"""
parents is a list of key-"f2py data structure" pairs from which
items are taken from.
result is a f2py data structure that is filled with the
return value of the visit function.
item is 2-tuple (index, value) if parents[-1][1] is a list
item is 2-tuple (key, value) if parents[-1][1] is a dict
The return value of visit must be None, or of the same kind as
item, that is, if parents[-1] is a list, the return value must
be 2-tuple (new_index, new_value), or if parents[-1] is a
dict, the return value must be 2-tuple (new_key, new_value).
If new_index or new_value is None, the return value of visit
is ignored, that is, it will not be added to the result.
If the return value is None, the content of obj will be
traversed, otherwise not.
"""
'''
if _is_visit_pair(obj):
if obj[0] == 'parent_block':
# avoid infinite recursion
return obj
new_result = visit(obj, parents, result, *args, **kwargs)
if new_result is not None:
assert _is_visit_pair(new_result)
return new_result
parent = obj
result_key, obj = obj
else:
parent = (None, obj)
result_key = None
if isinstance(obj, list):
new_result = []
for index, value in enumerate(obj):
new_index, new_item = traverse((index, value), visit,
parents=parents + [parent],
result=result, *args, **kwargs)
if new_index is not None:
new_result.append(new_item)
elif isinstance(obj, dict):
new_result = dict()
for key, value in obj.items():
new_key, new_value = traverse((key, value), visit,
parents=parents + [parent],
result=result, *args, **kwargs)
if new_key is not None:
new_result[new_key] = new_value
else:
new_result = obj
if result_key is None:
return new_result
return result_key, new_result
def character_backward_compatibility_hook(item, parents, result,
*args, **kwargs):
"""Previously, Fortran character was incorrectly treated as
character*1. This hook fixes the usage of the corresponding
variables in `check`, `dimension`, `=`, and `callstatement`
expressions.
The usage of `char*` in `callprotoargument` expression can be left
unchanged because C `character` is C typedef of `char`, although,
new implementations should use `character*` in the corresponding
expressions.
See https://github.com/numpy/numpy/pull/19388 for more information.
"""
parent_key, parent_value = parents[-1]
key, value = item
def fix_usage(varname, value):
value = re.sub(r'[*]\s*\b' + varname + r'\b', varname, value)
value = re.sub(r'\b' + varname + r'\b\s*[\[]\s*0\s*[\]]',
varname, value)
return value
if parent_key in ['dimension', 'check']:
assert parents[-3][0] == 'vars'
vars_dict = parents[-3][1]
elif key == '=':
assert parents[-2][0] == 'vars'
vars_dict = parents[-2][1]
else:
vars_dict = None
new_value = None
if vars_dict is not None:
new_value = value
for varname, vd in vars_dict.items():
if ischaracter(vd):
new_value = fix_usage(varname, new_value)
elif key == 'callstatement':
vars_dict = parents[-2][1]['vars']
new_value = value
for varname, vd in vars_dict.items():
if ischaracter(vd):
# replace all occurrences of `<varname>` with
# `&<varname>` in argument passing
new_value = re.sub(
r'(?<![&])\b' + varname + r'\b', '&' + varname, new_value)
if new_value is not None:
if new_value != value:
# We report the replacements here so that downstream
# software could update their source codes
# accordingly. However, such updates are recommended only
# when BC with numpy 1.21 or older is not required.
outmess(f'character_bc_hook[{parent_key}.{key}]:'
f' replaced `{value}` -> `{new_value}`\n', 1)
return (key, new_value)
post_processing_hooks.append(character_backward_compatibility_hook)
if __name__ == "__main__":
files = []
funcs = []
f = 1
f2 = 0
f3 = 0
showblocklist = 0
for l in sys.argv[1:]:
if l == '':
pass
elif l[0] == ':':
f = 0
elif l == '-quiet':
quiet = 1
verbose = 0
elif l == '-verbose':
verbose = 2
quiet = 0
elif l == '-fix':
if strictf77:
outmess(
'Use option -f90 before -fix if Fortran 90 code is in fix form.\n', 0)
skipemptyends = 1
sourcecodeform = 'fix'
elif l == '-skipemptyends':
skipemptyends = 1
elif l == '--ignore-contains':
ignorecontains = 1
elif l == '-f77':
strictf77 = 1
sourcecodeform = 'fix'
elif l == '-f90':
strictf77 = 0
sourcecodeform = 'free'
skipemptyends = 1
elif l == '-h':
f2 = 1
elif l == '-show':
showblocklist = 1
elif l == '-m':
f3 = 1
elif l[0] == '-':
errmess('Unknown option %s\n' % repr(l))
elif f2:
f2 = 0
pyffilename = l
elif f3:
f3 = 0
f77modulename = l
elif f:
try:
open(l).close()
files.append(l)
except OSError as detail:
errmess(f'OSError: {detail!s}\n')
else:
funcs.append(l)
if not strictf77 and f77modulename and not skipemptyends:
outmess("""\
Warning: You have specified module name for non Fortran 77 code that
should not need one (expect if you are scanning F90 code for non
module blocks but then you should use flag -skipemptyends and also
be sure that the files do not contain programs without program
statement).
""", 0)
postlist = crackfortran(files)
if pyffilename:
outmess('Writing fortran code to file %s\n' % repr(pyffilename), 0)
pyf = crack2fortran(postlist)
with open(pyffilename, 'w') as f:
f.write(pyf)
if showblocklist:
show(postlist)