147 kB

	"""
	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'])
	characterC['']
	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 codecs
	import copy
	import fileinput
	import os
	import platform
	import re
	import string
	import sys
	from pathlib import Path

	try:
	import charset_normalizer
	except ImportError:
	charset_normalizer = None

	from . import __version__, symbolic

	# 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 *

	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(f'rmbadname1: Replacing "{name}" with "{badnames[name]}".\n')
	return badnames[name]
	return name


	def rmbadname(names):
	return [rmbadname1(_m) for _m in names]


	def undo_rmbadname1(name):
	if name in invbadnames:
	errmess(f'undo_rmbadname1: Replacing "{name}" with "{invbadnames[name]}".\n')
	return invbadnames[name]
	return name


	def undo_rmbadname(names):
	return [undo_rmbadname1(_m) for _m in names]


	_has_f_header = re.compile(r'-\-\sfortran\s-\-', re.I).search
	_has_f90_header = re.compile(r'-\-\sf90\s-\-', re.I).search
	_has_fix_header = re.compile(r'-\-\sfix\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'\sinclude\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(
	f"Flag sourcecodeform must be either 'fix' or 'free': {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(?!\sprocedure)\|python\smodule\|(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=f"[^\"'{re.escape(characters)}]",
	char=f"[{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'\sbind$\s(?P<lang>[^,]+)\s,\sname\s=\s"(?P<lang_name>[^"]+)"\s*$', 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 = f"callfun {name}({a}) result ({m2.group('result')})"
	else:
	line = f'callfun {name}({a})'
	m = callfunpattern[0].match(line)
	if not m:
	outmess(
	f'crackline: could not resolve function call for line={repr(line)}.\n')
	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(f'appenddecl: "{k}" not implemented.\n')
	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$\s(?P<lang>[^,]+)(?:\s,\sname\s=\s["\'](?P<name>[^"\']+)["\']\s)?$', 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(
	f'analyzeline: no group yet. Creating program group with name "{newname}".\n')
	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] = {'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
	elif 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 in {'operator', '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(
	f'analyzeline: intent(callback) {k} is ignored\n')
	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(
	f'analyzeline: could not extract name,expr in parameter statement "{e}" of "{ll}\"\n')
	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'):
	impl = groupcache[groupcounter].get('implicit', {})
	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(
	f'analyzeline: could not extract info of implicit statement part "{e}\"\n')
	continue
	m2 = typespattern4implicit.match(m1.group('this'))
	if not m2:
	outmess(
	f'analyzeline: could not extract types pattern of implicit statement part "{e}\"\n')
	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(
	f'analyzeline: expected "<char>-<char>" instead of "{r}" in range list of implicit statement\n')
	continue
	else:
	begc = endc = r.strip()
	if not len(begc) == len(endc) == 1:
	outmess(
	f'analyzeline: expected "<char>-<char>" instead of "{r}" in range list of implicit statement (2)\n')
	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().removeprefix(','), l[1].strip()
	if l[0].startswith('('):
	outmess(f'analyzeline: implied-DO list "{l[0]}" is not supported. Skipping.\n')
	continue
	for idx, v in enumerate(rmbadname([x.strip() for x in markoutercomma(l[0]).split('@,@')])):
	if v.startswith('('):
	outmess(f'analyzeline: implied-DO list "{v}" is not supported. Skipping.\n')
	# 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(f'Comment line in declaration "{l[1]}" is not supported. Skipping.\n')
	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 = f"(/{', '.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 = f"(/{', '.join(matches)}/)" if vdim else matches[idx]
	current_val = vars[v].get('=')
	if current_val and (current_val != new_val):
	outmess(f'analyzeline: changing init expression of "{v}" ("{current_val}") to "{new_val}\"\n')
	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 = []
	[_, bn, ol] = re.split('/', line, maxsplit=2) # noqa: RUF039
	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(
	f'analyzeline: Not local=>use pattern found in {repr(l)}\n')
	else:
	rl[l] = l
	groupcache[groupcounter]['use'][name]['map'] = rl
	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'))
	elif 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)


	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(@,@\slen\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(
	f'updatevars: no name pattern found for entity={repr(e)}. Skipping.\n')
	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 = f"dimension({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(
	f'cracktypespec: no kindselector pattern found for {repr(selector)}\n')
	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(
	f'cracktypespec: no charselector pattern found for {repr(selector)}\n')
	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(f'cracktypespec: no selector used for {repr(selector)}\n')
	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 = f"In: {block['from']}:{block['name']}\n"
	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(f'get_useparameters: mapping for {mapping} not impl.\n')
	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(f"{tab}Block: {block['name']}\n", 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(f"{tab}Block: {block['name']}\n", 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 f"{mname}_{i}" in userisdefined:
	i = i + 1
	mname = f"{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)
	elif 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(
	f"dimension({','.join(dims)})")
	else:
	block['vars'][n]['attrspec'] = [
	f"dimension({','.join(dims)})"]
	elif dims:
	block['vars'][n] = {
	'attrspec': [f"dimension({','.join(dims)})"]}
	else:
	block['vars'][n] = {}
	if n not in commonvars:
	commonvars.append(n)
	else:
	n = e
	errmess(
	f'analyzecommon: failed to extract "<name>[(<dims>)]" from "{e}" in common /{k}/.\n')
	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(
	f"buildimplicitrules: no implicit rules for routine {repr(block['name'])}.\n")
	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(f'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('3x + x2 + 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 + 2x + 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 = f"{m1.group('before')}({0}){m1.group('after')}"
	m1 = re_1.match(ee)
	b = myeval(ee, {}, {})
	m1 = re_1.match(e)
	while m1:
	ee = f"{m1.group('before')}({1}){m1.group('after')}"
	m1 = re_1.match(ee)
	a = myeval(ee, {}, {}) - b
	m1 = re_1.match(e)
	while m1:
	ee = f"{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 = f"{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(f'_get_depend_dict: no dependence info for {repr(name)}\n')
	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
	elif 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) \| {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 = {
	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(
	f"analyzevars: prefix ({repr(block['prefix'])}) were not used\n")
	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']:
	block['vars'][a] = block['vars'].get(orig_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(
	f'determineexprtype: selected kind types not supported ({repr(expr)})\n')
	return {'typespec': 'integer'}
	m = determineexprtype_re_3.match(expr)
	if m:
	if 'name' in m.groupdict() and m.group('name'):
	outmess(
	f'determineexprtype: selected kind types not supported ({repr(expr)})\n')
	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(
	f'determineexprtype: could not determine expressions ({repr(expr)}) type.\n')
	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 = f"({','.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 = f" result ({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 = f"! in {block['from']}"
	if 'entry' in block:
	entry_stmts = ''
	for k, i in list(block['entry'].items()):
	entry_stmts = f"{entry_stmts}{tab + tabchar}entry {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 = f"{ret}{tab}common {','.join(common[k])}"
	else:
	ret = f"{ret}{tab}common /{k}/ {','.join(common[k])}"
	return ret


	def use2fortran(use, tab=''):
	ret = ''
	for m in list(use.keys()):
	ret = f'{ret}{tab}use {m},'
	if use[m] == {}:
	if ret and ret[-1] == ',':
	ret = ret[:-1]
	continue
	if 'only' in use[m] and use[m]['only']:
	ret = f'{ret} only:'
	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 = f'{ret}{c}{k}'
	c = ','
	else:
	ret = f"{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()[f'isintent_{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(
	f'vars2fortran: Confused?!: "{a}" is not defined in vars.\n')
	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(
	f'vars2fortran: Warning: cross-dependence between variables "{a}" and "{d}\"\n')
	if 'externals' in block and a in block['externals']:
	if isintent_callback(vars[a]):
	ret = f'{ret}{tab}intent(callback) {a}'
	ret = f'{ret}{tab}external {a}'
	if isoptional(vars[a]):
	ret = f'{ret}{tab}optional {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(f'vars2fortran: No definition for argument "{a}".\n')
	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 = f'{ret}{tab}external {a}'
	continue
	show(vars[a])
	outmess(f'vars2fortran: No typespec for argument "{a}".\n')
	continue
	vardef = vars[a]['typespec']
	if vardef == 'type' and 'typename' in vars[a]:
	vardef = f"{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 = f"{vardef}({selector['']})"
	else:
	vardef = f"{vardef}{selector['']}"
	elif 'len' in selector:
	vardef = f"{vardef}(len={selector['len']}"
	if 'kind' in selector:
	vardef = f"{vardef},kind={selector['kind']})"
	else:
	vardef = f'{vardef})'
	elif 'kind' in selector:
	vardef = f"{vardef}(kind={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 = f"{vardef}, {','.join(attr)}"
	c = ','
	if 'dimension' in vars[a]:
	vardef = f"{vardef}{c}dimension({','.join(vars[a]['dimension'])})"
	c = ','
	if 'intent' in vars[a]:
	lst = true_intent_list(vars[a])
	if lst:
	vardef = f"{vardef}{c}intent({','.join(lst)})"
	c = ','
	if 'check' in vars[a]:
	vardef = f"{vardef}{c}check({','.join(vars[a]['check'])})"
	c = ','
	if 'depend' in vars[a]:
	vardef = f"{vardef}{c}depend({','.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 = f'({v.real},{v.imag})'
	except Exception:
	pass
	vardef = f'{vardef} :: {a}={v}'
	else:
	vardef = f'{vardef} :: {a}'
	ret = f'{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 + [parent], result,
	args, *kwargs)
	if new_index is not None:
	new_result.append(new_item)
	elif isinstance(obj, dict):
	new_result = {}
	for key, value in obj.items():
	new_key, new_value = traverse((key, value), visit,
	parents + [parent], 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[\[]\s0\s*[\]]',
	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(f'Unknown option {repr(l)}\n')
	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(f'Writing fortran code to file {repr(pyffilename)}\n', 0)
	pyf = crack2fortran(postlist)
	with open(pyffilename, 'w') as f:
	f.write(pyf)
	if showblocklist:
	show(postlist)

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