mirror of
https://github.com/pybind/pybind11.git
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251 lines
8.2 KiB
Python
251 lines
8.2 KiB
Python
#!/usr/bin/env python3
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#
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# Syntax: mkdoc.py [-I<path> ..] [.. a list of header files ..]
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#
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# Extract documentation from C++ header files to use it in Python bindings
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#
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import os, sys, platform, re, textwrap
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from clang import cindex
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from clang.cindex import CursorKind
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from collections import OrderedDict
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from threading import Thread, Semaphore
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from multiprocessing import cpu_count
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RECURSE_LIST = [
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CursorKind.TRANSLATION_UNIT,
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CursorKind.NAMESPACE,
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CursorKind.CLASS_DECL,
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CursorKind.STRUCT_DECL,
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CursorKind.CLASS_TEMPLATE
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]
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PRINT_LIST = [
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CursorKind.CLASS_DECL,
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CursorKind.STRUCT_DECL,
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CursorKind.CLASS_TEMPLATE,
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CursorKind.FUNCTION_DECL,
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CursorKind.FUNCTION_TEMPLATE,
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CursorKind.CXX_METHOD,
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CursorKind.CONSTRUCTOR,
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CursorKind.FIELD_DECL
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]
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CPP_OPERATORS = {
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'<=' : 'le', '>=' : 'ge', '==' : 'eq', '!=' : 'ne', '[]' : 'array',
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'+=' : 'iadd', '-=' : 'isub', '*=' : 'imul', '/=' : 'idiv', '%=' :
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'imod', '&=' : 'iand', '|=' : 'ior', '^=' : 'ixor', '<<=' : 'ilshift',
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'>>=' : 'irshift', '++' : 'inc', '--' : 'dec', '<<' : 'lshift', '>>' :
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'rshift', '&&' : 'land', '||' : 'lor', '!' : 'lnot', '~' : 'bnot', '&'
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: 'band', '|' : 'bor', '+' : 'add', '-' : 'sub', '*' : 'mul', '/' :
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'div', '%' : 'mod', '<' : 'lt', '>' : 'gt', '=' : 'assign'
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}
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CPP_OPERATORS = OrderedDict(sorted(CPP_OPERATORS.items(), key=lambda t: -len(t[0])))
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job_count = cpu_count()
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job_semaphore = Semaphore(job_count)
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registered_names = dict()
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def d(s):
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return s.decode('utf8')
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def sanitize_name(name):
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global registered_names
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for k, v in CPP_OPERATORS.items():
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name = name.replace('operator%s' % k, 'operator_%s' % v)
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name = name.replace('<', '_')
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name = name.replace('>', '_')
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name = name.replace(' ', '_')
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name = name.replace(',', '_')
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if name in registered_names:
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registered_names[name] += 1
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name += '_' + str(registered_names[name])
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else:
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registered_names[name] = 1
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return '__doc_' + name
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def process_comment(comment):
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result = ''
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# Remove C++ comment syntax
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for s in comment.splitlines():
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s = s.strip()
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if s.startswith('/*'):
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s = s[2:].lstrip('* \t')
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elif s.endswith('*/'):
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s = s[:-2].rstrip('* \t')
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elif s.startswith('///'):
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s = s[3:]
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if s.startswith('*'):
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s = s[1:]
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result += s.strip() + '\n'
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# Doxygen tags
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cpp_group = '([\w:]+)'
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param_group = '([\[\w:\]]+)'
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s = result
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s = re.sub(r'\\c\s+%s' % cpp_group, r'``\1``', s)
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s = re.sub(r'\\a\s+%s' % cpp_group, r'*\1*', s)
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s = re.sub(r'\\e\s+%s' % cpp_group, r'*\1*', s)
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s = re.sub(r'\\em\s+%s' % cpp_group, r'*\1*', s)
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s = re.sub(r'\\b\s+%s' % cpp_group, r'**\1**', s)
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s = re.sub(r'\\param%s?\s+%s' % (param_group, cpp_group), r'\n\n$Parameter ``\2``:\n\n', s)
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for in_, out_ in {
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'return' : 'Returns',
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'author' : 'Author',
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'authors' : 'Authors',
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'copyright' : 'Copyright',
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'date' : 'Date',
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'remark' : 'Remark',
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'sa' : 'See also',
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'see' : 'See also',
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'extends' : 'Extends',
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'throw' : 'Throws',
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'throws' : 'Throws' }.items():
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s = re.sub(r'\\%s\s*' % in_, r'\n\n$%s:\n\n' % out_, s)
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s = re.sub(r'\\details\s*', r'\n\n', s)
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s = re.sub(r'\\brief\s*', r'', s)
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s = re.sub(r'\\short\s*', r'', s)
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s = re.sub(r'\\ref\s*', r'', s)
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# HTML/TeX tags
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s = re.sub(r'<tt>([^<]*)</tt>', r'``\1``', s)
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s = re.sub(r'<em>([^<]*)</em>', r'*\1*', s)
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s = re.sub(r'<b>([^<]*)</b>', r'**\1**', s)
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s = re.sub(r'\\f\$([^\$]*)\\f\$', r'$\1$', s)
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s = s.replace('``true``', '``True``')
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s = s.replace('``false``', '``False``')
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# Re-flow text
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wrapper = textwrap.TextWrapper()
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wrapper.expand_tabs = True
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wrapper.replace_whitespace = True
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wrapper.width = 75
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wrapper.initial_indent = wrapper.subsequent_indent = ''
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result = ''
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for x in re.split(r'\n{2,}', s):
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wrapped = wrapper.fill(x.strip())
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if len(wrapped) > 0 and wrapped[0] == '$':
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result += wrapped[1:] + '\n'
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wrapper.initial_indent = wrapper.subsequent_indent = ' '*4
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else:
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result += wrapped + '\n\n'
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wrapper.initial_indent = wrapper.subsequent_indent = ''
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return result.rstrip()
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def extract(filename, node, prefix, output):
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num_extracted = 0
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if not (node.location.file is None or os.path.samefile(d(node.location.file.name), filename)):
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return 0
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if node.kind in RECURSE_LIST:
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sub_prefix = prefix
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if node.kind != CursorKind.TRANSLATION_UNIT:
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if len(sub_prefix) > 0:
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sub_prefix += '_'
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sub_prefix += d(node.spelling)
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for i in node.get_children():
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num_extracted += extract(filename, i, sub_prefix, output)
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if num_extracted == 0:
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return 0
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if node.kind in PRINT_LIST:
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comment = d(node.raw_comment) if node.raw_comment is not None else ''
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comment = process_comment(comment)
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sub_prefix = prefix
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if len(sub_prefix) > 0:
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sub_prefix += '_'
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name = sanitize_name(sub_prefix + d(node.spelling))
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output.append('\nstatic const char *%s = %sR"doc(%s)doc";' % (name, '\n' if '\n' in comment else '', comment))
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num_extracted += 1
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return num_extracted
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class ExtractionThread(Thread):
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def __init__ (self, filename, parameters, output):
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Thread.__init__(self)
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self.filename = filename
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self.parameters = parameters
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self.output = output
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job_semaphore.acquire()
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def run(self):
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print('Processing "%s" ..' % self.filename, file = sys.stderr)
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try:
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index = cindex.Index(cindex.conf.lib.clang_createIndex(False, True))
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tu = index.parse(self.filename, self.parameters)
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extract(self.filename, tu.cursor, '', self.output)
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finally:
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job_semaphore.release()
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if __name__ == '__main__':
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parameters = ['-x', 'c++', '-std=c++11']
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filenames = []
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if platform.system() == 'Darwin':
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libclang = '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/libclang.dylib'
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if os.path.exists(libclang):
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cindex.Config.set_library_path(os.path.dirname(libclang))
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base_path = '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs'
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if os.path.exists(base_path):
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sysroot = os.path.join(base_path, next(os.walk(base_path))[1][0])
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parameters.append('-isysroot')
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parameters.append(sysroot)
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for item in sys.argv[1:]:
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if item.startswith('-'):
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parameters.append(item)
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else:
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filenames.append(item)
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if len(filenames) == 0:
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print('Syntax: %s [.. a list of header files ..]' % sys.argv[0])
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exit(-1)
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print('''/*
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This file contains docstrings for the Python bindings.
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Do not edit! These were automatically extracted by mkdoc.py
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*/
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#define __EXPAND(x) x
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#define __COUNT(_1, _2, _3, _4, _5, COUNT, ...) COUNT
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#define __VA_SIZE(...) __EXPAND(__COUNT(__VA_ARGS__, 5, 4, 3, 2, 1))
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#define __CAT1(a, b) a ## b
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#define __CAT2(a, b) __CAT1(a, b)
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#define __DOC1(n1) __doc_##n1
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#define __DOC2(n1, n2) __doc_##n1##_##n2
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#define __DOC3(n1, n2, n3) __doc_##n1##_##n2##_##n3
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#define __DOC4(n1, n2, n3, n4) __doc_##n1##_##n2##_##n3##_##n4
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#define __DOC5(n1, n2, n3, n4, n5) __doc_##n1##_##n2##_##n3##_##n4_##n5
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#define DOC(...) __EXPAND(__EXPAND(__CAT2(__DOC, __VA_SIZE(__VA_ARGS__)))(__VA_ARGS__))
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#if defined(__GNUG__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-variable"
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#endif
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''')
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output = []
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for filename in filenames:
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thr = ExtractionThread(filename, parameters, output)
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thr.start()
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print('Waiting for jobs to finish ..', file = sys.stderr)
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for i in range(job_count):
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job_semaphore.acquire()
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output.sort()
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for l in output:
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print(l)
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print('''
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#if defined(__GNUG__)
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#pragma GCC diagnostic pop
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#endif
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''')
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