forked from OSchip/llvm-project
145 lines
4.3 KiB
Python
Executable File
145 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python
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# A tool to parse the FormatStyle struct from Format.h and update the
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# documentation in ../ClangFormatStyleOptions.rst automatically.
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# Run from the directory in which this file is located to update the docs.
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import collections
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import re
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import urllib2
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FORMAT_STYLE_FILE = '../../include/clang/Format/Format.h'
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DOC_FILE = '../ClangFormatStyleOptions.rst'
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def substitute(text, tag, contents):
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replacement = '\n.. START_%s\n\n%s\n\n.. END_%s\n' % (tag, contents, tag)
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pattern = r'\n\.\. START_%s\n.*\n\.\. END_%s\n' % (tag, tag)
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return re.sub(pattern, '%s', text, flags=re.S) % replacement
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def doxygen2rst(text):
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text = re.sub(r'<tt>\s*(.*?)\s*<\/tt>', r'``\1``', text)
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text = re.sub(r'\\c ([^ ,;\.]+)', r'``\1``', text)
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text = re.sub(r'\\\w+ ', '', text)
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return text
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def indent(text, columns):
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indent = ' ' * columns
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s = re.sub(r'\n([^\n])', '\n' + indent + '\\1', text, flags=re.S)
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if s.startswith('\n'):
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return s
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return indent + s
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class Option:
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def __init__(self, name, type, comment):
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self.name = name
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self.type = type
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self.comment = comment.strip()
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self.enum = None
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def __str__(self):
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s = '**%s** (``%s``)\n%s' % (self.name, self.type,
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doxygen2rst(indent(self.comment, 2)))
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if self.enum:
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s += indent('\n\nPossible values:\n\n%s\n' % self.enum, 2)
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return s
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class Enum:
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def __init__(self, name, comment):
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self.name = name
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self.comment = comment.strip()
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self.values = []
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def __str__(self):
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return '\n'.join(map(str, self.values))
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class EnumValue:
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def __init__(self, name, comment):
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self.name = name
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self.comment = comment.strip()
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def __str__(self):
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return '* ``%s`` (in configuration: ``%s``)\n%s' % (
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self.name,
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re.sub('.*_', '', self.name),
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doxygen2rst(indent(self.comment, 2)))
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def clean_comment_line(line):
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return line[3:].strip() + '\n'
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def read_options(header):
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class State:
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BeforeStruct, Finished, InStruct, InFieldComment, InEnum, \
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InEnumMemberComment = range(6)
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state = State.BeforeStruct
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options = []
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enums = {}
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comment = ''
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enum = None
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for line in header:
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line = line.strip()
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if state == State.BeforeStruct:
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if line == 'struct FormatStyle {':
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state = State.InStruct
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elif state == State.InStruct:
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if line.startswith('///'):
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state = State.InFieldComment
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comment = clean_comment_line(line)
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elif line == '};':
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state = State.Finished
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break
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elif state == State.InFieldComment:
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if line.startswith('///'):
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comment += clean_comment_line(line)
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elif line.startswith('enum'):
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state = State.InEnum
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name = re.sub(r'enum\s+(\w+)\s*\{', '\\1', line)
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enum = Enum(name, comment)
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elif line.endswith(';'):
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state = State.InStruct
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field_type, field_name = re.match(r'([<>:\w]+)\s+(\w+);', line).groups()
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option = Option(str(field_name), str(field_type), comment)
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options.append(option)
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else:
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raise Exception('Invalid format, expected comment, field or enum')
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elif state == State.InEnum:
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if line.startswith('///'):
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state = State.InEnumMemberComment
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comment = clean_comment_line(line)
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elif line == '};':
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state = State.InStruct
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enums[enum.name] = enum
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else:
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raise Exception('Invalid format, expected enum field comment or };')
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elif state == State.InEnumMemberComment:
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if line.startswith('///'):
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comment += clean_comment_line(line)
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else:
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state = State.InEnum
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enum.values.append(EnumValue(line.replace(',', ''), comment))
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if state != State.Finished:
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raise Exception('Not finished by the end of file')
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for option in options:
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if not option.type in ['bool', 'unsigned', 'int', 'std::string',
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'std::vector<std::string>']:
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if enums.has_key(option.type):
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option.enum = enums[option.type]
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else:
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raise Exception('Unknown type: %s' % option.type)
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return options
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options = read_options(open(FORMAT_STYLE_FILE))
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options = sorted(options, key=lambda x: x.name)
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options_text = '\n\n'.join(map(str, options))
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contents = open(DOC_FILE).read()
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contents = substitute(contents, 'FORMAT_STYLE_OPTIONS', options_text)
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with open(DOC_FILE, 'w') as output:
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output.write(contents)
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