| 1 | #!/usr/bin/env python |
| 2 | # A tool to parse the FormatStyle struct from Format.h and update the |
| 3 | # documentation in ../ClangFormatStyleOptions.rst automatically. |
| 4 | # Run from the directory in which this file is located to update the docs. |
| 5 | |
| 6 | import collections |
| 7 | import os |
| 8 | import re |
| 9 | |
| 10 | CLANG_DIR = os.path.join(os.path.dirname(__file__), '../..') |
| 11 | FORMAT_STYLE_FILE = os.path.join(CLANG_DIR, 'include/clang/Format/Format.h') |
| 12 | INCLUDE_STYLE_FILE = os.path.join(CLANG_DIR, 'include/clang/Tooling/Inclusions/IncludeStyle.h') |
| 13 | DOC_FILE = os.path.join(CLANG_DIR, 'docs/ClangFormatStyleOptions.rst') |
| 14 | |
| 15 | |
| 16 | def substitute(text, tag, contents): |
| 17 | replacement = '\n.. START_%s\n\n%s\n\n.. END_%s\n' % (tag, contents, tag) |
| 18 | pattern = r'\n\.\. START_%s\n.*\n\.\. END_%s\n' % (tag, tag) |
| 19 | return re.sub(pattern, '%s', text, flags=re.S) % replacement |
| 20 | |
| 21 | def doxygen2rst(text): |
| 22 | text = re.sub(r'<tt>\s*(.*?)\s*<\/tt>', r'``\1``', text) |
| 23 | text = re.sub(r'\\c ([^ ,;\.]+)', r'``\1``', text) |
| 24 | text = re.sub(r'\\\w+ ', '', text) |
| 25 | return text |
| 26 | |
| 27 | def indent(text, columns, indent_first_line=True): |
| 28 | indent = ' ' * columns |
| 29 | s = re.sub(r'\n([^\n])', '\n' + indent + '\\1', text, flags=re.S) |
| 30 | if not indent_first_line or s.startswith('\n'): |
| 31 | return s |
| 32 | return indent + s |
| 33 | |
| 34 | class Option(object): |
| 35 | def __init__(self, name, type, comment): |
| 36 | self.name = name |
| 37 | self.type = type |
| 38 | self.comment = comment.strip() |
| 39 | self.enum = None |
| 40 | self.nested_struct = None |
| 41 | |
| 42 | def __str__(self): |
| 43 | s = '**%s** (``%s``)\n%s' % (self.name, self.type, |
| 44 | doxygen2rst(indent(self.comment, 2))) |
| 45 | if self.enum: |
| 46 | s += indent('\n\nPossible values:\n\n%s\n' % self.enum, 2) |
| 47 | if self.nested_struct: |
| 48 | s += indent('\n\nNested configuration flags:\n\n%s\n' %self.nested_struct, |
| 49 | 2) |
| 50 | return s |
| 51 | |
| 52 | class NestedStruct(object): |
| 53 | def __init__(self, name, comment): |
| 54 | self.name = name |
| 55 | self.comment = comment.strip() |
| 56 | self.values = [] |
| 57 | |
| 58 | def __str__(self): |
| 59 | return '\n'.join(map(str, self.values)) |
| 60 | |
| 61 | class NestedField(object): |
| 62 | def __init__(self, name, comment): |
| 63 | self.name = name |
| 64 | self.comment = comment.strip() |
| 65 | |
| 66 | def __str__(self): |
| 67 | return '\n* ``%s`` %s' % ( |
| 68 | self.name, |
| 69 | doxygen2rst(indent(self.comment, 2, indent_first_line=False))) |
| 70 | |
| 71 | class Enum(object): |
| 72 | def __init__(self, name, comment): |
| 73 | self.name = name |
| 74 | self.comment = comment.strip() |
| 75 | self.values = [] |
| 76 | |
| 77 | def __str__(self): |
| 78 | return '\n'.join(map(str, self.values)) |
| 79 | |
| 80 | class EnumValue(object): |
| 81 | def __init__(self, name, comment): |
| 82 | self.name = name |
| 83 | self.comment = comment |
| 84 | |
| 85 | def __str__(self): |
| 86 | return '* ``%s`` (in configuration: ``%s``)\n%s' % ( |
| 87 | self.name, |
| 88 | re.sub('.*_', '', self.name), |
| 89 | doxygen2rst(indent(self.comment, 2))) |
| 90 | |
| 91 | def clean_comment_line(line): |
| 92 | match = re.match(r'^/// \\code(\{.(\w+)\})?$', line) |
| 93 | if match: |
| 94 | lang = match.groups()[1] |
| 95 | if not lang: |
| 96 | lang = 'c++' |
| 97 | return '\n.. code-block:: %s\n\n' % lang |
| 98 | if line == '/// \\endcode': |
| 99 | return '' |
| 100 | return line[4:] + '\n' |
| 101 | |
| 102 | def read_options(header): |
| 103 | class State(object): |
| 104 | BeforeStruct, Finished, InStruct, InNestedStruct, InNestedFieldComent, \ |
| 105 | InFieldComment, InEnum, InEnumMemberComment = range(8) |
| 106 | state = State.BeforeStruct |
| 107 | |
| 108 | options = [] |
| 109 | enums = {} |
| 110 | nested_structs = {} |
| 111 | comment = '' |
| 112 | enum = None |
| 113 | nested_struct = None |
| 114 | |
| 115 | for line in header: |
| 116 | line = line.strip() |
| 117 | if state == State.BeforeStruct: |
| 118 | if line == 'struct FormatStyle {' or line == 'struct IncludeStyle {': |
| 119 | state = State.InStruct |
| 120 | elif state == State.InStruct: |
| 121 | if line.startswith('///'): |
| 122 | state = State.InFieldComment |
| 123 | comment = clean_comment_line(line) |
| 124 | elif line == '};': |
| 125 | state = State.Finished |
| 126 | break |
| 127 | elif state == State.InFieldComment: |
| 128 | if line.startswith('///'): |
| 129 | comment += clean_comment_line(line) |
| 130 | elif line.startswith('enum'): |
| 131 | state = State.InEnum |
| 132 | name = re.sub(r'enum\s+(\w+)\s*\{', '\\1', line) |
| 133 | enum = Enum(name, comment) |
| 134 | elif line.startswith('struct'): |
| 135 | state = State.InNestedStruct |
| 136 | name = re.sub(r'struct\s+(\w+)\s*\{', '\\1', line) |
| 137 | nested_struct = NestedStruct(name, comment) |
| 138 | elif line.endswith(';'): |
| 139 | state = State.InStruct |
| 140 | field_type, field_name = re.match(r'([<>:\w(,\s)]+)\s+(\w+);', |
| 141 | line).groups() |
| 142 | option = Option(str(field_name), str(field_type), comment) |
| 143 | options.append(option) |
| 144 | else: |
| 145 | raise Exception('Invalid format, expected comment, field or enum') |
| 146 | elif state == State.InNestedStruct: |
| 147 | if line.startswith('///'): |
| 148 | state = State.InNestedFieldComent |
| 149 | comment = clean_comment_line(line) |
| 150 | elif line == '};': |
| 151 | state = State.InStruct |
| 152 | nested_structs[nested_struct.name] = nested_struct |
| 153 | elif state == State.InNestedFieldComent: |
| 154 | if line.startswith('///'): |
| 155 | comment += clean_comment_line(line) |
| 156 | else: |
| 157 | state = State.InNestedStruct |
| 158 | nested_struct.values.append(NestedField(line.replace(';', ''), comment)) |
| 159 | elif state == State.InEnum: |
| 160 | if line.startswith('///'): |
| 161 | state = State.InEnumMemberComment |
| 162 | comment = clean_comment_line(line) |
| 163 | elif line == '};': |
| 164 | state = State.InStruct |
| 165 | enums[enum.name] = enum |
| 166 | else: |
| 167 | raise Exception('Invalid format, expected enum field comment or };') |
| 168 | elif state == State.InEnumMemberComment: |
| 169 | if line.startswith('///'): |
| 170 | comment += clean_comment_line(line) |
| 171 | else: |
| 172 | state = State.InEnum |
| 173 | enum.values.append(EnumValue(line.replace(',', ''), comment)) |
| 174 | if state != State.Finished: |
| 175 | raise Exception('Not finished by the end of file') |
| 176 | |
| 177 | for option in options: |
| 178 | if not option.type in ['bool', 'unsigned', 'int', 'std::string', |
| 179 | 'std::vector<std::string>', |
| 180 | 'std::vector<IncludeCategory>', |
| 181 | 'std::vector<RawStringFormat>']: |
| 182 | if option.type in enums: |
| 183 | option.enum = enums[option.type] |
| 184 | elif option.type in nested_structs: |
| 185 | option.nested_struct = nested_structs[option.type] |
| 186 | else: |
| 187 | raise Exception('Unknown type: %s' % option.type) |
| 188 | return options |
| 189 | |
| 190 | options = read_options(open(FORMAT_STYLE_FILE)) |
| 191 | options += read_options(open(INCLUDE_STYLE_FILE)) |
| 192 | |
| 193 | options = sorted(options, key=lambda x: x.name) |
| 194 | options_text = '\n\n'.join(map(str, options)) |
| 195 | |
| 196 | contents = open(DOC_FILE).read() |
| 197 | |
| 198 | contents = substitute(contents, 'FORMAT_STYLE_OPTIONS', options_text) |
| 199 | |
| 200 | with open(DOC_FILE, 'wb') as output: |
| 201 | output.write(contents) |
| 202 | |