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254 lines
10 KiB
254 lines
10 KiB
1 week ago
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# -*- coding: utf-8 -*-
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"""
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pygments.lexers.c_cpp
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~~~~~~~~~~~~~~~~~~~~~
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Lexers for C/C++ languages.
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:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import RegexLexer, include, bygroups, using, \
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this, inherit, default, words
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from pygments.util import get_bool_opt
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Error
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__all__ = ['CLexer', 'CppLexer']
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class CFamilyLexer(RegexLexer):
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"""
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For C family source code. This is used as a base class to avoid repetitious
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definitions.
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"""
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#: optional Comment or Whitespace
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_ws = r'(?:\s|//.*?\n|/[*].*?[*]/)+'
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# The trailing ?, rather than *, avoids a geometric performance drop here.
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#: only one /* */ style comment
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_ws1 = r'\s*(?:/[*].*?[*]/\s*)?'
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tokens = {
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'whitespace': [
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# preprocessor directives: without whitespace
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(r'^#if\s+0', Comment.Preproc, 'if0'),
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('^#', Comment.Preproc, 'macro'),
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# or with whitespace
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('^(' + _ws1 + r')(#if\s+0)',
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bygroups(using(this), Comment.Preproc), 'if0'),
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('^(' + _ws1 + ')(#)',
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bygroups(using(this), Comment.Preproc), 'macro'),
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(r'\n', Text),
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(r'\s+', Text),
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(r'\\\n', Text), # line continuation
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(r'//(\n|[\w\W]*?[^\\]\n)', Comment.Single),
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(r'/(\\\n)?[*][\w\W]*?[*](\\\n)?/', Comment.Multiline),
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# Open until EOF, so no ending delimeter
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(r'/(\\\n)?[*][\w\W]*', Comment.Multiline),
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],
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'statements': [
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(r'(L?)(")', bygroups(String.Affix, String), 'string'),
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(r"(L?)(')(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])(')",
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bygroups(String.Affix, String.Char, String.Char, String.Char)),
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(r'(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*', Number.Float),
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(r'(\d+\.\d*|\.\d+|\d+[fF])[fF]?', Number.Float),
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(r'0x[0-9a-fA-F]+[LlUu]*', Number.Hex),
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(r'0[0-7]+[LlUu]*', Number.Oct),
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(r'\d+[LlUu]*', Number.Integer),
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(r'\*/', Error),
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(r'[~!%^&*+=|?:<>/-]', Operator),
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(r'[()\[\],.]', Punctuation),
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(words(('asm', 'auto', 'break', 'case', 'const', 'continue',
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'default', 'do', 'else', 'enum', 'extern', 'for', 'goto',
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'if', 'register', 'restricted', 'return', 'sizeof',
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'static', 'struct', 'switch', 'typedef', 'union',
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'volatile', 'while'),
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suffix=r'\b'), Keyword),
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(r'(bool|int|long|float|short|double|char|unsigned|signed|void)\b',
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Keyword.Type),
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(words(('inline', '_inline', '__inline', 'naked', 'restrict',
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'thread', 'typename'), suffix=r'\b'), Keyword.Reserved),
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# Vector intrinsics
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(r'(__m(128i|128d|128|64))\b', Keyword.Reserved),
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# Microsoft-isms
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(words((
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'asm', 'int8', 'based', 'except', 'int16', 'stdcall', 'cdecl',
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'fastcall', 'int32', 'declspec', 'finally', 'int64', 'try',
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'leave', 'wchar_t', 'w64', 'unaligned', 'raise', 'noop',
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'identifier', 'forceinline', 'assume'),
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prefix=r'__', suffix=r'\b'), Keyword.Reserved),
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(r'(true|false|NULL)\b', Name.Builtin),
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(r'([a-zA-Z_]\w*)(\s*)(:)(?!:)', bygroups(Name.Label, Text, Punctuation)),
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(r'[a-zA-Z_]\w*', Name),
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],
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'root': [
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include('whitespace'),
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# functions
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(r'((?:[\w*\s])+?(?:\s|[*]))' # return arguments
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r'([a-zA-Z_]\w*)' # method name
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r'(\s*\([^;]*?\))' # signature
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r'([^;{]*)(\{)',
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bygroups(using(this), Name.Function, using(this), using(this),
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Punctuation),
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'function'),
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# function declarations
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(r'((?:[\w*\s])+?(?:\s|[*]))' # return arguments
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r'([a-zA-Z_]\w*)' # method name
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r'(\s*\([^;]*?\))' # signature
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r'([^;]*)(;)',
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bygroups(using(this), Name.Function, using(this), using(this),
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Punctuation)),
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default('statement'),
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],
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'statement': [
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include('whitespace'),
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include('statements'),
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('[{}]', Punctuation),
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(';', Punctuation, '#pop'),
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],
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'function': [
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include('whitespace'),
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include('statements'),
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(';', Punctuation),
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(r'\{', Punctuation, '#push'),
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(r'\}', Punctuation, '#pop'),
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],
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'string': [
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(r'"', String, '#pop'),
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(r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|'
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r'u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|[0-7]{1,3})', String.Escape),
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(r'[^\\"\n]+', String), # all other characters
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(r'\\\n', String), # line continuation
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(r'\\', String), # stray backslash
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],
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'macro': [
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(r'(include)(' + _ws1 + r')([^\n]+)',
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bygroups(Comment.Preproc, Text, Comment.PreprocFile)),
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(r'[^/\n]+', Comment.Preproc),
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(r'/[*](.|\n)*?[*]/', Comment.Multiline),
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(r'//.*?\n', Comment.Single, '#pop'),
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(r'/', Comment.Preproc),
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(r'(?<=\\)\n', Comment.Preproc),
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(r'\n', Comment.Preproc, '#pop'),
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],
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'if0': [
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(r'^\s*#if.*?(?<!\\)\n', Comment.Preproc, '#push'),
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(r'^\s*#el(?:se|if).*\n', Comment.Preproc, '#pop'),
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(r'^\s*#endif.*?(?<!\\)\n', Comment.Preproc, '#pop'),
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(r'.*?\n', Comment),
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]
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}
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stdlib_types = {
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'size_t', 'ssize_t', 'off_t', 'wchar_t', 'ptrdiff_t', 'sig_atomic_t', 'fpos_t',
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'clock_t', 'time_t', 'va_list', 'jmp_buf', 'FILE', 'DIR', 'div_t', 'ldiv_t',
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'mbstate_t', 'wctrans_t', 'wint_t', 'wctype_t'}
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c99_types = {
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'_Bool', '_Complex', 'int8_t', 'int16_t', 'int32_t', 'int64_t', 'uint8_t',
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'uint16_t', 'uint32_t', 'uint64_t', 'int_least8_t', 'int_least16_t',
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'int_least32_t', 'int_least64_t', 'uint_least8_t', 'uint_least16_t',
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'uint_least32_t', 'uint_least64_t', 'int_fast8_t', 'int_fast16_t', 'int_fast32_t',
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'int_fast64_t', 'uint_fast8_t', 'uint_fast16_t', 'uint_fast32_t', 'uint_fast64_t',
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'intptr_t', 'uintptr_t', 'intmax_t', 'uintmax_t'}
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linux_types = {
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'clockid_t', 'cpu_set_t', 'cpumask_t', 'dev_t', 'gid_t', 'id_t', 'ino_t', 'key_t',
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'mode_t', 'nfds_t', 'pid_t', 'rlim_t', 'sig_t', 'sighandler_t', 'siginfo_t',
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'sigset_t', 'sigval_t', 'socklen_t', 'timer_t', 'uid_t'}
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def __init__(self, **options):
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self.stdlibhighlighting = get_bool_opt(options, 'stdlibhighlighting', True)
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self.c99highlighting = get_bool_opt(options, 'c99highlighting', True)
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self.platformhighlighting = get_bool_opt(options, 'platformhighlighting', True)
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RegexLexer.__init__(self, **options)
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def get_tokens_unprocessed(self, text):
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for index, token, value in \
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RegexLexer.get_tokens_unprocessed(self, text):
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if token is Name:
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if self.stdlibhighlighting and value in self.stdlib_types:
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token = Keyword.Type
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elif self.c99highlighting and value in self.c99_types:
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token = Keyword.Type
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elif self.platformhighlighting and value in self.linux_types:
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token = Keyword.Type
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yield index, token, value
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class CLexer(CFamilyLexer):
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"""
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For C source code with preprocessor directives.
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"""
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name = 'C'
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aliases = ['c']
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filenames = ['*.c', '*.h', '*.idc']
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mimetypes = ['text/x-chdr', 'text/x-csrc']
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priority = 0.1
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def analyse_text(text):
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if re.search(r'^\s*#include [<"]', text, re.MULTILINE):
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return 0.1
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if re.search(r'^\s*#ifn?def ', text, re.MULTILINE):
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return 0.1
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class CppLexer(CFamilyLexer):
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"""
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For C++ source code with preprocessor directives.
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"""
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name = 'C++'
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aliases = ['cpp', 'c++']
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filenames = ['*.cpp', '*.hpp', '*.c++', '*.h++',
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'*.cc', '*.hh', '*.cxx', '*.hxx',
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'*.C', '*.H', '*.cp', '*.CPP']
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mimetypes = ['text/x-c++hdr', 'text/x-c++src']
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priority = 0.1
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tokens = {
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'statements': [
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(words((
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'catch', 'const_cast', 'delete', 'dynamic_cast', 'explicit',
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'export', 'friend', 'mutable', 'namespace', 'new', 'operator',
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'private', 'protected', 'public', 'reinterpret_cast',
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'restrict', 'static_cast', 'template', 'this', 'throw', 'throws',
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'try', 'typeid', 'typename', 'using', 'virtual',
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'constexpr', 'nullptr', 'decltype', 'thread_local',
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'alignas', 'alignof', 'static_assert', 'noexcept', 'override',
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'final', 'constinit', 'consteval', 'concept', 'co_await',
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'co_return', 'co_yield', 'requires', 'import', 'module'), suffix=r'\b'), Keyword),
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(r'char(16_t|32_t|8_t)\b', Keyword.Type),
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(r'(class)(\s+)', bygroups(Keyword, Text), 'classname'),
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# C++11 raw strings
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(r'(R)(")([^\\()\s]{,16})(\()((?:.|\n)*?)(\)\3)(")',
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bygroups(String.Affix, String, String.Delimiter, String.Delimiter,
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String, String.Delimiter, String)),
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# C++11 UTF-8/16/32 strings
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(r'(u8|u|U)(")', bygroups(String.Affix, String), 'string'),
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inherit,
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],
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'root': [
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inherit,
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# C++ Microsoft-isms
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(words(('virtual_inheritance', 'uuidof', 'super', 'single_inheritance',
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'multiple_inheritance', 'interface', 'event'),
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prefix=r'__', suffix=r'\b'), Keyword.Reserved),
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# Offload C++ extensions, http://offload.codeplay.com/
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(r'__(offload|blockingoffload|outer)\b', Keyword.Pseudo),
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],
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'classname': [
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(r'[a-zA-Z_]\w*', Name.Class, '#pop'),
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# template specification
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(r'\s*(?=>)', Text, '#pop'),
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],
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}
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def analyse_text(text):
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if re.search('#include <[a-z_]+>', text):
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return 0.2
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if re.search('using namespace ', text):
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return 0.4
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