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""" pygments.lexers.c_cpp ~~~~~~~~~~~~~~~~~~~~~ Lexers for C/C++ languages. :copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ import re from pygments.lexer import RegexLexer, include, bygroups, using, \ this, inherit, default, words from pygments.util import get_bool_opt from pygments.token import Text, Comment, Operator, Keyword, Name, String, \ Number, Punctuation, Whitespace __all__ = ['CLexer', 'CppLexer'] class CFamilyLexer(RegexLexer): """ For C family source code. This is used as a base class to avoid repetitious definitions. """ # The trailing ?, rather than *, avoids a geometric performance drop here. #: only one /* */ style comment _ws1 = r'\s*(?:/[*].*?[*]/\s*)?' # Hexadecimal part in an hexadecimal integer/floating-point literal. # This includes decimal separators matching. _hexpart = r'[0-9a-fA-F](\'?[0-9a-fA-F])*' # Decimal part in an decimal integer/floating-point literal. # This includes decimal separators matching. _decpart = r'\d(\'?\d)*' # Integer literal suffix (e.g. 'ull' or 'll'). _intsuffix = r'(([uU][lL]{0,2})|[lL]{1,2}[uU]?)?' # Identifier regex with C and C++ Universal Character Name (UCN) support. _ident = r'(?!\d)(?:[\w$]|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8})+' _namespaced_ident = r'(?!\d)(?:[\w$]|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|::)+' # Single and multiline comment regexes # Beware not to use *? for the inner content! When these regexes # are embedded in larger regexes, that can cause the stuff*? to # match more than it would have if the regex had been used in # a standalone way ... _comment_single = r'//(?:.|(?<=\\)\n)*\n' _comment_multiline = r'/(?:\\\n)?[*](?:[^*]|[*](?!(?:\\\n)?/))*[*](?:\\\n)?/' # Regex to match optional comments _possible_comments = rf'\s*(?:(?:(?:{_comment_single})|(?:{_comment_multiline}))\s*)*' tokens = { 'whitespace': [ # preprocessor directives: without whitespace (r'^#if\s+0', Comment.Preproc, 'if0'), ('^#', Comment.Preproc, 'macro'), # or with whitespace ('^(' + _ws1 + r')(#if\s+0)', bygroups(using(this), Comment.Preproc), 'if0'), ('^(' + _ws1 + ')(#)', bygroups(using(this), Comment.Preproc), 'macro'), # Labels: # Line start and possible indentation. (r'(^[ \t]*)' # Not followed by keywords which can be mistaken as labels. r'(?!(?:public|private|protected|default)\b)' # Actual label, followed by a single colon. r'(' + _ident + r')(\s*)(:)(?!:)', bygroups(Whitespace, Name.Label, Whitespace, Punctuation)), (r'\n', Whitespace), (r'[^\S\n]+', Whitespace), (r'\\\n', Text), # line continuation (_comment_single, Comment.Single), (_comment_multiline, Comment.Multiline), # Open until EOF, so no ending delimiter (r'/(\\\n)?[*][\w\W]*', Comment.Multiline), ], 'statements': [ include('keywords'), include('types'), (r'([LuU]|u8)?(")', bygroups(String.Affix, String), 'string'), (r"([LuU]|u8)?(')(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])(')", bygroups(String.Affix, String.Char, String.Char, String.Char)), # Hexadecimal floating-point literals (C11, C++17) (r'0[xX](' + _hexpart + r'\.' + _hexpart + r'|\.' + _hexpart + r'|' + _hexpart + r')[pP][+-]?' + _hexpart + r'[lL]?', Number.Float), (r'(-)?(' + _decpart + r'\.' + _decpart + r'|\.' + _decpart + r'|' + _decpart + r')[eE][+-]?' + _decpart + r'[fFlL]?', Number.Float), (r'(-)?((' + _decpart + r'\.(' + _decpart + r')?|\.' + _decpart + r')[fFlL]?)|(' + _decpart + r'[fFlL])', Number.Float), (r'(-)?0[xX]' + _hexpart + _intsuffix, Number.Hex), (r'(-)?0[bB][01](\'?[01])*' + _intsuffix, Number.Bin), (r'(-)?0(\'?[0-7])+' + _intsuffix, Number.Oct), (r'(-)?' + _decpart + _intsuffix, Number.Integer), (r'[~!%^&*+=|?:<>/-]', Operator), (r'[()\[\],.]', Punctuation), (r'(true|false|NULL)\b', Name.Builtin), (_ident, Name) ], 'types': [ (words(('int8', 'int16', 'int32', 'int64', 'wchar_t'), prefix=r'__', suffix=r'\b'), Keyword.Reserved), (words(('bool', 'int', 'long', 'float', 'short', 'double', 'char', 'unsigned', 'signed', 'void'), suffix=r'\b'), Keyword.Type) ], 'keywords': [ (r'(struct|union)(\s+)', bygroups(Keyword, Whitespace), 'classname'), (r'case\b', Keyword, 'case-value'), (words(('asm', 'auto', 'break', 'const', 'continue', 'default', 'do', 'else', 'enum', 'extern', 'for', 'goto', 'if', 'register', 'restricted', 'return', 'sizeof', 'struct', 'static', 'switch', 'typedef', 'volatile', 'while', 'union', 'thread_local', 'alignas', 'alignof', 'static_assert', '_Pragma'), suffix=r'\b'), Keyword), (words(('inline', '_inline', '__inline', 'naked', 'restrict', 'thread'), suffix=r'\b'), Keyword.Reserved), # Vector intrinsics (r'(__m(128i|128d|128|64))\b', Keyword.Reserved), # Microsoft-isms (words(( 'asm', 'based', 'except', 'stdcall', 'cdecl', 'fastcall', 'declspec', 'finally', 'try', 'leave', 'w64', 'unaligned', 'raise', 'noop', 'identifier', 'forceinline', 'assume'), prefix=r'__', suffix=r'\b'), Keyword.Reserved) ], 'root': [ include('whitespace'), include('keywords'), # functions (r'(' + _namespaced_ident + r'(?:[&*\s])+)' # return arguments r'(' + _possible_comments + r')' r'(' + _namespaced_ident + r')' # method name r'(' + _possible_comments + r')' r'(\([^;"\')]*?\))' # signature r'(' + _possible_comments + r')' r'([^;{/"\']*)(\{)', bygroups(using(this), using(this, state='whitespace'), Name.Function, using(this, state='whitespace'), using(this), using(this, state='whitespace'), using(this), Punctuation), 'function'), # function declarations (r'(' + _namespaced_ident + r'(?:[&*\s])+)' # return arguments r'(' + _possible_comments + r')' r'(' + _namespaced_ident + r')' # method name r'(' + _possible_comments + r')' r'(\([^;"\')]*?\))' # signature r'(' + _possible_comments + r')' r'([^;/"\']*)(;)', bygroups(using(this), using(this, state='whitespace'), Name.Function, using(this, state='whitespace'), using(this), using(this, state='whitespace'), using(this), Punctuation)), include('types'), default('statement'), ], 'statement': [ include('whitespace'), include('statements'), (r'\}', Punctuation), (r'[{;]', Punctuation, '#pop'), ], 'function': [ include('whitespace'), include('statements'), (';', Punctuation), (r'\{', Punctuation, '#push'), (r'\}', Punctuation, '#pop'), ], 'string': [ (r'"', String, '#pop'), (r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|' r'u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|[0-7]{1,3})', String.Escape), (r'[^\\"\n]+', String), # all other characters (r'\\\n', String), # line continuation (r'\\', String), # stray backslash ], 'macro': [ (r'('+_ws1+r')(include)('+_ws1+r')("[^"]+")([^\n]*)', bygroups(using(this), Comment.Preproc, using(this), Comment.PreprocFile, Comment.Single)), (r'('+_ws1+r')(include)('+_ws1+r')(<[^>]+>)([^\n]*)', bygroups(using(this), Comment.Preproc, using(this), Comment.PreprocFile, Comment.Single)), (r'[^/\n]+', Comment.Preproc), (r'/[*](.|\n)*?[*]/', Comment.Multiline), (r'//.*?\n', Comment.Single, '#pop'), (r'/', Comment.Preproc), (r'(?<=\\)\n', Comment.Preproc), (r'\n', Comment.Preproc, '#pop'), ], 'if0': [ (r'^\s*#if.*?(?<!\\)\n', Comment.Preproc, '#push'), (r'^\s*#el(?:se|if).*\n', Comment.Preproc, '#pop'), (r'^\s*#endif.*?(?<!\\)\n', Comment.Preproc, '#pop'), (r'.*?\n', Comment), ], 'classname': [ (_ident, Name.Class, '#pop'), # template specification (r'\s*(?=>)', Text, '#pop'), default('#pop') ], # Mark identifiers preceded by `case` keyword as constants. 'case-value': [ (r'(?<!:)(:)(?!:)', Punctuation, '#pop'), (_ident, Name.Constant), include('whitespace'), include('statements'), ] } stdlib_types = { 'size_t', 'ssize_t', 'off_t', 'wchar_t', 'ptrdiff_t', 'sig_atomic_t', 'fpos_t', 'clock_t', 'time_t', 'va_list', 'jmp_buf', 'FILE', 'DIR', 'div_t', 'ldiv_t', 'mbstate_t', 'wctrans_t', 'wint_t', 'wctype_t'} c99_types = { 'int8_t', 'int16_t', 'int32_t', 'int64_t', 'uint8_t', 'uint16_t', 'uint32_t', 'uint64_t', 'int_least8_t', 'int_least16_t', 'int_least32_t', 'int_least64_t', 'uint_least8_t', 'uint_least16_t', 'uint_least32_t', 'uint_least64_t', 'int_fast8_t', 'int_fast16_t', 'int_fast32_t', 'int_fast64_t', 'uint_fast8_t', 'uint_fast16_t', 'uint_fast32_t', 'uint_fast64_t', 'intptr_t', 'uintptr_t', 'intmax_t', 'uintmax_t'} linux_types = { 'clockid_t', 'cpu_set_t', 'cpumask_t', 'dev_t', 'gid_t', 'id_t', 'ino_t', 'key_t', 'mode_t', 'nfds_t', 'pid_t', 'rlim_t', 'sig_t', 'sighandler_t', 'siginfo_t', 'sigset_t', 'sigval_t', 'socklen_t', 'timer_t', 'uid_t'} c11_atomic_types = { 'atomic_bool', 'atomic_char', 'atomic_schar', 'atomic_uchar', 'atomic_short', 'atomic_ushort', 'atomic_int', 'atomic_uint', 'atomic_long', 'atomic_ulong', 'atomic_llong', 'atomic_ullong', 'atomic_char16_t', 'atomic_char32_t', 'atomic_wchar_t', 'atomic_int_least8_t', 'atomic_uint_least8_t', 'atomic_int_least16_t', 'atomic_uint_least16_t', 'atomic_int_least32_t', 'atomic_uint_least32_t', 'atomic_int_least64_t', 'atomic_uint_least64_t', 'atomic_int_fast8_t', 'atomic_uint_fast8_t', 'atomic_int_fast16_t', 'atomic_uint_fast16_t', 'atomic_int_fast32_t', 'atomic_uint_fast32_t', 'atomic_int_fast64_t', 'atomic_uint_fast64_t', 'atomic_intptr_t', 'atomic_uintptr_t', 'atomic_size_t', 'atomic_ptrdiff_t', 'atomic_intmax_t', 'atomic_uintmax_t'} def __init__(self, **options): self.stdlibhighlighting = get_bool_opt(options, 'stdlibhighlighting', True) self.c99highlighting = get_bool_opt(options, 'c99highlighting', True) self.c11highlighting = get_bool_opt(options, 'c11highlighting', True) self.platformhighlighting = get_bool_opt(options, 'platformhighlighting', True) RegexLexer.__init__(self, **options) def get_tokens_unprocessed(self, text, stack=('root',)): for index, token, value in \ RegexLexer.get_tokens_unprocessed(self, text, stack): if token is Name: if self.stdlibhighlighting and value in self.stdlib_types: token = Keyword.Type elif self.c99highlighting and value in self.c99_types: token = Keyword.Type elif self.c11highlighting and value in self.c11_atomic_types: token = Keyword.Type elif self.platformhighlighting and value in self.linux_types: token = Keyword.Type yield index, token, value class CLexer(CFamilyLexer): """ For C source code with preprocessor directives. Additional options accepted: `stdlibhighlighting` Highlight common types found in the C/C++ standard library (e.g. `size_t`). (default: ``True``). `c99highlighting` Highlight common types found in the C99 standard library (e.g. `int8_t`). Actually, this includes all fixed-width integer types. (default: ``True``). `c11highlighting` Highlight atomic types found in the C11 standard library (e.g. `atomic_bool`). (default: ``True``). `platformhighlighting` Highlight common types found in the platform SDK headers (e.g. `clockid_t` on Linux). (default: ``True``). """ name = 'C' aliases = ['c'] filenames = ['*.c', '*.h', '*.idc', '*.x[bp]m'] mimetypes = ['text/x-chdr', 'text/x-csrc', 'image/x-xbitmap', 'image/x-xpixmap'] priority = 0.1 tokens = { 'keywords': [ (words(( '_Alignas', '_Alignof', '_Noreturn', '_Generic', '_Thread_local', '_Static_assert', '_Imaginary', 'noreturn', 'imaginary', 'complex'), suffix=r'\b'), Keyword), inherit ], 'types': [ (words(('_Bool', '_Complex', '_Atomic'), suffix=r'\b'), Keyword.Type), inherit ] } def analyse_text(text): if re.search(r'^\s*#include [<"]', text, re.MULTILINE): return 0.1 if re.search(r'^\s*#ifn?def ', text, re.MULTILINE): return 0.1 class CppLexer(CFamilyLexer): """ For C++ source code with preprocessor directives. Additional options accepted: `stdlibhighlighting` Highlight common types found in the C/C++ standard library (e.g. `size_t`). (default: ``True``). `c99highlighting` Highlight common types found in the C99 standard library (e.g. `int8_t`). Actually, this includes all fixed-width integer types. (default: ``True``). `c11highlighting` Highlight atomic types found in the C11 standard library (e.g. `atomic_bool`). (default: ``True``). `platformhighlighting` Highlight common types found in the platform SDK headers (e.g. `clockid_t` on Linux). (default: ``True``). """ name = 'C++' url = 'https://isocpp.org/' aliases = ['cpp', 'c++'] filenames = ['*.cpp', '*.hpp', '*.c++', '*.h++', '*.cc', '*.hh', '*.cxx', '*.hxx', '*.C', '*.H', '*.cp', '*.CPP', '*.tpp'] mimetypes = ['text/x-c++hdr', 'text/x-c++src'] priority = 0.1 tokens = { 'statements': [ # C++11 raw strings (r'((?:[LuU]|u8)?R)(")([^\\()\s]{,16})(\()((?:.|\n)*?)(\)\3)(")', bygroups(String.Affix, String, String.Delimiter, String.Delimiter, String, String.Delimiter, String)), inherit, ], 'root': [ inherit, # C++ Microsoft-isms (words(('virtual_inheritance', 'uuidof', 'super', 'single_inheritance', 'multiple_inheritance', 'interface', 'event'), prefix=r'__', suffix=r'\b'), Keyword.Reserved), # Offload C++ extensions, http://offload.codeplay.com/ (r'__(offload|blockingoffload|outer)\b', Keyword.Pseudo), ], 'enumname': [ include('whitespace'), # 'enum class' and 'enum struct' C++11 support (words(('class', 'struct'), suffix=r'\b'), Keyword), (CFamilyLexer._ident, Name.Class, '#pop'), # template specification (r'\s*(?=>)', Text, '#pop'), default('#pop') ], 'keywords': [ (r'(class|concept|typename)(\s+)', bygroups(Keyword, Whitespace), 'classname'), (words(( 'catch', 'const_cast', 'delete', 'dynamic_cast', 'explicit', 'export', 'friend', 'mutable', 'new', 'operator', 'private', 'protected', 'public', 'reinterpret_cast', 'class', 'restrict', 'static_cast', 'template', 'this', 'throw', 'throws', 'try', 'typeid', 'using', 'virtual', 'constexpr', 'nullptr', 'concept', 'decltype', 'noexcept', 'override', 'final', 'constinit', 'consteval', 'co_await', 'co_return', 'co_yield', 'requires', 'import', 'module', 'typename'), suffix=r'\b'), Keyword), (r'namespace\b', Keyword, 'namespace'), (r'(enum)(\s+)', bygroups(Keyword, Whitespace), 'enumname'), inherit ], 'types': [ (r'char(16_t|32_t|8_t)\b', Keyword.Type), inherit ], 'namespace': [ (r'[;{]', Punctuation, ('#pop', 'root')), (r'inline\b', Keyword.Reserved), (CFamilyLexer._ident, Name.Namespace), include('statement') ] } def analyse_text(text): if re.search('#include <[a-z_]+>', text): return 0.2 if re.search('using namespace ', text): return 0.4