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310 lines
8.5 KiB
310 lines
8.5 KiB
4 weeks ago
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/**
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* @param {string} value
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* @returns {RegExp}
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* */
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/**
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* @param {RegExp | string } re
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* @returns {string}
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*/
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function source(re) {
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if (!re) return null;
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if (typeof re === "string") return re;
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return re.source;
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}
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/**
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* @param {RegExp | string } re
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* @returns {string}
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*/
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function optional(re) {
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return concat('(', re, ')?');
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}
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/**
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* @param {...(RegExp | string) } args
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* @returns {string}
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*/
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function concat(...args) {
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const joined = args.map((x) => source(x)).join("");
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return joined;
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}
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/*
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Language: C
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Category: common, system
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Website: https://en.wikipedia.org/wiki/C_(programming_language)
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*/
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/** @type LanguageFn */
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function c(hljs) {
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// added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
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// not include such support nor can we be sure all the grammars depending
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// on it would desire this behavior
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const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', {
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contains: [
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{
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begin: /\\\n/
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}
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]
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});
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const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
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const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
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const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
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const FUNCTION_TYPE_RE = '(' +
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DECLTYPE_AUTO_RE + '|' +
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optional(NAMESPACE_RE) +
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'[a-zA-Z_]\\w*' + optional(TEMPLATE_ARGUMENT_RE) +
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')';
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const CPP_PRIMITIVE_TYPES = {
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className: 'keyword',
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begin: '\\b[a-z\\d_]*_t\\b'
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};
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// https://en.cppreference.com/w/cpp/language/escape
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// \\ \x \xFF \u2837 \u00323747 \374
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const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
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const STRINGS = {
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className: 'string',
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variants: [
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{
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begin: '(u8?|U|L)?"',
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end: '"',
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illegal: '\\n',
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contains: [ hljs.BACKSLASH_ESCAPE ]
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},
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{
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begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + "|.)",
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end: '\'',
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illegal: '.'
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},
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hljs.END_SAME_AS_BEGIN({
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begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
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end: /\)([^()\\ ]{0,16})"/
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})
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]
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};
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const NUMBERS = {
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className: 'number',
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variants: [
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{
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begin: '\\b(0b[01\']+)'
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},
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{
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begin: '(-?)\\b([\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)((ll|LL|l|L)(u|U)?|(u|U)(ll|LL|l|L)?|f|F|b|B)'
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},
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{
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begin: '(-?)(\\b0[xX][a-fA-F0-9\']+|(\\b[\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)([eE][-+]?[\\d\']+)?)'
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}
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],
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relevance: 0
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};
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const PREPROCESSOR = {
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className: 'meta',
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begin: /#\s*[a-z]+\b/,
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end: /$/,
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keywords: {
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'meta-keyword':
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'if else elif endif define undef warning error line ' +
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'pragma _Pragma ifdef ifndef include'
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},
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contains: [
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{
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begin: /\\\n/,
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relevance: 0
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},
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hljs.inherit(STRINGS, {
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className: 'meta-string'
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}),
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{
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className: 'meta-string',
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begin: /<.*?>/
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},
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C_LINE_COMMENT_MODE,
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hljs.C_BLOCK_COMMENT_MODE
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]
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};
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const TITLE_MODE = {
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className: 'title',
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begin: optional(NAMESPACE_RE) + hljs.IDENT_RE,
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relevance: 0
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};
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const FUNCTION_TITLE = optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';
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const CPP_KEYWORDS = {
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keyword: 'int float while private char char8_t char16_t char32_t catch import module export virtual operator sizeof ' +
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'dynamic_cast|10 typedef const_cast|10 const for static_cast|10 union namespace ' +
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'unsigned long volatile static protected bool template mutable if public friend ' +
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'do goto auto void enum else break extern using asm case typeid wchar_t ' +
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'short reinterpret_cast|10 default double register explicit signed typename try this ' +
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'switch continue inline delete alignas alignof constexpr consteval constinit decltype ' +
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'concept co_await co_return co_yield requires ' +
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'noexcept static_assert thread_local restrict final override ' +
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'atomic_bool atomic_char atomic_schar ' +
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'atomic_uchar atomic_short atomic_ushort atomic_int atomic_uint atomic_long atomic_ulong atomic_llong ' +
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'atomic_ullong new throw return ' +
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'and and_eq bitand bitor compl not not_eq or or_eq xor xor_eq',
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built_in: 'std string wstring cin cout cerr clog stdin stdout stderr stringstream istringstream ostringstream ' +
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'auto_ptr deque list queue stack vector map set pair bitset multiset multimap unordered_set ' +
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'unordered_map unordered_multiset unordered_multimap priority_queue make_pair array shared_ptr abort terminate abs acos ' +
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'asin atan2 atan calloc ceil cosh cos exit exp fabs floor fmod fprintf fputs free frexp ' +
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'fscanf future isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper ' +
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'isxdigit tolower toupper labs ldexp log10 log malloc realloc memchr memcmp memcpy memset modf pow ' +
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'printf putchar puts scanf sinh sin snprintf sprintf sqrt sscanf strcat strchr strcmp ' +
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'strcpy strcspn strlen strncat strncmp strncpy strpbrk strrchr strspn strstr tanh tan ' +
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'vfprintf vprintf vsprintf endl initializer_list unique_ptr _Bool complex _Complex imaginary _Imaginary',
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literal: 'true false nullptr NULL'
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};
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const EXPRESSION_CONTAINS = [
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PREPROCESSOR,
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CPP_PRIMITIVE_TYPES,
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C_LINE_COMMENT_MODE,
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hljs.C_BLOCK_COMMENT_MODE,
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NUMBERS,
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STRINGS
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];
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const EXPRESSION_CONTEXT = {
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// This mode covers expression context where we can't expect a function
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// definition and shouldn't highlight anything that looks like one:
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// `return some()`, `else if()`, `(x*sum(1, 2))`
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variants: [
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{
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begin: /=/,
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end: /;/
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},
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{
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begin: /\(/,
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end: /\)/
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},
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{
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beginKeywords: 'new throw return else',
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end: /;/
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}
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],
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keywords: CPP_KEYWORDS,
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contains: EXPRESSION_CONTAINS.concat([
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{
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begin: /\(/,
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end: /\)/,
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keywords: CPP_KEYWORDS,
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contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
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relevance: 0
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}
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]),
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relevance: 0
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};
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const FUNCTION_DECLARATION = {
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className: 'function',
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begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
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returnBegin: true,
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end: /[{;=]/,
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excludeEnd: true,
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keywords: CPP_KEYWORDS,
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illegal: /[^\w\s\*&:<>.]/,
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contains: [
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{ // to prevent it from being confused as the function title
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begin: DECLTYPE_AUTO_RE,
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keywords: CPP_KEYWORDS,
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relevance: 0
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},
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{
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begin: FUNCTION_TITLE,
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returnBegin: true,
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contains: [ TITLE_MODE ],
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relevance: 0
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},
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{
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className: 'params',
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begin: /\(/,
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end: /\)/,
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keywords: CPP_KEYWORDS,
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relevance: 0,
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contains: [
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C_LINE_COMMENT_MODE,
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hljs.C_BLOCK_COMMENT_MODE,
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STRINGS,
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NUMBERS,
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CPP_PRIMITIVE_TYPES,
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// Count matching parentheses.
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{
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begin: /\(/,
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end: /\)/,
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keywords: CPP_KEYWORDS,
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relevance: 0,
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contains: [
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'self',
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C_LINE_COMMENT_MODE,
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hljs.C_BLOCK_COMMENT_MODE,
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STRINGS,
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NUMBERS,
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CPP_PRIMITIVE_TYPES
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]
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}
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]
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},
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CPP_PRIMITIVE_TYPES,
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C_LINE_COMMENT_MODE,
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hljs.C_BLOCK_COMMENT_MODE,
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PREPROCESSOR
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]
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};
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return {
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name: "C",
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aliases: [
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'h'
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],
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keywords: CPP_KEYWORDS,
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// Until differentiations are added between `c` and `cpp`, `c` will
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// not be auto-detected to avoid auto-detect conflicts between C and C++
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disableAutodetect: true,
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illegal: '</',
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contains: [].concat(
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EXPRESSION_CONTEXT,
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FUNCTION_DECLARATION,
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EXPRESSION_CONTAINS,
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[
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PREPROCESSOR,
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{ // containers: ie, `vector <int> rooms (9);`
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begin: '\\b(deque|list|queue|priority_queue|pair|stack|vector|map|set|bitset|multiset|multimap|unordered_map|unordered_set|unordered_multiset|unordered_multimap|array)\\s*<',
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end: '>',
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keywords: CPP_KEYWORDS,
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contains: [
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'self',
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CPP_PRIMITIVE_TYPES
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]
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||
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},
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{
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||
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begin: hljs.IDENT_RE + '::',
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keywords: CPP_KEYWORDS
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},
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{
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className: 'class',
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beginKeywords: 'enum class struct union',
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end: /[{;:<>=]/,
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||
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contains: [
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{
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beginKeywords: "final class struct"
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},
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hljs.TITLE_MODE
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]
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}
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]),
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exports: {
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preprocessor: PREPROCESSOR,
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strings: STRINGS,
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keywords: CPP_KEYWORDS
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}
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||
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};
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}
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module.exports = c;
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