465 lines
10 KiB
JavaScript
465 lines
10 KiB
JavaScript
/**
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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 lookahead(re) {
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return concat('(?=', re, ')');
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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://isocpp.org
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*/
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/** @type LanguageFn */
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function cpp(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 COMMON_CPP_HINTS = [
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'asin',
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'atan2',
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'atan',
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'calloc',
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'ceil',
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'cosh',
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'cos',
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'exit',
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'exp',
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'fabs',
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'floor',
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'fmod',
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'fprintf',
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'fputs',
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'free',
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'frexp',
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'auto_ptr',
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'deque',
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'list',
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'queue',
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'stack',
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'vector',
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'map',
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'set',
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'pair',
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'bitset',
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'multiset',
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'multimap',
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'unordered_set',
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'fscanf',
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'future',
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'isalnum',
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'isalpha',
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'iscntrl',
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'isdigit',
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'isgraph',
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'islower',
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'isprint',
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'ispunct',
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'isspace',
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'isupper',
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'isxdigit',
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'tolower',
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'toupper',
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'labs',
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'ldexp',
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'log10',
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'log',
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'malloc',
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'realloc',
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'memchr',
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'memcmp',
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'memcpy',
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'memset',
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'modf',
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'pow',
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'printf',
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'putchar',
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'puts',
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'scanf',
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'sinh',
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'sin',
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'snprintf',
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'sprintf',
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'sqrt',
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'sscanf',
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'strcat',
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'strchr',
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'strcmp',
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'strcpy',
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'strcspn',
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'strlen',
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'strncat',
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'strncmp',
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'strncpy',
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'strpbrk',
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'strrchr',
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'strspn',
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'strstr',
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'tanh',
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'tan',
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'unordered_map',
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'unordered_multiset',
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'unordered_multimap',
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'priority_queue',
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'make_pair',
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'array',
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'shared_ptr',
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'abort',
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'terminate',
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'abs',
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'acos',
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'vfprintf',
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'vprintf',
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'vsprintf',
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'endl',
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'initializer_list',
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'unique_ptr',
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'complex',
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'imaginary',
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'std',
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'string',
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'wstring',
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'cin',
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'cout',
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'cerr',
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'clog',
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'stdin',
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'stdout',
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'stderr',
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'stringstream',
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'istringstream',
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'ostringstream'
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];
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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: '_Bool _Complex _Imaginary',
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_relevance_hints: COMMON_CPP_HINTS,
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literal: 'true false nullptr NULL'
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};
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const FUNCTION_DISPATCH = {
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className: "function.dispatch",
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relevance: 0,
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keywords: CPP_KEYWORDS,
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begin: concat(
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/\b/,
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/(?!decltype)/,
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/(?!if)/,
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/(?!for)/,
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/(?!while)/,
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hljs.IDENT_RE,
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lookahead(/\s*\(/))
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};
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const EXPRESSION_CONTAINS = [
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FUNCTION_DISPATCH,
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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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// needed because we do not have look-behind on the below rule
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// to prevent it from grabbing the final : in a :: pair
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{
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begin: /::/,
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relevance: 0
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},
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// initializers
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{
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begin: /:/,
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endsWithParent: true,
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contains: [
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STRINGS,
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NUMBERS
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]
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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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'cc',
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'c++',
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'h++',
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'hpp',
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'hh',
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'hxx',
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'cxx'
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],
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keywords: CPP_KEYWORDS,
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illegal: '</',
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classNameAliases: {
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"function.dispatch": "built_in"
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},
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contains: [].concat(
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EXPRESSION_CONTEXT,
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FUNCTION_DECLARATION,
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FUNCTION_DISPATCH,
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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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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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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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module.exports = cpp;
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