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annotate third_party/highlight/languages/c.js @ 215:c3df85159b31

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removed a python library that isn't used for much.
author June Park <parkjune1995@gmail.com>
date Sat, 28 Feb 2026 20:34:18 -0800
parents 2db6253f355d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
157
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1 /*! `c` grammar compiled for Highlight.js 11.11.1 */
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2 (function(){
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3 var hljsGrammar = (function () {
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4 'use strict';
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5
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6 /*
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7 Language: C
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8 Category: common, system
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9 Website: https://en.wikipedia.org/wiki/C_(programming_language)
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10 */
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11
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12 /** @type LanguageFn */
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13 function c(hljs) {
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14 const regex = hljs.regex;
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15 // added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
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16 // not include such support nor can we be sure all the grammars depending
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17 // on it would desire this behavior
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18 const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', { contains: [ { begin: /\\\n/ } ] });
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19 const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
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20 const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
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21 const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
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22 const FUNCTION_TYPE_RE = '('
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23 + DECLTYPE_AUTO_RE + '|'
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24 + regex.optional(NAMESPACE_RE)
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25 + '[a-zA-Z_]\\w*' + regex.optional(TEMPLATE_ARGUMENT_RE)
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26 + ')';
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27
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28
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29 const TYPES = {
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30 className: 'type',
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31 variants: [
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32 { begin: '\\b[a-z\\d_]*_t\\b' },
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33 { match: /\batomic_[a-z]{3,6}\b/ }
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34 ]
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35
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36 };
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37
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38 // https://en.cppreference.com/w/cpp/language/escape
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39 // \\ \x \xFF \u2837 \u00323747 \374
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40 const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
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41 const STRINGS = {
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42 className: 'string',
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43 variants: [
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44 {
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45 begin: '(u8?|U|L)?"',
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46 end: '"',
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47 illegal: '\\n',
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48 contains: [ hljs.BACKSLASH_ESCAPE ]
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49 },
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50 {
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51 begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + "|.)",
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52 end: '\'',
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53 illegal: '.'
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54 },
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55 hljs.END_SAME_AS_BEGIN({
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56 begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
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57 end: /\)([^()\\ ]{0,16})"/
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58 })
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59 ]
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60 };
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61
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62 const NUMBERS = {
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63 className: 'number',
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64 variants: [
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65 { match: /\b(0b[01']+)/ },
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66 { match: /(-?)\b([\d']+(\.[\d']*)?|\.[\d']+)((ll|LL|l|L)(u|U)?|(u|U)(ll|LL|l|L)?|f|F|b|B)/ },
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67 { match: /(-?)\b(0[xX][a-fA-F0-9]+(?:'[a-fA-F0-9]+)*(?:\.[a-fA-F0-9]*(?:'[a-fA-F0-9]*)*)?(?:[pP][-+]?[0-9]+)?(l|L)?(u|U)?)/ },
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68 { match: /(-?)\b\d+(?:'\d+)*(?:\.\d*(?:'\d*)*)?(?:[eE][-+]?\d+)?/ }
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69 ],
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70 relevance: 0
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71 };
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72
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73 const PREPROCESSOR = {
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74 className: 'meta',
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75 begin: /#\s*[a-z]+\b/,
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76 end: /$/,
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77 keywords: { keyword:
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78 'if else elif endif define undef warning error line '
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79 + 'pragma _Pragma ifdef ifndef elifdef elifndef include' },
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80 contains: [
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81 {
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82 begin: /\\\n/,
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83 relevance: 0
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84 },
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85 hljs.inherit(STRINGS, { className: 'string' }),
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86 {
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87 className: 'string',
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88 begin: /<.*?>/
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89 },
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90 C_LINE_COMMENT_MODE,
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91 hljs.C_BLOCK_COMMENT_MODE
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92 ]
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93 };
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94
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95 const TITLE_MODE = {
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96 className: 'title',
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97 begin: regex.optional(NAMESPACE_RE) + hljs.IDENT_RE,
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98 relevance: 0
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99 };
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100
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101 const FUNCTION_TITLE = regex.optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';
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102
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103 const C_KEYWORDS = [
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104 "asm",
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105 "auto",
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106 "break",
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107 "case",
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108 "continue",
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109 "default",
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110 "do",
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111 "else",
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112 "enum",
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113 "extern",
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114 "for",
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115 "fortran",
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116 "goto",
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117 "if",
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118 "inline",
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119 "register",
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120 "restrict",
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121 "return",
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122 "sizeof",
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123 "typeof",
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124 "typeof_unqual",
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125 "struct",
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126 "switch",
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127 "typedef",
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128 "union",
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129 "volatile",
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130 "while",
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131 "_Alignas",
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132 "_Alignof",
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133 "_Atomic",
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134 "_Generic",
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135 "_Noreturn",
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136 "_Static_assert",
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137 "_Thread_local",
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138 // aliases
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139 "alignas",
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140 "alignof",
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141 "noreturn",
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142 "static_assert",
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143 "thread_local",
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144 // not a C keyword but is, for all intents and purposes, treated exactly like one.
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145 "_Pragma"
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146 ];
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147
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148 const C_TYPES = [
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149 "float",
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150 "double",
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151 "signed",
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152 "unsigned",
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153 "int",
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154 "short",
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155 "long",
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156 "char",
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157 "void",
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158 "_Bool",
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159 "_BitInt",
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160 "_Complex",
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161 "_Imaginary",
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162 "_Decimal32",
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163 "_Decimal64",
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164 "_Decimal96",
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165 "_Decimal128",
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166 "_Decimal64x",
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167 "_Decimal128x",
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168 "_Float16",
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169 "_Float32",
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170 "_Float64",
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171 "_Float128",
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172 "_Float32x",
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173 "_Float64x",
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174 "_Float128x",
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175 // modifiers
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176 "const",
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177 "static",
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178 "constexpr",
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179 // aliases
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180 "complex",
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181 "bool",
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182 "imaginary"
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183 ];
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184
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185 const KEYWORDS = {
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186 keyword: C_KEYWORDS,
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187 type: C_TYPES,
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188 literal: 'true false NULL',
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189 // TODO: apply hinting work similar to what was done in cpp.js
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190 built_in: 'std string wstring cin cout cerr clog stdin stdout stderr stringstream istringstream ostringstream '
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191 + 'auto_ptr deque list queue stack vector map set pair bitset multiset multimap unordered_set '
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192 + 'unordered_map unordered_multiset unordered_multimap priority_queue make_pair array shared_ptr abort terminate abs acos '
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193 + 'asin atan2 atan calloc ceil cosh cos exit exp fabs floor fmod fprintf fputs free frexp '
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194 + 'fscanf future isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper '
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195 + 'isxdigit tolower toupper labs ldexp log10 log malloc realloc memchr memcmp memcpy memset modf pow '
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196 + 'printf putchar puts scanf sinh sin snprintf sprintf sqrt sscanf strcat strchr strcmp '
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197 + 'strcpy strcspn strlen strncat strncmp strncpy strpbrk strrchr strspn strstr tanh tan '
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198 + 'vfprintf vprintf vsprintf endl initializer_list unique_ptr',
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199 };
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200
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201 const EXPRESSION_CONTAINS = [
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202 PREPROCESSOR,
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203 TYPES,
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204 C_LINE_COMMENT_MODE,
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205 hljs.C_BLOCK_COMMENT_MODE,
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206 NUMBERS,
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207 STRINGS
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208 ];
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209
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210 const EXPRESSION_CONTEXT = {
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211 // This mode covers expression context where we can't expect a function
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212 // definition and shouldn't highlight anything that looks like one:
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213 // `return some()`, `else if()`, `(x*sum(1, 2))`
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214 variants: [
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215 {
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216 begin: /=/,
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217 end: /;/
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218 },
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219 {
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220 begin: /\(/,
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221 end: /\)/
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222 },
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223 {
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224 beginKeywords: 'new throw return else',
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225 end: /;/
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226 }
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227 ],
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228 keywords: KEYWORDS,
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229 contains: EXPRESSION_CONTAINS.concat([
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230 {
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231 begin: /\(/,
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232 end: /\)/,
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233 keywords: KEYWORDS,
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234 contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
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235 relevance: 0
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236 }
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237 ]),
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238 relevance: 0
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239 };
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240
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241 const FUNCTION_DECLARATION = {
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242 begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
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243 returnBegin: true,
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244 end: /[{;=]/,
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245 excludeEnd: true,
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246 keywords: KEYWORDS,
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247 illegal: /[^\w\s\*&:<>.]/,
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248 contains: [
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249 { // to prevent it from being confused as the function title
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250 begin: DECLTYPE_AUTO_RE,
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251 keywords: KEYWORDS,
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252 relevance: 0
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253 },
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254 {
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255 begin: FUNCTION_TITLE,
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256 returnBegin: true,
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257 contains: [ hljs.inherit(TITLE_MODE, { className: "title.function" }) ],
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258 relevance: 0
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259 },
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260 // allow for multiple declarations, e.g.:
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261 // extern void f(int), g(char);
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262 {
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263 relevance: 0,
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264 match: /,/
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265 },
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266 {
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267 className: 'params',
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268 begin: /\(/,
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269 end: /\)/,
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270 keywords: KEYWORDS,
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271 relevance: 0,
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272 contains: [
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273 C_LINE_COMMENT_MODE,
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274 hljs.C_BLOCK_COMMENT_MODE,
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275 STRINGS,
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276 NUMBERS,
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277 TYPES,
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278 // Count matching parentheses.
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279 {
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280 begin: /\(/,
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281 end: /\)/,
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282 keywords: KEYWORDS,
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283 relevance: 0,
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284 contains: [
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285 'self',
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286 C_LINE_COMMENT_MODE,
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287 hljs.C_BLOCK_COMMENT_MODE,
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288 STRINGS,
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289 NUMBERS,
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290 TYPES
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291 ]
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292 }
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293 ]
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294 },
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295 TYPES,
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296 C_LINE_COMMENT_MODE,
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297 hljs.C_BLOCK_COMMENT_MODE,
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298 PREPROCESSOR
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299 ]
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300 };
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301
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302 return {
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303 name: "C",
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304 aliases: [ 'h' ],
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305 keywords: KEYWORDS,
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306 // Until differentiations are added between `c` and `cpp`, `c` will
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307 // not be auto-detected to avoid auto-detect conflicts between C and C++
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308 disableAutodetect: true,
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309 illegal: '</',
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310 contains: [].concat(
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311 EXPRESSION_CONTEXT,
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312 FUNCTION_DECLARATION,
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313 EXPRESSION_CONTAINS,
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314 [
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315 PREPROCESSOR,
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316 {
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317 begin: hljs.IDENT_RE + '::',
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318 keywords: KEYWORDS
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319 },
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320 {
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321 className: 'class',
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322 beginKeywords: 'enum class struct union',
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323 end: /[{;:<>=]/,
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324 contains: [
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325 { beginKeywords: "final class struct" },
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326 hljs.TITLE_MODE
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327 ]
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328 }
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329 ]),
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330 exports: {
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331 preprocessor: PREPROCESSOR,
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332 strings: STRINGS,
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333 keywords: KEYWORDS
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334 }
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335 };
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336 }
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337
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338 return c;
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339
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340 })();
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341
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342 hljs.registerLanguage('c', hljsGrammar);
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343 })();