1 | # Copyright 2014, 2015 Simon Lydell
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2 | # X11 (“MIT”) Licensed. (See LICENSE.)
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3 |
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4 | # <http://es5.github.io/#A.1>
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5 | # <http://people.mozilla.org/~jorendorff/es6-draft.html#sec-ecmascript-language-lexical-grammar>
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6 |
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7 | # Don’t worry, you don’t need to know CoffeeScript. It is only used for its
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8 | # readable regex syntax. Everything else is done in JavaScript in index.js.
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9 |
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10 | module.exports = ///
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11 | ( # <string>
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12 | ([ ' " ])
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13 | (?:
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14 | (?! \2 | \\ ).
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15 | |
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16 | \\(?: \r\n | [\s\S] )
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17 | )*
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18 | (\2)?
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19 | |
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20 | `
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21 | (?:
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22 | [^ ` \\ $ ]
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23 | |
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24 | \\[\s\S]
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25 | |
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26 | \$(?!\{)
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27 | |
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28 | \$\{
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29 | (?:
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30 | [^{}]
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31 | |
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32 | \{ [^}]* \}?
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33 | )*
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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 | |
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39 | ( # <comment>
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40 | //.*
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41 | )
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42 | |
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43 | ( # <comment>
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44 | /\*
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45 | (?:
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46 | [^*]
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47 | |
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48 | \*(?!/)
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49 | )*
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50 | ( \*/ )?
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51 | )
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52 | |
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53 | ( # <regex>
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54 | /(?!\*)
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55 | (?:
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56 | \[
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57 | (?:
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58 | (?![ \] \\ ]).
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59 | |
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60 | \\.
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61 | )*
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62 | \]
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63 | |
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64 | (?![ / \] \\ ]).
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65 | |
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66 | \\.
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67 | )+
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68 | /
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69 | (?:
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70 | (?!
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71 | \s*
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72 | (?:
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73 | \b
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74 | |
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75 | [ \u0080-\uFFFF $ \\ ' " ~ ( { ]
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76 | |
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77 | [ + \- ! ](?!=)
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78 | |
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79 | \.?\d
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80 | )
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81 | )
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82 | |
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83 | [ g m i y u ]{1,5} \b
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84 | (?!
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85 | [ \u0080-\uFFFF $ \\ ]
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86 | |
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87 | \s*
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88 | (?:
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89 | [ + \- * % & | ^ < > ! = ? ( { ]
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90 | |
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91 | /(?! [ / * ] )
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92 | )
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93 | )
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94 | )
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95 | )
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96 | |
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97 | ( # <number>
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98 | (?:
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99 | 0[xX][ \d a-f A-F ]+
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100 | |
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101 | 0[oO][0-7]+
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102 | |
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103 | 0[bB][01]+
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104 | |
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105 | (?:
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106 | \d*\.\d+
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107 | |
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108 | \d+\.? # Support one trailing dot for integers only.
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109 | )
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110 | (?: [eE][+-]?\d+ )?
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111 | )
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112 | )
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113 | |
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114 | ( # <name>
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115 | # See <http://mathiasbynens.be/notes/javascript-identifiers>.
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116 | (?!\d)
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117 | (?:
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118 | (?!\s)[ $ \w \u0080-\uFFFF ]
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119 | |
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120 | \\u[ \d a-f A-F ]{4}
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121 | |
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122 | \\u\{[ \d a-f A-F ]{1,6}\}
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123 | )+
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124 | )
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125 | |
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126 | ( # <punctuator>
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127 | -- | \+\+
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128 | |
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129 | && | \|\|
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130 | |
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131 | =>
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132 | |
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133 | \.{3}
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134 | |
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135 | (?:
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136 | [ + \- * / % & | ^ ]
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137 | |
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138 | <{1,2} | >{1,3}
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139 | |
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140 | !=? | ={1,2}
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141 | )=?
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142 | |
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143 | [ ? : ~ ]
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144 | |
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145 | [ ; , . [ \] ( ) { } ]
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146 | )
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147 | |
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148 | ( # <whitespace>
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149 | \s+
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150 | )
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151 | |
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152 | ( # <invalid>
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153 | ^$ # Empty.
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154 | |
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155 | [\s\S] # Catch-all rule for anything not matched by the above.
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156 | )
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157 | ///g
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