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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 /**
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5 * Link to the project's GitHub page:
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6 * https://github.com/pickhardt/coffeescript-codemirror-mode
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7 */
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8 (function(mod) {
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9 if (typeof exports == "object" && typeof module == "object") // CommonJS
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10 mod(require("../../lib/codemirror"));
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11 else if (typeof define == "function" && define.amd) // AMD
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12 define(["../../lib/codemirror"], mod);
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13 else // Plain browser env
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14 mod(CodeMirror);
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15 })(function(CodeMirror) {
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16 "use strict";
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17
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18 CodeMirror.defineMode("coffeescript", function(conf, parserConf) {
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19 var ERRORCLASS = "error";
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20
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21 function wordRegexp(words) {
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22 return new RegExp("^((" + words.join(")|(") + "))\\b");
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23 }
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24
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25 var operators = /^(?:->|=>|\+[+=]?|-[\-=]?|\*[\*=]?|\/[\/=]?|[=!]=|<[><]?=?|>>?=?|%=?|&=?|\|=?|\^=?|\~|!|\?|(or|and|\|\||&&|\?)=)/;
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26 var delimiters = /^(?:[()\[\]{},:`=;]|\.\.?\.?)/;
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27 var identifiers = /^[_A-Za-z$][_A-Za-z$0-9]*/;
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28 var atProp = /^@[_A-Za-z$][_A-Za-z$0-9]*/;
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29
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30 var wordOperators = wordRegexp(["and", "or", "not",
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31 "is", "isnt", "in",
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32 "instanceof", "typeof"]);
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33 var indentKeywords = ["for", "while", "loop", "if", "unless", "else",
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34 "switch", "try", "catch", "finally", "class"];
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35 var commonKeywords = ["break", "by", "continue", "debugger", "delete",
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36 "do", "in", "of", "new", "return", "then",
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37 "this", "@", "throw", "when", "until", "extends"];
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38
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39 var keywords = wordRegexp(indentKeywords.concat(commonKeywords));
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40
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41 indentKeywords = wordRegexp(indentKeywords);
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42
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43
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44 var stringPrefixes = /^('{3}|\"{3}|['\"])/;
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45 var regexPrefixes = /^(\/{3}|\/)/;
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46 var commonConstants = ["Infinity", "NaN", "undefined", "null", "true", "false", "on", "off", "yes", "no"];
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47 var constants = wordRegexp(commonConstants);
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48
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49 // Tokenizers
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50 function tokenBase(stream, state) {
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51 // Handle scope changes
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52 if (stream.sol()) {
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53 if (state.scope.align === null) state.scope.align = false;
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54 var scopeOffset = state.scope.offset;
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55 if (stream.eatSpace()) {
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56 var lineOffset = stream.indentation();
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57 if (lineOffset > scopeOffset && state.scope.type == "coffee") {
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58 return "indent";
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59 } else if (lineOffset < scopeOffset) {
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60 return "dedent";
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61 }
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62 return null;
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63 } else {
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64 if (scopeOffset > 0) {
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65 dedent(stream, state);
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66 }
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67 }
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68 }
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69 if (stream.eatSpace()) {
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70 return null;
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71 }
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72
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73 var ch = stream.peek();
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74
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75 // Handle docco title comment (single line)
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76 if (stream.match("####")) {
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77 stream.skipToEnd();
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78 return "comment";
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79 }
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80
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81 // Handle multi line comments
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82 if (stream.match("###")) {
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83 state.tokenize = longComment;
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84 return state.tokenize(stream, state);
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85 }
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86
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87 // Single line comment
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88 if (ch === "#") {
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89 stream.skipToEnd();
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90 return "comment";
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91 }
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92
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93 // Handle number literals
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94 if (stream.match(/^-?[0-9\.]/, false)) {
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95 var floatLiteral = false;
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96 // Floats
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97 if (stream.match(/^-?\d*\.\d+(e[\+\-]?\d+)?/i)) {
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98 floatLiteral = true;
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99 }
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100 if (stream.match(/^-?\d+\.\d*/)) {
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101 floatLiteral = true;
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102 }
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103 if (stream.match(/^-?\.\d+/)) {
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104 floatLiteral = true;
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105 }
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106
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107 if (floatLiteral) {
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108 // prevent from getting extra . on 1..
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109 if (stream.peek() == "."){
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110 stream.backUp(1);
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111 }
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112 return "number";
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113 }
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114 // Integers
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115 var intLiteral = false;
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116 // Hex
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117 if (stream.match(/^-?0x[0-9a-f]+/i)) {
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118 intLiteral = true;
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119 }
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120 // Decimal
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121 if (stream.match(/^-?[1-9]\d*(e[\+\-]?\d+)?/)) {
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122 intLiteral = true;
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123 }
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124 // Zero by itself with no other piece of number.
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125 if (stream.match(/^-?0(?![\dx])/i)) {
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126 intLiteral = true;
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127 }
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128 if (intLiteral) {
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129 return "number";
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130 }
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131 }
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132
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133 // Handle strings
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134 if (stream.match(stringPrefixes)) {
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135 state.tokenize = tokenFactory(stream.current(), false, "string");
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136 return state.tokenize(stream, state);
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137 }
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138 // Handle regex literals
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139 if (stream.match(regexPrefixes)) {
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140 if (stream.current() != "/" || stream.match(/^.*\//, false)) { // prevent highlight of division
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141 state.tokenize = tokenFactory(stream.current(), true, "string-2");
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142 return state.tokenize(stream, state);
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143 } else {
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144 stream.backUp(1);
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145 }
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146 }
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147
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148
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149
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150 // Handle operators and delimiters
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151 if (stream.match(operators) || stream.match(wordOperators)) {
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152 return "operator";
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153 }
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154 if (stream.match(delimiters)) {
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155 return "punctuation";
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156 }
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157
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158 if (stream.match(constants)) {
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159 return "atom";
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160 }
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161
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162 if (stream.match(atProp) || state.prop && stream.match(identifiers)) {
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163 return "property";
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164 }
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165
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166 if (stream.match(keywords)) {
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167 return "keyword";
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168 }
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169
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170 if (stream.match(identifiers)) {
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171 return "variable";
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172 }
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173
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174 // Handle non-detected items
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175 stream.next();
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176 return ERRORCLASS;
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177 }
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178
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179 function tokenFactory(delimiter, singleline, outclass) {
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180 return function(stream, state) {
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181 while (!stream.eol()) {
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182 stream.eatWhile(/[^'"\/\\]/);
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183 if (stream.eat("\\")) {
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184 stream.next();
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185 if (singleline && stream.eol()) {
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186 return outclass;
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187 }
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188 } else if (stream.match(delimiter)) {
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189 state.tokenize = tokenBase;
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190 return outclass;
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191 } else {
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192 stream.eat(/['"\/]/);
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193 }
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194 }
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195 if (singleline) {
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196 if (parserConf.singleLineStringErrors) {
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197 outclass = ERRORCLASS;
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198 } else {
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199 state.tokenize = tokenBase;
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200 }
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201 }
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202 return outclass;
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203 };
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204 }
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205
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206 function longComment(stream, state) {
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207 while (!stream.eol()) {
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208 stream.eatWhile(/[^#]/);
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209 if (stream.match("###")) {
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210 state.tokenize = tokenBase;
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211 break;
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212 }
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213 stream.eatWhile("#");
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214 }
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215 return "comment";
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216 }
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217
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218 function indent(stream, state, type) {
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219 type = type || "coffee";
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220 var offset = 0, align = false, alignOffset = null;
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221 for (var scope = state.scope; scope; scope = scope.prev) {
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222 if (scope.type === "coffee" || scope.type == "}") {
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223 offset = scope.offset + conf.indentUnit;
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224 break;
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225 }
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226 }
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227 if (type !== "coffee") {
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228 align = null;
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229 alignOffset = stream.column() + stream.current().length;
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230 } else if (state.scope.align) {
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231 state.scope.align = false;
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232 }
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233 state.scope = {
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234 offset: offset,
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235 type: type,
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236 prev: state.scope,
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237 align: align,
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238 alignOffset: alignOffset
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239 };
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240 }
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241
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242 function dedent(stream, state) {
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243 if (!state.scope.prev) return;
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244 if (state.scope.type === "coffee") {
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245 var _indent = stream.indentation();
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246 var matched = false;
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247 for (var scope = state.scope; scope; scope = scope.prev) {
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248 if (_indent === scope.offset) {
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249 matched = true;
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250 break;
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251 }
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252 }
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253 if (!matched) {
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254 return true;
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255 }
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256 while (state.scope.prev && state.scope.offset !== _indent) {
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257 state.scope = state.scope.prev;
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258 }
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259 return false;
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260 } else {
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261 state.scope = state.scope.prev;
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262 return false;
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263 }
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264 }
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265
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266 function tokenLexer(stream, state) {
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267 var style = state.tokenize(stream, state);
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268 var current = stream.current();
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269
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270 // Handle scope changes.
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271 if (current === "return") {
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272 state.dedent = true;
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273 }
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274 if (((current === "->" || current === "=>") && stream.eol())
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275 || style === "indent") {
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276 indent(stream, state);
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277 }
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278 var delimiter_index = "[({".indexOf(current);
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279 if (delimiter_index !== -1) {
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280 indent(stream, state, "])}".slice(delimiter_index, delimiter_index+1));
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281 }
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282 if (indentKeywords.exec(current)){
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283 indent(stream, state);
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284 }
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285 if (current == "then"){
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286 dedent(stream, state);
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287 }
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288
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289
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290 if (style === "dedent") {
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291 if (dedent(stream, state)) {
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292 return ERRORCLASS;
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293 }
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294 }
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295 delimiter_index = "])}".indexOf(current);
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296 if (delimiter_index !== -1) {
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297 while (state.scope.type == "coffee" && state.scope.prev)
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298 state.scope = state.scope.prev;
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299 if (state.scope.type == current)
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300 state.scope = state.scope.prev;
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301 }
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302 if (state.dedent && stream.eol()) {
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303 if (state.scope.type == "coffee" && state.scope.prev)
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304 state.scope = state.scope.prev;
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305 state.dedent = false;
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306 }
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307
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308 return style;
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309 }
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310
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311 var external = {
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312 startState: function(basecolumn) {
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313 return {
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314 tokenize: tokenBase,
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315 scope: {offset:basecolumn || 0, type:"coffee", prev: null, align: false},
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316 prop: false,
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317 dedent: 0
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318 };
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319 },
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320
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321 token: function(stream, state) {
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322 var fillAlign = state.scope.align === null && state.scope;
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323 if (fillAlign && stream.sol()) fillAlign.align = false;
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324
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325 var style = tokenLexer(stream, state);
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326 if (style && style != "comment") {
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327 if (fillAlign) fillAlign.align = true;
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328 state.prop = style == "punctuation" && stream.current() == "."
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329 }
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330
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331 return style;
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332 },
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333
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334 indent: function(state, text) {
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335 if (state.tokenize != tokenBase) return 0;
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336 var scope = state.scope;
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337 var closer = text && "])}".indexOf(text.charAt(0)) > -1;
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338 if (closer) while (scope.type == "coffee" && scope.prev) scope = scope.prev;
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339 var closes = closer && scope.type === text.charAt(0);
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340 if (scope.align)
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341 return scope.alignOffset - (closes ? 1 : 0);
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342 else
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343 return (closes ? scope.prev : scope).offset;
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344 },
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345
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346 lineComment: "#",
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347 fold: "indent"
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348 };
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349 return external;
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350 });
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351
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352 // IANA registered media type
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353 // https://www.iana.org/assignments/media-types/
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354 CodeMirror.defineMIME("application/vnd.coffeescript", "coffeescript");
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355
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356 CodeMirror.defineMIME("text/x-coffeescript", "coffeescript");
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357 CodeMirror.defineMIME("text/coffeescript", "coffeescript");
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358
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359 });
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