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