cm_mode_ruby.js (10854B)
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 (function (mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("resource://devtools/client/shared/lib/codemirror.js")); 7 else if (typeof define == "function" && define.amd) // AMD 8 define(["../../lib/codemirror"], mod); 9 else // Plain browser env 10 mod(CodeMirror); 11 })(function (CodeMirror) { 12 "use strict"; 13 14 CodeMirror.defineMode("ruby", function (config) { 15 function wordObj(words) { 16 var o = {}; 17 for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true; 18 return o; 19 } 20 var keywords = wordObj([ 21 "alias", "and", "BEGIN", "begin", "break", "case", "class", "def", "defined?", "do", "else", 22 "elsif", "END", "end", "ensure", "false", "for", "if", "in", "module", "next", "not", "or", 23 "redo", "rescue", "retry", "return", "self", "super", "then", "true", "undef", "unless", 24 "until", "when", "while", "yield", "nil", "raise", "throw", "catch", "fail", "loop", "callcc", 25 "caller", "lambda", "proc", "public", "protected", "private", "require", "load", 26 "require_relative", "extend", "autoload", "__END__", "__FILE__", "__LINE__", "__dir__" 27 ]); 28 var indentWords = wordObj(["def", "class", "case", "for", "while", "module", "then", 29 "catch", "loop", "proc", "begin"]); 30 var dedentWords = wordObj(["end", "until"]); 31 var matching = {"[": "]", "{": "}", "(": ")"}; 32 var curPunc; 33 34 function chain(newtok, stream, state) { 35 state.tokenize.push(newtok); 36 return newtok(stream, state); 37 } 38 39 function tokenBase(stream, state) { 40 curPunc = null; 41 if (stream.sol() && stream.match("=begin") && stream.eol()) { 42 state.tokenize.push(readBlockComment); 43 return "comment"; 44 } 45 if (stream.eatSpace()) return null; 46 var ch = stream.next(), m; 47 if (ch == "`" || ch == "'" || ch == '"') { 48 return chain(readQuoted(ch, "string", ch == '"' || ch == "`"), stream, state); 49 } else if (ch == "/") { 50 var currentIndex = stream.current().length; 51 if (stream.skipTo("/")) { 52 var search_till = stream.current().length; 53 stream.backUp(stream.current().length - currentIndex); 54 var balance = 0; // balance brackets 55 while (stream.current().length < search_till) { 56 var chchr = stream.next(); 57 if (chchr == "(") balance += 1; 58 else if (chchr == ")") balance -= 1; 59 if (balance < 0) break; 60 } 61 stream.backUp(stream.current().length - currentIndex); 62 if (balance == 0) 63 return chain(readQuoted(ch, "string-2", true), stream, state); 64 } 65 return "operator"; 66 } else if (ch == "%") { 67 var style = "string", embed = true; 68 if (stream.eat("s")) style = "atom"; 69 else if (stream.eat(/[WQ]/)) style = "string"; 70 else if (stream.eat(/[r]/)) style = "string-2"; 71 else if (stream.eat(/[wxq]/)) { style = "string"; embed = false; } 72 var delim = stream.eat(/[^\w\s=]/); 73 if (!delim) return "operator"; 74 if (matching.propertyIsEnumerable(delim)) delim = matching[delim]; 75 return chain(readQuoted(delim, style, embed, true), stream, state); 76 } else if (ch == "#") { 77 stream.skipToEnd(); 78 return "comment"; 79 } else if (ch == "<" && (m = stream.match(/^<-?[\`\"\']?([a-zA-Z_?]\w*)[\`\"\']?(?:;|$)/))) { 80 return chain(readHereDoc(m[1]), stream, state); 81 } else if (ch == "0") { 82 if (stream.eat("x")) stream.eatWhile(/[\da-fA-F]/); 83 else if (stream.eat("b")) stream.eatWhile(/[01]/); 84 else stream.eatWhile(/[0-7]/); 85 return "number"; 86 } else if (/\d/.test(ch)) { 87 stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+\-]?[\d_]+)?/); 88 return "number"; 89 } else if (ch == "?") { 90 while (stream.match(/^\\[CM]-/)) {} 91 if (stream.eat("\\")) stream.eatWhile(/\w/); 92 else stream.next(); 93 return "string"; 94 } else if (ch == ":") { 95 if (stream.eat("'")) return chain(readQuoted("'", "atom", false), stream, state); 96 if (stream.eat('"')) return chain(readQuoted('"', "atom", true), stream, state); 97 98 // :> :>> :< :<< are valid symbols 99 if (stream.eat(/[\<\>]/)) { 100 stream.eat(/[\<\>]/); 101 return "atom"; 102 } 103 104 // :+ :- :/ :* :| :& :! are valid symbols 105 if (stream.eat(/[\+\-\*\/\&\|\:\!]/)) { 106 return "atom"; 107 } 108 109 // Symbols can't start by a digit 110 if (stream.eat(/[a-zA-Z$@_\xa1-\uffff]/)) { 111 stream.eatWhile(/[\w$\xa1-\uffff]/); 112 // Only one ? ! = is allowed and only as the last character 113 stream.eat(/[\?\!\=]/); 114 return "atom"; 115 } 116 return "operator"; 117 } else if (ch == "@" && stream.match(/^@?[a-zA-Z_\xa1-\uffff]/)) { 118 stream.eat("@"); 119 stream.eatWhile(/[\w\xa1-\uffff]/); 120 return "variable-2"; 121 } else if (ch == "$") { 122 if (stream.eat(/[a-zA-Z_]/)) { 123 stream.eatWhile(/[\w]/); 124 } else if (stream.eat(/\d/)) { 125 stream.eat(/\d/); 126 } else { 127 stream.next(); // Must be a special global like $: or $! 128 } 129 return "variable-3"; 130 } else if (/[a-zA-Z_\xa1-\uffff]/.test(ch)) { 131 stream.eatWhile(/[\w\xa1-\uffff]/); 132 stream.eat(/[\?\!]/); 133 if (stream.eat(":")) return "atom"; 134 return "ident"; 135 } else if (ch == "|" && (state.varList || state.lastTok == "{" || state.lastTok == "do")) { 136 curPunc = "|"; 137 return null; 138 } else if (/[\(\)\[\]{}\\;]/.test(ch)) { 139 curPunc = ch; 140 return null; 141 } else if (ch == "-" && stream.eat(">")) { 142 return "arrow"; 143 } else if (/[=+\-\/*:\.^%<>~|]/.test(ch)) { 144 var more = stream.eatWhile(/[=+\-\/*:\.^%<>~|]/); 145 if (ch == "." && !more) curPunc = "."; 146 return "operator"; 147 } else { 148 return null; 149 } 150 } 151 152 function tokenBaseUntilBrace(depth) { 153 if (!depth) depth = 1; 154 return function (stream, state) { 155 if (stream.peek() == "}") { 156 if (depth == 1) { 157 state.tokenize.pop(); 158 return state.tokenize[state.tokenize.length - 1](stream, state); 159 } else { 160 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth - 1); 161 } 162 } else if (stream.peek() == "{") { 163 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth + 1); 164 } 165 return tokenBase(stream, state); 166 }; 167 } 168 function tokenBaseOnce() { 169 var alreadyCalled = false; 170 return function (stream, state) { 171 if (alreadyCalled) { 172 state.tokenize.pop(); 173 return state.tokenize[state.tokenize.length - 1](stream, state); 174 } 175 alreadyCalled = true; 176 return tokenBase(stream, state); 177 }; 178 } 179 function readQuoted(quote, style, embed, unescaped) { 180 return function (stream, state) { 181 var escaped = false, ch; 182 183 if (state.context.type === "read-quoted-paused") { 184 state.context = state.context.prev; 185 stream.eat("}"); 186 } 187 188 while ((ch = stream.next()) != null) { 189 if (ch == quote && (unescaped || !escaped)) { 190 state.tokenize.pop(); 191 break; 192 } 193 if (embed && ch == "#" && !escaped) { 194 if (stream.eat("{")) { 195 if (quote == "}") { 196 state.context = {prev: state.context, type: "read-quoted-paused"}; 197 } 198 state.tokenize.push(tokenBaseUntilBrace()); 199 break; 200 } else if (/[@\$]/.test(stream.peek())) { 201 state.tokenize.push(tokenBaseOnce()); 202 break; 203 } 204 } 205 escaped = !escaped && ch == "\\"; 206 } 207 return style; 208 }; 209 } 210 function readHereDoc(phrase) { 211 return function (stream, state) { 212 if (stream.match(phrase)) state.tokenize.pop(); 213 else stream.skipToEnd(); 214 return "string"; 215 }; 216 } 217 function readBlockComment(stream, state) { 218 if (stream.sol() && stream.match("=end") && stream.eol()) 219 state.tokenize.pop(); 220 stream.skipToEnd(); 221 return "comment"; 222 } 223 224 return { 225 startState: function () { 226 return {tokenize: [tokenBase], 227 indented: 0, 228 context: {type: "top", indented: -config.indentUnit}, 229 continuedLine: false, 230 lastTok: null, 231 varList: false}; 232 }, 233 234 token: function (stream, state) { 235 if (stream.sol()) state.indented = stream.indentation(); 236 var style = state.tokenize[state.tokenize.length - 1](stream, state), kwtype; 237 var thisTok = curPunc; 238 if (style == "ident") { 239 var word = stream.current(); 240 style = state.lastTok == "." ? "property" 241 : keywords.propertyIsEnumerable(stream.current()) ? "keyword" 242 : /^[A-Z]/.test(word) ? "tag" 243 : (state.lastTok == "def" || state.lastTok == "class" || state.varList) ? "def" 244 : "variable"; 245 if (style == "keyword") { 246 thisTok = word; 247 if (indentWords.propertyIsEnumerable(word)) kwtype = "indent"; 248 else if (dedentWords.propertyIsEnumerable(word)) kwtype = "dedent"; 249 else if ((word == "if" || word == "unless") && stream.column() == stream.indentation()) 250 kwtype = "indent"; 251 else if (word == "do" && state.context.indented < state.indented) 252 kwtype = "indent"; 253 } 254 } 255 if (curPunc || (style && style != "comment")) state.lastTok = thisTok; 256 if (curPunc == "|") state.varList = !state.varList; 257 258 if (kwtype == "indent" || /[\(\[\{]/.test(curPunc)) 259 state.context = {prev: state.context, type: curPunc || style, indented: state.indented}; 260 else if ((kwtype == "dedent" || /[\)\]\}]/.test(curPunc)) && state.context.prev) 261 state.context = state.context.prev; 262 263 if (stream.eol()) 264 state.continuedLine = (curPunc == "\\" || style == "operator"); 265 return style; 266 }, 267 268 indent: function (state, textAfter) { 269 if (state.tokenize[state.tokenize.length - 1] != tokenBase) return 0; 270 var firstChar = textAfter && textAfter.charAt(0); 271 var ct = state.context; 272 var closing = ct.type == matching[firstChar] || 273 ct.type == "keyword" && /^(?:end|until|else|elsif|when|rescue)\b/.test(textAfter); 274 return ct.indented + (closing ? 0 : config.indentUnit) + 275 (state.continuedLine ? config.indentUnit : 0); 276 }, 277 278 electricChars: "}de", // enD and rescuE 279 lineComment: "#" 280 }; 281 }); 282 283 CodeMirror.defineMIME("text/x-ruby", "ruby"); 284 285 });