github.com/elliott5/community@v0.14.1-0.20160709191136-823126fb026a/app/public/codemirror/mode/ruby/ruby.js (about) 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("../../lib/codemirror")); 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", "until", "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 if (stream.sol() && stream.match("=begin") && stream.eol()) { 41 state.tokenize.push(readBlockComment); 42 return "comment"; 43 } 44 if (stream.eatSpace()) return null; 45 var ch = stream.next(), m; 46 if (ch == "`" || ch == "'" || ch == '"') { 47 return chain(readQuoted(ch, "string", ch == '"' || ch == "`"), stream, state); 48 } else if (ch == "/") { 49 var currentIndex = stream.current().length; 50 if (stream.skipTo("/")) { 51 var search_till = stream.current().length; 52 stream.backUp(stream.current().length - currentIndex); 53 var balance = 0; // balance brackets 54 while (stream.current().length < search_till) { 55 var chchr = stream.next(); 56 if (chchr == "(") balance += 1; 57 else if (chchr == ")") balance -= 1; 58 if (balance < 0) break; 59 } 60 stream.backUp(stream.current().length - currentIndex); 61 if (balance == 0) 62 return chain(readQuoted(ch, "string-2", true), stream, state); 63 } 64 return "operator"; 65 } else if (ch == "%") { 66 var style = "string", embed = true; 67 if (stream.eat("s")) style = "atom"; 68 else if (stream.eat(/[WQ]/)) style = "string"; 69 else if (stream.eat(/[r]/)) style = "string-2"; 70 else if (stream.eat(/[wxq]/)) { style = "string"; embed = false; } 71 var delim = stream.eat(/[^\w\s=]/); 72 if (!delim) return "operator"; 73 if (matching.propertyIsEnumerable(delim)) delim = matching[delim]; 74 return chain(readQuoted(delim, style, embed, true), stream, state); 75 } else if (ch == "#") { 76 stream.skipToEnd(); 77 return "comment"; 78 } else if (ch == "<" && (m = stream.match(/^<-?[\`\"\']?([a-zA-Z_?]\w*)[\`\"\']?(?:;|$)/))) { 79 return chain(readHereDoc(m[1]), stream, state); 80 } else if (ch == "0") { 81 if (stream.eat("x")) stream.eatWhile(/[\da-fA-F]/); 82 else if (stream.eat("b")) stream.eatWhile(/[01]/); 83 else stream.eatWhile(/[0-7]/); 84 return "number"; 85 } else if (/\d/.test(ch)) { 86 stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+\-]?[\d_]+)?/); 87 return "number"; 88 } else if (ch == "?") { 89 while (stream.match(/^\\[CM]-/)) {} 90 if (stream.eat("\\")) stream.eatWhile(/\w/); 91 else stream.next(); 92 return "string"; 93 } else if (ch == ":") { 94 if (stream.eat("'")) return chain(readQuoted("'", "atom", false), stream, state); 95 if (stream.eat('"')) return chain(readQuoted('"', "atom", true), stream, state); 96 97 // :> :>> :< :<< are valid symbols 98 if (stream.eat(/[\<\>]/)) { 99 stream.eat(/[\<\>]/); 100 return "atom"; 101 } 102 103 // :+ :- :/ :* :| :& :! are valid symbols 104 if (stream.eat(/[\+\-\*\/\&\|\:\!]/)) { 105 return "atom"; 106 } 107 108 // Symbols can't start by a digit 109 if (stream.eat(/[a-zA-Z$@_\xa1-\uffff]/)) { 110 stream.eatWhile(/[\w$\xa1-\uffff]/); 111 // Only one ? ! = is allowed and only as the last character 112 stream.eat(/[\?\!\=]/); 113 return "atom"; 114 } 115 return "operator"; 116 } else if (ch == "@" && stream.match(/^@?[a-zA-Z_\xa1-\uffff]/)) { 117 stream.eat("@"); 118 stream.eatWhile(/[\w\xa1-\uffff]/); 119 return "variable-2"; 120 } else if (ch == "$") { 121 if (stream.eat(/[a-zA-Z_]/)) { 122 stream.eatWhile(/[\w]/); 123 } else if (stream.eat(/\d/)) { 124 stream.eat(/\d/); 125 } else { 126 stream.next(); // Must be a special global like $: or $! 127 } 128 return "variable-3"; 129 } else if (/[a-zA-Z_\xa1-\uffff]/.test(ch)) { 130 stream.eatWhile(/[\w\xa1-\uffff]/); 131 stream.eat(/[\?\!]/); 132 if (stream.eat(":")) return "atom"; 133 return "ident"; 134 } else if (ch == "|" && (state.varList || state.lastTok == "{" || state.lastTok == "do")) { 135 curPunc = "|"; 136 return null; 137 } else if (/[\(\)\[\]{}\\;]/.test(ch)) { 138 curPunc = ch; 139 return null; 140 } else if (ch == "-" && stream.eat(">")) { 141 return "arrow"; 142 } else if (/[=+\-\/*:\.^%<>~|]/.test(ch)) { 143 var more = stream.eatWhile(/[=+\-\/*:\.^%<>~|]/); 144 if (ch == "." && !more) curPunc = "."; 145 return "operator"; 146 } else { 147 return null; 148 } 149 } 150 151 function tokenBaseUntilBrace(depth) { 152 if (!depth) depth = 1; 153 return function(stream, state) { 154 if (stream.peek() == "}") { 155 if (depth == 1) { 156 state.tokenize.pop(); 157 return state.tokenize[state.tokenize.length-1](stream, state); 158 } else { 159 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth - 1); 160 } 161 } else if (stream.peek() == "{") { 162 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth + 1); 163 } 164 return tokenBase(stream, state); 165 }; 166 } 167 function tokenBaseOnce() { 168 var alreadyCalled = false; 169 return function(stream, state) { 170 if (alreadyCalled) { 171 state.tokenize.pop(); 172 return state.tokenize[state.tokenize.length-1](stream, state); 173 } 174 alreadyCalled = true; 175 return tokenBase(stream, state); 176 }; 177 } 178 function readQuoted(quote, style, embed, unescaped) { 179 return function(stream, state) { 180 var escaped = false, ch; 181 182 if (state.context.type === 'read-quoted-paused') { 183 state.context = state.context.prev; 184 stream.eat("}"); 185 } 186 187 while ((ch = stream.next()) != null) { 188 if (ch == quote && (unescaped || !escaped)) { 189 state.tokenize.pop(); 190 break; 191 } 192 if (embed && ch == "#" && !escaped) { 193 if (stream.eat("{")) { 194 if (quote == "}") { 195 state.context = {prev: state.context, type: 'read-quoted-paused'}; 196 } 197 state.tokenize.push(tokenBaseUntilBrace()); 198 break; 199 } else if (/[@\$]/.test(stream.peek())) { 200 state.tokenize.push(tokenBaseOnce()); 201 break; 202 } 203 } 204 escaped = !escaped && ch == "\\"; 205 } 206 return style; 207 }; 208 } 209 function readHereDoc(phrase) { 210 return function(stream, state) { 211 if (stream.match(phrase)) state.tokenize.pop(); 212 else stream.skipToEnd(); 213 return "string"; 214 }; 215 } 216 function readBlockComment(stream, state) { 217 if (stream.sol() && stream.match("=end") && stream.eol()) 218 state.tokenize.pop(); 219 stream.skipToEnd(); 220 return "comment"; 221 } 222 223 return { 224 startState: function() { 225 return {tokenize: [tokenBase], 226 indented: 0, 227 context: {type: "top", indented: -config.indentUnit}, 228 continuedLine: false, 229 lastTok: null, 230 varList: false}; 231 }, 232 233 token: function(stream, state) { 234 curPunc = null; 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 });