| CodeMirror.defineMode("javascript", function(config, parserConfig) { | |
| var indentUnit = config.indentUnit; | |
| var jsonMode = parserConfig.json; | |
| // Tokenizer | |
| var keywords = function(){ | |
| function kw(type) {return {type: type, style: "keyword"};} | |
| var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c"); | |
| var operator = kw("operator"), atom = {type: "atom", style: "atom"}; | |
| return { | |
| "if": A, "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B, | |
| "return": C, "break": C, "continue": C, "new": C, "delete": C, "throw": C, | |
| "var": kw("var"), "const": kw("var"), "let": kw("var"), | |
| "function": kw("function"), "catch": kw("catch"), | |
| "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"), | |
| "in": operator, "typeof": operator, "instanceof": operator, | |
| "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom | |
| }; | |
| }(); | |
| var isOperatorChar = /[+\-*&%=<>!?|]/; | |
| function chain(stream, state, f) { | |
| state.tokenize = f; | |
| return f(stream, state); | |
| } | |
| function nextUntilUnescaped(stream, end) { | |
| var escaped = false, next; | |
| while ((next = stream.next()) != null) { | |
| if (next == end && !escaped) | |
| return false; | |
| escaped = !escaped && next == "\\"; | |
| } | |
| return escaped; | |
| } | |
| // Used as scratch variables to communicate multiple values without | |
| // consing up tons of objects. | |
| var type, content; | |
| function ret(tp, style, cont) { | |
| type = tp; content = cont; | |
| return style; | |
| } | |
| function jsTokenBase(stream, state) { | |
| var ch = stream.next(); | |
| if (ch == '"' || ch == "'") | |
| return chain(stream, state, jsTokenString(ch)); | |
| else if (/[\[\]{}\(\),;\:\.]/.test(ch)) | |
| return ret(ch); | |
| else if (ch == "0" && stream.eat(/x/i)) { | |
| stream.eatWhile(/[\da-f]/i); | |
| return ret("number", "number"); | |
| } | |
| else if (/\d/.test(ch)) { | |
| stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/); | |
| return ret("number", "number"); | |
| } | |
| else if (ch == "/") { | |
| if (stream.eat("*")) { | |
| return chain(stream, state, jsTokenComment); | |
| } | |
| else if (stream.eat("/")) { | |
| stream.skipToEnd(); | |
| return ret("comment", "comment"); | |
| } | |
| else if (state.reAllowed) { | |
| nextUntilUnescaped(stream, "/"); | |
| stream.eatWhile(/[gimy]/); // 'y' is "sticky" option in Mozilla | |
| return ret("regexp", "string"); | |
| } | |
| else { | |
| stream.eatWhile(isOperatorChar); | |
| return ret("operator", null, stream.current()); | |
| } | |
| } | |
| else if (ch == "#") { | |
| stream.skipToEnd(); | |
| return ret("error", "error"); | |
| } | |
| else if (isOperatorChar.test(ch)) { | |
| stream.eatWhile(isOperatorChar); | |
| return ret("operator", null, stream.current()); | |
| } | |
| else { | |
| stream.eatWhile(/[\w\$_]/); | |
| var word = stream.current(), known = keywords.propertyIsEnumerable(word) && keywords[word]; | |
| return (known && state.kwAllowed) ? ret(known.type, known.style, word) : | |
| ret("variable", "variable", word); | |
| } | |
| } | |
| function jsTokenString(quote) { | |
| return function(stream, state) { | |
| if (!nextUntilUnescaped(stream, quote)) | |
| state.tokenize = jsTokenBase; | |
| return ret("string", "string"); | |
| }; | |
| } | |
| function jsTokenComment(stream, state) { | |
| var maybeEnd = false, ch; | |
| while (ch = stream.next()) { | |
| if (ch == "/" && maybeEnd) { | |
| state.tokenize = jsTokenBase; | |
| break; | |
| } | |
| maybeEnd = (ch == "*"); | |
| } | |
| return ret("comment", "comment"); | |
| } | |
| // Parser | |
| var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true}; | |
| function JSLexical(indented, column, type, align, prev, info) { | |
| this.indented = indented; | |
| this.column = column; | |
| this.type = type; | |
| this.prev = prev; | |
| this.info = info; | |
| if (align != null) this.align = align; | |
| } | |
| function inScope(state, varname) { | |
| for (var v = state.localVars; v; v = v.next) | |
| if (v.name == varname) return true; | |
| } | |
| function parseJS(state, style, type, content, stream) { | |
| var cc = state.cc; | |
| // Communicate our context to the combinators. | |
| // (Less wasteful than consing up a hundred closures on every call.) | |
| cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; | |
| if (!state.lexical.hasOwnProperty("align")) | |
| state.lexical.align = true; | |
| while(true) { | |
| var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement; | |
| if (combinator(type, content)) { | |
| while(cc.length && cc[cc.length - 1].lex) | |
| cc.pop()(); | |
| if (cx.marked) return cx.marked; | |
| if (type == "variable" && inScope(state, content)) return "variable-2"; | |
| return style; | |
| } | |
| } | |
| } | |
| // Combinator utils | |
| var cx = {state: null, column: null, marked: null, cc: null}; | |
| function pass() { | |
| for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]); | |
| } | |
| function cont() { | |
| pass.apply(null, arguments); | |
| return true; | |
| } | |
| function register(varname) { | |
| var state = cx.state; | |
| if (state.context) { | |
| cx.marked = "def"; | |
| for (var v = state.localVars; v; v = v.next) | |
| if (v.name == varname) return; | |
| state.localVars = {name: varname, next: state.localVars}; | |
| } | |
| } | |
| // Combinators | |
| var defaultVars = {name: "this", next: {name: "arguments"}}; | |
| function pushcontext() { | |
| if (!cx.state.context) cx.state.localVars = defaultVars; | |
| cx.state.context = {prev: cx.state.context, vars: cx.state.localVars}; | |
| } | |
| function popcontext() { | |
| cx.state.localVars = cx.state.context.vars; | |
| cx.state.context = cx.state.context.prev; | |
| } | |
| function pushlex(type, info) { | |
| var result = function() { | |
| var state = cx.state; | |
| state.lexical = new JSLexical(state.indented, cx.stream.column(), type, null, state.lexical, info) | |
| }; | |
| result.lex = true; | |
| return result; | |
| } | |
| function poplex() { | |
| var state = cx.state; | |
| if (state.lexical.prev) { | |
| if (state.lexical.type == ")") | |
| state.indented = state.lexical.indented; | |
| state.lexical = state.lexical.prev; | |
| } | |
| } | |
| poplex.lex = true; | |
| function expect(wanted) { | |
| return function expecting(type) { | |
| if (type == wanted) return cont(); | |
| else if (wanted == ";") return pass(); | |
| else return cont(arguments.callee); | |
| }; | |
| } | |
| function statement(type) { | |
| if (type == "var") return cont(pushlex("vardef"), vardef1, expect(";"), poplex); | |
| if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex); | |
| if (type == "keyword b") return cont(pushlex("form"), statement, poplex); | |
| if (type == "{") return cont(pushlex("}"), block, poplex); | |
| if (type == ";") return cont(); | |
| if (type == "function") return cont(functiondef); | |
| if (type == "for") return cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"), | |
| poplex, statement, poplex); | |
| if (type == "variable") return cont(pushlex("stat"), maybelabel); | |
| if (type == "switch") return cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"), | |
| block, poplex, poplex); | |
| if (type == "case") return cont(expression, expect(":")); | |
| if (type == "default") return cont(expect(":")); | |
| if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"), | |
| statement, poplex, popcontext); | |
| return pass(pushlex("stat"), expression, expect(";"), poplex); | |
| } | |
| function expression(type) { | |
| if (atomicTypes.hasOwnProperty(type)) return cont(maybeoperator); | |
| if (type == "function") return cont(functiondef); | |
| if (type == "keyword c") return cont(maybeexpression); | |
| if (type == "(") return cont(pushlex(")"), expression, expect(")"), poplex, maybeoperator); | |
| if (type == "operator") return cont(expression); | |
| if (type == "[") return cont(pushlex("]"), commasep(expression, "]"), poplex, maybeoperator); | |
| if (type == "{") return cont(pushlex("}"), commasep(objprop, "}"), poplex, maybeoperator); | |
| return cont(); | |
| } | |
| function maybeexpression(type) { | |
| if (type.match(/[;\}\)\],]/)) return pass(); | |
| return pass(expression); | |
| } | |
| function maybeoperator(type, value) { | |
| if (type == "operator" && /\+\+|--/.test(value)) return cont(maybeoperator); | |
| if (type == "operator") return cont(expression); | |
| if (type == ";") return; | |
| if (type == "(") return cont(pushlex(")"), commasep(expression, ")"), poplex, maybeoperator); | |
| if (type == ".") return cont(property, maybeoperator); | |
| if (type == "[") return cont(pushlex("]"), expression, expect("]"), poplex, maybeoperator); | |
| } | |
| function maybelabel(type) { | |
| if (type == ":") return cont(poplex, statement); | |
| return pass(maybeoperator, expect(";"), poplex); | |
| } | |
| function property(type) { | |
| if (type == "variable") {cx.marked = "property"; return cont();} | |
| } | |
| function objprop(type) { | |
| if (type == "variable") cx.marked = "property"; | |
| if (atomicTypes.hasOwnProperty(type)) return cont(expect(":"), expression); | |
| } | |
| function commasep(what, end) { | |
| function proceed(type) { | |
| if (type == ",") return cont(what, proceed); | |
| if (type == end) return cont(); | |
| return cont(expect(end)); | |
| } | |
| return function commaSeparated(type) { | |
| if (type == end) return cont(); | |
| else return pass(what, proceed); | |
| }; | |
| } | |
| function block(type) { | |
| if (type == "}") return cont(); | |
| return pass(statement, block); | |
| } | |
| function vardef1(type, value) { | |
| if (type == "variable"){register(value); return cont(vardef2);} | |
| return cont(); | |
| } | |
| function vardef2(type, value) { | |
| if (value == "=") return cont(expression, vardef2); | |
| if (type == ",") return cont(vardef1); | |
| } | |
| function forspec1(type) { | |
| if (type == "var") return cont(vardef1, forspec2); | |
| if (type == ";") return pass(forspec2); | |
| if (type == "variable") return cont(formaybein); | |
| return pass(forspec2); | |
| } | |
| function formaybein(type, value) { | |
| if (value == "in") return cont(expression); | |
| return cont(maybeoperator, forspec2); | |
| } | |
| function forspec2(type, value) { | |
| if (type == ";") return cont(forspec3); | |
| if (value == "in") return cont(expression); | |
| return cont(expression, expect(";"), forspec3); | |
| } | |
| function forspec3(type) { | |
| if (type != ")") cont(expression); | |
| } | |
| function functiondef(type, value) { | |
| if (type == "variable") {register(value); return cont(functiondef);} | |
| if (type == "(") return cont(pushlex(")"), pushcontext, commasep(funarg, ")"), poplex, statement, popcontext); | |
| } | |
| function funarg(type, value) { | |
| if (type == "variable") {register(value); return cont();} | |
| } | |
| // Interface | |
| return { | |
| startState: function(basecolumn) { | |
| return { | |
| tokenize: jsTokenBase, | |
| reAllowed: true, | |
| kwAllowed: true, | |
| cc: [], | |
| lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false), | |
| localVars: null, | |
| context: null, | |
| indented: 0 | |
| }; | |
| }, | |
| token: function(stream, state) { | |
| if (stream.sol()) { | |
| if (!state.lexical.hasOwnProperty("align")) | |
| state.lexical.align = false; | |
| state.indented = stream.indentation(); | |
| } | |
| if (stream.eatSpace()) return null; | |
| var style = state.tokenize(stream, state); | |
| if (type == "comment") return style; | |
| state.reAllowed = type == "operator" || type == "keyword c" || type.match(/^[\[{}\(,;:]$/); | |
| state.kwAllowed = type != '.'; | |
| return parseJS(state, style, type, content, stream); | |
| }, | |
| indent: function(state, textAfter) { | |
| if (state.tokenize != jsTokenBase) return 0; | |
| var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, | |
| type = lexical.type, closing = firstChar == type; | |
| if (type == "vardef") return lexical.indented + 4; | |
| else if (type == "form" && firstChar == "{") return lexical.indented; | |
| else if (type == "stat" || type == "form") return lexical.indented + indentUnit; | |
| else if (lexical.info == "switch" && !closing) | |
| return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit); | |
| else if (lexical.align) return lexical.column + (closing ? 0 : 1); | |
| else return lexical.indented + (closing ? 0 : indentUnit); | |
| }, | |
| electricChars: ":{}" | |
| }; |