User:Equazcion/javascript.js

// TODO actually recognize syntax of TypeScript constructs

CodeMirror.defineMode("javascript", function(config, parserConfig) { var indentUnit = config.indentUnit;  var jsonMode = parserConfig.json;  var isTS = parserConfig.typescript;

// 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"}; var jsKeywords = { "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 };

// Extend the 'normal' keywords with the TypeScript language extensions if (isTS) { var type = {type: "variable", style: "variable-3"}; var tsKeywords = { // object-like things "interface": kw("interface"), "class": kw("class"), "extends": kw("extends"), "constructor": kw("constructor"),

// scope modifiers "public": kw("public"), "private": kw("private"), "protected": kw("protected"), "static": kw("static"),

"super": kw("super"),

// types "string": type, "number": type, "bool": type, "any": type };

for (var attr in tsKeywords) { jsKeywords[attr] = tsKeywords[attr]; }   }

return jsKeywords; };

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) || ch == "-" && stream.eat(/\d/)) {      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.lastType == "operator" || state.lastType == "keyword c" ||               /^[\[{}\(,;:]$/.test(state.lastType)) {        nextUntilUnescaped(stream, "/");        stream.eatWhile(/[gimy]/); // 'y' is "sticky" option in Mozilla        return ret("regexp", "string-2"); }     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.lastType != ".") ? 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) { function inList(list) { for (var v = list; v; v = v.next) if (v.name == varname) return true; return false; }   var state = cx.state; if (state.context) { cx.marked = "def"; if (inList(state.localVars)) return; state.localVars = {name: varname, next: state.localVars}; } else { if (inList(state.globalVars)) return; state.globalVars = {name: varname, next: state.globalVars}; } }

// Combinators

var defaultVars = {name: "this", next: {name: "arguments"}}; function pushcontext { cx.state.context = {prev: cx.state.context, vars: cx.state.localVars}; cx.state.localVars = defaultVars; } 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(")"), maybeexpression, 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" && value == "?") return cont(expression, expect(":"), 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 maybetype(type) { if (type == ":") return cont(typedef); return pass; } function typedef(type) { if (type == "variable"){cx.marked = "variable-3"; return cont;} return pass; } function vardef1(type, value) { if (type == "variable") { register(value); return isTS ? cont(maybetype, vardef2) : cont(vardef2); }   return pass; } function vardef2(type, value) { if (value == "=") return cont(expression, vardef2); if (type == ",") return cont(vardef1); } function forspec1(type) { if (type == "var") return cont(vardef1, expect(";"), forspec2); if (type == ";") return cont(forspec2); if (type == "variable") return cont(formaybein); return cont(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 isTS ? cont(maybetype) : cont;} }

// Interface

return { startState: function(basecolumn) { return { tokenize: jsTokenBase, lastType: null, cc: [], lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false), localVars: parserConfig.localVars, globalVars: parserConfig.globalVars, context: parserConfig.localVars && {vars: parserConfig.localVars}, 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.lastType = type; return parseJS(state, style, type, content, stream); },

indent: function(state, textAfter) { if (state.tokenize == jsTokenComment) return CodeMirror.Pass; if (state.tokenize != jsTokenBase) return 0; var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical; if (lexical.type == "stat" && firstChar == "}") lexical = lexical.prev; var type = lexical.type, closing = firstChar == type; if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? 4 : 0); else if (type == "form" && firstChar == "{") return lexical.indented; else if (type == "form") return lexical.indented + indentUnit; else if (type == "stat") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? indentUnit : 0); 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: ":{}",

jsonMode: jsonMode }; });

CodeMirror.defineMIME("text/javascript", "javascript"); CodeMirror.defineMIME("text/ecmascript", "javascript"); CodeMirror.defineMIME("application/javascript", "javascript"); CodeMirror.defineMIME("application/ecmascript", "javascript"); CodeMirror.defineMIME("application/json", {name: "javascript", json: true}); CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true }); CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });