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115 lines
3.5 KiB
115 lines
3.5 KiB
9 years ago
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://codemirror.net/LICENSE
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../../lib/codemirror"), require("../javascript/javascript"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror", "../javascript/javascript"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.defineMode("pegjs", function (config) {
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var jsMode = CodeMirror.getMode(config, "javascript");
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function identifier(stream) {
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return stream.match(/^[a-zA-Z_][a-zA-Z0-9_]*/);
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}
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return {
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startState: function () {
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return {
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inString: false,
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stringType: null,
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inComment: false,
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inCharacterClass: false,
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braced: 0,
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lhs: true,
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localState: null
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};
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},
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token: function (stream, state) {
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if (stream)
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//check for state changes
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if (!state.inString && !state.inComment && ((stream.peek() == '"') || (stream.peek() == "'"))) {
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state.stringType = stream.peek();
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stream.next(); // Skip quote
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state.inString = true; // Update state
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}
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if (!state.inString && !state.inComment && stream.match(/^\/\*/)) {
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state.inComment = true;
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}
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//return state
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if (state.inString) {
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while (state.inString && !stream.eol()) {
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if (stream.peek() === state.stringType) {
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stream.next(); // Skip quote
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state.inString = false; // Clear flag
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} else if (stream.peek() === '\\') {
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stream.next();
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stream.next();
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} else {
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stream.match(/^.[^\\\"\']*/);
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}
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}
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return state.lhs ? "property string" : "string"; // Token style
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} else if (state.inComment) {
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while (state.inComment && !stream.eol()) {
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if (stream.match(/\*\//)) {
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state.inComment = false; // Clear flag
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} else {
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stream.match(/^.[^\*]*/);
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}
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}
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return "comment";
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} else if (state.inCharacterClass) {
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while (state.inCharacterClass && !stream.eol()) {
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if (!(stream.match(/^[^\]\\]+/) || stream.match(/^\\./))) {
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state.inCharacterClass = false;
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}
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}
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} else if (stream.peek() === '[') {
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stream.next();
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state.inCharacterClass = true;
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return 'bracket';
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} else if (stream.match(/^\/\//)) {
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stream.skipToEnd();
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return "comment";
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} else if (state.braced || stream.peek() === '{') {
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if (state.localState === null) {
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state.localState = CodeMirror.startState(jsMode);
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}
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var token = jsMode.token(stream, state.localState);
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var text = stream.current();
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if (!token) {
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for (var i = 0; i < text.length; i++) {
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if (text[i] === '{') {
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state.braced++;
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} else if (text[i] === '}') {
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state.braced--;
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}
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};
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}
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return token;
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} else if (identifier(stream)) {
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if (stream.peek() === ':') {
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return 'variable';
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}
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return 'variable-2';
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} else if (['[', ']', '(', ')'].indexOf(stream.peek()) != -1) {
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stream.next();
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return 'bracket';
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} else if (!stream.eatSpace()) {
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stream.next();
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}
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return null;
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}
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};
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}, "javascript");
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});
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