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pegjs.js
114 lines
| 3.5 KiB
| application/javascript
|
JavascriptLexer
r1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others | |||
// Distributed under an MIT license: http://codemirror.net/LICENSE | ||||
(function(mod) { | ||||
if (typeof exports == "object" && typeof module == "object") // CommonJS | ||||
mod(require("../../lib/codemirror"), require("../javascript/javascript")); | ||||
else if (typeof define == "function" && define.amd) // AMD | ||||
define(["../../lib/codemirror", "../javascript/javascript"], mod); | ||||
else // Plain browser env | ||||
mod(CodeMirror); | ||||
})(function(CodeMirror) { | ||||
"use strict"; | ||||
CodeMirror.defineMode("pegjs", function (config) { | ||||
var jsMode = CodeMirror.getMode(config, "javascript"); | ||||
function identifier(stream) { | ||||
return stream.match(/^[a-zA-Z_][a-zA-Z0-9_]*/); | ||||
} | ||||
return { | ||||
startState: function () { | ||||
return { | ||||
inString: false, | ||||
stringType: null, | ||||
inComment: false, | ||||
inChracterClass: false, | ||||
braced: 0, | ||||
lhs: true, | ||||
localState: null | ||||
}; | ||||
}, | ||||
token: function (stream, state) { | ||||
if (stream) | ||||
//check for state changes | ||||
if (!state.inString && !state.inComment && ((stream.peek() == '"') || (stream.peek() == "'"))) { | ||||
state.stringType = stream.peek(); | ||||
stream.next(); // Skip quote | ||||
state.inString = true; // Update state | ||||
} | ||||
if (!state.inString && !state.inComment && stream.match(/^\/\*/)) { | ||||
state.inComment = true; | ||||
} | ||||
//return state | ||||
if (state.inString) { | ||||
while (state.inString && !stream.eol()) { | ||||
if (stream.peek() === state.stringType) { | ||||
stream.next(); // Skip quote | ||||
state.inString = false; // Clear flag | ||||
} else if (stream.peek() === '\\') { | ||||
stream.next(); | ||||
stream.next(); | ||||
} else { | ||||
stream.match(/^.[^\\\"\']*/); | ||||
} | ||||
} | ||||
return state.lhs ? "property string" : "string"; // Token style | ||||
} else if (state.inComment) { | ||||
while (state.inComment && !stream.eol()) { | ||||
if (stream.match(/\*\//)) { | ||||
state.inComment = false; // Clear flag | ||||
} else { | ||||
stream.match(/^.[^\*]*/); | ||||
} | ||||
} | ||||
return "comment"; | ||||
} else if (state.inChracterClass) { | ||||
while (state.inChracterClass && !stream.eol()) { | ||||
if (!(stream.match(/^[^\]\\]+/) || stream.match(/^\\./))) { | ||||
state.inChracterClass = false; | ||||
} | ||||
} | ||||
} else if (stream.peek() === '[') { | ||||
stream.next(); | ||||
state.inChracterClass = true; | ||||
return 'bracket'; | ||||
} else if (stream.match(/^\/\//)) { | ||||
stream.skipToEnd(); | ||||
return "comment"; | ||||
} else if (state.braced || stream.peek() === '{') { | ||||
if (state.localState === null) { | ||||
state.localState = jsMode.startState(); | ||||
} | ||||
var token = jsMode.token(stream, state.localState); | ||||
var text = stream.current(); | ||||
if (!token) { | ||||
for (var i = 0; i < text.length; i++) { | ||||
if (text[i] === '{') { | ||||
state.braced++; | ||||
} else if (text[i] === '}') { | ||||
state.braced--; | ||||
} | ||||
}; | ||||
} | ||||
return token; | ||||
} else if (identifier(stream)) { | ||||
if (stream.peek() === ':') { | ||||
return 'variable'; | ||||
} | ||||
return 'variable-2'; | ||||
} else if (['[', ']', '(', ')'].indexOf(stream.peek()) != -1) { | ||||
stream.next(); | ||||
return 'bracket'; | ||||
} else if (!stream.eatSpace()) { | ||||
stream.next(); | ||||
} | ||||
return null; | ||||
} | ||||
}; | ||||
}, "javascript"); | ||||
}); | ||||