js.antlr4.FileStream.js Maven / Gradle / Ivy

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//
/* Copyright (c) 2012-2016 The ANTLR Project. All rights reserved.
 * Use of this file is governed by the BSD 3-clause license that
 * can be found in the LICENSE.txt file in the project root.
 */
//

//
//  This is an InputStream that is loaded from a file all at once
//  when you construct the object.
//
var InputStream = require('./InputStream').InputStream;
var isNodeJs = typeof window === 'undefined' && typeof importScripts === 'undefined';
var fs = isNodeJs ? require("fs") : null;

function FileStream(fileName) {
	var data = fs.readFileSync(fileName, "utf8");
	InputStream.call(this, data);
	this.fileName = fileName;
	return this;
}

FileStream.prototype = Object.create(InputStream.prototype);
FileStream.prototype.constructor = FileStream;

exports.FileStream = FileStream;