1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 onmessage = function(event) { 32 var source = event.data; 33 var formattedSource = beautify(source); 34 var mapping = buildMapping(source, formattedSource); 35 postMessage({ formattedSource: formattedSource, mapping: mapping }); 36 }; 37 38 function beautify(source) 39 { 40 var ast = parse.parse(source); 41 var beautifyOptions = { 42 indent_level: 4, 43 indent_start: 0, 44 quote_keys: false, 45 space_colon: false 46 }; 47 return process.gen_code(ast, beautifyOptions); 48 } 49 50 function buildMapping(source, formattedSource) 51 { 52 var mapping = { original: [], formatted: [] }; 53 var lastPosition = 0; 54 var regexp = /(^|[^\\])\b((?=\D)[\$\.\w]+)\b/g; 55 while (true) { 56 var match = regexp.exec(formattedSource); 57 if (!match) 58 break; 59 var position = source.indexOf(match[2], lastPosition); 60 if (position === -1) 61 throw "No match found in original source for " + match[2]; 62 mapping.original.push(position); 63 mapping.formatted.push(match.index + match[1].length); 64 lastPosition = position + match[2].length; 65 } 66 return mapping; 67 } 68 69 function require() 70 { 71 return parse; 72 } 73 74 var exports = {}; 75 importScripts("UglifyJS/parse-js.js"); 76 var parse = exports; 77 78 var exports = {}; 79 importScripts("UglifyJS/process.js"); 80 var process = exports; 81
