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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
var parse = loadModule("parse-js.js");
var process = loadModule("process.js");
onmessage = function(event) {
var source = event.data;
var formattedSource = beautify(source);
var mapping = buildMapping(source, formattedSource);
postMessage({ formattedSource: formattedSource, mapping: mapping });
};
function beautify(source)
{
var ast = parse.parse(source);
var beautifyOptions = {
indent_level: 4,
indent_start: 0,
quote_keys: false,
space_colon: false
};
return process.gen_code(ast, beautifyOptions);
}
function buildMapping(source, formattedSource)
{
var mapping = { original: [], formatted: [] };
var lastCodePosition = 0;
var regexp = /[\$\.\w]+|{|}/g;
while (true) {
var match = regexp.exec(formattedSource);
if (!match)
break;
var position = source.indexOf(match[0], lastCodePosition);
if (position === -1)
continue;
mapping.original.push(position);
mapping.formatted.push(match.index);
lastCodePosition = position + match[0].length;
}
return mapping;
}
function loadModule(src)
{
var request = new XMLHttpRequest();
request.open("GET", src, false);
request.send();
var exports = {};
eval(request.responseText);
return exports;
}
function require()
{
return parse;
}
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