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/*
* Copyright (C) 2013 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
WebInspector.SourceMapManager = class SourceMapManager extends WebInspector.Object
{
constructor()
{
super();
this._sourceMapURLMap = {};
this._downloadingSourceMaps = {};
WebInspector.Frame.addEventListener(WebInspector.Frame.Event.MainResourceDidChange, this._mainResourceDidChange, this);
}
// Public
sourceMapForURL(sourceMapURL)
{
return this._sourceMapURLMap[sourceMapURL];
}
downloadSourceMap(sourceMapURL, baseURL, originalSourceCode)
{
sourceMapURL = absoluteURL(sourceMapURL, baseURL);
if (!sourceMapURL)
return;
console.assert(originalSourceCode.url);
if (!originalSourceCode.url)
return;
// FIXME: <rdar://problem/13265694> Source Maps: Better handle when multiple resources reference the same SourceMap
if (sourceMapURL in this._sourceMapURLMap)
return;
if (sourceMapURL in this._downloadingSourceMaps)
return;
function loadAndParseSourceMap()
{
this._loadAndParseSourceMap(sourceMapURL, baseURL, originalSourceCode);
}
if (!WebInspector.frameResourceManager.mainFrame) {
// If we don't have a main frame, then we are likely in the middle of building the resource tree.
// Delaying until the next runloop is enough in this case to then start loading the source map.
setTimeout(loadAndParseSourceMap.bind(this), 0);
return;
}
loadAndParseSourceMap.call(this);
}
// Private
_loadAndParseSourceMap(sourceMapURL, baseURL, originalSourceCode)
{
this._downloadingSourceMaps[sourceMapURL] = true;
function sourceMapLoaded(error, content, mimeType, statusCode)
{
if (error || statusCode >= 400) {
this._loadAndParseFailed(sourceMapURL);
return;
}
if (content.slice(0, 3) === ")]}") {
var firstNewlineIndex = content.indexOf("\n");
if (firstNewlineIndex === -1) {
this._loadAndParseFailed(sourceMapURL);
return;
}
content = content.substring(firstNewlineIndex);
}
try {
var payload = JSON.parse(content);
var baseURL = sourceMapURL.startsWith("data:") ? originalSourceCode.url : sourceMapURL;
var sourceMap = new WebInspector.SourceMap(baseURL, payload, originalSourceCode);
this._loadAndParseSucceeded(sourceMapURL, sourceMap);
} catch(e) {
this._loadAndParseFailed(sourceMapURL);
}
}
if (sourceMapURL.startsWith("data:")) {
let {mimeType, base64, data} = parseDataURL(sourceMapURL);
let content = base64 ? atob(data) : data;
sourceMapLoaded.call(this, null, content, mimeType, 0);
return;
}
// COMPATIBILITY (iOS 7): Network.loadResource did not exist.
// Also, JavaScript Debuggable may reach this.
if (!window.NetworkAgent || !NetworkAgent.loadResource) {
this._loadAndParseFailed(sourceMapURL);
return;
}
var frameIdentifier = null;
if (originalSourceCode instanceof WebInspector.Resource && originalSourceCode.parentFrame)
frameIdentifier = originalSourceCode.parentFrame.id;
if (!frameIdentifier)
frameIdentifier = WebInspector.frameResourceManager.mainFrame.id;
NetworkAgent.loadResource(frameIdentifier, sourceMapURL, sourceMapLoaded.bind(this));
}
_loadAndParseFailed(sourceMapURL)
{
delete this._downloadingSourceMaps[sourceMapURL];
}
_loadAndParseSucceeded(sourceMapURL, sourceMap)
{
if (!(sourceMapURL in this._downloadingSourceMaps))
return;
delete this._downloadingSourceMaps[sourceMapURL];
this._sourceMapURLMap[sourceMapURL] = sourceMap;
var sources = sourceMap.sources();
for (var i = 0; i < sources.length; ++i) {
var sourceMapResource = new WebInspector.SourceMapResource(sources[i], sourceMap);
sourceMap.addResource(sourceMapResource);
}
// Associate the SourceMap with the originalSourceCode.
sourceMap.originalSourceCode.addSourceMap(sourceMap);
// If the originalSourceCode was not a Resource, be sure to also associate with the Resource if one exists.
// FIXME: We should try to use the right frame instead of a global lookup by URL.
if (!(sourceMap.originalSourceCode instanceof WebInspector.Resource)) {
console.assert(sourceMap.originalSourceCode instanceof WebInspector.Script);
var resource = sourceMap.originalSourceCode.resource;
if (resource)
resource.addSourceMap(sourceMap);
}
}
_mainResourceDidChange(event)
{
if (!event.target.isMainFrame())
return;
this._sourceMapURLMap = {};
this._downloadingSourceMaps = {};
}
};
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