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122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is HTML Parser C++ Translator code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Henri Sivonen <hsivonen@iki.fi>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsHtml5SpeculativeLoad_h_
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#define nsHtml5SpeculativeLoad_h_
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#include "nsString.h"
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class nsHtml5TreeOpExecutor;
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enum eHtml5SpeculativeLoad {
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#ifdef DEBUG
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eSpeculativeLoadUninitialized,
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#endif
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eSpeculativeLoadBase,
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eSpeculativeLoadImage,
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eSpeculativeLoadScript,
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eSpeculativeLoadStyle,
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eSpeculativeLoadManifest
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};
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class nsHtml5SpeculativeLoad {
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public:
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nsHtml5SpeculativeLoad();
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~nsHtml5SpeculativeLoad();
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inline void InitBase(const nsAString& aUrl) {
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NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
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"Trying to reinitialize a speculative load!");
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mOpCode = eSpeculativeLoadBase;
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mUrl.Assign(aUrl);
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}
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inline void InitImage(const nsAString& aUrl) {
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NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
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"Trying to reinitialize a speculative load!");
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mOpCode = eSpeculativeLoadImage;
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mUrl.Assign(aUrl);
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}
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inline void InitScript(const nsAString& aUrl,
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const nsAString& aCharset,
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const nsAString& aType) {
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NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
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"Trying to reinitialize a speculative load!");
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mOpCode = eSpeculativeLoadScript;
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mUrl.Assign(aUrl);
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mCharset.Assign(aCharset);
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mType.Assign(aType);
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}
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inline void InitStyle(const nsAString& aUrl, const nsAString& aCharset) {
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NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
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"Trying to reinitialize a speculative load!");
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mOpCode = eSpeculativeLoadStyle;
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mUrl.Assign(aUrl);
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mCharset.Assign(aCharset);
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}
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/**
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* "Speculative" manifest loads aren't truly speculative--if a manifest
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* gets loaded, we are committed to it. There can never be a <script>
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* before the manifest, so the situation of having to undo a manifest due
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* to document.write() never arises. The reason why a parser
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* thread-discovered manifest gets loaded via the speculative load queue
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* as opposed to tree operation queue is that the manifest must get
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* processed before any actually speculative loads such as scripts. Thus,
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* manifests seen by the parser thread have to maintain the queue order
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* relative to true speculative loads. See bug 541079.
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*/
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inline void InitManifest(const nsAString& aUrl) {
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NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
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"Trying to reinitialize a speculative load!");
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mOpCode = eSpeculativeLoadManifest;
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mUrl.Assign(aUrl);
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}
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void Perform(nsHtml5TreeOpExecutor* aExecutor);
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private:
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eHtml5SpeculativeLoad mOpCode;
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nsString mUrl;
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nsString mCharset;
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nsString mType;
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};
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#endif // nsHtml5SpeculativeLoad_h_
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