/parser/html/nsHtml5SpeculativeLoad.h
http://github.com/zpao/v8monkey · C Header · 157 lines · 72 code · 14 blank · 71 comment · 6 complexity · 9f138e126f886ab897e13cb6a0e6ce1a MD5 · raw file
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is HTML Parser C++ Translator code.
- *
- * The Initial Developer of the Original Code is
- * Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2010
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Henri Sivonen <hsivonen@iki.fi>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #ifndef nsHtml5SpeculativeLoad_h_
- #define nsHtml5SpeculativeLoad_h_
- #include "nsString.h"
- class nsHtml5TreeOpExecutor;
- enum eHtml5SpeculativeLoad {
- #ifdef DEBUG
- eSpeculativeLoadUninitialized,
- #endif
- eSpeculativeLoadBase,
- eSpeculativeLoadImage,
- eSpeculativeLoadScript,
- eSpeculativeLoadStyle,
- eSpeculativeLoadManifest,
- eSpeculativeLoadSetDocumentCharset
- };
- class nsHtml5SpeculativeLoad {
- public:
- nsHtml5SpeculativeLoad();
- ~nsHtml5SpeculativeLoad();
-
- inline void InitBase(const nsAString& aUrl) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadBase;
- mUrl.Assign(aUrl);
- }
- inline void InitImage(const nsAString& aUrl,
- const nsAString& aCrossOrigin) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadImage;
- mUrl.Assign(aUrl);
- mCharsetOrCrossOrigin.Assign(aCrossOrigin);
- }
- inline void InitScript(const nsAString& aUrl,
- const nsAString& aCharset,
- const nsAString& aType) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadScript;
- mUrl.Assign(aUrl);
- mCharsetOrCrossOrigin.Assign(aCharset);
- mTypeOrCharsetSource.Assign(aType);
- }
-
- inline void InitStyle(const nsAString& aUrl, const nsAString& aCharset) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadStyle;
- mUrl.Assign(aUrl);
- mCharsetOrCrossOrigin.Assign(aCharset);
- }
- /**
- * "Speculative" manifest loads aren't truly speculative--if a manifest
- * gets loaded, we are committed to it. There can never be a <script>
- * before the manifest, so the situation of having to undo a manifest due
- * to document.write() never arises. The reason why a parser
- * thread-discovered manifest gets loaded via the speculative load queue
- * as opposed to tree operation queue is that the manifest must get
- * processed before any actual speculative loads such as scripts. Thus,
- * manifests seen by the parser thread have to maintain the queue order
- * relative to true speculative loads. See bug 541079.
- */
- inline void InitManifest(const nsAString& aUrl) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadManifest;
- mUrl.Assign(aUrl);
- }
- /**
- * "Speculative" charset setting isn't truly speculative. If the charset
- * is set via this operation, we are committed to it unless chardet or
- * a late meta cause a reload. The reason why a parser
- * thread-discovered charset gets communicated via the speculative load
- * queue as opposed to tree operation queue is that the charset change
- * must get processed before any actual speculative loads such as style
- * sheets. Thus, encoding decisions by the parser thread have to maintain
- * the queue order relative to true speculative loads. See bug 675499.
- */
- inline void InitSetDocumentCharset(nsACString& aCharset,
- PRInt32 aCharsetSource) {
- NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized,
- "Trying to reinitialize a speculative load!");
- mOpCode = eSpeculativeLoadSetDocumentCharset;
- CopyUTF8toUTF16(aCharset, mCharsetOrCrossOrigin);
- mTypeOrCharsetSource.Assign((PRUnichar)aCharsetSource);
- }
- void Perform(nsHtml5TreeOpExecutor* aExecutor);
-
- private:
- eHtml5SpeculativeLoad mOpCode;
- nsString mUrl;
- /**
- * If mOpCode is eSpeculativeLoadImage, this is the value of the
- * "crossorigin" attribute. If mOpCode is eSpeculativeLoadStyle
- * or eSpeculativeLoadScript then this is the value of the
- * "charset" attribute. For eSpeculativeLoadSetDocumentCharset it is
- * the charset that the document's charset is being set to. Otherwise
- * it's empty.
- */
- nsString mCharsetOrCrossOrigin;
- /**
- * If mOpCode is eSpeculativeLoadSetDocumentCharset, this is a
- * one-character string whose single character's code point is to be
- * interpreted as a charset source integer. Otherwise, it is empty or
- * the value of the type attribute.
- */
- nsString mTypeOrCharsetSource;
- };
- #endif // nsHtml5SpeculativeLoad_h_