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364 lines
12 KiB
C++
364 lines
12 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) 2009
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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 nsHtml5TreeOperation_h__
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#define nsHtml5TreeOperation_h__
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#include "nsHtml5DocumentMode.h"
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#include "nsHtml5HtmlAttributes.h"
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#include "nsXPCOMStrings.h"
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class nsIContent;
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class nsHtml5TreeOpExecutor;
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class nsHtml5StateSnapshot;
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enum eHtml5TreeOperation {
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#ifdef DEBUG
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eTreeOpUninitialized,
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#endif
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// main HTML5 ops
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eTreeOpAppend,
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eTreeOpDetach,
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eTreeOpAppendChildrenToNewParent,
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eTreeOpFosterParent,
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eTreeOpAppendToDocument,
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eTreeOpAddAttributes,
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eTreeOpDocumentMode,
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eTreeOpCreateElementNetwork,
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eTreeOpCreateElementNotNetwork,
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eTreeOpSetFormElement,
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eTreeOpAppendText,
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eTreeOpAppendIsindexPrompt,
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eTreeOpFosterParentText,
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eTreeOpAppendComment,
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eTreeOpAppendCommentToDocument,
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eTreeOpAppendDoctypeToDocument,
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// Gecko-specific on-pop ops
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eTreeOpRunScript,
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eTreeOpRunScriptAsyncDefer,
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eTreeOpDoneAddingChildren,
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eTreeOpDoneCreatingElement,
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eTreeOpFlushPendingAppendNotifications,
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eTreeOpSetDocumentCharset,
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eTreeOpNeedsCharsetSwitchTo,
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eTreeOpUpdateStyleSheet,
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eTreeOpProcessMeta,
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eTreeOpProcessOfflineManifest,
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eTreeOpMarkMalformedIfScript,
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eTreeOpStreamEnded,
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eTreeOpSetStyleLineNumber,
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eTreeOpSetScriptLineNumberAndFreeze,
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#ifdef MOZ_SVG
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eTreeOpSvgLoad,
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#endif
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eTreeOpStartLayout
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};
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class nsHtml5TreeOperationStringPair {
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private:
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nsString mPublicId;
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nsString mSystemId;
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public:
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nsHtml5TreeOperationStringPair(const nsAString& aPublicId,
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const nsAString& aSystemId)
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: mPublicId(aPublicId)
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, mSystemId(aSystemId) {
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MOZ_COUNT_CTOR(nsHtml5TreeOperationStringPair);
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}
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~nsHtml5TreeOperationStringPair() {
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MOZ_COUNT_DTOR(nsHtml5TreeOperationStringPair);
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}
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inline void Get(nsAString& aPublicId, nsAString& aSystemId) {
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aPublicId.Assign(mPublicId);
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aSystemId.Assign(mSystemId);
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}
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};
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class nsHtml5TreeOperation {
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public:
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nsHtml5TreeOperation();
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~nsHtml5TreeOperation();
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inline void Init(eHtml5TreeOperation aOpCode) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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mOpCode = aOpCode;
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}
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inline void Init(eHtml5TreeOperation aOpCode, nsIContent** aNode) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aNode, "Initialized tree op with null node.");
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mOpCode = aOpCode;
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mOne.node = aNode;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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nsIContent** aNode,
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nsIContent** aParent) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aNode, "Initialized tree op with null node.");
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NS_PRECONDITION(aParent, "Initialized tree op with null parent.");
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mOpCode = aOpCode;
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mOne.node = aNode;
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mTwo.node = aParent;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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const nsACString& aString,
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PRInt32 aInt32) {
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Init(aOpCode, aString);
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mInt = aInt32;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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nsIContent** aNode,
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nsIContent** aParent,
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nsIContent** aTable) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aNode, "Initialized tree op with null node.");
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NS_PRECONDITION(aParent, "Initialized tree op with null parent.");
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NS_PRECONDITION(aTable, "Initialized tree op with null table.");
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mOpCode = aOpCode;
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mOne.node = aNode;
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mTwo.node = aParent;
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mThree.node = aTable;
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}
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inline void Init(nsHtml5DocumentMode aMode) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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mOpCode = eTreeOpDocumentMode;
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mOne.mode = aMode;
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}
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inline void InitScript(nsIContent** aNode) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aNode, "Initialized tree op with null node.");
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mOpCode = eTreeOpRunScript;
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mOne.node = aNode;
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mTwo.state = nsnull;
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}
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inline void Init(PRInt32 aNamespace,
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nsIAtom* aName,
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nsHtml5HtmlAttributes* aAttributes,
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nsIContent** aTarget,
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PRBool aFromNetwork) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aName, "Initialized tree op with null name.");
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NS_PRECONDITION(aTarget, "Initialized tree op with null target node.");
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mOpCode = aFromNetwork ?
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eTreeOpCreateElementNetwork :
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eTreeOpCreateElementNotNetwork;
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mInt = aNamespace;
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mOne.node = aTarget;
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mTwo.atom = aName;
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if (aAttributes == nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES) {
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mThree.attributes = nsnull;
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} else {
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mThree.attributes = aAttributes;
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}
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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PRUnichar* aBuffer,
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PRInt32 aLength,
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nsIContent** aStackParent,
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nsIContent** aTable) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aBuffer, "Initialized tree op with null buffer.");
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mOpCode = aOpCode;
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mOne.node = aStackParent;
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mTwo.unicharPtr = aBuffer;
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mThree.node = aTable;
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mInt = aLength;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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PRUnichar* aBuffer,
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PRInt32 aLength,
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nsIContent** aParent) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aBuffer, "Initialized tree op with null buffer.");
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mOpCode = aOpCode;
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mOne.node = aParent;
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mTwo.unicharPtr = aBuffer;
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mInt = aLength;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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PRUnichar* aBuffer,
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PRInt32 aLength) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aBuffer, "Initialized tree op with null buffer.");
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mOpCode = aOpCode;
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mTwo.unicharPtr = aBuffer;
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mInt = aLength;
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}
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inline void Init(nsIContent** aElement,
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nsHtml5HtmlAttributes* aAttributes) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aElement, "Initialized tree op with null element.");
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mOpCode = eTreeOpAddAttributes;
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mOne.node = aElement;
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mTwo.attributes = aAttributes;
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}
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inline void Init(nsIAtom* aName,
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const nsAString& aPublicId,
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const nsAString& aSystemId) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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mOpCode = eTreeOpAppendDoctypeToDocument;
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mOne.atom = aName;
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mTwo.stringPair = new nsHtml5TreeOperationStringPair(aPublicId, aSystemId);
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}
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inline void Init(eHtml5TreeOperation aOpCode, const nsACString& aString) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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PRInt32 len = aString.Length();
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char* str = new char[len + 1];
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const char* start = aString.BeginReading();
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for (PRInt32 i = 0; i < len; ++i) {
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str[i] = start[i];
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}
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str[len] = '\0';
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mOpCode = aOpCode;
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mOne.charPtr = str;
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}
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inline void Init(eHtml5TreeOperation aOpCode, const nsAString& aString) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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PRUnichar* str = NS_StringCloneData(aString);
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mOpCode = aOpCode;
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mOne.unicharPtr = str;
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}
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inline void Init(eHtml5TreeOperation aOpCode,
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nsIContent** aNode,
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PRInt32 aInt) {
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NS_PRECONDITION(mOpCode == eTreeOpUninitialized,
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"Op code must be uninitialized when initializing.");
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NS_PRECONDITION(aNode, "Initialized tree op with null node.");
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mOpCode = aOpCode;
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mOne.node = aNode;
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mInt = aInt;
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}
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inline PRBool IsRunScript() {
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return mOpCode == eTreeOpRunScript;
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}
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inline void SetSnapshot(nsAHtml5TreeBuilderState* aSnapshot, PRInt32 aLine) {
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NS_ASSERTION(IsRunScript(),
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"Setting a snapshot for a tree operation other than eTreeOpRunScript!");
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NS_PRECONDITION(aSnapshot, "Initialized tree op with null snapshot.");
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mTwo.state = aSnapshot;
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mInt = aLine;
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}
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nsresult Perform(nsHtml5TreeOpExecutor* aBuilder, nsIContent** aScriptElement);
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inline already_AddRefed<nsIAtom> Reget(nsIAtom* aAtom) {
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if (!aAtom || aAtom->IsStaticAtom()) {
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return aAtom;
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}
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nsAutoString str;
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aAtom->ToString(str);
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return do_GetAtom(str);
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}
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private:
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nsresult AppendTextToTextNode(const PRUnichar* aBuffer,
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PRInt32 aLength,
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nsIContent* aTextNode,
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nsHtml5TreeOpExecutor* aBuilder);
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nsresult AppendText(const PRUnichar* aBuffer,
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PRInt32 aLength,
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nsIContent* aParent,
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nsHtml5TreeOpExecutor* aBuilder);
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nsresult Append(nsIContent* aNode,
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nsIContent* aParent,
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nsHtml5TreeOpExecutor* aBuilder);
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nsresult AppendToDocument(nsIContent* aNode,
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nsHtml5TreeOpExecutor* aBuilder);
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// possible optimization:
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// Make the queue take items the size of pointer and make the op code
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// decide how many operands it dequeues after it.
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eHtml5TreeOperation mOpCode;
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union {
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nsIContent** node;
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nsIAtom* atom;
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nsHtml5HtmlAttributes* attributes;
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nsHtml5DocumentMode mode;
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PRUnichar* unicharPtr;
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char* charPtr;
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nsHtml5TreeOperationStringPair* stringPair;
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nsAHtml5TreeBuilderState* state;
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} mOne, mTwo, mThree;
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PRInt32 mInt; // optimize this away later by using an end
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// pointer instead of string length and distinct
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// element creation opcodes for HTML, MathML and
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// SVG.
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};
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#endif // nsHtml5TreeOperation_h__
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