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gecko-dev/parser/html/nsHtml5TreeOperation.h

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