RetroZilla/extensions/transformiix/source/xpath/txXPathTreeWalker.h

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2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 TransforMiiX XSLT processor code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Peter Van der Beken <peterv@propagandism.org>
*
* 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 txXPathTreeWalker_h__
#define txXPathTreeWalker_h__
#include "txCore.h"
#include "txXPathNode.h"
class nsIAtom;
#ifndef TX_EXE
#include "nsINodeInfo.h"
#include "nsVoidArray.h"
class txUint32Array : public nsVoidArray
{
public:
PRBool AppendValue(PRUint32 aValue)
{
return InsertElementAt(NS_INT32_TO_PTR(aValue), Count());
}
PRBool RemoveValueAt(PRUint32 aIndex)
{
return RemoveElementsAt(aIndex, 1);
}
PRInt32 ValueAt(PRUint32 aIndex) const
{
return NS_PTR_TO_INT32(ElementAt(aIndex));
}
};
class nsIDOMDocument;
#endif
class txXPathTreeWalker
{
public:
txXPathTreeWalker(const txXPathTreeWalker& aOther);
explicit txXPathTreeWalker(const txXPathNode& aNode);
~txXPathTreeWalker();
PRBool getAttr(nsIAtom* aLocalName, PRInt32 aNSID, nsAString& aValue) const;
PRInt32 getNamespaceID() const;
PRUint16 getNodeType() const;
void appendNodeValue(nsAString& aResult) const;
void getNodeName(nsAString& aName) const;
void moveTo(const txXPathTreeWalker& aWalker);
PRBool moveToParent();
PRBool moveToElementById(const nsAString& aID);
PRBool moveToFirstAttribute();
PRBool moveToNextAttribute();
PRBool moveToFirstChild();
PRBool moveToLastChild();
PRBool moveToNextSibling();
PRBool moveToPreviousSibling();
PRBool isOnNode(const txXPathNode& aNode) const;
const txXPathNode& getCurrentPosition() const;
private:
txXPathNode mPosition;
#ifndef TX_EXE
PRBool moveToValidAttribute(PRUint32 aStartIndex);
PRBool moveToSibling(PRInt32 aDir);
PRUint32 mCurrentIndex;
txUint32Array mDescendants;
#endif
};
class txXPathNodeUtils
{
public:
static PRBool getAttr(const txXPathNode& aNode, nsIAtom* aLocalName,
PRInt32 aNSID, nsAString& aValue);
static already_AddRefed<nsIAtom> getLocalName(const txXPathNode& aNode);
static void getLocalName(const txXPathNode& aNode, nsAString& aLocalName);
static void getNodeName(const txXPathNode& aNode,
nsAString& aName);
static PRInt32 getNamespaceID(const txXPathNode& aNode);
static void getNamespaceURI(const txXPathNode& aNode, nsAString& aURI);
static PRUint16 getNodeType(const txXPathNode& aNode);
static void appendNodeValue(const txXPathNode& aNode, nsAString& aResult);
static PRBool isWhitespace(const txXPathNode& aNode);
static txXPathNode* getDocument(const txXPathNode& aNode);
static txXPathNode* getOwnerDocument(const txXPathNode& aNode);
static PRInt32 getUniqueIdentifier(const txXPathNode& aNode);
static nsresult getXSLTId(const txXPathNode& aNode, nsAString& aResult);
static void release(txXPathNode* aNode);
static void getBaseURI(const txXPathNode& aNode, nsAString& aURI);
static PRIntn comparePosition(const txXPathNode& aNode,
const txXPathNode& aOtherNode);
static PRBool localNameEquals(const txXPathNode& aNode,
nsIAtom* aLocalName);
static PRBool isRoot(const txXPathNode& aNode);
static PRBool isElement(const txXPathNode& aNode);
static PRBool isAttribute(const txXPathNode& aNode);
static PRBool isProcessingInstruction(const txXPathNode& aNode);
static PRBool isComment(const txXPathNode& aNode);
static PRBool isText(const txXPathNode& aNode);
#ifdef TX_EXE
private:
static void appendNodeValueHelper(NodeDefinition* aNode, nsAString& aResult);
#endif
};
#ifdef TX_EXE
class txXPathNativeNode
{
public:
static txXPathNode* createXPathNode(Node* aNode);
static nsresult getElement(const txXPathNode& aNode, Element** aResult);
static nsresult getDocument(const txXPathNode& aNode, Document** aResult);
};
#else
class txXPathNativeNode
{
public:
static txXPathNode* createXPathNode(nsIDOMNode* aNode);
static txXPathNode* createXPathNode(nsIDOMDocument* aDocument);
static nsresult getNode(const txXPathNode& aNode, nsIDOMNode** aResult);
static nsIContent* getContent(const txXPathNode& aNode);
static nsIDocument* getDocument(const txXPathNode& aNode);
static void addRef(const txXPathNode& aNode)
{
// Hopefully it's ok to access mContent through mDocument.
NS_ADDREF(aNode.mDocument);
}
static void release(const txXPathNode& aNode)
{
// Hopefully it's ok to access mContent through mDocument.
nsISupports *node = aNode.mDocument;
NS_RELEASE(node);
}
};
#endif
inline const txXPathNode&
txXPathTreeWalker::getCurrentPosition() const
{
return mPosition;
}
inline PRBool
txXPathTreeWalker::getAttr(nsIAtom* aLocalName, PRInt32 aNSID,
nsAString& aValue) const
{
return txXPathNodeUtils::getAttr(mPosition, aLocalName, aNSID, aValue);
}
inline PRInt32
txXPathTreeWalker::getNamespaceID() const
{
return txXPathNodeUtils::getNamespaceID(mPosition);
}
inline void
txXPathTreeWalker::appendNodeValue(nsAString& aResult) const
{
txXPathNodeUtils::appendNodeValue(mPosition, aResult);
}
inline void
txXPathTreeWalker::getNodeName(nsAString& aName) const
{
txXPathNodeUtils::getNodeName(mPosition, aName);
}
inline void
txXPathTreeWalker::moveTo(const txXPathTreeWalker& aWalker)
{
#ifdef TX_EXE
mPosition.mInner = aWalker.mPosition.mInner;
#else
mPosition.mIndex = aWalker.mPosition.mIndex;
// Hopefully it's ok to access mContent through mDocument.
mPosition.mDocument = aWalker.mPosition.mDocument;
mCurrentIndex = aWalker.mCurrentIndex;
mDescendants.Clear();
#endif
}
inline PRBool
txXPathTreeWalker::isOnNode(const txXPathNode& aNode) const
{
return (mPosition == aNode);
}
/* static */
inline PRInt32
txXPathNodeUtils::getUniqueIdentifier(const txXPathNode& aNode)
{
#ifdef TX_EXE
return NS_PTR_TO_INT32(aNode.mInner);
#else
NS_PRECONDITION(aNode.mIndex == txXPathNode::eDocument,
"Only implemented for documents.");
return NS_PTR_TO_INT32(aNode.mDocument);
#endif
}
/* static */
inline void
txXPathNodeUtils::release(txXPathNode* aNode)
{
#ifdef TX_EXE
delete aNode->mInner;
#else
NS_RELEASE(aNode->mDocument);
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::localNameEquals(const txXPathNode& aNode,
nsIAtom* aLocalName)
{
#ifdef TX_EXE
nsCOMPtr<nsIAtom> localName;
aNode.mInner->getLocalName(getter_AddRefs(localName));
return localName == aLocalName;
#else
if (aNode.isContent()) {
nsINodeInfo *ni = aNode.mContent->GetNodeInfo();
if (ni) {
return ni->Equals(aLocalName);
}
}
nsCOMPtr<nsIAtom> localName = txXPathNodeUtils::getLocalName(aNode);
return localName == aLocalName;
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isRoot(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::DOCUMENT_NODE;
#else
return aNode.isDocument();
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isElement(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::ELEMENT_NODE;
#else
return aNode.isContent() &&
aNode.mContent->IsContentOfType(nsIContent::eELEMENT);
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isAttribute(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::ATTRIBUTE_NODE;
#else
return aNode.isAttribute();
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isProcessingInstruction(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::PROCESSING_INSTRUCTION_NODE;
#else
return aNode.isContent() &&
aNode.mContent->IsContentOfType(nsIContent::ePROCESSING_INSTRUCTION);
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isComment(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::COMMENT_NODE;
#else
return aNode.isContent() &&
aNode.mContent->IsContentOfType(nsIContent::eCOMMENT);
#endif
}
/* static */
inline PRBool
txXPathNodeUtils::isText(const txXPathNode& aNode)
{
#ifdef TX_EXE
return aNode.mInner->getNodeType() == Node::TEXT_NODE;
#else
return aNode.isContent() &&
aNode.mContent->IsContentOfType(nsIContent::eTEXT);
#endif
}
#endif /* txXPathTreeWalker_h__ */