зеркало из https://github.com/mozilla/gecko-dev.git
137 строки
3.3 KiB
C++
137 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef txXPathNode_h__
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#define txXPathNode_h__
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#include "nsAutoPtr.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsINode.h"
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#include "nsNameSpaceManager.h"
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#include "nsContentUtils.h" // For NameSpaceManager().
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typedef nsINode txXPathNodeType;
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class txXPathNode
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{
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public:
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bool operator==(const txXPathNode& aNode) const;
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bool operator!=(const txXPathNode& aNode) const
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{
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return !(*this == aNode);
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}
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~txXPathNode();
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private:
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friend class txNodeSet;
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friend class txXPathNativeNode;
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friend class txXPathNodeUtils;
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friend class txXPathTreeWalker;
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txXPathNode(const txXPathNode& aNode);
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explicit txXPathNode(nsIDocument* aDocument) : mNode(aDocument),
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mRefCountRoot(0),
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mIndex(eDocument)
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{
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MOZ_COUNT_CTOR(txXPathNode);
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}
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txXPathNode(nsINode *aNode, uint32_t aIndex, nsINode *aRoot)
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: mNode(aNode),
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mRefCountRoot(aRoot ? 1 : 0),
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mIndex(aIndex)
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{
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MOZ_COUNT_CTOR(txXPathNode);
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if (aRoot) {
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NS_ADDREF(aRoot);
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}
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}
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static nsINode *RootOf(nsINode *aNode)
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{
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nsINode *ancestor, *root = aNode;
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while ((ancestor = root->GetParentNode())) {
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root = ancestor;
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}
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return root;
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}
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nsINode *Root() const
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{
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return RootOf(mNode);
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}
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nsINode *GetRootToAddRef() const
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{
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return mRefCountRoot ? Root() : nullptr;
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}
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bool isDocument() const
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{
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return mIndex == eDocument;
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}
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bool isContent() const
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{
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return mIndex == eContent;
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}
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bool isAttribute() const
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{
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return mIndex != eDocument && mIndex != eContent;
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}
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nsIContent* Content() const
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{
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NS_ASSERTION(isContent() || isAttribute(), "wrong type");
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return static_cast<nsIContent*>(mNode);
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}
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nsIDocument* Document() const
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{
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NS_ASSERTION(isDocument(), "wrong type");
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return static_cast<nsIDocument*>(mNode);
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}
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enum PositionType
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{
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eDocument = (1 << 30),
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eContent = eDocument - 1
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};
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nsINode* mNode;
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uint32_t mRefCountRoot : 1;
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uint32_t mIndex : 31;
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};
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class txNamespaceManager
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{
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public:
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static int32_t getNamespaceID(const nsAString& aNamespaceURI);
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static nsresult getNamespaceURI(const int32_t aID, nsAString& aResult);
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};
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/* static */
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inline int32_t
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txNamespaceManager::getNamespaceID(const nsAString& aNamespaceURI)
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{
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int32_t namespaceID = kNameSpaceID_Unknown;
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nsContentUtils::NameSpaceManager()->
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RegisterNameSpace(aNamespaceURI, namespaceID);
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return namespaceID;
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}
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/* static */
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inline nsresult
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txNamespaceManager::getNamespaceURI(const int32_t aID, nsAString& aResult)
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{
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return nsContentUtils::NameSpaceManager()->
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GetNameSpaceURI(aID, aResult);
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}
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inline bool
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txXPathNode::operator==(const txXPathNode& aNode) const
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{
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return mIndex == aNode.mIndex && mNode == aNode.mNode;
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}
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#endif /* txXPathNode_h__ */
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