зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
2.9 KiB
C++
93 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsIContent.h"
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#include "mozilla/dom/Document.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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public:
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bool operator==(const txXPathNode& aNode) const;
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bool operator!=(const txXPathNode& aNode) const { return !(*this == aNode); }
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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(mozilla::dom::Document* aDocument)
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: mNode(aDocument), mRefCountRoot(0), mIndex(eDocument) {
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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), mRefCountRoot(aRoot ? 1 : 0), mIndex(aIndex) {
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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) { return aNode->SubtreeRoot(); }
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nsINode* Root() const { return RootOf(mNode); }
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nsINode* GetRootToAddRef() const { return mRefCountRoot ? Root() : nullptr; }
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bool isDocument() const { return mIndex == eDocument; }
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bool isContent() const { return mIndex == eContent; }
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bool isAttribute() const { return mIndex != eDocument && mIndex != eContent; }
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nsIContent* Content() const {
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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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mozilla::dom::Document* Document() const {
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NS_ASSERTION(isDocument(), "wrong type");
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return static_cast<mozilla::dom::Document*>(mNode);
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}
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enum PositionType { eDocument = (1 << 30), eContent = eDocument - 1 };
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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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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 txNamespaceManager::getNamespaceID(
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const nsAString& aNamespaceURI) {
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int32_t namespaceID = kNameSpaceID_Unknown;
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nsContentUtils::NameSpaceManager()->RegisterNameSpace(aNamespaceURI,
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namespaceID);
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return namespaceID;
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}
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/* static */
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inline nsresult txNamespaceManager::getNamespaceURI(const int32_t aID,
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nsAString& aResult) {
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return nsContentUtils::NameSpaceManager()->GetNameSpaceURI(aID, aResult);
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}
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inline bool txXPathNode::operator==(const txXPathNode& aNode) const {
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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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