1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/xslt/xpath/txXPathTreeWalker.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,278 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef txXPathTreeWalker_h__
1.10 +#define txXPathTreeWalker_h__
1.11 +
1.12 +#include "txCore.h"
1.13 +#include "txXPathNode.h"
1.14 +#include "nsIContentInlines.h"
1.15 +#include "nsINodeInfo.h"
1.16 +#include "nsTArray.h"
1.17 +
1.18 +class nsIAtom;
1.19 +class nsIDOMDocument;
1.20 +
1.21 +class txUint32Array : public nsTArray<uint32_t>
1.22 +{
1.23 +public:
1.24 + bool AppendValue(uint32_t aValue)
1.25 + {
1.26 + return AppendElement(aValue) != nullptr;
1.27 + }
1.28 + bool RemoveValueAt(uint32_t aIndex)
1.29 + {
1.30 + if (aIndex < Length()) {
1.31 + RemoveElementAt(aIndex);
1.32 + }
1.33 + return true;
1.34 + }
1.35 + uint32_t ValueAt(uint32_t aIndex) const
1.36 + {
1.37 + return (aIndex < Length()) ? ElementAt(aIndex) : 0;
1.38 + }
1.39 +};
1.40 +
1.41 +class txXPathTreeWalker
1.42 +{
1.43 +public:
1.44 + txXPathTreeWalker(const txXPathTreeWalker& aOther);
1.45 + explicit txXPathTreeWalker(const txXPathNode& aNode);
1.46 +
1.47 + bool getAttr(nsIAtom* aLocalName, int32_t aNSID, nsAString& aValue) const;
1.48 + int32_t getNamespaceID() const;
1.49 + uint16_t getNodeType() const;
1.50 + void appendNodeValue(nsAString& aResult) const;
1.51 + void getNodeName(nsAString& aName) const;
1.52 +
1.53 + void moveTo(const txXPathTreeWalker& aWalker);
1.54 +
1.55 + void moveToRoot();
1.56 + bool moveToParent();
1.57 + bool moveToElementById(const nsAString& aID);
1.58 + bool moveToFirstAttribute();
1.59 + bool moveToNextAttribute();
1.60 + bool moveToNamedAttribute(nsIAtom* aLocalName, int32_t aNSID);
1.61 + bool moveToFirstChild();
1.62 + bool moveToLastChild();
1.63 + bool moveToNextSibling();
1.64 + bool moveToPreviousSibling();
1.65 +
1.66 + bool isOnNode(const txXPathNode& aNode) const;
1.67 +
1.68 + const txXPathNode& getCurrentPosition() const;
1.69 +
1.70 +private:
1.71 + txXPathNode mPosition;
1.72 +
1.73 + bool moveToValidAttribute(uint32_t aStartIndex);
1.74 + bool moveToSibling(int32_t aDir);
1.75 +
1.76 + uint32_t mCurrentIndex;
1.77 + txUint32Array mDescendants;
1.78 +};
1.79 +
1.80 +class txXPathNodeUtils
1.81 +{
1.82 +public:
1.83 + static bool getAttr(const txXPathNode& aNode, nsIAtom* aLocalName,
1.84 + int32_t aNSID, nsAString& aValue);
1.85 + static already_AddRefed<nsIAtom> getLocalName(const txXPathNode& aNode);
1.86 + static nsIAtom* getPrefix(const txXPathNode& aNode);
1.87 + static void getLocalName(const txXPathNode& aNode, nsAString& aLocalName);
1.88 + static void getNodeName(const txXPathNode& aNode,
1.89 + nsAString& aName);
1.90 + static int32_t getNamespaceID(const txXPathNode& aNode);
1.91 + static void getNamespaceURI(const txXPathNode& aNode, nsAString& aURI);
1.92 + static uint16_t getNodeType(const txXPathNode& aNode);
1.93 + static void appendNodeValue(const txXPathNode& aNode, nsAString& aResult);
1.94 + static bool isWhitespace(const txXPathNode& aNode);
1.95 + static txXPathNode* getOwnerDocument(const txXPathNode& aNode);
1.96 + static int32_t getUniqueIdentifier(const txXPathNode& aNode);
1.97 + static nsresult getXSLTId(const txXPathNode& aNode,
1.98 + const txXPathNode& aBase, nsAString& aResult);
1.99 + static void release(txXPathNode* aNode);
1.100 + static void getBaseURI(const txXPathNode& aNode, nsAString& aURI);
1.101 + static int comparePosition(const txXPathNode& aNode,
1.102 + const txXPathNode& aOtherNode);
1.103 + static bool localNameEquals(const txXPathNode& aNode,
1.104 + nsIAtom* aLocalName);
1.105 + static bool isRoot(const txXPathNode& aNode);
1.106 + static bool isElement(const txXPathNode& aNode);
1.107 + static bool isAttribute(const txXPathNode& aNode);
1.108 + static bool isProcessingInstruction(const txXPathNode& aNode);
1.109 + static bool isComment(const txXPathNode& aNode);
1.110 + static bool isText(const txXPathNode& aNode);
1.111 + static inline bool isHTMLElementInHTMLDocument(const txXPathNode& aNode)
1.112 + {
1.113 + if (!aNode.isContent()) {
1.114 + return false;
1.115 + }
1.116 + nsIContent* content = aNode.Content();
1.117 + return content->IsHTML() && content->IsInHTMLDocument();
1.118 + }
1.119 +};
1.120 +
1.121 +class txXPathNativeNode
1.122 +{
1.123 +public:
1.124 + static txXPathNode* createXPathNode(nsIDOMNode* aNode,
1.125 + bool aKeepRootAlive = false);
1.126 + static txXPathNode* createXPathNode(nsIContent* aContent,
1.127 + bool aKeepRootAlive = false);
1.128 + static txXPathNode* createXPathNode(nsIDOMDocument* aDocument);
1.129 + static nsresult getNode(const txXPathNode& aNode, nsIDOMNode** aResult);
1.130 + static nsIContent* getContent(const txXPathNode& aNode);
1.131 + static nsIDocument* getDocument(const txXPathNode& aNode);
1.132 + static void addRef(const txXPathNode& aNode)
1.133 + {
1.134 + NS_ADDREF(aNode.mNode);
1.135 + }
1.136 + static void release(const txXPathNode& aNode)
1.137 + {
1.138 + nsINode *node = aNode.mNode;
1.139 + NS_RELEASE(node);
1.140 + }
1.141 +};
1.142 +
1.143 +inline const txXPathNode&
1.144 +txXPathTreeWalker::getCurrentPosition() const
1.145 +{
1.146 + return mPosition;
1.147 +}
1.148 +
1.149 +inline bool
1.150 +txXPathTreeWalker::getAttr(nsIAtom* aLocalName, int32_t aNSID,
1.151 + nsAString& aValue) const
1.152 +{
1.153 + return txXPathNodeUtils::getAttr(mPosition, aLocalName, aNSID, aValue);
1.154 +}
1.155 +
1.156 +inline int32_t
1.157 +txXPathTreeWalker::getNamespaceID() const
1.158 +{
1.159 + return txXPathNodeUtils::getNamespaceID(mPosition);
1.160 +}
1.161 +
1.162 +inline void
1.163 +txXPathTreeWalker::appendNodeValue(nsAString& aResult) const
1.164 +{
1.165 + txXPathNodeUtils::appendNodeValue(mPosition, aResult);
1.166 +}
1.167 +
1.168 +inline void
1.169 +txXPathTreeWalker::getNodeName(nsAString& aName) const
1.170 +{
1.171 + txXPathNodeUtils::getNodeName(mPosition, aName);
1.172 +}
1.173 +
1.174 +inline void
1.175 +txXPathTreeWalker::moveTo(const txXPathTreeWalker& aWalker)
1.176 +{
1.177 + nsINode *root = nullptr;
1.178 + if (mPosition.mRefCountRoot) {
1.179 + root = mPosition.Root();
1.180 + }
1.181 + mPosition.mIndex = aWalker.mPosition.mIndex;
1.182 + mPosition.mRefCountRoot = aWalker.mPosition.mRefCountRoot;
1.183 + mPosition.mNode = aWalker.mPosition.mNode;
1.184 + nsINode *newRoot = nullptr;
1.185 + if (mPosition.mRefCountRoot) {
1.186 + newRoot = mPosition.Root();
1.187 + }
1.188 + if (root != newRoot) {
1.189 + NS_IF_ADDREF(newRoot);
1.190 + NS_IF_RELEASE(root);
1.191 + }
1.192 +
1.193 + mCurrentIndex = aWalker.mCurrentIndex;
1.194 + mDescendants.Clear();
1.195 +}
1.196 +
1.197 +inline bool
1.198 +txXPathTreeWalker::isOnNode(const txXPathNode& aNode) const
1.199 +{
1.200 + return (mPosition == aNode);
1.201 +}
1.202 +
1.203 +/* static */
1.204 +inline int32_t
1.205 +txXPathNodeUtils::getUniqueIdentifier(const txXPathNode& aNode)
1.206 +{
1.207 + NS_PRECONDITION(!aNode.isAttribute(),
1.208 + "Not implemented for attributes.");
1.209 + return NS_PTR_TO_INT32(aNode.mNode);
1.210 +}
1.211 +
1.212 +/* static */
1.213 +inline void
1.214 +txXPathNodeUtils::release(txXPathNode* aNode)
1.215 +{
1.216 + NS_RELEASE(aNode->mNode);
1.217 +}
1.218 +
1.219 +/* static */
1.220 +inline bool
1.221 +txXPathNodeUtils::localNameEquals(const txXPathNode& aNode,
1.222 + nsIAtom* aLocalName)
1.223 +{
1.224 + if (aNode.isContent() &&
1.225 + aNode.Content()->IsElement()) {
1.226 + return aNode.Content()->NodeInfo()->Equals(aLocalName);
1.227 + }
1.228 +
1.229 + nsCOMPtr<nsIAtom> localName = txXPathNodeUtils::getLocalName(aNode);
1.230 +
1.231 + return localName == aLocalName;
1.232 +}
1.233 +
1.234 +/* static */
1.235 +inline bool
1.236 +txXPathNodeUtils::isRoot(const txXPathNode& aNode)
1.237 +{
1.238 + return !aNode.isAttribute() && !aNode.mNode->GetParentNode();
1.239 +}
1.240 +
1.241 +/* static */
1.242 +inline bool
1.243 +txXPathNodeUtils::isElement(const txXPathNode& aNode)
1.244 +{
1.245 + return aNode.isContent() &&
1.246 + aNode.Content()->IsElement();
1.247 +}
1.248 +
1.249 +
1.250 +/* static */
1.251 +inline bool
1.252 +txXPathNodeUtils::isAttribute(const txXPathNode& aNode)
1.253 +{
1.254 + return aNode.isAttribute();
1.255 +}
1.256 +
1.257 +/* static */
1.258 +inline bool
1.259 +txXPathNodeUtils::isProcessingInstruction(const txXPathNode& aNode)
1.260 +{
1.261 + return aNode.isContent() &&
1.262 + aNode.Content()->IsNodeOfType(nsINode::ePROCESSING_INSTRUCTION);
1.263 +}
1.264 +
1.265 +/* static */
1.266 +inline bool
1.267 +txXPathNodeUtils::isComment(const txXPathNode& aNode)
1.268 +{
1.269 + return aNode.isContent() &&
1.270 + aNode.Content()->IsNodeOfType(nsINode::eCOMMENT);
1.271 +}
1.272 +
1.273 +/* static */
1.274 +inline bool
1.275 +txXPathNodeUtils::isText(const txXPathNode& aNode)
1.276 +{
1.277 + return aNode.isContent() &&
1.278 + aNode.Content()->IsNodeOfType(nsINode::eTEXT);
1.279 +}
1.280 +
1.281 +#endif /* txXPathTreeWalker_h__ */
