/usr/include/xalanc/DOMSupport/TreeWalker.hpp is in libxalan110-dev 1.10-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if !defined(TREEWALKER_HEADER_GUARD_1357924680)
#define TREEWALKER_HEADER_GUARD_1357924680
// Base include file. Must be first.
#include <xalanc/DOMSupport/DOMSupportDefinitions.hpp>
XALAN_CPP_NAMESPACE_BEGIN
class XalanNode;
class XALAN_DOMSUPPORT_EXPORT TreeWalker
{
public:
/**
* Constructor.
*/
TreeWalker();
virtual
~TreeWalker();
/**
* Perform a document-order traversal.
*
* Derived classes and stop the traversal by returning
* true from startNode() or endNode(). If that happens,
* the function will return the next node in document
* order. If desired, the caller can start traversing
* the tree again from that point. Note that terminal
* nodes will always have startNode() and endNode()
* called before the traversal terminates.
*
* @param pos The node in the tree with which to start the walk
*
* @return 0 if the traversal completes, or the next node if the traversal doesn't complete.
*/
const XalanNode*
traverse(const XalanNode* pos);
/**
* Perform a document-order traversal.
*
* Derived classes and stop the traversal by returning
* true from startNode() or endNode(). If that happens,
* the function will return the next node in document
* order. If desired, the caller can start traversing
* the tree again from that point. Note that terminal
* nodes will always have startNode() and endNode()
* called before the traversal terminates.
*
* @param pos The node in the tree with which to start the walk
*
* @return 0 if the traversal completes, or the next node if the traversal doesn't complete.
*/
XalanNode*
traverse(XalanNode* pos);
/**
* Perform a document-order traversal stopping at the
* provided parent node.
*
* Derived classes and stop the traversal by returning
* true from startNode() or endNode(). If that happens,
* the function will return the next node in document
* order. If desired, the caller can start traversing
* the tree again from that point. Note that terminal
* nodes will always have startNode() and endNode()
* called before the traversal terminates.
*
* @param pos The node in the tree with which to start the walk
* @param parent The parent of pos. Note that for multiple calls that continue the traversal, this node must remain the same.
*
* @return parent if the traversal completes, or the next node if the traversal doesn't complete.
*/
const XalanNode*
traverse(
const XalanNode* pos,
const XalanNode* parent);
/**
* Perform a document-order traversal stopping at the
* provided parent node.
*
* Derived classes and stop the traversal by returning
* true from startNode() or endNode(). If that happens,
* the function will return the next node in document
* order. If desired, the caller can start traversing
* the tree again from that point. Note that terminal
* nodes will always have startNode() and endNode()
* called before the traversal terminates.
*
* @param pos The node in the tree with which to start the walk
* @param parent The parent of pos. Note that for multiple calls that continue the traversal, this node must remain the same.
*
* @return parent if the traversal completes, or the next node if the traversal doesn't complete.
*/
XalanNode*
traverse(
XalanNode* pos,
XalanNode* parent);
/**
* Perform a pre-order traversal.
*
* @param pos starting node
*/
virtual void
traverseSubtree(const XalanNode* pos);
/**
* Perform a pre-order traversal.
*
* @param pos starting node
*/
virtual void
traverseSubtree(XalanNode* pos);
protected:
/**
* Called when first walking a node
*
* @param node The node
*
* @return return false if the walk should continue, or true if it should not.
*/
virtual bool
startNode(const XalanNode* node) = 0;
/**
* Called when first walking a node
*
* @param node The node
*
* @return return false if the walk should continue, or true if it should not.
*/
virtual bool
startNode(XalanNode* node) = 0;
/**
* Called when leaving a node
*
* @param node The node
*
* @return return false if the walk should continue, or true if it should not.
*/
virtual bool
endNode(const XalanNode* node) = 0;
/**
* Called when leaving a node
*
* @param node The node
*
* @return return false if the walk should continue, or true if it should not.
*/
virtual bool
endNode(XalanNode* node) = 0;
private:
};
XALAN_CPP_NAMESPACE_END
#endif // TREEWALKER_HEADER_GUARD_1357924680
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