src/XPath/XTokenStringAdapterAllocator.hpp

/*
 * The Apache Software License, Version 1.1
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 * Copyright (c) 2000 The Apache Software Foundation.  All rights 
 * reserved.
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 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com.  For more
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 */

#if !defined(XTOKENSTRINGADAPTERALLOCATOR_INCLUDE_GUARD_1357924680)
#define XTOKENSTRINGADAPTERALLOCATOR_INCLUDE_GUARD_1357924680



// Base include file.  Must be first.
#include <XPath/XPathDefinitions.hpp>



#include <XPath/XTokenStringAdapter.hpp>



#include <PlatformSupport/ReusableArenaAllocator.hpp>



class XALAN_XPATH_EXPORT XTokenStringAdapterAllocator
{
public:

	typedef XTokenStringAdapter						object_type;

	typedef ReusableArenaAllocator<object_type>		ArenaAllocatorType;
	typedef ArenaAllocatorType::size_type			size_type;

	/**
	 * Construct an instance that will allocate blocks of the specified size.
	 *
	 * @param theBlockSize The block size.
	 */
	XTokenStringAdapterAllocator(size_type	theBlockCount);

	~XTokenStringAdapterAllocator();

	/**
	 * Create an XTokenStringAdapter object from an XToken.
	 * 
	 * @param theXToken The source XToken
	 *
	 * @return a pointer to string
	 */
	object_type*
	create(const XToken&	theXToken);

	/**
	 * Clone an XTokenStringAdapter object.
	 * 
	 * @param value source XTokenStringAdapter
	 *
	 * @return pointer to an XTokenStringAdapter
	 */
	object_type*
	clone(const object_type&	value);

	/**
	 * Delete an XStringAdapter object from allocator.	 
	 */
	bool
	destroy(object_type*	theString);

	/**
	 * Determine if an object is owned by the allocator...
	 */
	bool
	ownsObject(const object_type*	theObject)
	{
		return m_allocator.ownsObject(theObject);
	}

	/**
	 * Delete all XStringAdapter objects from allocator.	 
	 */
	void 
	reset();

	/**
	 * Get size of an ArenaBlock, that is, the number
	 * of objects in each block.
	 *
	 * @return The size of the block
	 */
	size_type
	getBlockCount() const
	{
		return m_allocator.getBlockCount();
	}

	/**
	 * Get the number of ArenaBlocks currently allocated.
	 *
	 * @return The number of blocks.
	 */
	size_type
	getBlockSize() const
	{
		return m_allocator.getBlockSize();
	}

private:

	// Not implemented...
	XTokenStringAdapterAllocator(const XTokenStringAdapterAllocator&);

	XTokenStringAdapterAllocator&
	operator=(const XTokenStringAdapterAllocator&);

	// Data members...
	ArenaAllocatorType	m_allocator;
};



#endif	// XTOKENSTRINGADAPTERALLOCATOR_INCLUDE_GUARD_1357924680