libxalan-c-dev 1.11-6 / usr / include / xalanc / XPath / XNumberAllocator.hpp

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/usr/include/xalanc/XPath/XNumberAllocator.hpp is in libxalan-c-dev 1.11-6.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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(XNUMBERALLOCATOR_INCLUDE_GUARD_135792455)
#define XNUMBERALLOCATOR_INCLUDE_GUARD_135792455



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



#include <xalanc/XPath/XNumber.hpp>



#include <xalanc/PlatformSupport/ReusableArenaAllocator.hpp>



XALAN_CPP_NAMESPACE_BEGIN



class XALAN_XPATH_EXPORT XNumberAllocator
{
public:

    typedef XNumber         number_type;

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

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

    ~XNumberAllocator();

    /**
     * Create an XNumber object using allocator from a string.
     * 
     * @param theString     source number
     *
     * @return a pointer to a number
     */
    number_type*
    createNumber(double     theNumber);


    /**
     * Delete an XNumber object from allocator.  
     */
    bool
    destroy(number_type*    theNumber);

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

    /**
     * Delete all XNumber 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...
    XNumberAllocator(const XNumberAllocator&);

    XNumberAllocator&
    operator=(const XNumberAllocator&);

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



XALAN_CPP_NAMESPACE_END



#endif  // XNUMBERALLOCATOR_INCLUDE_GUARD_135792455

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