libxalan-c-dev 1.11-3 / usr / include / xalanc / XSLT / XalanElemEmptyAllocator.hpp

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/usr/include/xalanc/XSLT/XalanElemEmptyAllocator.hpp is in libxalan-c-dev 1.11-3.

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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(XALANELEMEMPTYALLOCATOR_INCLUDE_GUARD_12455133)
#define XALANELEMEMPTYALLOCATOR_INCLUDE_GUARD_12455133



// Base include file.  Must be first.
#include <xalanc/XSLT/XSLTDefinitions.hpp>



#include <xalanc/XSLT/ElemEmpty.hpp>



#include <xalanc/PlatformSupport/ReusableArenaAllocator.hpp>



XALAN_CPP_NAMESPACE_BEGIN



class XALAN_XSLT_EXPORT XalanElemEmptyAllocator
{
public:

    typedef ElemEmpty                           data_type;

    typedef ReusableArenaAllocator<data_type>   ArenaAllocatorType;

    typedef ArenaAllocatorType::size_type       size_type;

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

    ~XalanElemEmptyAllocator();
    
    /**
     * Construct an instance
     * 
     * @param constructionContext The current construction context
     * @param stylesheetTree The stylesheet containing element
     * @param lineNumber The line number in the document
     * @param columnNumber The column number in the document
     * @param elementName The name of element.  Can be 0.
     *
     * @return A pointer to the new instance.
     */
    data_type*
    create(
            StylesheetConstructionContext&  constructionContext,
            Stylesheet&                     stylesheetTree,
            XalanFileLoc                    lineNumber,
            XalanFileLoc                    columnNumber,
            const XalanDOMString*           elementName = 0);

    /**
     * Construct an instance
     * 
     * @param constructionContext The current construction context
     * @param stylesheetTree The stylesheet containing element
     * @param elementName The name of element.  Can be 0.
     */
    data_type*
    create(
            StylesheetConstructionContext&  constructionContext,
            Stylesheet&                     stylesheetTree,
            const XalanDOMString*           elementName = 0);

    /**
     * Destroy an instance previously created.
     *
     * @param theObject A pointer to the instance to destroy.
     *
     * @return true if the instance was destroyed, false if not.
     */
    bool
    destroy(data_type*  theObject)
    {
        return m_allocator.destroyObject(theObject);
    }

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

    /**
     * Delete all objects from the allocator.    
     */ 
    void
    reset()
    {
        m_allocator.reset();
    }

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

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

private:

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

    XalanElemEmptyAllocator&
    operator=(const XalanElemEmptyAllocator&);

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



XALAN_CPP_NAMESPACE_END



#endif  // XALANELEMEMPTYALLOCATOR_INCLUDE_GUARD_12455133

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