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XalanDOMStringAllocator.hpp

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00001 /*
00002  * Copyright 1999-2004 The Apache Software Foundation.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #if !defined(XALANDOMSTRINGALLOCATOR_INCLUDE_GUARD_12455133)
00018 #define XALANDOMSTRINGALLOCATOR_INCLUDE_GUARD_12455133
00019 
00020 
00021 
00022 // Base include file.  Must be first.
00023 #include <xalanc/PlatformSupport/PlatformSupportDefinitions.hpp>
00024 
00025 
00026 
00027 #include <xalanc/PlatformSupport/ArenaAllocator.hpp>
00028 
00029 
00030 
00031 #include <xalanc/XalanDOM/XalanDOMString.hpp>
00032 
00033 
00034 
00035 XALAN_CPP_NAMESPACE_BEGIN
00036 
00037 
00038 
00039 class XALAN_PLATFORMSUPPORT_EXPORT XalanDOMStringAllocator
00040 {
00041 public:
00042 
00043     typedef XalanDOMString                  data_type;
00044     typedef data_type::size_type            data_type_size_type;
00045 
00046 #if defined(XALAN_NO_DEFAULT_TEMPLATE_ARGUMENTS)
00047     typedef ArenaBlock<data_type>           ArenaBlockType;
00048 
00049     typedef ArenaAllocator<data_type,
00050                            ArenaBlockType>  ArenaAllocatorType;
00051 #else
00052     typedef ArenaAllocator<data_type>       ArenaAllocatorType;
00053 #endif
00054 
00055     typedef ArenaAllocatorType::size_type   size_type;
00056 
00057     enum { eDefaultBlockSize = 32 };
00058 
00059 
00065     XalanDOMStringAllocator(size_type   theBlockCount);
00066 
00067     ~XalanDOMStringAllocator();
00068 
00077     data_type*
00078     create(
00079             const char*             theString,
00080 #if defined(_MSC_VER)
00081             // $$$ ToDo: Some strange bug in MSVC++ complains when using data_type::npos here.
00082             data_type_size_type     theCount = data_type_size_type(-1));
00083 #else
00084     data_type_size_type     theCount = data_type_size_type(data_type::npos));
00085 #endif
00086 
00096     data_type*
00097     create(
00098             const data_type&        theSource,
00099             data_type_size_type     theStartPosition = 0,
00100             data_type_size_type     theCount = data_type_size_type(data_type::npos));
00101 
00110     data_type*
00111     create(
00112             const XalanDOMChar*     theString,
00113             data_type_size_type     theCount = data_type_size_type(data_type::npos));
00114 
00123     data_type*
00124     create(
00125             data_type_size_type     theCount,
00126             XalanDOMChar            theChar);
00127 
00131     bool
00132     ownsObject(const data_type*     theObject)
00133     {
00134         return m_allocator.ownsObject(theObject);
00135     }
00136 
00140     void
00141     reset()
00142     {
00143         m_allocator.reset();
00144     }
00145 
00151     size_type
00152     getBlockCount() const
00153     {
00154         return m_allocator.getBlockCount();
00155     }
00156 
00163     size_type
00164     getBlockSize() const
00165     {
00166         return m_allocator.getBlockSize();
00167     }
00168 
00169 private:
00170 
00171     // Not implemented...
00172     XalanDOMStringAllocator(const XalanDOMStringAllocator&);
00173 
00174     XalanDOMStringAllocator&
00175     operator=(const XalanDOMStringAllocator&);
00176 
00177     // Data members...
00178     ArenaAllocatorType  m_allocator;
00179 };
00180 
00181 
00182 
00183 XALAN_CPP_NAMESPACE_END
00184 
00185 
00186 
00187 #endif  // XALANDOMSTRINGALLOCATOR_INCLUDE_GUARD_12455133

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Xalan-C++ XSLT Processor Version 1.8
Copyright © 1999-2004 The Apache Software Foundation. All Rights Reserved.