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XalanDOMStringPool.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
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00004  *
00005  * Copyright (c) 1999-2000 The Apache Software Foundation.  All rights 
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00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
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00012  * 1. Redistributions of source code must retain the above copyright
00013  *    notice, this list of conditions and the following disclaimer. 
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00015  * 2. Redistributions in binary form must reproduce the above copyright
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00019  *
00020  * 3. The end-user documentation included with the redistribution,
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00022  *       "This product includes software developed by the
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00024  *    Alternately, this acknowledgment may appear in the software itself,
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00049  *
00050  * This software consists of voluntary contributions made by many
00051  * individuals on behalf of the Apache Software Foundation and was
00052  * originally based on software copyright (c) 1999, International
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00057 #if !defined(XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680)
00058 #define XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680
00059 
00060 
00061 
00062 // Base include file.  Must be first.
00063 #include <PlatformSupport/PlatformSupportDefinitions.hpp>
00064 
00065 
00066 
00067 #include <deque>
00068 #include <map>
00069 
00070 
00071 
00072 #include <PlatformSupport/ArenaAllocator.hpp>
00073 #include <PlatformSupport/DOMStringHelper.hpp>
00074 #include <PlatformSupport/XalanDOMStringHashTable.hpp>
00075 
00076 
00077 
00078 class XALAN_PLATFORMSUPPORT_EXPORT XalanDOMStringPool
00079 {
00080 public:
00081 
00082     enum { eDefaultBlockSize = 1024,
00083            eDefaultBucketCount = XalanDOMStringHashTable::eDefaultBucketCount,
00084            eDefaultBucketSize = XalanDOMStringHashTable::eDefaultBucketSize };
00085 
00093     explicit
00094     XalanDOMStringPool(
00095             unsigned int    theBlockSize = eDefaultBlockSize,
00096             unsigned int    theBucketCount = eDefaultBucketCount,
00097             unsigned int    theBucketSize = eDefaultBucketSize);
00098 
00099     virtual
00100     ~XalanDOMStringPool();
00101 
00106     virtual void
00107     clear();
00108 
00114     virtual unsigned int
00115     size() const;
00116 
00123     virtual const XalanDOMString&
00124     get(const XalanDOMString&   theString);
00125 
00133     virtual const XalanDOMString&
00134     get(
00135             const XalanDOMChar*     theString,
00136             unsigned int            theLength = unsigned(-1));
00137 
00144     const XalanDOMStringHashTable&
00145     getHashTable() const
00146     {
00147         return m_hashTable;
00148     }
00149 
00150 private:
00151 
00152     // Not implemented, for now...
00153     XalanDOMStringPool(const XalanDOMStringPool&);
00154 
00155     XalanDOMStringPool&
00156     operator=(const XalanDOMStringPool&);
00157 
00158     bool
00159     operator==(const XalanDOMStringPool&) const;
00160 
00161 #if defined(XALAN_NO_DEFAULT_TEMPLATE_ARGUMENTS)
00162     typedef ArenaBlock<XalanDOMString>      ArenaBlockType;
00163 
00164     typedef ArenaAllocator<XalanDOMString,
00165                            ArenaBlockType>  ArenaAllocatorType;
00166 #else
00167     typedef ArenaAllocator<XalanDOMString>  ArenaAllocatorType;
00168 #endif
00169 
00170     // Data members...
00171     ArenaAllocatorType              m_stringAllocator;
00172 
00173     unsigned int                    m_stringCount;
00174 
00175     XalanDOMStringHashTable         m_hashTable;
00176 
00177     static const XalanDOMString     s_emptyString;
00178 };
00179 
00180 
00181 
00182 #endif  // !defined(XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680)

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