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# XalanAutoPtr.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 #if !defined(XALANAUTOPTR_HEADER_GUARD_1357924680)
    00017 #define XALANAUTOPTR_HEADER_GUARD_1357924680
    00018
    00019
    00020
    00021 // Base include file.  Must be first.
    00022 #include <xalanc/PlatformSupport/PlatformSupportDefinitions.hpp>
    00023
    00024
    00025
    00026 #include <cstddef>
    00027
    00028
    00029
    00030 XALAN_CPP_NAMESPACE_BEGIN
    00031
    00032
    00033
    00034 // We're using our own auto_ptr-like class due to wide
    00035 // variations amongst the varous platforms we have to
    00036 // support
    00037 template<class Type>
    00038 class XalanAutoPtr
    00039 {
    00040 public:
    00041
    00042     XalanAutoPtr(Type*  thePointer = 0) :
    00043         m_pointer(thePointer)
    00044     {
    00045     }
    00046
    00047     XalanAutoPtr(const XalanAutoPtr<Type>&  theSource) :
    00048         m_pointer(((XalanAutoPtr<Type>&)theSource).release())
    00049     {
    00050     }
    00051
    00052     XalanAutoPtr<Type>&
    00053     operator=(XalanAutoPtr<Type>&   theRHS)
    00054     {
    00055         if (this != &theRHS)
    00056         {
    00057             // This test ought not to be necessary, but
    00058             // MSVC 6.0 calls delete, which checks for 0.
    00059             // The problem with that is the locking is
    00060             // extremely expensive.
    00061             if (m_pointer != 0)
    00062             {
    00063                 delete m_pointer;
    00064             }
    00065
    00066             m_pointer = theRHS.release();
    00067         }
    00068
    00069         return *this;
    00070     }
    00071
    00072     ~XalanAutoPtr()
    00073     {
    00074         // See note in operator=() about this...
    00075         if (m_pointer != 0)
    00076         {
    00077             delete m_pointer;
    00078         }
    00079     }
    00080
    00081     Type&
    00082     operator*() const
    00083     {
    00084         return *m_pointer;
    00085     }
    00086
    00087     Type*
    00088     operator->() const
    00089     {
    00090         return m_pointer;
    00091     }
    00092
    00093     Type*
    00094     get() const
    00095     {
    00096         return m_pointer;
    00097     }
    00098
    00099     Type*
    00100     release()
    00101     {
    00102         Type* const temp = m_pointer;
    00103
    00104         m_pointer = 0;
    00105
    00106         return temp;
    00107     }
    00108
    00109     void
    00110     reset(Type*     thePointer = 0)
    00111     {
    00112         // See note in operator=() about this...
    00113         if (m_pointer != 0)
    00114         {
    00115             delete m_pointer;
    00116         }
    00117
    00118         m_pointer = thePointer;
    00119     }
    00120
    00121 private:
    00122
    00123     Type*   m_pointer;
    00124 };
    00125
    00126
    00127
    00128 // A class similar to XalanAutoPtr, but for arrays.
    00129 template<class Type>
    00130 class XalanArrayAutoPtr
    00131 {
    00132 public:
    00133
    00134     XalanArrayAutoPtr(Type*     thePointer = 0) :
    00135         m_pointer(thePointer)
    00136     {
    00137     }
    00138
    00139     XalanArrayAutoPtr(const XalanArrayAutoPtr<Type>&    theSource) :
    00140         m_pointer(((XalanArrayAutoPtr<Type>&)theSource).release())
    00141     {
    00142     }
    00143
    00144     XalanArrayAutoPtr<Type>&
    00145     operator=(XalanArrayAutoPtr<Type>&  theRHS)
    00146     {
    00147         if (this != &theRHS)
    00148         {
    00149             // This test ought not to be necessary, but
    00150             // MSVC 6.0 calls delete, which checks for 0.
    00151             // The problem with that is the locking is
    00152             // extremely expensive.
    00153             if (m_pointer != 0)
    00154             {
    00155                 delete [] m_pointer;
    00156             }
    00157
    00158             m_pointer = theRHS.release();
    00159         }
    00160
    00161         return *this;
    00162     }
    00163
    00164     ~XalanArrayAutoPtr()
    00165     {
    00166         // See note in operator=() about this...
    00167         if (m_pointer != 0)
    00168         {
    00169             delete [] m_pointer;
    00170         }
    00171     }
    00172
    00173     Type&
    00174     operator*() const
    00175     {
    00176         return *m_pointer;
    00177     }
    00178
    00179     Type&
    00180 #if defined(XALAN_STRICT_ANSI_HEADERS)
    00181     operator[](std::size_t  index) const
    00182 #else
    00183     operator[](size_t   index) const
    00184 #endif
    00185     {
    00186         return m_pointer[index];
    00187     }
    00188
    00189     Type*
    00190     get() const
    00191     {
    00192         return m_pointer;
    00193     }
    00194
    00195     Type*
    00196     release()
    00197     {
    00198         Type* const temp = m_pointer;
    00199
    00200         m_pointer = 0;
    00201
    00202         return temp;
    00203     }
    00204
    00205     void
    00206     reset(Type*     thePointer = 0)
    00207     {
    00208         // See note in operator=() about this...
    00209         if (m_pointer != 0)
    00210         {
    00211             delete [] m_pointer;
    00212         }
    00213
    00214         m_pointer = thePointer;
    00215     }
    00216
    00217 private:
    00218
    00219     Type*   m_pointer;
    00220 };
    00221
    00222
    00223
    00224 XALAN_CPP_NAMESPACE_END
    00225
    00226
    00227
    00228 #endif  // if !defined(XALANAUTOPTR_HEADER_GUARD_1357924680)

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Xalan-C++ XSLT Processor Version 1.9 Copyright © 1999-2004 The Apache Software Foundation. All Rights Reserved.