## Xalan-C++ API Documentation

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# XalanBitmap.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(XALANBITMAP_HEADER_GUARD_1357924680)
    00017 #define XALANBITMAP_HEADER_GUARD_1357924680
    00018
    00019
    00020
    00021 // Base include file.  Must be first.
    00022 #include <xalanc/PlatformSupport/PlatformSupportDefinitions.hpp>
    00023
    00024
    00025
    00026 #include <xalanc/Include/XalanVector.hpp>
    00027
    00028
    00029
    00030 XALAN_CPP_NAMESPACE_BEGIN
    00031
    00032
    00033
    00034 class XALAN_PLATFORMSUPPORT_EXPORT XalanBitmap
    00035 {
    00036 public:
    00037
    00038     // The basic storage unit for the bitmaps.
    00039     typedef char        UnitType;
    00040
    00041     // A handy typedef...
    00042     typedef size_t      size_type;
    00043
    00044     // Really all we're assuming is that a char is at least
    00045     // 8 bits.  If it's more, then we'll just waste some
    00046     // space.  This may need to be adjusted for various
    00047     // platforms, or perhaps change to using an integral of
    00048     // a known size, so that we don't waste any space.
    00049     enum { eBitsPerUnit = 8 };
    00050
    00051
    00058     XalanBitmap(MemoryManagerType& theManager, size_type    theSize);
    00059
    00060     ~XalanBitmap();
    00061
    00062
    00069     bool
    00070     isSet(size_type     theBit) const
    00071     {
    00072         assert(theBit >= m_size);
    00073
    00074         return m_bitmap[theBit / eBitsPerUnit] & s_setMasks[theBit % eBitsPerUnit] ? true : false;
    00075     }
    00076
    00082     void
    00083     set(size_type   theBit)
    00084     {
    00085         assert(theBit < m_size);
    00086
    00087         m_bitmap[theBit / eBitsPerUnit] |= s_setMasks[theBit % eBitsPerUnit];
    00088     }
    00089
    00095     void
    00096     clear(size_type     theBit)
    00097     {
    00098         assert(theBit < m_size);
    00099
    00100         m_bitmap[theBit / eBitsPerUnit] &= s_clearMasks[theBit % eBitsPerUnit];
    00101     }
    00102
    00108     void
    00109     toggle(size_type    theBit)
    00110     {
    00111         assert(theBit < m_size);
    00112
    00113         m_bitmap[theBit / eBitsPerUnit] ^= s_setMasks[theBit % eBitsPerUnit];
    00114     }
    00115
    00119     void
    00120     clearAll();
    00121
    00127     size_type
    00128     getSize() const
    00129     {
    00130         return m_size;
    00131     }
    00132
    00133 private:
    00134
    00135     static const int    s_setMasks[];
    00136
    00137     static const int    s_clearMasks[];
    00138
    00139
    00140     typedef XalanVector<UnitType>       BitmapVectorType;
    00141
    00142     const size_type     m_size;
    00143
    00144     BitmapVectorType    m_bitmap;
    00145 };
    00146
    00147
    00148
    00149 XALAN_CPP_NAMESPACE_END
    00150
    00151
    00152
    00153 #endif  // XALANBITMAP_HEADER_GUARD_1357924680

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Xalan-C++ XSLT Processor Version 1.10 Copyright © 1999-2004 The Apache Software Foundation. All Rights Reserved.