CMStateSet.hpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: CMStateSet.hpp,v $
- * Revision 1.5 2003/05/16 21:43:20 knoaman
- * Memory manager implementation: Modify constructors to pass in the memory manager.
- *
- * Revision 1.4 2003/05/15 18:48:27 knoaman
- * Partial implementation of the configurable memory manager.
- *
- * Revision 1.3 2002/11/04 14:54:58 tng
- * C++ Namespace Support.
- *
- * Revision 1.2 2002/07/16 12:50:08 tng
- * [Bug 10651] CMStateSet.hpp includes both memory.h and string.h.
- *
- * Revision 1.1.1.1 2002/02/01 22:22:38 peiyongz
- * sane_include
- *
- * Revision 1.5 2001/08/16 21:51:43 peiyongz
- * hashCode() added
- *
- * Revision 1.4 2001/05/11 13:27:17 tng
- * Copyright update.
- *
- * Revision 1.3 2001/05/03 21:02:28 tng
- * Schema: Add SubstitutionGroupComparator and update exception messages. By Pei Yong Zhang.
- *
- * Revision 1.2 2001/02/27 14:48:46 tng
- * Schema: Add CMAny and ContentLeafNameTypeVector, by Pei Yong Zhang
- *
- * Revision 1.1 2001/02/16 14:17:29 tng
- * Schema: Move the common Content Model files that are shared by DTD
- * and schema from 'DTD' folder to 'common' folder. By Pei Yong Zhang.
- *
- * Revision 1.4 2000/03/02 19:55:37 roddey
- * This checkin includes many changes done while waiting for the
- * 1.1.0 code to be finished. I can't list them all here, but a list is
- * available elsewhere.
- *
- * Revision 1.3 2000/02/24 20:16:48 abagchi
- * Swat for removing Log from API docs
- *
- * Revision 1.2 2000/02/09 21:42:36 abagchi
- * Copyright swat
- *
- * Revision 1.1.1.1 1999/11/09 01:03:06 twl
- * Initial checkin
- *
- * Revision 1.3 1999/11/08 20:45:36 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- // DESCRIPTION:
- //
- // This class is a specialized bitset class for the content model code of
- // the validator. It assumes that its never called with two objects of
- // different bit counts, and that bit sets smaller than 64 bits are far
- // and away the most common. So it can be a lot more optimized than a general
- // purpose utility bitset class
- //
- #if !defined(CMSTATESET_HPP)
- #define CMSTATESET_HPP
- #include <xercesc/util/ArrayIndexOutOfBoundsException.hpp>
- #include <xercesc/util/RuntimeException.hpp>
- #include <xercesc/util/PlatformUtils.hpp>
- #include <xercesc/framework/MemoryManager.hpp>
- #include <string.h>
- XERCES_CPP_NAMESPACE_BEGIN
- class CMStateSet : public XMemory
- {
- public :
- // -----------------------------------------------------------------------
- // Constructors and Destructor
- // -----------------------------------------------------------------------
- CMStateSet( const unsigned int bitCount
- , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager) :
- fBitCount(bitCount)
- , fByteArray(0)
- , fMemoryManager(manager)
- {
- //
- // See if we need to allocate the byte array or whether we can live
- // within the 64 bit high performance scheme.
- //
- if (fBitCount > 64)
- {
- fByteCount = fBitCount / 8;
- if (fBitCount % 8)
- fByteCount++;
- fByteArray = (XMLByte*) fMemoryManager->allocate(fByteCount*sizeof(XMLByte)); //new XMLByte[fByteCount];
- }
- // Init all the bits to zero
- zeroBits();
- }
- /*
- * This method with the 'for' statement (commented out) cannot be made inline
- * because the antiquated CC (CFront) compiler under HPUX 10.20 does not allow
- * the 'for' statement inside any inline method. Unfortunately,
- * we have to support it. So instead, we use memcpy().
- */
- CMStateSet(const CMStateSet& toCopy) :
- fBitCount(toCopy.fBitCount)
- , fByteArray(0)
- , fMemoryManager(toCopy.fMemoryManager)
- {
- //
- // See if we need to allocate the byte array or whether we can live
- // within the 64 bit high performance scheme.
- //
- if (fBitCount > 64)
- {
- fByteCount = fBitCount / 8;
- if (fBitCount % 8)
- fByteCount++;
- fByteArray = (XMLByte*) fMemoryManager->allocate(fByteCount*sizeof(XMLByte)); //new XMLByte[fByteCount];
- memcpy((void *) fByteArray,
- (const void *) toCopy.fByteArray,
- fByteCount * sizeof(XMLByte));
- // for (unsigned int index = 0; index < fByteCount; index++)
- // fByteArray[index] = toCopy.fByteArray[index];
- }
- else
- {
- fBits1 = toCopy.fBits1;
- fBits2 = toCopy.fBits2;
- }
- }
- ~CMStateSet()
- {
- if (fByteArray)
- fMemoryManager->deallocate(fByteArray); //delete [] fByteArray;
- }
- // -----------------------------------------------------------------------
- // Set manipulation methods
- // -----------------------------------------------------------------------
- void operator&=(const CMStateSet& setToAnd)
- {
- if (fBitCount < 65)
- {
- fBits1 &= setToAnd.fBits1;
- fBits2 &= setToAnd.fBits2;
- }
- else
- {
- for (unsigned int index = 0; index < fByteCount; index++)
- fByteArray[index] &= setToAnd.fByteArray[index];
- }
- }
- void operator|=(const CMStateSet& setToOr)
- {
- if (fBitCount < 65)
- {
- fBits1 |= setToOr.fBits1;
- fBits2 |= setToOr.fBits2;
- }
- else
- {
- for (unsigned int index = 0; index < fByteCount; index++)
- fByteArray[index] |= setToOr.fByteArray[index];
- }
- }
- bool operator==(const CMStateSet& setToCompare) const
- {
- if (fBitCount != setToCompare.fBitCount)
- return false;
- if (fBitCount < 65)
- {
- return ((fBits1 == setToCompare.fBits1)
- && (fBits2 == setToCompare.fBits2));
- }
- for (unsigned int index = 0; index < fByteCount; index++)
- {
- if (fByteArray[index] != setToCompare.fByteArray[index])
- return false;
- }
- return true;
- }
- CMStateSet& operator=(const CMStateSet& srcSet)
- {
- if (this == &srcSet)
- return *this;
- // They have to be the same size
- if (fBitCount != srcSet.fBitCount)
- ThrowXML(RuntimeException, XMLExcepts::Bitset_NotEqualSize);
- if (fBitCount < 65)
- {
- fBits1 = srcSet.fBits1;
- fBits2 = srcSet.fBits2;
- }
- else
- {
- for (unsigned int index = 0; index < fByteCount; index++)
- fByteArray[index] = srcSet.fByteArray[index];
- }
- return *this;
- }
- bool getBit(const unsigned int bitToGet) const
- {
- if (bitToGet >= fBitCount)
- ThrowXML(ArrayIndexOutOfBoundsException, XMLExcepts::Bitset_BadIndex);
- if (fBitCount < 65)
- {
- unsigned int mask = (0x1UL << (bitToGet % 32));
- if (bitToGet < 32)
- return ((fBits1 & mask) != 0);
- else
- return ((fBits2 & mask) != 0);
- }
- // Create the mask and byte values
- const XMLByte mask1 = XMLByte(0x1 << (bitToGet % 8));
- const unsigned int byteOfs = bitToGet >> 3;
- // And access the right bit and byte
- return ((fByteArray[byteOfs] & mask1) != 0);
- }
- bool isEmpty() const
- {
- if (fBitCount < 65)
- return ((fBits1 == 0) && (fBits2 == 0));
- for (unsigned int index = 0; index < fByteCount; index++)
- {
- if (fByteArray[index] != 0)
- return false;
- }
- return true;
- }
- void setBit(const unsigned int bitToSet)
- {
- if (bitToSet >= fBitCount)
- ThrowXML(ArrayIndexOutOfBoundsException, XMLExcepts::Bitset_BadIndex);
- if (fBitCount < 65)
- {
- const unsigned int mask = (0x1UL << (bitToSet % 32));
- if (bitToSet < 32)
- {
- fBits1 &= ~mask;
- fBits1 |= mask;
- }
- else
- {
- fBits2 &= ~mask;
- fBits2 |= mask;
- }
- }
- else
- {
- // Create the mask and byte values
- const XMLByte mask1 = XMLByte(0x1 << (bitToSet % 8));
- const unsigned int byteOfs = bitToSet >> 3;
- // And access the right bit and byte
- fByteArray[byteOfs] &= ~mask1;
- fByteArray[byteOfs] |= mask1;
- }
- }
- void zeroBits()
- {
- if (fBitCount < 65)
- {
- fBits1 = 0;
- fBits2 = 0;
- }
- else
- {
- for (unsigned int index = 0; index < fByteCount; index++)
- fByteArray[index] = 0;
- }
- }
- int hashCode() const
- {
- if (fBitCount < 65)
- {
- return fBits1+ fBits2 * 31;
- }
- else
- {
- int hash = 0;
- for (int index = fByteCount - 1; index >= 0; index--)
- hash = fByteArray[index] + hash * 31;
- return hash;
- }
- }
- private :
- // -----------------------------------------------------------------------
- // Unimplemented constructors and operators
- // -----------------------------------------------------------------------
- CMStateSet();
- // -----------------------------------------------------------------------
- // Private data members
- //
- // fBitCount
- // The count of bits that the outside world wants to support,
- // so its the max bit index plus one.
- //
- // fByteCount
- // If the bit count is > 64, then we use the fByteArray member to
- // store the bits, and this indicates its size in bytes. Otherwise
- // its value is meaningless and unset.
- //
- // fBits1
- // fBits2
- // When the bit count is <= 64 (very common), these hold the bits.
- // Otherwise, the fByteArray member holds htem.
- //
- // fByteArray
- // The array of bytes used when the bit count is > 64. It is
- // allocated as required.
- // -----------------------------------------------------------------------
- unsigned int fBitCount;
- unsigned int fByteCount;
- unsigned int fBits1;
- unsigned int fBits2;
- XMLByte* fByteArray;
- MemoryManager* fMemoryManager;
- };
- XERCES_CPP_NAMESPACE_END
- #endif