XMLBigInteger.hpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 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) 2001 International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: XMLBigInteger.hpp,v 1.8 2003/05/16 06:01:53 knoaman Exp $
- */
- #ifndef XML_BIGINTEGER_HPP
- #define XML_BIGINTEGER_HPP
- #include <xercesc/util/XMemory.hpp>
- #include <xercesc/util/XMLString.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- class XMLUTIL_EXPORT XMLBigInteger : public XMemory
- {
- public:
- /**
- * Constructs a newly allocated <code>XMLBigInteger</code> object that
- * represents the value represented by the string. The string is
- * converted to an int value as if by the <code>valueOf</code> method.
- *
- * @param strValue the <code>String</code> to be converted to an
- * <code>XMLBigInteger</code>.
- * @exception NumberFormatException if the <code>String</code> does not
- * contain a parsable XMLBigInteger.
- */
- XMLBigInteger
- (
- const XMLCh* const strValue
- , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
- );
- ~XMLBigInteger();
- XMLBigInteger(const XMLBigInteger& toCopy);
- static void parseBigInteger(const XMLCh* const toConvert
- , XMLCh* const retBuffer
- , int& signValue);
- static int compareValues(const XMLBigInteger* const lValue
- ,const XMLBigInteger* const rValue);
- void multiply(const unsigned int byteToShift);
- void divide(const unsigned int byteToShift);
- int getTotalDigit() const;
- /**
- *
- * Deprecated: please use getRawData
- *
- * Return a copy of the fMagnitue.
- * A leading sign is ALWAYS in place and the caller of this method
- * is responsible for the de-allocation of the memory.
- */
- inline XMLCh* toString() const;
-
- /**
- * Return a copy of the fMagnitue.
- * This is similar to toString, except the internal buffer is returned directly
- * Caller is not required to delet the returned memory.
- */
- inline XMLCh* getRawData() const;
- /**
- * Compares this object to the specified object.
- * The result is <code>true</code> if and only if the argument is not
- * <code>null</code> and is an <code>XMLBigInteger</code> object that contains
- * the same <code>int</code> value as this object.
- *
- * @param toCompare the object to compare with.
- * @return <code>true</code> if the objects are the same;
- * <code>false</code> otherwise.
- */
- bool operator==(const XMLBigInteger& toCompare) const;
- /**
- * Returns the signum function of this number (i.e., -1, 0 or 1 as
- * the value of this number is negative, zero or positive).
- */
- int getSign() const;
- int intValue() const;
- private:
- void setSign(int);
- /*
- * The number is internally stored in "minimal" sign-fMagnitude format
- * (i.e., no BigIntegers have a leading zero byte in their magnitudes).
- * Zero is represented with a signum of 0 (and a zero-length fMagnitude).
- * Thus, there is exactly one representation for each value.
- */
- // -----------------------------------------------------------------------
- // Private data members
- //
- // fSign
- // to represent the sign of the number.
- //
- // fMagnitude
- // the buffer holding the number.
- //
- // fRawData
- // to preserve the original string used to construct this object,
- // needed for pattern matching.
- //
- // -----------------------------------------------------------------------
- int fSign;
- XMLCh* fMagnitude; //null terminated
- XMLCh* fRawData;
- MemoryManager* fMemoryManager;
- };
- inline int XMLBigInteger::getSign() const
- {
- return fSign;
- }
- inline int XMLBigInteger::getTotalDigit() const
- {
- return ((getSign() ==0) ? 0 : XMLString::stringLen(fMagnitude));
- }
- inline bool XMLBigInteger::operator==(const XMLBigInteger& toCompare) const
- {
- return ( compareValues(this, &toCompare) ==0 ? true : false);
- }
- inline void XMLBigInteger::setSign(int newSign)
- {
- fSign = newSign;
- }
- inline XMLCh* XMLBigInteger::getRawData() const
- {
- return fRawData;
- }
- //
- // The caller needs to de-allocate the memory allocated by this function
- //
- inline XMLCh* XMLBigInteger::toString() const
- {
- // Return data using global operator new
- return XMLString::replicate(fRawData);
- }
- XERCES_CPP_NAMESPACE_END
- #endif