XMLBigInteger.hpp
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: XMLBigInteger.hpp 932889 2010-04-11 13:10:10Z borisk $
*/
#if !defined(XERCESC_INCLUDE_GUARD_XML_BIGINTEGER_HPP)
#define XERCESC_INCLUDE_GUARD_XML_BIGINTEGER_HPP
#include <xercesc/util/XMemory.hpp>
#include <xercesc/util/XMLString.hpp>
XERCES_CPP_NAMESPACE_BEGIN
class XMLUTIL_EXPORT XMLBigInteger : public XMemory
{
public:
XMLBigInteger
(
const XMLCh* const strValue
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
);
~XMLBigInteger();
XMLBigInteger(const XMLBigInteger& toCopy);
static XMLCh* getCanonicalRepresentation
(
const XMLCh* const rawData
, MemoryManager* const memMgr = XMLPlatformUtils::fgMemoryManager
, bool isNonPositiveInteger = false
);
static void parseBigInteger(const XMLCh* const toConvert
, XMLCh* const retBuffer
, int& signValue
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
static int compareValues(const XMLBigInteger* const lValue
,const XMLBigInteger* const rValue
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
static int compareValues(const XMLCh* const lString
, const int& lSign
, const XMLCh* const rString
, const int& rSign
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
void multiply(const unsigned int byteToShift);
void divide(const unsigned int byteToShift);
unsigned int getTotalDigit() const;
inline XMLCh* getRawData() const;
bool operator==(const XMLBigInteger& toCompare) const;
int getSign() const;
int intValue() const;
private:
// -----------------------------------------------------------------------
// Unimplemented constructors and operators
// -----------------------------------------------------------------------
XMLBigInteger& operator=(const XMLBigInteger&);
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 unsigned int XMLBigInteger::getTotalDigit() const
{
return ((getSign() ==0) ? 0 : (unsigned int)XMLString::stringLen(fMagnitude));
}
inline bool XMLBigInteger::operator==(const XMLBigInteger& toCompare) const
{
return ( compareValues(this, &toCompare, fMemoryManager) ==0 ? true : false);
}
inline void XMLBigInteger::setSign(int newSign)
{
fSign = newSign;
}
inline XMLCh* XMLBigInteger::getRawData() const
{
return fRawData;
}
XERCES_CPP_NAMESPACE_END
#endif
XMemory
This class makes it possible to override the C++ memory management by adding new/delete operators to ...
Definition: XMemory.hpp:40
XMLBigInteger
Definition: XMLBigInteger.hpp:30
XMLPlatformUtils::fgMemoryManager
static MemoryManager * fgMemoryManager
The configurable memory manager.
Definition: PlatformUtils.hpp:121
XMLBigInteger::getSign
int getSign() const
Returns the signum function of this number (i.e., -1, 0 or 1 as the value of this number is negative...
Definition: XMLBigInteger.hpp:148
XMLBigInteger::getTotalDigit
unsigned int getTotalDigit() const
Definition: XMLBigInteger.hpp:153
MemoryManager
Configurable memory manager.
Definition: MemoryManager.hpp:39
XMLString::stringLen
static XMLSize_t stringLen(const char *const src)
Get the length of the string.
XMLCh
uint16_t XMLCh
Definition: Xerces_autoconf_config.hpp:120
XERCES_CPP_NAMESPACE_BEGIN
#define XERCES_CPP_NAMESPACE_BEGIN
Definition: XercesDefs.hpp:112
XMLString.hpp
XMLUTIL_EXPORT
#define XMLUTIL_EXPORT
Definition: XercesDefs.hpp:162
XERCES_CPP_NAMESPACE_END
#define XERCES_CPP_NAMESPACE_END
Definition: XercesDefs.hpp:113
XMLBigInteger::operator==
bool operator==(const XMLBigInteger &toCompare) const
Compares this object to the specified object.
Definition: XMLBigInteger.hpp:158
XMLBigInteger::getRawData
XMLCh * getRawData() const
Return a copy of the fMagnitude.
Definition: XMLBigInteger.hpp:168
XMemory.hpp