source: NonGTP/Xerces/xercesc/util/XMLBigInteger.hpp @ 188

Revision 188, 8.0 KB checked in by mattausch, 19 years ago (diff)

added xercesc to support

Line 
1/*
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2001 The Apache Software Foundation.  All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in
16 *    the documentation and/or other materials provided with the
17 *    distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 *    if any, must include the following acknowledgment:
21 *       "This product includes software developed by the
22 *        Apache Software Foundation (http://www.apache.org/)."
23 *    Alternately, this acknowledgment may appear in the software itself,
24 *    if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Xerces" and "Apache Software Foundation" must
27 *    not be used to endorse or promote products derived from this
28 *    software without prior written permission. For written
29 *    permission, please contact apache\@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 *    nor may "Apache" appear in their name, without prior written
33 *    permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation, and was
51 * originally based on software copyright (c) 2001 International
52 * Business Machines, Inc., http://www.ibm.com .  For more information
53 * on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57/*
58 * $Id: XMLBigInteger.hpp,v 1.12 2004/01/29 11:48:46 cargilld Exp $
59 */
60
61#ifndef XML_BIGINTEGER_HPP
62#define XML_BIGINTEGER_HPP
63
64#include <xercesc/util/XMemory.hpp>
65#include <xercesc/util/XMLString.hpp>
66
67XERCES_CPP_NAMESPACE_BEGIN
68
69class XMLUTIL_EXPORT XMLBigInteger : public XMemory
70{
71public:
72
73    /**
74     * Constructs a newly allocated <code>XMLBigInteger</code> object that
75     * represents the value represented by the string. The string is
76     * converted to an int value as if by the <code>valueOf</code> method.
77     *
78     * @param      strValue   the <code>String</code> to be converted to an
79     *                       <code>XMLBigInteger</code>.
80     * @param manager    Pointer to the memory manager to be used to
81     *                   allocate objects.
82     * @exception  NumberFormatException  if the <code>String</code> does not
83     *               contain a parsable XMLBigInteger.
84     */
85
86    XMLBigInteger
87    (
88        const XMLCh* const strValue
89        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
90    );
91    ~XMLBigInteger();
92
93    XMLBigInteger(const XMLBigInteger& toCopy);
94
95    static XMLCh* getCanonicalRepresentation
96                        (
97                          const XMLCh*         const rawData
98                        ,       MemoryManager* const memMgr = XMLPlatformUtils::fgMemoryManager
99                        );
100
101    static void parseBigInteger(const XMLCh* const toConvert
102                              , XMLCh* const       retBuffer
103                              , int&   signValue
104                              , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
105
106    static int  compareValues(const XMLBigInteger* const lValue
107                             ,const XMLBigInteger* const rValue
108                             , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
109
110
111    void        multiply(const unsigned int byteToShift);
112
113    void        divide(const unsigned int byteToShift);
114
115    int         getTotalDigit() const;
116
117    /**
118     *
119     *  Deprecated: please use getRawData
120     *
121     *  Return a copy of the fMagnitue.
122     *  A leading sign is ALWAYS in place and the caller of this method
123     *  is responsible for the de-allocation of the memory.
124     */
125    inline XMLCh*      toString() const;
126   
127    /**
128     *  Return a copy of the fMagnitue.
129     *  This is similar to toString, except the internal buffer is returned directly
130     *  Caller is not required to delet the returned memory.
131     */
132    inline XMLCh*      getRawData() const;
133
134    /**
135     * Compares this object to the specified object.
136     * The result is <code>true</code> if and only if the argument is not
137     * <code>null</code> and is an <code>XMLBigInteger</code> object that contains
138     * the same <code>int</code> value as this object.
139     *
140     * @param   toCompare   the object to compare with.
141     * @return  <code>true</code> if the objects are the same;
142     *          <code>false</code> otherwise.
143     */
144    bool operator==(const XMLBigInteger& toCompare) const;
145
146    /**
147     * Returns the signum function of this number (i.e., -1, 0 or 1 as
148     * the value of this number is negative, zero or positive).
149     */
150    int getSign() const;
151
152    int intValue() const;
153
154private:
155    // -----------------------------------------------------------------------
156    //  Unimplemented constructors and operators
157    // -----------------------------------------------------------------------   
158    XMLBigInteger& operator=(const XMLBigInteger&);
159
160
161    void setSign(int);
162
163    /*
164     * The number is internally stored in "minimal" sign-fMagnitude format
165     * (i.e., no BigIntegers have a leading zero byte in their magnitudes).
166     * Zero is represented with a signum of 0 (and a zero-length fMagnitude).
167     * Thus, there is exactly one representation for each value.
168     */
169    // -----------------------------------------------------------------------
170    //  Private data members
171    //
172    //  fSign
173    //     to represent the sign of the number.
174    //
175    //  fMagnitude
176    //     the buffer holding the number.
177    //
178    //  fRawData
179    //     to preserve the original string used to construct this object,
180    //     needed for pattern matching.
181    //
182    // -----------------------------------------------------------------------
183
184    int         fSign;
185    XMLCh*      fMagnitude;  //null terminated
186    XMLCh*      fRawData;
187    MemoryManager* fMemoryManager;
188};
189
190inline int XMLBigInteger::getSign() const
191{   
192    return fSign;
193}
194
195inline int XMLBigInteger::getTotalDigit() const
196{
197    return ((getSign() ==0) ? 0 : XMLString::stringLen(fMagnitude));
198}
199
200inline bool XMLBigInteger::operator==(const XMLBigInteger& toCompare) const
201{
202    return ( compareValues(this, &toCompare, fMemoryManager) ==0 ? true : false);
203}
204
205inline void XMLBigInteger::setSign(int newSign)
206{
207    fSign = newSign;
208}
209
210inline XMLCh*  XMLBigInteger::getRawData() const
211{
212    return fRawData;
213}
214
215//
216// The caller needs to de-allocate the memory allocated by this function
217//
218inline XMLCh*  XMLBigInteger::toString() const
219{
220    // Return data using global operator new
221    return XMLString::replicate(fRawData, fMemoryManager);
222}
223
224XERCES_CPP_NAMESPACE_END
225
226#endif
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