| /* |
| * 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/>. |
| */ |
| |
| /* |
| * $Id$ |
| * $Log$ |
| * Revision 1.4 2002/03/06 19:13:12 peiyongz |
| * Patch: more valid lexcial representation for positive/negative zero |
| * |
| * Revision 1.3 2002/03/01 18:47:37 peiyongz |
| * fix: more valid lexcial representation forms for "neural zero" |
| * |
| * Revision 1.2 2002/02/20 18:17:02 tng |
| * [Bug 5977] Warnings on generating apiDocs. |
| * |
| * Revision 1.1.1.1 2002/02/01 22:22:14 peiyongz |
| * sane_include |
| * |
| * Revision 1.4 2001/11/28 15:39:26 peiyongz |
| * return Type& for operator= |
| * |
| * Revision 1.3 2001/11/22 21:39:00 peiyongz |
| * Allow "0.0" to be a valid lexcial representation of ZERO. |
| * |
| * Revision 1.2 2001/11/22 20:23:00 peiyongz |
| * _declspec(dllimport) and inline warning C4273 |
| * |
| * Revision 1.1 2001/11/19 21:33:42 peiyongz |
| * Reorganization: Double/Float |
| * |
| * |
| */ |
| |
| #ifndef XML_ABSTRACT_DOUBLE_FLOAT_HPP |
| #define XML_ABSTRACT_DOUBLE_FLOAT_HPP |
| |
| #include <xercesc/util/XercesDefs.hpp> |
| #include <xercesc/util/XMLNumber.hpp> |
| #include <xercesc/util/XMLBigDecimal.hpp> |
| |
| /*** |
| * 3.2.5.1 Lexical representation |
| * |
| * double values have a lexical representation consisting of a mantissa followed, |
| * optionally, by the character "E" or "e", followed by an exponent. |
| * |
| * The exponent ·must· be an integer. |
| * The mantissa must be a decimal number. |
| * The representations for exponent and mantissa must follow the lexical rules |
| * for integer and decimal. |
| * |
| * If the "E" or "e" and the following exponent are omitted, |
| * an exponent value of 0 is assumed. |
| ***/ |
| |
| /*** |
| * 3.2.4.1 Lexical representation |
| * |
| * float values have a lexical representation consisting of a mantissa followed, |
| * optionally, by the character "E" or "e", followed by an exponent. |
| * |
| * The exponent ·must· be an integer. |
| * The mantissa must be a decimal number. |
| * The representations for exponent and mantissa must follow the lexical rules |
| * for integer and decimal. |
| * |
| * If the "E" or "e" and the following exponent are omitted, |
| * an exponent value of 0 is assumed. |
| ***/ |
| |
| class XMLUTIL_EXPORT XMLAbstractDoubleFloat : public XMLNumber |
| { |
| public: |
| |
| enum LiteralType |
| { |
| NegINF, |
| NegZero, |
| PosZero, |
| PosINF, |
| NaN, |
| SpecialTypeNum, |
| Normal |
| }; |
| |
| virtual ~XMLAbstractDoubleFloat(); |
| |
| virtual XMLCh* toString() const; |
| |
| virtual int getSign() const; |
| |
| protected: |
| |
| // |
| // To be used by derived class exclusively |
| // |
| XMLAbstractDoubleFloat(); |
| |
| void init(const XMLCh* const strValue); |
| |
| /** |
| * 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>XMLAbstractDoubleFloat</code> object that contains |
| * the same <code>int</code> value as this object. |
| * |
| * @param lValue the object to compare with. |
| * @param rValue the object to compare against. |
| * @return <code>true</code> if the objects are the same; |
| * <code>false</code> otherwise. |
| */ |
| |
| static int compareValues(const XMLAbstractDoubleFloat* const lValue |
| , const XMLAbstractDoubleFloat* const rValue); |
| |
| // |
| // to be overwritten by derived class |
| // |
| virtual void checkBoundary(const XMLCh* const strValue) = 0; |
| |
| private: |
| // |
| // Unimplemented |
| // |
| // copy ctor |
| // assignment ctor |
| // |
| XMLAbstractDoubleFloat(const XMLAbstractDoubleFloat& toCopy); |
| XMLAbstractDoubleFloat& operator=(const XMLAbstractDoubleFloat& toAssign); |
| |
| void normalizeZero(XMLCh* const); |
| |
| inline bool isSpecialValue() const; |
| |
| static int compareSpecial(const XMLAbstractDoubleFloat* const specialValue |
| , const XMLAbstractDoubleFloat* const normalValue); |
| |
| // ----------------------------------------------------------------------- |
| // Private data members |
| // |
| // fMantissa |
| // the XMLBigDecimal holding the value of mantissa. |
| // |
| // fExponent |
| // the XMLBigInteger holding the value of exponent. |
| // |
| // fType |
| // the type of the object. |
| // |
| // ----------------------------------------------------------------------- |
| |
| XMLBigDecimal* fMantissa; |
| XMLBigInteger* fExponent; |
| LiteralType fType; |
| }; |
| |
| inline bool XMLAbstractDoubleFloat::isSpecialValue() const |
| { |
| return (fType < SpecialTypeNum); |
| } |
| |
| #endif |
