API Docs for SAX and DOM                 XMLAbstractDoubleFloat.hpp Go to the documentation of this file. /* * 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. 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For more information * on the Apache Software Foundation, please see * <http://www.apache.org/>. */ /* * $Id: XMLAbstractDoubleFloat.hpp,v 1.8 2003/02/02 23:54:43 peiyongz Exp $ * $Log: XMLAbstractDoubleFloat.hpp,v $ * Revision 1.8 2003/02/02 23:54:43 peiyongz * getFormattedString() added to return original and converted value. * * Revision 1.7 2003/01/30 21:55:22 tng * Performance: create getRawData which is similar to toString but return the internal data directly, user is not required to delete the returned memory. * * Revision 1.6 2002/12/11 00:20:02 peiyongz * Doing businesss in value space. Converting out-of-bound value into special values. * * Revision 1.5 2002/11/04 15:22:05 tng * C++ Namespace Support. * * 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/XMLNumber.hpp> XERCES_CPP_NAMESPACE_BEGIN /*** * 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 XMLAbstractDoubleFloat : public XMLNumber { public: enum LiteralType { NegINF, NegZero, PosZero, PosINF, NaN, SpecialTypeNum, Normal }; virtual ~XMLAbstractDoubleFloat(); virtual XMLCh* toString() const; virtual XMLCh* getRawData() const; virtual const XMLCh* getFormattedString() const; virtual int getSign() const; protected: // // To be used by derived class exclusively // XMLAbstractDoubleFloat(); void init(const XMLCh* const strValue); 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); void formatString(); protected: double fValue; LiteralType fType; bool fDataConverted; private: int fSign; XMLCh* fRawData; // // If the original string is not lexcially the same as the five // special value notations, and the value is converted to // special value due underlying platform restriction on data // representation, then this string is constructed and // takes the form "original_string (special_value_notation)", // otherwise it is empty. // XMLCh* fFormattedString; }; inline bool XMLAbstractDoubleFloat::isSpecialValue() const { return (fType < SpecialTypeNum); } XERCES_CPP_NAMESPACE_END #endif

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