[2674] | 1 | /* |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 3 | * contributor license agreements. See the NOTICE file distributed with |
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| 4 | * this work for additional information regarding copyright ownership. |
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 6 | * (the "License"); you may not use this file except in compliance with |
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| 7 | * the License. You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | * $Id: XMLAbstractDoubleFloat.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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| 20 | */ |
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| 21 | |
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| 22 | #ifndef XML_ABSTRACT_DOUBLE_FLOAT_HPP |
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| 23 | #define XML_ABSTRACT_DOUBLE_FLOAT_HPP |
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| 24 | |
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| 25 | #include <xercesc/util/XMLNumber.hpp> |
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| 26 | #include <xercesc/util/PlatformUtils.hpp> |
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| 27 | |
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| 28 | XERCES_CPP_NAMESPACE_BEGIN |
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| 29 | |
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| 30 | /*** |
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| 31 | * 3.2.5.1 Lexical representation |
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| 32 | * |
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| 33 | * double values have a lexical representation consisting of a mantissa followed, |
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| 34 | * optionally, by the character "E" or "e", followed by an exponent. |
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| 35 | * |
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| 36 | * The exponent ᅵmustᅵ be an integer. |
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| 37 | * The mantissa must be a decimal number. |
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| 38 | * The representations for exponent and mantissa must follow the lexical rules |
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| 39 | * for integer and decimal. |
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| 40 | * |
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| 41 | * If the "E" or "e" and the following exponent are omitted, |
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| 42 | * an exponent value of 0 is assumed. |
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| 43 | ***/ |
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| 44 | |
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| 45 | /*** |
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| 46 | * 3.2.4.1 Lexical representation |
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| 47 | * |
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| 48 | * float values have a lexical representation consisting of a mantissa followed, |
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| 49 | * optionally, by the character "E" or "e", followed by an exponent. |
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| 50 | * |
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| 51 | * The exponent ᅵmustᅵ be an integer. |
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| 52 | * The mantissa must be a decimal number. |
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| 53 | * The representations for exponent and mantissa must follow the lexical rules |
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| 54 | * for integer and decimal. |
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| 55 | * |
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| 56 | * If the "E" or "e" and the following exponent are omitted, |
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| 57 | * an exponent value of 0 is assumed. |
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| 58 | ***/ |
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| 59 | |
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| 60 | class XMLUTIL_EXPORT XMLAbstractDoubleFloat : public XMLNumber |
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| 61 | { |
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| 62 | public: |
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| 63 | |
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| 64 | enum LiteralType |
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| 65 | { |
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| 66 | NegINF, |
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| 67 | PosINF, |
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| 68 | NaN, |
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| 69 | SpecialTypeNum, |
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| 70 | Normal |
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| 71 | }; |
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| 72 | |
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| 73 | virtual ~XMLAbstractDoubleFloat(); |
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| 74 | |
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| 75 | static XMLCh* getCanonicalRepresentation |
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| 76 | ( |
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| 77 | const XMLCh* const rawData |
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| 78 | , MemoryManager* const memMgr = XMLPlatformUtils::fgMemoryManager |
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| 79 | ); |
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| 80 | |
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| 81 | /** |
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| 82 | * |
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| 83 | * Deprecated: please use getRawData |
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| 84 | * |
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| 85 | */ |
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| 86 | virtual XMLCh* toString() const; |
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| 87 | |
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| 88 | virtual XMLCh* getRawData() const; |
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| 89 | |
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| 90 | virtual const XMLCh* getFormattedString() const; |
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| 91 | |
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| 92 | virtual int getSign() const; |
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| 93 | |
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| 94 | MemoryManager* getMemoryManager() const; |
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| 95 | |
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| 96 | inline bool isDataConverted() const; |
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| 97 | |
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| 98 | inline bool isDataOverflowed() const; |
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| 99 | |
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| 100 | inline double getValue() const; |
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| 101 | |
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| 102 | inline LiteralType getType() const; |
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| 103 | |
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| 104 | /*** |
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| 105 | * |
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| 106 | * The decimal point delimiter for the schema double/float type is |
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| 107 | * defined to be a period and is not locale-specific. So, it must |
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| 108 | * be replaced with the local-specific delimiter before converting |
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| 109 | * from string to double/float. |
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| 110 | * |
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| 111 | ***/ |
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| 112 | static void normalizeDecimalPoint(char* const toNormal); |
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| 113 | |
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| 114 | /*** |
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| 115 | * Support for Serialization/De-serialization |
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| 116 | ***/ |
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| 117 | DECL_XSERIALIZABLE(XMLAbstractDoubleFloat) |
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| 118 | |
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| 119 | protected: |
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| 120 | |
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| 121 | // |
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| 122 | // To be used by derived class exclusively |
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| 123 | // |
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| 124 | XMLAbstractDoubleFloat(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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| 125 | |
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| 126 | void init(const XMLCh* const strValue); |
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| 127 | |
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| 128 | /** |
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| 129 | * Compares this object to the specified object. |
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| 130 | * The result is <code>true</code> if and only if the argument is not |
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| 131 | * <code>null</code> and is an <code>XMLAbstractDoubleFloat</code> object that contains |
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| 132 | * the same <code>int</code> value as this object. |
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| 133 | * |
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| 134 | * @param lValue the object to compare with. |
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| 135 | * @param rValue the object to compare against. |
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| 136 | * @param manager The MemoryManager to use to allocate objects |
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| 137 | * @return <code>true</code> if the objects are the same; |
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| 138 | * <code>false</code> otherwise. |
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| 139 | */ |
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| 140 | |
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| 141 | static int compareValues(const XMLAbstractDoubleFloat* const lValue |
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| 142 | , const XMLAbstractDoubleFloat* const rValue |
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| 143 | , MemoryManager* const manager); |
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| 144 | |
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| 145 | // |
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| 146 | // to be overridden by derived class |
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| 147 | // |
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| 148 | virtual void checkBoundary(char* const strValue) = 0; |
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| 149 | |
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| 150 | void |
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| 151 | convert(char* const strValue); |
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| 152 | |
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| 153 | private: |
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| 154 | // |
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| 155 | // Unimplemented |
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| 156 | // |
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| 157 | // copy ctor |
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| 158 | // assignment ctor |
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| 159 | // |
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| 160 | XMLAbstractDoubleFloat(const XMLAbstractDoubleFloat& toCopy); |
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| 161 | XMLAbstractDoubleFloat& operator=(const XMLAbstractDoubleFloat& toAssign); |
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| 162 | |
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| 163 | void normalizeZero(XMLCh* const); |
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| 164 | |
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| 165 | inline bool isSpecialValue() const; |
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| 166 | |
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| 167 | static int compareSpecial(const XMLAbstractDoubleFloat* const specialValue |
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| 168 | , MemoryManager* const manager); |
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| 169 | |
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| 170 | void formatString(); |
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| 171 | |
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| 172 | protected: |
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| 173 | double fValue; |
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| 174 | LiteralType fType; |
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| 175 | bool fDataConverted; |
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| 176 | bool fDataOverflowed; |
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| 177 | |
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| 178 | private: |
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| 179 | int fSign; |
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| 180 | XMLCh* fRawData; |
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| 181 | |
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| 182 | // |
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| 183 | // If the original string is not lexcially the same as the five |
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| 184 | // special value notations, and the value is converted to |
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| 185 | // special value due underlying platform restriction on data |
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| 186 | // representation, then this string is constructed and |
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| 187 | // takes the form "original_string (special_value_notation)", |
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| 188 | // otherwise it is empty. |
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| 189 | // |
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| 190 | XMLCh* fFormattedString; |
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| 191 | MemoryManager* fMemoryManager; |
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| 192 | |
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| 193 | }; |
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| 194 | |
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| 195 | inline bool XMLAbstractDoubleFloat::isSpecialValue() const |
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| 196 | { |
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| 197 | return (fType < SpecialTypeNum); |
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| 198 | } |
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| 199 | |
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| 200 | inline MemoryManager* XMLAbstractDoubleFloat::getMemoryManager() const |
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| 201 | { |
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| 202 | return fMemoryManager; |
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| 203 | } |
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| 204 | |
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| 205 | inline bool XMLAbstractDoubleFloat::isDataConverted() const |
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| 206 | { |
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| 207 | return fDataConverted; |
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| 208 | } |
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| 209 | |
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| 210 | inline bool XMLAbstractDoubleFloat::isDataOverflowed() const |
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| 211 | { |
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| 212 | return fDataOverflowed; |
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| 213 | } |
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| 214 | |
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| 215 | inline double XMLAbstractDoubleFloat::getValue() const |
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| 216 | { |
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| 217 | return fValue; |
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| 218 | } |
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| 219 | |
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| 220 | inline XMLAbstractDoubleFloat::LiteralType XMLAbstractDoubleFloat::getType() const |
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| 221 | { |
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| 222 | return fType; |
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| 223 | } |
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| 224 | |
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| 225 | XERCES_CPP_NAMESPACE_END |
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| 226 | |
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| 227 | #endif |
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