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 605828 2007-12-20 08:05:47Z amassari $ |
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20 | */ |
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21 | |
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22 | #if !defined(XERCESC_INCLUDE_GUARD_XML_ABSTRACT_DOUBLE_FLOAT_HPP) |
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23 | #define XERCESC_INCLUDE_GUARD_XML_ABSTRACT_DOUBLE_FLOAT_HPP |
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24 | |
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25 | |
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26 | #include <xercesc/util/XMLNumber.hpp> |
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27 | #include <icxercesc/util/PlatformUtils.hpp> |
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28 | |
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29 | XERCES_CPP_NAMESPACE_BEGIN |
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30 | |
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31 | /*** |
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32 | * 3.2.5.1 Lexical representation |
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33 | * |
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34 | * double values have a lexical representation consisting of a mantissa followed, |
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35 | * optionally, by the character "E" or "e", followed by an exponent. |
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36 | * |
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37 | * The exponent must be an integer. |
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38 | * The mantissa must be a decimal number. |
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39 | * The representations for exponent and mantissa must follow the lexical rules |
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40 | * for integer and decimal. |
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41 | * |
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42 | * If the "E" or "e" and the following exponent are omitted, |
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43 | * an exponent value of 0 is assumed. |
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44 | ***/ |
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45 | |
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46 | /*** |
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47 | * 3.2.4.1 Lexical representation |
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48 | * |
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49 | * float values have a lexical representation consisting of a mantissa followed, |
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50 | * optionally, by the character "E" or "e", followed by an exponent. |
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51 | * |
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52 | * The exponent must be an integer. |
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53 | * The mantissa must be a decimal number. |
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54 | * The representations for exponent and mantissa must follow the lexical rules |
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55 | * for integer and decimal. |
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56 | * |
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57 | * If the "E" or "e" and the following exponent are omitted, |
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58 | * an exponent value of 0 is assumed. |
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59 | ***/ |
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60 | |
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61 | class XMLUTIL_EXPORT XMLAbstractDoubleFloat : public XMLNumber |
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62 | { |
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63 | public: |
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64 | |
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65 | enum LiteralType |
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66 | { |
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67 | NegINF, |
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68 | PosINF, |
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69 | NaN, |
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70 | SpecialTypeNum, |
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71 | Normal |
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72 | }; |
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73 | |
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74 | virtual ~XMLAbstractDoubleFloat(); |
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75 | |
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76 | static XMLCh* getCanonicalRepresentation |
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77 | ( |
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78 | const XMLCh* const rawData |
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79 | , MemoryManager* const memMgr = XMLPlatformUtils::fgMemoryManager |
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80 | ); |
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81 | |
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82 | virtual XMLCh* getRawData() const; |
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83 | |
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84 | virtual const XMLCh* getFormattedString() const; |
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85 | |
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86 | virtual int getSign() const; |
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87 | |
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88 | MemoryManager* getMemoryManager() const; |
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89 | |
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90 | inline bool isDataConverted() const; |
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91 | |
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92 | inline bool isDataOverflowed() const; |
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93 | |
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94 | inline double getValue() const; |
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95 | |
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96 | inline LiteralType getType() const; |
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97 | |
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98 | /*** |
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99 | * |
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100 | * The decimal point delimiter for the schema double/float type is |
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101 | * defined to be a period and is not locale-specific. So, it must |
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102 | * be replaced with the local-specific delimiter before converting |
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103 | * from string to double/float. |
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104 | * |
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105 | ***/ |
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106 | static void normalizeDecimalPoint(char* const toNormal); |
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107 | |
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108 | /*** |
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109 | * Support for Serialization/De-serialization |
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110 | ***/ |
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111 | DECL_XSERIALIZABLE(XMLAbstractDoubleFloat) |
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112 | |
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113 | protected: |
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114 | |
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115 | // |
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116 | // To be used by derived class exclusively |
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117 | // |
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118 | XMLAbstractDoubleFloat(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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119 | |
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120 | void init(const XMLCh* const strValue); |
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121 | |
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122 | /** |
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123 | * Compares this object to the specified object. |
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124 | * The result is <code>true</code> if and only if the argument is not |
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125 | * <code>null</code> and is an <code>XMLAbstractDoubleFloat</code> object that contains |
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126 | * the same <code>int</code> value as this object. |
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127 | * |
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128 | * @param lValue the object to compare with. |
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129 | * @param rValue the object to compare against. |
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130 | * @param manager The MemoryManager to use to allocate objects |
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131 | * @return <code>true</code> if the objects are the same; |
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132 | * <code>false</code> otherwise. |
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133 | */ |
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134 | |
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135 | static int compareValues(const XMLAbstractDoubleFloat* const lValue |
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136 | , const XMLAbstractDoubleFloat* const rValue |
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137 | , MemoryManager* const manager); |
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138 | |
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139 | // |
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140 | // to be overridden by derived class |
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141 | // |
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142 | virtual void checkBoundary(char* const strValue) = 0; |
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143 | |
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144 | void |
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145 | convert(char* const strValue); |
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146 | |
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147 | private: |
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148 | // |
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149 | // Unimplemented |
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150 | // |
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151 | // copy ctor |
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152 | // assignment ctor |
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153 | // |
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154 | XMLAbstractDoubleFloat(const XMLAbstractDoubleFloat& toCopy); |
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155 | XMLAbstractDoubleFloat& operator=(const XMLAbstractDoubleFloat& toAssign); |
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156 | |
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157 | void normalizeZero(XMLCh* const); |
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158 | |
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159 | inline bool isSpecialValue() const; |
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160 | |
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161 | static int compareSpecial(const XMLAbstractDoubleFloat* const specialValue |
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162 | , MemoryManager* const manager); |
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163 | |
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164 | void formatString(); |
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165 | |
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166 | protected: |
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167 | double fValue; |
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168 | LiteralType fType; |
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169 | bool fDataConverted; |
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170 | bool fDataOverflowed; |
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171 | |
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172 | private: |
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173 | int fSign; |
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174 | XMLCh* fRawData; |
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175 | |
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176 | // |
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177 | // If the original string is not lexcially the same as the five |
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178 | // special value notations, and the value is converted to |
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179 | // special value due underlying platform restriction on data |
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180 | // representation, then this string is constructed and |
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181 | // takes the form "original_string (special_value_notation)", |
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182 | // otherwise it is empty. |
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183 | // |
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184 | XMLCh* fFormattedString; |
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185 | MemoryManager* fMemoryManager; |
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186 | |
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187 | }; |
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188 | |
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189 | inline bool XMLAbstractDoubleFloat::isSpecialValue() const |
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190 | { |
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191 | return (fType < SpecialTypeNum); |
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192 | } |
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193 | |
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194 | inline MemoryManager* XMLAbstractDoubleFloat::getMemoryManager() const |
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195 | { |
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196 | return fMemoryManager; |
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197 | } |
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198 | |
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199 | inline bool XMLAbstractDoubleFloat::isDataConverted() const |
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200 | { |
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201 | return fDataConverted; |
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202 | } |
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203 | |
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204 | inline bool XMLAbstractDoubleFloat::isDataOverflowed() const |
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205 | { |
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206 | return fDataOverflowed; |
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207 | } |
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208 | |
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209 | inline double XMLAbstractDoubleFloat::getValue() const |
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210 | { |
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211 | return fValue; |
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212 | } |
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213 | |
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214 | inline XMLAbstractDoubleFloat::LiteralType XMLAbstractDoubleFloat::getType() const |
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215 | { |
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216 | return fType; |
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217 | } |
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218 | |
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219 | XERCES_CPP_NAMESPACE_END |
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220 | |
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221 | #endif |
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