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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 // |
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43 // W A R N I N G |
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44 // ------------- |
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45 // |
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46 // This file is not part of the Qt API. It exists purely as an |
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47 // implementation detail. This header file may change from version to |
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48 // version without notice, or even be removed. |
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49 // |
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50 // We mean it. |
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51 |
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52 #ifndef Patternist_DerivedInteger_H |
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53 #define Patternist_DerivedInteger_H |
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54 |
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55 #include "qbuiltintypes_p.h" |
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56 #include "qinteger_p.h" |
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57 #include "qpatternistlocale_p.h" |
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58 #include "qvalidationerror_p.h" |
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59 |
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60 QT_BEGIN_HEADER |
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61 |
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62 QT_BEGIN_NAMESPACE |
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63 |
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64 namespace QPatternist |
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65 { |
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66 /** |
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67 * @relates DerivedInteger |
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68 */ |
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69 enum DerivedIntegerLimitsUsage |
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70 { |
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71 None = 1, |
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72 LimitUpwards = 2, |
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73 LimitDownwards = 4, |
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74 LimitBoth = LimitUpwards | LimitDownwards |
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75 }; |
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76 |
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77 enum |
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78 { |
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79 IgnorableSignedValue = 0, |
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80 IgnorableUnsignedValue = 0 |
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81 }; |
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82 |
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83 template<TypeOfDerivedInteger DerivedType> class DerivedInteger; |
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84 |
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85 template<TypeOfDerivedInteger DerivedType> class DerivedIntegerDetails; |
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86 |
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87 template<> |
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88 class DerivedIntegerDetails<TypeByte> |
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89 { |
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90 private: |
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91 friend class DerivedInteger<TypeByte>; |
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92 typedef qint8 StorageType; |
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93 typedef xsInteger TemporaryStorageType; |
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94 static const StorageType maxInclusive = 127; |
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95 static const StorageType minInclusive = -128; |
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96 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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97 |
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98 /** |
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99 * Disable the default constructor. |
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100 */ |
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101 DerivedIntegerDetails() {} |
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102 |
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103 Q_DISABLE_COPY(DerivedIntegerDetails) |
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104 }; |
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105 |
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106 template<> |
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107 class DerivedIntegerDetails<TypeInt> |
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108 { |
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109 private: |
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110 friend class DerivedInteger<TypeInt>; |
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111 typedef qint32 StorageType; |
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112 typedef xsInteger TemporaryStorageType; |
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113 static const StorageType maxInclusive = Q_INT64_C(2147483647); |
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114 static const StorageType minInclusive = Q_INT64_C(-2147483648); |
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115 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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116 |
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117 /** |
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118 * Disable the default constructor. |
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119 */ |
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120 DerivedIntegerDetails() {} |
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121 |
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122 Q_DISABLE_COPY(DerivedIntegerDetails) |
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123 }; |
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124 |
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125 template<> |
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126 class DerivedIntegerDetails<TypeLong> |
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127 { |
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128 private: |
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129 friend class DerivedInteger<TypeLong>; |
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130 typedef qint64 StorageType; |
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131 typedef StorageType TemporaryStorageType; |
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132 static const StorageType maxInclusive = Q_INT64_C(9223372036854775807); |
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133 |
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134 /** |
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135 * This messy arithmetic expression ensures that we don't get a warning |
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136 * on neither GCC nor MSVC. |
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137 */ |
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138 static const StorageType minInclusive = -(Q_INT64_C(9223372036854775807)) - 1; |
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139 |
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140 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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141 |
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142 /** |
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143 * Disable the default constructor. |
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144 */ |
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145 DerivedIntegerDetails() {} |
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146 |
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147 Q_DISABLE_COPY(DerivedIntegerDetails) |
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148 }; |
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149 |
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150 template<> |
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151 class DerivedIntegerDetails<TypeNegativeInteger> |
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152 { |
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153 private: |
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154 friend class DerivedInteger<TypeNegativeInteger>; |
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155 typedef xsInteger StorageType; |
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156 typedef StorageType TemporaryStorageType; |
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157 static const StorageType maxInclusive = -1; |
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158 static const StorageType minInclusive = IgnorableSignedValue; |
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159 static const DerivedIntegerLimitsUsage limitsUsage = LimitUpwards; |
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160 |
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161 /** |
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162 * Disable the default constructor. |
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163 */ |
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164 DerivedIntegerDetails() {} |
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165 |
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166 Q_DISABLE_COPY(DerivedIntegerDetails) |
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167 }; |
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168 |
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169 template<> |
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170 class DerivedIntegerDetails<TypeNonNegativeInteger> |
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171 { |
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172 private: |
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173 friend class DerivedInteger<TypeNonNegativeInteger>; |
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174 typedef xsInteger StorageType; |
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175 typedef StorageType TemporaryStorageType; |
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176 static const StorageType maxInclusive = IgnorableSignedValue; |
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177 static const StorageType minInclusive = 0; |
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178 static const DerivedIntegerLimitsUsage limitsUsage = LimitDownwards; |
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179 |
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180 /** |
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181 * Disable the default constructor. |
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182 */ |
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183 DerivedIntegerDetails() {} |
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184 |
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185 Q_DISABLE_COPY(DerivedIntegerDetails) |
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186 }; |
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187 |
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188 template<> |
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189 class DerivedIntegerDetails<TypeNonPositiveInteger> |
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190 { |
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191 private: |
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192 friend class DerivedInteger<TypeNonPositiveInteger>; |
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193 typedef xsInteger StorageType; |
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194 typedef StorageType TemporaryStorageType; |
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195 static const StorageType maxInclusive = 0; |
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196 static const StorageType minInclusive = IgnorableSignedValue; |
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197 static const DerivedIntegerLimitsUsage limitsUsage = LimitUpwards; |
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198 |
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199 /** |
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200 * Disable the default constructor. |
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201 */ |
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202 DerivedIntegerDetails() {} |
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203 |
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204 Q_DISABLE_COPY(DerivedIntegerDetails) |
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205 }; |
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206 |
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207 template<> |
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208 class DerivedIntegerDetails<TypePositiveInteger> |
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209 { |
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210 private: |
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211 friend class DerivedInteger<TypePositiveInteger>; |
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212 typedef xsInteger StorageType; |
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213 typedef StorageType TemporaryStorageType; |
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214 static const StorageType maxInclusive = IgnorableSignedValue; |
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215 static const StorageType minInclusive = 1; |
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216 static const DerivedIntegerLimitsUsage limitsUsage = LimitDownwards; |
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217 |
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218 /** |
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219 * Disable the default constructor. |
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220 */ |
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221 DerivedIntegerDetails() {} |
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222 |
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223 Q_DISABLE_COPY(DerivedIntegerDetails) |
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224 }; |
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225 |
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226 template<> |
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227 class DerivedIntegerDetails<TypeShort> |
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228 { |
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229 private: |
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230 friend class DerivedInteger<TypeShort>; |
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231 typedef qint16 StorageType; |
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232 typedef xsInteger TemporaryStorageType; |
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233 static const StorageType maxInclusive = 32767; |
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234 static const StorageType minInclusive = -32768; |
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235 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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236 |
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237 /** |
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238 * Disable the default constructor. |
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239 */ |
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240 DerivedIntegerDetails() {} |
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241 |
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242 Q_DISABLE_COPY(DerivedIntegerDetails) |
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243 }; |
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244 |
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245 template<> |
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246 class DerivedIntegerDetails<TypeUnsignedByte> |
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247 { |
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248 private: |
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249 friend class DerivedInteger<TypeUnsignedByte>; |
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250 typedef quint8 StorageType; |
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251 typedef qint64 TemporaryStorageType; |
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252 static const StorageType maxInclusive = 255; |
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253 static const StorageType minInclusive = 0; |
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254 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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255 |
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256 /** |
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257 * Disable the default constructor. |
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258 */ |
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259 DerivedIntegerDetails() {} |
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260 |
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261 Q_DISABLE_COPY(DerivedIntegerDetails) |
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262 }; |
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263 |
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264 template<> |
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265 class DerivedIntegerDetails<TypeUnsignedInt> |
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266 { |
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267 private: |
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268 friend class DerivedInteger<TypeUnsignedInt>; |
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269 typedef quint32 StorageType; |
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270 typedef qint64 TemporaryStorageType; |
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271 static const StorageType maxInclusive = Q_UINT64_C(4294967295); |
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272 static const StorageType minInclusive = 0; |
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273 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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274 |
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275 /** |
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276 * Disable the default constructor. |
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277 */ |
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278 DerivedIntegerDetails() {} |
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279 |
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280 Q_DISABLE_COPY(DerivedIntegerDetails) |
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281 }; |
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282 |
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283 template<> |
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284 class DerivedIntegerDetails<TypeUnsignedLong> |
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285 { |
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286 private: |
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287 friend class DerivedInteger<TypeUnsignedLong>; |
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288 typedef quint64 StorageType; |
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289 typedef StorageType TemporaryStorageType; |
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290 static const StorageType maxInclusive = Q_UINT64_C(18446744073709551615); |
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291 static const StorageType minInclusive = 0; |
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292 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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293 |
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294 /** |
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295 * Disable the default constructor. |
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296 */ |
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297 DerivedIntegerDetails() {} |
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298 |
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299 Q_DISABLE_COPY(DerivedIntegerDetails) |
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300 }; |
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301 |
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302 template<> |
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303 class DerivedIntegerDetails<TypeUnsignedShort> |
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304 { |
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305 private: |
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306 friend class DerivedInteger<TypeUnsignedShort>; |
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307 typedef quint16 StorageType; |
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308 typedef qint64 TemporaryStorageType; |
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309 static const StorageType maxInclusive = 65535; |
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310 static const StorageType minInclusive = 0; |
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311 static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; |
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312 |
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313 /** |
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314 * Disable the default constructor. |
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315 */ |
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316 DerivedIntegerDetails() {} |
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317 |
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318 Q_DISABLE_COPY(DerivedIntegerDetails) |
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319 }; |
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320 |
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321 /** |
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322 * @short Represents instances of derived @c xs:integer types, such as @c |
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323 * xs:byte. |
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324 * |
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325 * @author Frans Englich <frans.englich@nokia.com> |
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326 * @ingroup Patternist_xdm |
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327 */ |
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328 template<TypeOfDerivedInteger DerivedType> |
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329 class DerivedInteger : public Numeric |
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330 { |
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331 private: |
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332 typedef typename DerivedIntegerDetails<DerivedType>::StorageType StorageType; |
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333 typedef typename DerivedIntegerDetails<DerivedType>::TemporaryStorageType TemporaryStorageType; |
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334 |
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335 static const StorageType maxInclusive = DerivedIntegerDetails<DerivedType>::maxInclusive; |
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336 static const StorageType minInclusive = DerivedIntegerDetails<DerivedType>::minInclusive; |
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337 static const DerivedIntegerLimitsUsage limitsUsage = DerivedIntegerDetails<DerivedType>::limitsUsage; |
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338 |
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339 const StorageType m_value; |
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340 |
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341 inline DerivedInteger(const StorageType num) : m_value(num) |
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342 { |
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343 } |
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344 |
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345 /** |
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346 * By refactoring out the simple comparison below into a template |
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347 * function, we avoid the warning "warning: comparison of unsigned expression < 0 is always false" with gcc |
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348 * when the class is instantiated with TypeUnsignedLong. The warning is |
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349 * a false positive since we check wehther LimitUpwards is set before |
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350 * instantiating. |
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351 * |
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352 * This template function exists for no other reason. */ |
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353 template<typename A, typename B> |
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354 static bool lessThan(const A &a, const B &b) |
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355 { |
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356 return a < b; |
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357 } |
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358 |
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359 /** |
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360 * This function exists for the same reason that lessThan() do. |
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361 */ |
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362 template<typename A, typename B> |
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363 static bool largerOrEqual(const A &a, const B &b) |
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364 { |
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365 return qint64(a) >= b; |
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366 } |
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367 |
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368 public: |
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369 |
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370 static ItemType::Ptr itemType() |
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371 { |
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372 switch(DerivedType) |
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373 { |
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374 case TypeByte: return BuiltinTypes::xsByte; |
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375 case TypeInt: return BuiltinTypes::xsInt; |
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376 case TypeLong: return BuiltinTypes::xsLong; |
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377 case TypeNegativeInteger: return BuiltinTypes::xsNegativeInteger; |
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378 case TypeNonNegativeInteger: return BuiltinTypes::xsNonNegativeInteger; |
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379 case TypeNonPositiveInteger: return BuiltinTypes::xsNonPositiveInteger; |
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380 case TypePositiveInteger: return BuiltinTypes::xsPositiveInteger; |
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381 case TypeShort: return BuiltinTypes::xsShort; |
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382 case TypeUnsignedByte: return BuiltinTypes::xsUnsignedByte; |
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383 case TypeUnsignedInt: return BuiltinTypes::xsUnsignedInt; |
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384 case TypeUnsignedLong: return BuiltinTypes::xsUnsignedLong; |
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385 case TypeUnsignedShort: return BuiltinTypes::xsUnsignedShort; |
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386 } |
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387 |
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388 Q_ASSERT(false); |
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389 return ItemType::Ptr(); |
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390 } |
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391 |
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392 static AtomicValue::Ptr fromValue(const NamePool::Ptr &np, const TemporaryStorageType num) |
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393 { |
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394 /* If we use minInclusive when calling lessThan(), we for some |
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395 * reason get a linker error with GCC. Using this temporary |
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396 * variable solves it. */ |
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397 const StorageType minimum = minInclusive; |
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398 |
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399 if((limitsUsage & LimitUpwards) && |
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400 num > maxInclusive) |
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401 { |
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402 return ValidationError::createError(QtXmlPatterns::tr( |
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403 "Value %1 of type %2 exceeds maximum (%3).") |
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404 .arg(formatData(static_cast<xsInteger>(num))) |
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405 .arg(formatType(np, itemType())) |
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406 .arg(formatData(static_cast<xsInteger>(maxInclusive)))); |
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407 } |
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408 else if((limitsUsage & LimitDownwards) && |
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409 lessThan(num, minimum)) |
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410 { |
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411 return ValidationError::createError(QtXmlPatterns::tr( |
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412 "Value %1 of type %2 is below minimum (%3).") |
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413 .arg(formatData(static_cast<xsInteger>(num))) |
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414 .arg(formatType(np, itemType())) |
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415 .arg(formatData(static_cast<xsInteger>(minInclusive)))); |
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416 } |
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417 else |
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418 return AtomicValue::Ptr(new DerivedInteger(num)); |
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419 } |
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420 |
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421 static AtomicValue::Ptr fromValueUnchecked(const TemporaryStorageType num) |
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422 { |
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423 return AtomicValue::Ptr(new DerivedInteger(num)); |
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424 } |
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425 |
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426 /** |
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427 * Constructs an instance from the lexical |
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428 * representation @p strNumeric. |
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429 */ |
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430 static AtomicValue::Ptr fromLexical(const NamePool::Ptr &np, const QString &strNumeric) |
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431 { |
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432 bool conversionOk = false; |
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433 TemporaryStorageType num; |
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434 |
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435 /* Depending on the type, we need to call different conversion |
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436 * functions on QString. */ |
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437 switch(DerivedType) |
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438 { |
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439 case TypeUnsignedLong: |
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440 { |
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441 /* Qt decides to flag '-' as invalid, so remove it before. */ |
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442 if(strNumeric.contains(QLatin1Char('-'))) |
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443 { |
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444 num = QString(strNumeric).remove(QLatin1Char('-')).toULongLong(&conversionOk); |
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445 |
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446 if(num != 0) |
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447 conversionOk = false; |
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448 } |
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449 else |
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450 num = strNumeric.toULongLong(&conversionOk); |
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451 |
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452 break; |
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453 } |
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454 default: |
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455 { |
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456 num = strNumeric.toLongLong(&conversionOk); |
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457 break; |
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458 } |
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459 } |
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460 |
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461 if(conversionOk) |
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462 return fromValue(np, num); |
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463 else |
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464 return ValidationError::createError(); |
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465 } |
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466 |
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467 inline StorageType storedValue() const |
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468 { |
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469 return m_value; |
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470 } |
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471 |
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472 /** |
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473 * Determines the Effective %Boolean Value of this number. |
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474 * |
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475 * @returns @c false if the number is 0, otherwise @c true. |
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476 */ |
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477 bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const |
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478 { |
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479 return m_value != 0; |
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480 } |
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481 |
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482 virtual QString stringValue() const |
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483 { |
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484 return QString::number(m_value); |
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485 } |
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486 |
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487 virtual ItemType::Ptr type() const |
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488 { |
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489 return itemType(); |
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490 } |
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491 |
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492 virtual xsDouble toDouble() const |
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493 { |
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494 return static_cast<xsDouble>(m_value); |
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495 } |
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496 |
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497 virtual xsInteger toInteger() const |
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498 { |
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499 return m_value; |
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500 } |
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501 |
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502 virtual xsFloat toFloat() const |
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503 { |
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504 return static_cast<xsFloat>(m_value); |
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505 } |
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506 |
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507 virtual xsDecimal toDecimal() const |
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508 { |
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509 return static_cast<xsDecimal>(m_value); |
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510 } |
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511 |
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512 virtual Numeric::Ptr round() const |
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513 { |
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514 /* xs:integerS never have a mantissa. */ |
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515 return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue()))); |
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516 } |
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517 |
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518 virtual Numeric::Ptr roundHalfToEven(const xsInteger) const |
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519 { |
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520 return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue()))); |
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521 } |
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522 |
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523 virtual Numeric::Ptr floor() const |
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524 { |
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525 return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue()))); |
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526 } |
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527 |
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528 virtual Numeric::Ptr ceiling() const |
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529 { |
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530 return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue()))); |
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531 } |
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532 |
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533 virtual Numeric::Ptr abs() const |
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534 { |
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535 /* We unconditionally create an Integer even if we're a positive |
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536 * value, because one part of this is the type change to |
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537 * xs:integer. |
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538 * |
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539 * We've manually inlined qAbs() and invoke xsInteger's |
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540 * constructor. The reason being that we other gets truncation down |
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541 * to StorageType. See for instance XQTS test case absint1args-1. */ |
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542 return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(largerOrEqual(m_value, 0) ? xsInteger(m_value) : -xsInteger(m_value)).asAtomicValue()))); |
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543 } |
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544 |
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545 /** |
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546 * @returns always @c false, @c xs:DerivedInteger doesn't have |
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547 * not-a-number in its value space. |
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548 */ |
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549 virtual bool isNaN() const |
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550 { |
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551 return false; |
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552 } |
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553 |
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554 /** |
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555 * @returns always @c false, @c xs:DerivedInteger doesn't have |
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556 * infinity in its value space. |
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557 */ |
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558 virtual bool isInf() const |
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559 { |
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560 return false; |
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561 } |
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562 |
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563 virtual Item toNegated() const |
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564 { |
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565 return Integer::fromValue(-xsInteger(m_value)); |
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566 } |
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567 |
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568 virtual bool isSigned() const |
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569 { |
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570 switch(DerivedType) |
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571 { |
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572 /* Fallthrough all these. */ |
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573 case TypeByte: |
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574 case TypeInt: |
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575 case TypeLong: |
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576 case TypeNegativeInteger: |
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577 case TypeNonNegativeInteger: |
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578 case TypeNonPositiveInteger: |
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579 case TypePositiveInteger: |
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580 case TypeShort: |
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581 return true; |
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582 /* Fallthrough all these. */ |
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583 case TypeUnsignedByte: |
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584 case TypeUnsignedInt: |
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585 case TypeUnsignedLong: |
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586 case TypeUnsignedShort: |
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587 return false; |
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588 } |
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589 return false; |
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590 } |
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591 |
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592 virtual qulonglong toUnsignedInteger() const |
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593 { |
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594 switch(DerivedType) |
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595 { |
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596 /* Fallthrough all these. */ |
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597 case TypeByte: |
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598 case TypeInt: |
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599 case TypeLong: |
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600 case TypeNegativeInteger: |
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601 case TypeNonNegativeInteger: |
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602 case TypeNonPositiveInteger: |
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603 case TypePositiveInteger: |
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604 case TypeShort: |
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605 Q_ASSERT_X(false, Q_FUNC_INFO, |
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606 "It makes no sense to call this function, see Numeric::toUnsignedInteger()."); |
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607 /* Fallthrough all these. */ |
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608 case TypeUnsignedByte: |
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609 case TypeUnsignedInt: |
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610 case TypeUnsignedLong: |
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611 case TypeUnsignedShort: |
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612 return m_value; |
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613 } |
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614 return 0; |
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615 } |
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616 |
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617 }; |
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618 } |
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619 |
|
620 QT_END_NAMESPACE |
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621 |
|
622 QT_END_HEADER |
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623 |
|
624 #endif |