1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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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 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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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 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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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 <[email protected]>
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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(QPatternist::formatData(static_cast<xsInteger>(num)))
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405 | .arg(formatType(np, itemType()))
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406 | .arg(QPatternist::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(QPatternist::formatData(static_cast<xsInteger>(num)))
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414 | .arg(formatType(np, itemType()))
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415 | .arg(QPatternist::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 | }
|
---|
501 |
|
---|
502 | virtual xsFloat toFloat() const
|
---|
503 | {
|
---|
504 | return static_cast<xsFloat>(m_value);
|
---|
505 | }
|
---|
506 |
|
---|
507 | virtual xsDecimal toDecimal() const
|
---|
508 | {
|
---|
509 | return static_cast<xsDecimal>(m_value);
|
---|
510 | }
|
---|
511 |
|
---|
512 | virtual Numeric::Ptr round() const
|
---|
513 | {
|
---|
514 | /* xs:integerS never have a mantissa. */
|
---|
515 | return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue())));
|
---|
516 | }
|
---|
517 |
|
---|
518 | virtual Numeric::Ptr roundHalfToEven(const xsInteger) const
|
---|
519 | {
|
---|
520 | return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue())));
|
---|
521 | }
|
---|
522 |
|
---|
523 | virtual Numeric::Ptr floor() const
|
---|
524 | {
|
---|
525 | return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue())));
|
---|
526 | }
|
---|
527 |
|
---|
528 | virtual Numeric::Ptr ceiling() const
|
---|
529 | {
|
---|
530 | return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(m_value).asAtomicValue())));
|
---|
531 | }
|
---|
532 |
|
---|
533 | virtual Numeric::Ptr abs() const
|
---|
534 | {
|
---|
535 | /* We unconditionally create an Integer even if we're a positive
|
---|
536 | * value, because one part of this is the type change to
|
---|
537 | * xs:integer.
|
---|
538 | *
|
---|
539 | * We've manually inlined qAbs() and invoke xsInteger's
|
---|
540 | * constructor. The reason being that we other gets truncation down
|
---|
541 | * to StorageType. See for instance XQTS test case absint1args-1. */
|
---|
542 | return Numeric::Ptr(static_cast<Numeric *>(const_cast<AtomicValue *>(Integer::fromValue(largerOrEqual(m_value, 0) ? xsInteger(m_value) : -xsInteger(m_value)).asAtomicValue())));
|
---|
543 | }
|
---|
544 |
|
---|
545 | /**
|
---|
546 | * @returns always @c false, @c xs:DerivedInteger doesn't have
|
---|
547 | * not-a-number in its value space.
|
---|
548 | */
|
---|
549 | virtual bool isNaN() const
|
---|
550 | {
|
---|
551 | return false;
|
---|
552 | }
|
---|
553 |
|
---|
554 | /**
|
---|
555 | * @returns always @c false, @c xs:DerivedInteger doesn't have
|
---|
556 | * infinity in its value space.
|
---|
557 | */
|
---|
558 | virtual bool isInf() const
|
---|
559 | {
|
---|
560 | return false;
|
---|
561 | }
|
---|
562 |
|
---|
563 | virtual Item toNegated() const
|
---|
564 | {
|
---|
565 | return Integer::fromValue(-xsInteger(m_value));
|
---|
566 | }
|
---|
567 |
|
---|
568 | virtual bool isSigned() const
|
---|
569 | {
|
---|
570 | switch(DerivedType)
|
---|
571 | {
|
---|
572 | /* Fallthrough all these. */
|
---|
573 | case TypeByte:
|
---|
574 | case TypeInt:
|
---|
575 | case TypeLong:
|
---|
576 | case TypeNegativeInteger:
|
---|
577 | case TypeNonNegativeInteger:
|
---|
578 | case TypeNonPositiveInteger:
|
---|
579 | case TypePositiveInteger:
|
---|
580 | case TypeShort:
|
---|
581 | return true;
|
---|
582 | /* Fallthrough all these. */
|
---|
583 | case TypeUnsignedByte:
|
---|
584 | case TypeUnsignedInt:
|
---|
585 | case TypeUnsignedLong:
|
---|
586 | case TypeUnsignedShort:
|
---|
587 | return false;
|
---|
588 | }
|
---|
589 | return false;
|
---|
590 | }
|
---|
591 |
|
---|
592 | virtual qulonglong toUnsignedInteger() const
|
---|
593 | {
|
---|
594 | switch(DerivedType)
|
---|
595 | {
|
---|
596 | /* Fallthrough all these. */
|
---|
597 | case TypeByte:
|
---|
598 | case TypeInt:
|
---|
599 | case TypeLong:
|
---|
600 | case TypeNegativeInteger:
|
---|
601 | case TypeNonNegativeInteger:
|
---|
602 | case TypeNonPositiveInteger:
|
---|
603 | case TypePositiveInteger:
|
---|
604 | case TypeShort:
|
---|
605 | Q_ASSERT_X(false, Q_FUNC_INFO,
|
---|
606 | "It makes no sense to call this function, see Numeric::toUnsignedInteger().");
|
---|
607 | /* Fallthrough all these. */
|
---|
608 | case TypeUnsignedByte:
|
---|
609 | case TypeUnsignedInt:
|
---|
610 | case TypeUnsignedLong:
|
---|
611 | case TypeUnsignedShort:
|
---|
612 | return m_value;
|
---|
613 | }
|
---|
614 | return 0;
|
---|
615 | }
|
---|
616 |
|
---|
617 | };
|
---|
618 | }
|
---|
619 |
|
---|
620 | QT_END_NAMESPACE
|
---|
621 |
|
---|
622 | QT_END_HEADER
|
---|
623 |
|
---|
624 | #endif
|
---|