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These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 // 43 // W A R N I N G 44 // ------------- 45 // 46 // This file is not part of the Qt API. It exists purely as an 47 // implementation detail. This header file may change from version to 48 // version without notice, or even be removed. 49 // 50 // We mean it. 51 52 #ifndef Patternist_CommonValues_H 53 #define Patternist_CommonValues_H 54 55 #include "qdaytimeduration_p.h" 56 #include "qyearmonthduration_p.h" 57 #include "qemptyiterator_p.h" 58 59 QT_BEGIN_HEADER 60 61 QT_BEGIN_NAMESPACE 62 63 namespace QPatternist 64 { 65 66 /** 67 * @short A collection of common values. 68 * 69 * @author Frans Englich <frans.englich@nokia.com> 70 * @ingroup Patternist_xdm 71 * @todo Documentation is missing/incomplete 72 */ 73 class CommonValues 74 { 75 public: 76 /** 77 * An empty, zero-length string. 78 * 79 * @note It is not @c null, but empty. 80 */ 81 static const AtomicValue::Ptr EmptyString; 82 83 /** 84 * The string "true", the lexical representation of 85 * @c xs:boolean's value @c true. 86 */ 87 static const AtomicValue::Ptr TrueString; 88 89 /** 90 * The string "false", the lexical representation of 91 * @c xs:boolean's value @c false. 92 */ 93 static const AtomicValue::Ptr UntypedAtomicFalse; 94 95 /** 96 * The string "true", the lexical representation of 97 * @c xs:boolean's value @c true. 98 */ 99 static const AtomicValue::Ptr UntypedAtomicTrue; 100 101 /** 102 * The string "false", the lexical representation of 103 * @c xs:boolean's value @c false. 104 */ 105 static const AtomicValue::Ptr FalseString; 106 107 /** 108 * @returns a Boolean instance carrying the boolean value @c true. 109 * Use this value instead of Boolean::fromValue() if you 110 * know what boolean value you need. 111 */ 112 static const AtomicValue::Ptr BooleanTrue; 113 114 /** 115 * @returns a Boolean instance carrying the boolean value @c true. 116 * Use this value instead of Boolean::fromValue() if you 117 * know what boolean value you need. 118 */ 119 static const AtomicValue::Ptr BooleanFalse; 120 121 /** 122 * Not-a-Numeric typed as @c xs:double. 123 */ 124 static const AtomicValue::Ptr DoubleNaN; 125 126 /** 127 * Not-a-Number typed as @c xs:float, <tt>xs:float("NaN")</tt>. 128 */ 129 static const AtomicValue::Ptr FloatNaN; 130 131 /** 132 * Zero(0) typed as @c xs:integer, <tt>xs:integer("0")</tt>. 133 */ 134 static const Item IntegerZero; 135 136 /** 137 * An empty, "", @c xs:anyURI. 138 */ 139 static const AtomicValue::Ptr EmptyAnyURI; 140 141 /** 142 * The empty sequence. 143 */ 144 static const EmptyIterator<Item>::Ptr emptyIterator; 145 146 /** 147 * <tt>xs:float("-INF")</tt> 148 */ 149 static const AtomicValue::Ptr NegativeInfFloat; 150 151 /** 152 * <tt>xs:float("INF")</tt> 153 */ 154 static const AtomicValue::Ptr InfFloat; 155 156 /** 157 * <tt>xs:double("-INF")</tt> 158 */ 159 static const AtomicValue::Ptr NegativeInfDouble; 160 161 /** 162 * <tt>xs:double("INF")</tt> 163 */ 164 static const AtomicValue::Ptr InfDouble; 165 166 /** 167 * <tt>xs:float("1")</tt> 168 */ 169 static const AtomicValue::Ptr FloatOne; 170 /** 171 * <tt>xs:double("1")</tt> 172 */ 173 static const AtomicValue::Ptr DoubleOne; 174 /** 175 * <tt>xs:decimal("1")</tt> 176 */ 177 static const AtomicValue::Ptr DecimalOne; 178 179 /** 180 * <tt>xs:integer("1")</tt> 181 */ 182 static const Item IntegerOne; 183 184 /** 185 * <tt>xs:integer("-1")</tt> 186 */ 187 static const Item IntegerOneNegative; 188 189 /** 190 * <tt>xs:double("0")</tt> 191 */ 192 static const AtomicValue::Ptr DoubleZero; 193 194 /** 195 * <tt>xs:float("0")</tt> 196 */ 197 static const AtomicValue::Ptr FloatZero; 198 /** 199 * <tt>xs:integer("0")</tt> 200 */ 201 static const AtomicValue::Ptr DecimalZero; 202 203 /** 204 * The @c xs:dayTimeDuration value PT0S 205 */ 206 static const DayTimeDuration::Ptr DayTimeDurationZero; 207 208 /** 209 * The @c xs:yearMonthDuration value P0M 210 */ 211 static const DayTimeDuration::Ptr YearMonthDurationZero; 212 213 private: 214 /** 215 * The constructor is private because this class is not meant to be instantiated, 216 * but should only be used via its static const members. 217 */ 218 inline CommonValues(); 219 220 Q_DISABLE_COPY(CommonValues) 221 }; 222 } 223 224 QT_END_NAMESPACE 225 226 QT_END_HEADER 227 228 #endif 229