/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtXmlPatterns module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ // // W A R N I N G // ------------- // // This file is not part of the Qt API. It exists purely as an // implementation detail. This header file may change from version to // version without notice, or even be removed. // // We mean it. #ifndef Patternist_DerivedInteger_H #define Patternist_DerivedInteger_H #include "qbuiltintypes_p.h" #include "qinteger_p.h" #include "qpatternistlocale_p.h" #include "qvalidationerror_p.h" QT_BEGIN_HEADER QT_BEGIN_NAMESPACE namespace QPatternist { /** * @relates DerivedInteger */ enum DerivedIntegerLimitsUsage { None = 1, LimitUpwards = 2, LimitDownwards = 4, LimitBoth = LimitUpwards | LimitDownwards }; enum { IgnorableSignedValue = 0, IgnorableUnsignedValue = 0 }; template class DerivedInteger; template class DerivedIntegerDetails; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef qint8 StorageType; typedef xsInteger TemporaryStorageType; static const StorageType maxInclusive = 127; static const StorageType minInclusive = -128; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef qint32 StorageType; typedef xsInteger TemporaryStorageType; static const StorageType maxInclusive = Q_INT64_C(2147483647); static const StorageType minInclusive = Q_INT64_C(-2147483648); static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef qint64 StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = Q_INT64_C(9223372036854775807); /** * This messy arithmetic expression ensures that we don't get a warning * on neither GCC nor MSVC. */ static const StorageType minInclusive = -(Q_INT64_C(9223372036854775807)) - 1; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef xsInteger StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = -1; static const StorageType minInclusive = IgnorableSignedValue; static const DerivedIntegerLimitsUsage limitsUsage = LimitUpwards; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef xsInteger StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = IgnorableSignedValue; static const StorageType minInclusive = 0; static const DerivedIntegerLimitsUsage limitsUsage = LimitDownwards; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef xsInteger StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = 0; static const StorageType minInclusive = IgnorableSignedValue; static const DerivedIntegerLimitsUsage limitsUsage = LimitUpwards; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef xsInteger StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = IgnorableSignedValue; static const StorageType minInclusive = 1; static const DerivedIntegerLimitsUsage limitsUsage = LimitDownwards; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef qint16 StorageType; typedef xsInteger TemporaryStorageType; static const StorageType maxInclusive = 32767; static const StorageType minInclusive = -32768; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef quint8 StorageType; typedef qint64 TemporaryStorageType; static const StorageType maxInclusive = 255; static const StorageType minInclusive = 0; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef quint32 StorageType; typedef qint64 TemporaryStorageType; static const StorageType maxInclusive = Q_UINT64_C(4294967295); static const StorageType minInclusive = 0; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef quint64 StorageType; typedef StorageType TemporaryStorageType; static const StorageType maxInclusive = Q_UINT64_C(18446744073709551615); static const StorageType minInclusive = 0; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; template<> class DerivedIntegerDetails { private: friend class DerivedInteger; typedef quint16 StorageType; typedef qint64 TemporaryStorageType; static const StorageType maxInclusive = 65535; static const StorageType minInclusive = 0; static const DerivedIntegerLimitsUsage limitsUsage = LimitBoth; /** * Disable the default constructor. */ DerivedIntegerDetails() {} Q_DISABLE_COPY(DerivedIntegerDetails) }; /** * @short Represents instances of derived @c xs:integer types, such as @c * xs:byte. * * @author Frans Englich * @ingroup Patternist_xdm */ template class DerivedInteger : public Numeric { private: typedef typename DerivedIntegerDetails::StorageType StorageType; typedef typename DerivedIntegerDetails::TemporaryStorageType TemporaryStorageType; static const StorageType maxInclusive = DerivedIntegerDetails::maxInclusive; static const StorageType minInclusive = DerivedIntegerDetails::minInclusive; static const DerivedIntegerLimitsUsage limitsUsage = DerivedIntegerDetails::limitsUsage; const StorageType m_value; inline DerivedInteger(const StorageType num) : m_value(num) { } /** * By refactoring out the simple comparison below into a template * function, we avoid the warning "warning: comparison of unsigned expression < 0 is always false" with gcc * when the class is instantiated with TypeUnsignedLong. The warning is * a false positive since we check wehther LimitUpwards is set before * instantiating. * * This template function exists for no other reason. */ template static bool lessThan(const A &a, const B &b) { return a < b; } /** * This function exists for the same reason that lessThan() do. */ template static bool largerOrEqual(const A &a, const B &b) { return qint64(a) >= b; } public: static ItemType::Ptr itemType() { switch(DerivedType) { case TypeByte: return BuiltinTypes::xsByte; case TypeInt: return BuiltinTypes::xsInt; case TypeLong: return BuiltinTypes::xsLong; case TypeNegativeInteger: return BuiltinTypes::xsNegativeInteger; case TypeNonNegativeInteger: return BuiltinTypes::xsNonNegativeInteger; case TypeNonPositiveInteger: return BuiltinTypes::xsNonPositiveInteger; case TypePositiveInteger: return BuiltinTypes::xsPositiveInteger; case TypeShort: return BuiltinTypes::xsShort; case TypeUnsignedByte: return BuiltinTypes::xsUnsignedByte; case TypeUnsignedInt: return BuiltinTypes::xsUnsignedInt; case TypeUnsignedLong: return BuiltinTypes::xsUnsignedLong; case TypeUnsignedShort: return BuiltinTypes::xsUnsignedShort; } Q_ASSERT(false); return ItemType::Ptr(); } static AtomicValue::Ptr fromValue(const NamePool::Ptr &np, const TemporaryStorageType num) { /* If we use minInclusive when calling lessThan(), we for some * reason get a linker error with GCC. Using this temporary * variable solves it. */ const StorageType minimum = minInclusive; if((limitsUsage & LimitUpwards) && num > maxInclusive) { return ValidationError::createError(QtXmlPatterns::tr( "Value %1 of type %2 exceeds maximum (%3).") .arg(formatData(static_cast(num))) .arg(formatType(np, itemType())) .arg(formatData(static_cast(maxInclusive)))); } else if((limitsUsage & LimitDownwards) && lessThan(num, minimum)) { return ValidationError::createError(QtXmlPatterns::tr( "Value %1 of type %2 is below minimum (%3).") .arg(formatData(static_cast(num))) .arg(formatType(np, itemType())) .arg(formatData(static_cast(minInclusive)))); } else return AtomicValue::Ptr(new DerivedInteger(num)); } static AtomicValue::Ptr fromValueUnchecked(const TemporaryStorageType num) { return AtomicValue::Ptr(new DerivedInteger(num)); } /** * Constructs an instance from the lexical * representation @p strNumeric. */ static AtomicValue::Ptr fromLexical(const NamePool::Ptr &np, const QString &strNumeric) { bool conversionOk = false; TemporaryStorageType num; /* Depending on the type, we need to call different conversion * functions on QString. */ switch(DerivedType) { case TypeUnsignedLong: { /* Qt decides to flag '-' as invalid, so remove it before. */ if(strNumeric.contains(QLatin1Char('-'))) { num = QString(strNumeric).remove(QLatin1Char('-')).toULongLong(&conversionOk); if(num != 0) conversionOk = false; } else num = strNumeric.toULongLong(&conversionOk); break; } default: { num = strNumeric.toLongLong(&conversionOk); break; } } if(conversionOk) return fromValue(np, num); else return ValidationError::createError(); } inline StorageType storedValue() const { return m_value; } /** * Determines the Effective %Boolean Value of this number. * * @returns @c false if the number is 0, otherwise @c true. */ bool evaluateEBV(const QExplicitlySharedDataPointer &) const { return m_value != 0; } virtual QString stringValue() const { return QString::number(m_value); } virtual ItemType::Ptr type() const { return itemType(); } virtual xsDouble toDouble() const { return static_cast(m_value); } virtual xsInteger toInteger() const { return m_value; } virtual xsFloat toFloat() const { return static_cast(m_value); } virtual xsDecimal toDecimal() const { return static_cast(m_value); } virtual Numeric::Ptr round() const { /* xs:integerS never have a mantissa. */ return Numeric::Ptr(static_cast(const_cast(Integer::fromValue(m_value).asAtomicValue()))); } virtual Numeric::Ptr roundHalfToEven(const xsInteger) const { return Numeric::Ptr(static_cast(const_cast(Integer::fromValue(m_value).asAtomicValue()))); } virtual Numeric::Ptr floor() const { return Numeric::Ptr(static_cast(const_cast(Integer::fromValue(m_value).asAtomicValue()))); } virtual Numeric::Ptr ceiling() const { return Numeric::Ptr(static_cast(const_cast(Integer::fromValue(m_value).asAtomicValue()))); } virtual Numeric::Ptr abs() const { /* We unconditionally create an Integer even if we're a positive * value, because one part of this is the type change to * xs:integer. * * We've manually inlined qAbs() and invoke xsInteger's * constructor. The reason being that we other gets truncation down * to StorageType. See for instance XQTS test case absint1args-1. */ return Numeric::Ptr(static_cast(const_cast(Integer::fromValue(largerOrEqual(m_value, 0) ? xsInteger(m_value) : -xsInteger(m_value)).asAtomicValue()))); } /** * @returns always @c false, @c xs:DerivedInteger doesn't have * not-a-number in its value space. */ virtual bool isNaN() const { return false; } /** * @returns always @c false, @c xs:DerivedInteger doesn't have * infinity in its value space. */ virtual bool isInf() const { return false; } virtual Item toNegated() const { return Integer::fromValue(-xsInteger(m_value)); } virtual bool isSigned() const { switch(DerivedType) { /* Fallthrough all these. */ case TypeByte: case TypeInt: case TypeLong: case TypeNegativeInteger: case TypeNonNegativeInteger: case TypeNonPositiveInteger: case TypePositiveInteger: case TypeShort: return true; /* Fallthrough all these. */ case TypeUnsignedByte: case TypeUnsignedInt: case TypeUnsignedLong: case TypeUnsignedShort: return false; } return false; } virtual qulonglong toUnsignedInteger() const { switch(DerivedType) { /* Fallthrough all these. */ case TypeByte: case TypeInt: case TypeLong: case TypeNegativeInteger: case TypeNonNegativeInteger: case TypeNonPositiveInteger: case TypePositiveInteger: case TypeShort: Q_ASSERT_X(false, Q_FUNC_INFO, "It makes no sense to call this function, see Numeric::toUnsignedInteger()."); /* Fallthrough all these. */ case TypeUnsignedByte: case TypeUnsignedInt: case TypeUnsignedLong: case TypeUnsignedShort: return m_value; } return 0; } }; } QT_END_NAMESPACE QT_END_HEADER #endif