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Diffstat (limited to 'src/xmlpatterns/data/qdecimal.cpp')
| -rw-r--r-- | src/xmlpatterns/data/qdecimal.cpp | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/xmlpatterns/data/qdecimal.cpp b/src/xmlpatterns/data/qdecimal.cpp new file mode 100644 index 0000000..05f84b4 --- /dev/null +++ b/src/xmlpatterns/data/qdecimal.cpp @@ -0,0 +1,234 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <math.h> + +#include "qabstractfloat_p.h" +#include "qatomictype_p.h" +#include "qbuiltintypes_p.h" +#include "qvalidationerror_p.h" + +#include "qdecimal_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +Decimal::Decimal(const xsDecimal num) : m_value(num) +{ +} + +Decimal::Ptr Decimal::fromValue(const xsDecimal num) +{ + return Decimal::Ptr(new Decimal(num)); +} + +AtomicValue::Ptr Decimal::fromLexical(const QString &strNumeric) +{ + /* QString::toDouble() handles the whitespace facet. */ + const QString strNumericTrimmed(strNumeric.trimmed()); + + /* Block these out, as QString::toDouble() supports them. */ + if(strNumericTrimmed.compare(QLatin1String("-INF"), Qt::CaseInsensitive) == 0 + || strNumericTrimmed.compare(QLatin1String("INF"), Qt::CaseInsensitive) == 0 + || strNumericTrimmed.compare(QLatin1String("+INF"), Qt::CaseInsensitive) == 0 + || strNumericTrimmed.compare(QLatin1String("nan"), Qt::CaseInsensitive) == 0 + || strNumericTrimmed.contains(QLatin1Char('e')) + || strNumericTrimmed.contains(QLatin1Char('E'))) + { + return ValidationError::createError(); + } + + bool conversionOk = false; + const xsDecimal num = strNumericTrimmed.toDouble(&conversionOk); + + if(conversionOk) + return AtomicValue::Ptr(new Decimal(num)); + else + return ValidationError::createError(); +} + +bool Decimal::evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const +{ + return !Double::isEqual(m_value, 0.0); +} + +QString Decimal::stringValue() const +{ + return toString(m_value); +} + +QString Decimal::toString(const xsDecimal value) +{ + /* + * If SV is in the value space of xs:integer, that is, if there are no + * significant digits after the decimal point, then the value is converted + * from an xs:decimal to an xs:integer and the resulting xs:integer is + * converted to an xs:string using the rule above. + */ + if(Double::isEqual(::floor(value), value)) + { + /* The static_cast is identical to Integer::toInteger(). */ + return QString::number(static_cast<xsInteger>(value)); + } + else + { + int sign; + int decimalPoint; + char *result = 0; + static_cast<void>(qdtoa(value, 0, 0, &decimalPoint, &sign, 0, &result)); + /* If the copy constructor is used instead of QString::operator=(), + * it doesn't compile. I have no idea why. */ + const QString qret(QString::fromLatin1(result)); + delete result; + + QString valueAsString; + + if(sign) + valueAsString += QLatin1Char('-'); + + if(0 < decimalPoint) + { + valueAsString += qret.left(decimalPoint); + valueAsString += QLatin1Char('.'); + if (qret.size() <= decimalPoint) + valueAsString += QLatin1Char('0'); + else + valueAsString += qret.mid(decimalPoint); + } + else + { + valueAsString += QLatin1Char('0'); + valueAsString += QLatin1Char('.'); + + for(int d = decimalPoint; d < 0; d++) + valueAsString += QLatin1Char('0'); + + valueAsString += qret; + } + + return valueAsString; + } +} + +ItemType::Ptr Decimal::type() const +{ + return BuiltinTypes::xsDecimal; +} + +xsDouble Decimal::toDouble() const +{ + return static_cast<xsDouble>(m_value); +} + +xsInteger Decimal::toInteger() const +{ + return static_cast<xsInteger>(m_value); +} + +xsFloat Decimal::toFloat() const +{ + return static_cast<xsFloat>(m_value); +} + +xsDecimal Decimal::toDecimal() const +{ + return m_value; +} + +qulonglong Decimal::toUnsignedInteger() const +{ + Q_ASSERT_X(false, Q_FUNC_INFO, + "It makes no sense to call this function, see Numeric::toUnsignedInteger()."); + return 0; +} + +Numeric::Ptr Decimal::round() const +{ + return Numeric::Ptr(new Decimal(roundFloat(m_value))); +} + +Numeric::Ptr Decimal::roundHalfToEven(const xsInteger /*scale*/) const +{ + return Numeric::Ptr(); +} + +Numeric::Ptr Decimal::floor() const +{ + return Numeric::Ptr(new Decimal(static_cast<xsDecimal>(::floor(m_value)))); +} + +Numeric::Ptr Decimal::ceiling() const +{ + return Numeric::Ptr(new Decimal(static_cast<xsDecimal>(ceil(m_value)))); +} + +Numeric::Ptr Decimal::abs() const +{ + return Numeric::Ptr(new Decimal(static_cast<xsDecimal>(fabs(m_value)))); +} + +bool Decimal::isNaN() const +{ + return false; +} + +bool Decimal::isInf() const +{ + return false; +} + +Item Decimal::toNegated() const +{ + if(AbstractFloat<true>::isEqual(m_value, 0.0)) + return fromValue(0).data(); + else + return fromValue(-m_value).data(); +} + +bool Decimal::isSigned() const +{ + Q_ASSERT_X(false, Q_FUNC_INFO, + "It makes no sense to call this function, see Numeric::isSigned()."); + return false; +} + +QT_END_NAMESPACE |