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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <math.h>
#include <qnumeric.h>
#include "qabstractdatetime_p.h"
#include "qabstractduration_p.h"
#include "qabstractfloat_p.h"
#include "qdaytimeduration_p.h"
#include "qdecimal_p.h"
#include "qinteger_p.h"
#include "qpatternistlocale_p.h"
#include "qatomicmathematicians_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
/* The translation strings is place here once, in order to reduce work for translators,
* and provide consistency. */
static inline QString idivZeroInvalid()
{
return QtXmlPatterns::tr("Integer division (%1) by zero (%2) is undefined.")
.arg(formatKeyword("idiv"))
.arg(formatData("0"));
}
static inline QString divZeroInvalid()
{
return QtXmlPatterns::tr("Division (%1) by zero (%2) is undefined.")
.arg(formatKeyword("div"))
.arg(formatData("0"));
}
static inline QString modZeroInvalid()
{
return QtXmlPatterns::tr("Modulus division (%1) by zero (%2) is undefined.")
.arg(formatKeyword("mod"))
.arg(formatData("0"));
}
Item DecimalMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &context) const
{
switch(op)
{
case Div:
{
if(o2.as<Numeric>()->toInteger() == 0)
{
context->error(divZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else
return toItem(Decimal::fromValue(o1.as<Numeric>()->toDecimal() / o2.as<Numeric>()->toDecimal()));
}
case IDiv:
{
if(o2.as<Numeric>()->toInteger() == 0)
{
context->error(idivZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else
return Integer::fromValue(static_cast<xsInteger>(o1.as<Numeric>()->toDecimal() /
o2.as<Numeric>()->toDecimal()));
}
case Substract:
return toItem(Decimal::fromValue(o1.as<Numeric>()->toDecimal() - o2.as<Numeric>()->toDecimal()));
case Mod:
{
if(o2.as<Numeric>()->toInteger() == 0)
{
context->error(modZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else
return toItem(Decimal::fromValue(::fmod(o1.as<Numeric>()->toDecimal(), o2.as<Numeric>()->toDecimal())));
}
case Multiply:
return toItem(Decimal::fromValue(o1.as<Numeric>()->toDecimal() * o2.as<Numeric>()->toDecimal()));
case Add:
return toItem(Decimal::fromValue(o1.as<Numeric>()->toDecimal() + o2.as<Numeric>()->toDecimal()));
}
Q_ASSERT(false);
return Item(); /* GCC unbarfer. */
}
Item IntegerMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &context) const
{
switch(op)
{
case Div:
if(o2.as<Numeric>()->toInteger() == 0)
{
context->error(divZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else /* C++ automatically performs truncation of long integer(xsInteger). */
return toItem(Decimal::fromValue(o1.as<Numeric>()->toDecimal() / o2.as<Numeric>()->toDecimal()));
case IDiv:
{
if(o2.as<Numeric>()->toInteger() == 0)
{
context->error(idivZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else /* C++ automatically performs truncation of long integer(xsInteger). */
return Integer::fromValue(o1.as<Numeric>()->toInteger() / o2.as<Numeric>()->toInteger());
}
case Substract:
return Integer::fromValue(o1.as<Numeric>()->toInteger() - o2.as<Numeric>()->toInteger());
case Mod:
{
const xsInteger divisor = o2.as<Numeric>()->toInteger();
if(divisor == 0)
{
context->error(modZeroInvalid(), ReportContext::FOAR0001, this);
return Item(); /* Silences source code analyzer warning. */
}
else
return Integer::fromValue(o1.as<Numeric>()->toInteger() % divisor);
}
case Multiply:
return Integer::fromValue(o1.as<Numeric>()->toInteger() * o2.as<Numeric>()->toInteger());
case Add:
return Integer::fromValue(o1.as<Numeric>()->toInteger() + o2.as<Numeric>()->toInteger());
}
Q_ASSERT(false);
return Item(); /* GCC unbarfer. */
}
Item DurationNumericMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &context) const
{
Q_ASSERT(op == Div || op == Multiply);
const AbstractDuration::Ptr duration(o1.as<AbstractDuration>());
const xsDouble dbl = o2.as<Numeric>()->toDouble();
switch(op)
{
case Div:
{
if(qIsInf(dbl))
return duration->fromValue(0);
else if(qIsNaN(dbl))
{
context->error(QtXmlPatterns::tr(
"Dividing a value of type %1 by %2 (not-a-number) "
"is not allowed.")
.arg(formatType(context->namePool(),
duration->type()))
.arg(formatData("NaN")),
ReportContext::FOCA0005,
this);
return Item();
}
else if(Double::isEqual(dbl, 0))
{
context->error(QtXmlPatterns::tr(
"Dividing a value of type %1 by %2 or %3 (plus or "
"minus zero) is not allowed.")
.arg(formatType(context->namePool(),
duration->type()))
.arg(formatData("-0"))
.arg(formatData("0")),
ReportContext::FODT0002,
this);
return Item();
}
return duration->fromValue(static_cast<AbstractDuration::Value>(duration->value() / dbl));
}
case Multiply:
{
if(Double::isEqual(dbl, 0))
return duration->fromValue(0);
else if(qIsNaN(dbl))
{
context->error(QtXmlPatterns::tr(
"Dividing a value of type %1 by %2 (not-a-number) "
"is not allowed.")
.arg(formatType(context->namePool(),
duration->type()))
.arg(formatData("NaN")),
ReportContext::FOCA0005,
this);
return Item();
}
else if(qIsInf(dbl))
{
context->error(QtXmlPatterns::tr(
"Multiplication of a value of type %1 by %2 or %3 "
"(plus or minus infinity) is not allowed.")
.arg(formatType(context->namePool(),
duration->type()))
.arg(formatData("-INF"))
.arg(formatData("INF")),
ReportContext::FODT0002,
this);
return Item();
}
return duration->fromValue(static_cast<AbstractDuration::Value>(duration->value() * dbl));
}
default:
{
Q_ASSERT(false);
return Item(); /* Silence warning. */
}
}
}
Item DurationDurationMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &) const
{
const AbstractDuration::Ptr duration(o1.as<AbstractDuration>());
const AbstractDuration::Value op2 = o2.as<AbstractDuration>()->value();
switch(op)
{
case Div:
return toItem(Decimal::fromValue(static_cast<xsDecimal>(duration->value()) / op2));
case Substract:
return duration->fromValue(duration->value() - op2);
case Add:
return duration->fromValue(duration->value() + op2);
default:
{
Q_ASSERT(false);
return Item(); /* Silence warning. */
}
}
}
OperandSwitcherMathematician::
OperandSwitcherMathematician(const AtomicMathematician::Ptr &mathematician) : m_mather(mathematician)
{
Q_ASSERT(mathematician);
}
Item OperandSwitcherMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &context) const
{
return m_mather->calculate(o2, op, o1, context);
}
Item DateTimeDurationMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &context) const
{
Q_ASSERT(op == Substract || op == Add);
const AbstractDateTime::Ptr adt(o1.as<AbstractDateTime>());
const AbstractDuration::Ptr dur(o2.as<AbstractDuration>());
QDateTime dt(adt->toDateTime());
//pDebug() << "DateTimeDurationMathematician::calculate():" << dt.toString();
//dt.setDateOnly(false);
const qint8 sign = (op == Add ? 1 : -1) * (dur->isPositive() ? 1 : -1);
// TODO milli seconds
dt = dt.addSecs(sign * (dur->seconds() + dur->minutes() * 60 + dur->hours() * 60 * 60));
dt = dt.addDays(sign * dur->days());
dt = dt.addMonths(sign * dur->months());
dt = dt.addYears(sign * dur->years());
QString msg;
if(AbstractDateTime::isRangeValid(dt.date(), msg))
return adt->fromValue(dt);
else
{
context->error(msg, ReportContext::FODT0001,
this);
return Item();
}
}
Item AbstractDateTimeMathematician::calculate(const Item &o1,
const Operator op,
const Item &o2,
const QExplicitlySharedDataPointer<DynamicContext> &) const
{
Q_ASSERT(op == Substract || op == Add);
QDateTime dt1(o1.as<AbstractDateTime>()->toDateTime());
QDateTime dt2(o2.as<AbstractDateTime>()->toDateTime());
const int diff = op == Add ? dt1.secsTo(dt2) : dt2.secsTo(dt1);
return toItem(DayTimeDuration::fromSeconds(diff));
}
QT_END_NAMESPACE
|
