/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** 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
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** rights. These rights are described in the Nokia Qt LGPL Exception
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****************************************************************************/
#include "qabstractfloat_p.h"
#include "qarithmeticexpression_p.h"
#include "qbuiltintypes_p.h"
#include "qcommonsequencetypes_p.h"
#include "qcommonvalues_p.h"
#include "qdecimal_p.h"
#include "qgenericsequencetype_p.h"
#include "qinteger_p.h"
#include "qoptimizerblocks_p.h"
#include "qsequencefns_p.h"
#include "quntypedatomicconverter_p.h"
#include "qaggregatefns_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
Item CountFN::evaluateSingleton(const DynamicContext::Ptr &context) const
{
return Integer::fromValue(m_operands.first()->evaluateSequence(context)->count());
}
Expression::Ptr CountFN::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
if(*CommonSequenceTypes::EBV->itemType() == *reqType->itemType())
{
return ByIDCreator::create(IDExistsFN, operands(), context, this)->typeCheck(context, reqType);
}
else
return FunctionCall::typeCheck(context, reqType);
}
Expression::Ptr CountFN::compress(const StaticContext::Ptr &context)
{
const Expression::Ptr me(FunctionCall::compress(context));
if(me != this)
return me;
const Cardinality card(m_operands.first()->staticType()->cardinality());
if(card.isExactlyOne())
return wrapLiteral(CommonValues::IntegerOne, context, this);
else if(card.isEmpty())
{
/* One might think that if the operand is (), that compress() would have
* evaluated us and therefore this line never be reached, but "()" can
* be combined with the DisableElimination flag. */
return wrapLiteral(CommonValues::IntegerZero, context, this);
}
else if(card.isExact())
return wrapLiteral(Integer::fromValue(card.minimum()), context, this);
else
return me;
}
Expression::Ptr AddingAggregate::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
ItemType::Ptr t1(m_operands.first()->staticType()->itemType());
if(*CommonSequenceTypes::Empty == *t1)
return me;
else if(*BuiltinTypes::xsAnyAtomicType == *t1 ||
*BuiltinTypes::numeric == *t1)
return me;
else if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t1))
{
m_operands.replace(0, Expression::Ptr(new UntypedAtomicConverter(m_operands.first(),
BuiltinTypes::xsDouble)));
t1 = m_operands.first()->staticType()->itemType();
}
else if(!BuiltinTypes::numeric->xdtTypeMatches(t1) &&
!BuiltinTypes::xsDayTimeDuration->xdtTypeMatches(t1) &&
!BuiltinTypes::xsYearMonthDuration->xdtTypeMatches(t1))
{
/* Translator, don't translate the type names. */
context->error(QtXmlPatterns::tr("The first argument to %1 cannot be "
"of type %2. It must be a numeric "
"type, xs:yearMonthDuration or "
"xs:dayTimeDuration.")
.arg(formatFunction(context->namePool(), signature()))
.arg(formatType(context->namePool(),
m_operands.first()->staticType())),
ReportContext::FORG0006, this);
}
if(!m_operands.first()->staticType()->cardinality().allowsMany())
return m_operands.first();
/* We know fetchMathematician won't attempt a rewrite of the operand, so this is safe. */
m_mather = ArithmeticExpression::fetchMathematician(m_operands.first(), m_operands.first(),
AtomicMathematician::Add, true, context,
this,
ReportContext::FORG0006);
return me;
}
Item AvgFN::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const Item::Iterator::Ptr it(m_operands.first()->evaluateSequence(context));
Item sum(it->next());
xsInteger count = 0;
while(sum)
{
++count;
const Item next(it->next());
if(!next)
break;
sum = ArithmeticExpression::flexiblyCalculate(sum, AtomicMathematician::Add,
next, m_adder, context,
this,
ReportContext::FORG0006);
};
if(!sum)
return Item();
/* Note that we use the same m_mather which was used for adding,
* can be worth to think about. */
return ArithmeticExpression::flexiblyCalculate(sum, AtomicMathematician::Div,
Integer::fromValue(count),
m_divider, context,
this,
ReportContext::FORG0006);
}
Expression::Ptr AvgFN::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
ItemType::Ptr t1(m_operands.first()->staticType()->itemType());
if(*CommonSequenceTypes::Empty == *t1)
return me;
else if(*BuiltinTypes::xsAnyAtomicType == *t1 ||
*BuiltinTypes::numeric == *t1)
return me;
else if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t1))
{
m_operands.replace(0, Expression::Ptr(new UntypedAtomicConverter(m_operands.first(),
BuiltinTypes::xsDouble)));
t1 = m_operands.first()->staticType()->itemType();
}
else if(!BuiltinTypes::numeric->xdtTypeMatches(t1) &&
!BuiltinTypes::xsDayTimeDuration->xdtTypeMatches(t1) &&
!BuiltinTypes::xsYearMonthDuration->xdtTypeMatches(t1))
{
/* Translator, don't translate the type names. */
context->error(QtXmlPatterns::tr("The first argument to %1 cannot be "
"of type %2. It must be of type %3, "
"%4, or %5.")
.arg(signature())
.arg(formatType(context->namePool(), m_operands.first()->staticType()))
.arg(formatType(context->namePool(), BuiltinTypes::numeric))
.arg(formatType(context->namePool(), BuiltinTypes::xsYearMonthDuration))
.arg(formatType(context->namePool(), BuiltinTypes::xsDayTimeDuration)),
ReportContext::FORG0006, this);
}
if(!m_operands.first()->staticType()->cardinality().allowsMany())
return m_operands.first();
/* We use CommonValues::IntegerOne here because it is an arbitrary Expression
* of type xs:integer */
Expression::Ptr op2(wrapLiteral(CommonValues::IntegerOne, context, this));
m_adder = ArithmeticExpression::fetchMathematician(m_operands.first(), m_operands.first(),
AtomicMathematician::Add, true, context, this);
m_divider = ArithmeticExpression::fetchMathematician(m_operands.first(), op2,
AtomicMathematician::Div, true, context, this);
return me;
}
SequenceType::Ptr AvgFN::staticType() const
{
const SequenceType::Ptr opt(m_operands.first()->staticType());
ItemType::Ptr t(opt->itemType());
if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t))
t = BuiltinTypes::xsDouble; /* xsUntypedAtomics are converted to xsDouble. */
else if(BuiltinTypes::xsInteger->xdtTypeMatches(t))
t = BuiltinTypes::xsDecimal;
/* else, it means the type is xsDayTimeDuration, xsYearMonthDuration,
* xsDouble, xsFloat or xsAnyAtomicType, which we use as is. */
return makeGenericSequenceType(BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t) ? t : ItemType::Ptr(BuiltinTypes::xsAnyAtomicType),
opt->cardinality().toWithoutMany());
}
Item SumFN::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const Item::Iterator::Ptr it(m_operands.first()->evaluateSequence(context));
Item sum(it->next());
while(sum)
{
const Item next(it->next());
if(!next)
break;
sum = ArithmeticExpression::flexiblyCalculate(sum, AtomicMathematician::Add,
next, m_mather, context, this,
ReportContext::FORG0006);
};
if(!sum)
{
if(m_operands.count() == 1)
return CommonValues::IntegerZero;
else
return m_operands.last()->evaluateSingleton(context);
}
return sum;
}
Expression::Ptr SumFN::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
const Expression::Ptr me(AddingAggregate::typeCheck(context, reqType));
if(*CommonSequenceTypes::Empty == *m_operands.first()->staticType()->itemType())
{
if(m_operands.count() == 1)
return wrapLiteral(CommonValues::IntegerZero, context, this);
else
return m_operands.at(1);
}
if(m_operands.count() == 1)
return me;
const ItemType::Ptr t(m_operands.at(1)->staticType()->itemType());
if(!BuiltinTypes::numeric->xdtTypeMatches(t) &&
!BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t) &&
*CommonSequenceTypes::Empty != *t &&
!BuiltinTypes::xsDayTimeDuration->xdtTypeMatches(t) &&
!BuiltinTypes::xsYearMonthDuration->xdtTypeMatches(t))
{
context->error(QtXmlPatterns::tr("The second argument to %1 cannot be "
"of type %2. It must be of type %3, "
"%4, or %5.")
.arg(formatFunction(context->namePool(), signature()))
.arg(formatType(context->namePool(), m_operands.at(1)->staticType()))
.arg(formatType(context->namePool(), BuiltinTypes::numeric))
.arg(formatType(context->namePool(), BuiltinTypes::xsYearMonthDuration))
.arg(formatType(context->namePool(), BuiltinTypes::xsDayTimeDuration)),
ReportContext::FORG0006, this);
return me;
}
return me;
}
SequenceType::Ptr SumFN::staticType() const
{
const SequenceType::Ptr t(m_operands.first()->staticType());
if(m_operands.count() == 1)
{
return makeGenericSequenceType(t->itemType() | BuiltinTypes::xsInteger,
Cardinality::exactlyOne());
}
else
{
return makeGenericSequenceType(t->itemType() | m_operands.at(1)->staticType()->itemType(),
t->cardinality().toWithoutMany());
}
}
QT_END_NAMESPACE