Long live Qt 4.5!

1 files changed, 211 insertions, 0 deletions

diff --git a/src/xmlpatterns/functions/qcomparingaggregator.cpp b/src/xmlpatterns/functions/qcomparingaggregator.cpp
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+++ b/src/xmlpatterns/functions/qcomparingaggregator.cpp
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+/****************************************************************************
+**
+** 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/**
+ * @file qcomparingaggregator.cpp
+ * @short This file is included by qcomparingaggregator_p.h.
+ * If you need includes in this file, put them in qcomparingaggregator_p.h, outside of the namespace.
+ */
+
+template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
+inline Item
+ComparingAggregator<oper, result>::applyNumericPromotion(const Item &old,
+                                                         const Item &nev,
+                                                         const Item &newVal) const
+{
+    Q_ASSERT(old);
+    Q_ASSERT(nev);
+    Q_ASSERT(newVal);
+    const ItemType::Ptr to(old.type());
+    const ItemType::Ptr tn(nev.type());
+
+    if(!(BuiltinTypes::numeric->xdtTypeMatches(to) && BuiltinTypes::numeric->xdtTypeMatches(tn)))
+        return newVal; /* At least one of them isn't numeric. */
+    else if(BuiltinTypes::xsDouble->xdtTypeMatches(to) || BuiltinTypes::xsDouble->xdtTypeMatches(tn))
+        return toItem(Double::fromValue(newVal.as<Numeric>()->toDouble()));
+    else if(BuiltinTypes::xsFloat->xdtTypeMatches(to) || BuiltinTypes::xsFloat->xdtTypeMatches(tn))
+        return toItem(Float::fromValue(newVal.as<Numeric>()->toDouble()));
+    else if(BuiltinTypes::xsInteger->xdtTypeMatches(to) &&
+            BuiltinTypes::xsInteger->xdtTypeMatches(tn))
+        return newVal; /* Both must be xs:integer. */
+    else
+        return toItem(Decimal::fromValue(newVal.as<Numeric>()->toDecimal()));
+}
+
+template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
+Item
+ComparingAggregator<oper, result>::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    const Item::Iterator::Ptr it(m_operands.first()->evaluateSequence(context));
+    Item largest;
+
+    while(true)
+    {
+        Item next(it->next());
+
+        if(!next)
+        {
+            return largest;
+        }
+
+        AtomicComparator::Ptr comp(comparator());
+
+        if(!comp)
+        {
+            ItemType::Ptr t1(next.type());
+            Q_ASSERT(t1);
+
+            if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t1))
+            {
+                next = cast(next, context);
+                t1 = BuiltinTypes::xsDouble;
+            }
+
+            if(!largest)
+            {
+                largest = next;
+                continue;
+            }
+
+            Q_ASSERT(largest);
+            comp = fetchComparator(largest.type(), t1, context);
+            Q_ASSERT(comp);
+        }
+        else if(!largest)
+        {
+            largest = next;
+            continue;
+        }
+
+        if(comp->compare(next, operatorID(), largest) == result)
+        {
+            largest = applyNumericPromotion(largest, next, next);
+            continue;
+        }
+
+        const ItemType::Ptr t(next.type());
+
+        if(BuiltinTypes::xsDouble->xdtTypeMatches(t) &&
+           next.as<Numeric>()->isNaN())
+        {
+            return CommonValues::DoubleNaN;
+        }
+        else if(BuiltinTypes::xsFloat->xdtTypeMatches(t) &&
+                next.as<Numeric>()->isNaN())
+        {
+            if(BuiltinTypes::xsDouble->xdtTypeMatches(largest.type()))
+                return CommonValues::DoubleNaN;
+
+            /* If we have a xs:double somewhere, we must promote the NaN value to xs:double,
+             * and we really should raise error on invalid value. */
+            largest = it->next();
+
+            while(largest)
+            {
+                const ItemType::Ptr tf(largest.type());
+                if(BuiltinTypes::xsDouble->xdtTypeMatches(tf))
+                    return CommonValues::DoubleNaN;
+                else if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(tf))
+                {
+                    /* Attempt a convert, which will raise an error if it doesn't work out. */
+                    cast(largest, context);
+                    return CommonValues::DoubleNaN;
+                }
+                else if(!BuiltinTypes::numeric->xdtTypeMatches(tf))
+                {
+                    fetchComparator(BuiltinTypes::xsFloat, tf, context);
+                }
+                else
+                    largest = it->next();
+            };
+
+            return CommonValues::FloatNaN;
+        }
+        else
+            largest = applyNumericPromotion(largest, next, largest);
+    }
+}
+
+template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
+Expression::Ptr
+ComparingAggregator<oper, result>::typeCheck(const StaticContext::Ptr &context,
+                                             const SequenceType::Ptr &reqType)
+{
+    Q_ASSERT(oper == AtomicComparator::OperatorGreaterThan ||
+             oper == AtomicComparator::OperatorLessThan);
+    const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
+
+    ItemType::Ptr t1(m_operands.first()->staticType()->itemType());
+
+    if(*CommonSequenceTypes::Empty == *t1)
+        return EmptySequence::create(this, context);
+    else if(*BuiltinTypes::xsAnyAtomicType == *t1 ||
+            BuiltinTypes::numeric->xdtTypeMatches(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::xsString->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsAnyURI->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsDayTimeDuration->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsDate->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsTime->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsDateTime->xdtTypeMatches(t1) &&
+            !BuiltinTypes::xsYearMonthDuration->xdtTypeMatches(t1))
+    {
+        context->error(QtXmlPatterns::tr("The first argument to %1 cannot be of type %2.")
+                          .arg(formatFunction(context->namePool(), signature()))
+                          .arg(formatType(context->namePool(), m_operands.first()->staticType())),
+                       ReportContext::FORG0006, this);
+        return me;
+    }
+
+    if(!m_operands.first()->staticType()->cardinality().allowsMany())
+        return m_operands.first();
+
+    prepareComparison(fetchComparator(t1, t1, context));
+
+    return me;
+}
+