Long live Qt 4.5!

1 files changed, 199 insertions, 0 deletions

diff --git a/src/xmlpatterns/expr/qcomparisonplatform.cpp b/src/xmlpatterns/expr/qcomparisonplatform.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
+ * @short This file is included by qcomparisonplatform_p.h.
+ * If you need includes in this file, put them in qcomparisonplatform_p.h, outside of the namespace.
+ */
+
+template <typename TSubClass, bool issueError,
+          AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode>
+bool ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>::
+flexibleCompare(const Item &it1,
+                const Item &it2,
+                const DynamicContext::Ptr &context) const
+{
+    if(m_comparator)
+        /* The comparator was located at compile time. */
+        return compare(it1, it2, m_comparator, operatorID());
+    else
+    {
+        const AtomicComparator::Ptr cp(fetchComparator(it1.type(),
+                                                       it2.type(),
+                                                       context));
+
+        return cp ? compare(it1, it2, cp, operatorID()) : false;
+    }
+}
+
+template <typename TSubClass, bool issueError,
+          AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode>
+AtomicComparator::ComparisonResult
+ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>::
+detailedFlexibleCompare(const Item &it1,
+                        const Item &it2,
+                        const DynamicContext::Ptr &context) const
+{
+    AtomicComparator::Ptr comp;
+
+    if(m_comparator)
+        comp = m_comparator;
+    else
+    {
+        comp = fetchComparator(it1.type(),
+                               it2.type(),
+                               context);
+    }
+
+    Q_ASSERT_X(operatorID() == AtomicComparator::OperatorLessThanNaNLeast || operatorID() == AtomicComparator::OperatorLessThanNaNGreatest,
+               Q_FUNC_INFO, "Only OperatorLessThan is currently supported for this function.");
+    return comp->compare(it1, operatorID(), it2);
+}
+
+template <typename TSubClass, bool issueError,
+          AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode>
+bool ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>::
+compare(const Item &oand1,
+        const Item &oand2,
+        const AtomicComparator::Ptr &comp,
+        const AtomicComparator::Operator op) const
+{
+    Q_ASSERT(oand1);
+    Q_ASSERT(oand2);
+    Q_ASSERT(comp);
+
+    switch(op)
+    {
+        case AtomicComparator::OperatorEqual:
+            return comp->equals(oand1, oand2);
+        case AtomicComparator::OperatorNotEqual:
+            return !comp->equals(oand1, oand2);
+        case AtomicComparator::OperatorLessThanNaNLeast:
+        case AtomicComparator::OperatorLessThanNaNGreatest:
+        /* Fallthrough. */
+        case AtomicComparator::OperatorLessThan:
+            return comp->compare(oand1, op, oand2) == AtomicComparator::LessThan;
+        case AtomicComparator::OperatorGreaterThan:
+            return comp->compare(oand1, op, oand2) == AtomicComparator::GreaterThan;
+        case AtomicComparator::OperatorLessOrEqual:
+        {
+            const AtomicComparator::ComparisonResult ret = comp->compare(oand1, op, oand2);
+            return ret == AtomicComparator::LessThan || ret == AtomicComparator::Equal;
+        }
+        case(AtomicComparator::OperatorGreaterOrEqual):
+        {
+            const AtomicComparator::ComparisonResult ret = comp->compare(oand1, op, oand2);
+            return ret == AtomicComparator::GreaterThan || ret == AtomicComparator::Equal;
+        }
+    }
+
+    /* GCC unbarfer, this line should never be reached. */
+    Q_ASSERT(false);
+    return false;
+}
+
+template <typename TSubClass, bool issueError,
+          AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode>
+AtomicComparator::Ptr ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>::
+fetchComparator(const ItemType::Ptr &t1,
+                const ItemType::Ptr &t2,
+                const ReportContext::Ptr &context) const
+{
+    Q_ASSERT(t1);
+    Q_ASSERT(t2);
+
+    if(*BuiltinTypes::xsAnyAtomicType == *t1    ||
+       *BuiltinTypes::xsAnyAtomicType == *t2    ||
+       *BuiltinTypes::item == *t1               ||
+       *BuiltinTypes::item == *t2               ||
+       *BuiltinTypes::numeric == *t1            ||
+       *BuiltinTypes::numeric == *t2            ||
+       *CommonSequenceTypes::Empty == *t1       ||
+       *CommonSequenceTypes::Empty == *t2)
+    {
+        /* The static type of(at least) one of the operands could not
+         * be narrowed further, so we do the operator
+         * lookup at runtime.
+         */
+        return AtomicComparator::Ptr();
+    }
+
+    const AtomicComparatorLocator::Ptr locator
+        (static_cast<const AtomicType *>(t1.data())->comparatorLocator());
+
+    if(!locator)
+    {
+        if(issueError)
+        {
+            context->error(QtXmlPatterns::tr("No comparisons can be done involving the type %1.")
+                                            .arg(formatType(context->namePool(), t1)),
+                                       errorCode, static_cast<const TSubClass *>(this)->actualReflection());
+        }
+        return AtomicComparator::Ptr();
+    }
+
+    const AtomicComparator::Ptr comp(static_cast<const AtomicType *>(t2.data())->accept(locator, operatorID(),
+                                                                                       static_cast<const TSubClass *>(this)->actualReflection()));
+
+    if(comp)
+        return comp;
+    else if(issueError)
+    {
+        context->error(QtXmlPatterns::tr("Operator %1 is not available between atomic values of type %2 and %3.")
+                                        .arg(formatKeyword(AtomicComparator::displayName(operatorID(),
+                                                                                         comparisonType)),
+                                             formatType(context->namePool(), t1),
+                                             formatType(context->namePool(), t2)),
+                                   errorCode, static_cast<const TSubClass *>(this)->actualReflection());
+    }
+
+    return AtomicComparator::Ptr();
+}
+
+template <typename TSubClass, bool issueError,
+          AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode>
+void ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>::
+prepareComparison(const AtomicComparator::Ptr &c)
+{
+    m_comparator = c;
+}
+