--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qorderby_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,183 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef Patternist_OrderBy_H
+#define Patternist_OrderBy_H
+
+#include "qatomiccomparator_p.h"
+#include "qcomparisonplatform_p.h"
+#include "qsinglecontainer_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+ class ReturnOrderBy;
+
+ /**
+ * @short Performs the sorting by being a parent to ForClause.
+ *
+ * The child of the ForClause is a ReturnOrderBy expression, which collects
+ * the sort keys and values.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ * @ingroup Patternist_expressions
+ */
+ class OrderBy : public SingleContainer
+ {
+ public:
+ enum Stability
+ {
+ StableOrder,
+ UnstableOrder
+ };
+
+ /**
+ * This class is value based.
+ */
+ class OrderSpec : public ComparisonPlatform<OrderBy::OrderSpec,
+ true, /* Yes, issue errors. */
+ AtomicComparator::AsValueComparison>
+ {
+ public:
+ /**
+ * We want this guy to be public.
+ */
+ using ComparisonPlatform<OrderBy::OrderSpec, true, AtomicComparator::AsValueComparison>::detailedFlexibleCompare;
+
+ typedef QVector<OrderSpec> Vector;
+
+ enum Direction
+ {
+ Ascending,
+ Descending
+ };
+
+ /**
+ * @short Default constructor, which is needed by QVector.
+ */
+ inline OrderSpec()
+ {
+ }
+
+ inline OrderSpec(const Direction dir,
+ const StaticContext::OrderingEmptySequence orderingEmpty) : direction(dir),
+ orderingEmptySequence(orderingEmpty)
+ {
+ }
+
+ void prepare(const Expression::Ptr &source,
+ const StaticContext::Ptr &context);
+
+ const SourceLocationReflection *actualReflection() const
+ {
+ return m_expr.data();
+ }
+
+ private:
+ Expression::Ptr m_expr;
+
+ public:
+ /**
+ * We place these afterwards, such that m_expr gets aligned at the
+ * start of the address.
+ */
+ Direction direction;
+
+ StaticContext::OrderingEmptySequence orderingEmptySequence;
+
+ inline AtomicComparator::Operator operatorID() const
+ {
+ return orderingEmptySequence == StaticContext::Least ? AtomicComparator::OperatorLessThanNaNLeast
+ : AtomicComparator::OperatorLessThanNaNGreatest;
+ }
+
+ };
+
+ OrderBy(const Stability stability,
+ const OrderSpec::Vector &orderSpecs,
+ const Expression::Ptr &operand,
+ ReturnOrderBy *const returnOrderBy);
+
+ virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
+ virtual SequenceType::Ptr staticType() const;
+ virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
+ const SequenceType::Ptr &reqType);
+ virtual Expression::Ptr compress(const StaticContext::Ptr &context);
+ virtual SequenceType::List expectedOperandTypes() const;
+ virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
+
+ inline Item::Iterator::Ptr mapToSequence(const Item &i,
+ const DynamicContext::Ptr &context) const;
+ virtual Properties properties() const;
+
+ private:
+ /**
+ * Needed when calling makeSequenceMappingIterator().
+ */
+ typedef QExplicitlySharedDataPointer<const OrderBy> ConstPtr;
+
+ const Stability m_stability;
+ OrderSpec::Vector m_orderSpecs;
+ ReturnOrderBy *const m_returnOrderBy;
+ };
+
+ /* TODO Q_DECLARE_TYPEINFO(OrderBy::OrderSpec, Q_MOVABLE_TYPE); Breaks,
+ * probably because it's nested. */
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif