1 files changed, 114 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qcontextitem.cpp b/src/xmlpatterns/expr/qcontextitem.cpp
new file mode 100644
index 0000000..caa6653
--- /dev/null
+++ b/src/xmlpatterns/expr/qcontextitem.cpp
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbuiltintypes_p.h"
+#include "qcommonsequencetypes_p.h"
+#include "qgenericsequencetype_p.h"
+
+#include "qcontextitem_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+Item ContextItem::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    return context->contextItem();
+}
+
+Expression::Ptr ContextItem::compress(const StaticContext::Ptr &context)
+{
+    m_itemType = context->contextItemType();
+    return EmptyContainer::compress(context);
+}
+
+Expression::Ptr ContextItem::typeCheck(const StaticContext::Ptr &context,
+                                       const SequenceType::Ptr &reqType)
+{
+    m_itemType = context->contextItemType();
+    return EmptyContainer::typeCheck(context, reqType);
+}
+
+SequenceType::Ptr ContextItem::staticType() const
+{
+    /* We test m_itemType here because Patternist View calls staticType() before the typeCheck()
+     * stage. */
+    if(m_itemType)
+        return makeGenericSequenceType(m_itemType, Cardinality::exactlyOne());
+    else
+        return CommonSequenceTypes::ExactlyOneItem;
+}
+
+Expression::Properties ContextItem::properties() const
+{
+    return DisableElimination | RequiresContextItem | EvaluationCacheRedundant;
+}
+
+ExpressionVisitorResult::Ptr ContextItem::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+Expression::ID ContextItem::id() const
+{
+    return IDContextItem;
+}
+
+ItemType::Ptr ContextItem::expectedContextItemType() const
+{
+    return BuiltinTypes::item;
+}
+
+const SourceLocationReflection *ContextItem::actualReflection() const
+{
+    if(m_expr)
+        return m_expr.data();
+    else
+        return this;
+}
+
+void ContextItem::announceFocusType(const ItemType::Ptr &type)
+{
+    Q_ASSERT(type);
+    m_itemType = type;
+}
+
+QT_END_NAMESPACE