From e1b2c9deb5943faae2b29be6a5c006f75bb73f06 Mon Sep 17 00:00:00 2001
From: Qt by Nokia <qt-info@nokia.com>
Date: Wed, 27 Apr 2011 12:05:43 +0200
Subject: Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
---
 src/xmlpatterns/expr/qcurrentitemstore.cpp | 139 +++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/xmlpatterns/expr/qcurrentitemstore.cpp

(limited to 'src/xmlpatterns/expr/qcurrentitemstore.cpp')

diff --git a/src/xmlpatterns/expr/qcurrentitemstore.cpp b/src/xmlpatterns/expr/qcurrentitemstore.cpp
new file mode 100644
index 0000000..0bfab8b
--- /dev/null
+++ b/src/xmlpatterns/expr/qcurrentitemstore.cpp
@@ -0,0 +1,139 @@
+/****************************************************************************
+**
+** 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 "qcurrentitemcontext_p.h"
+#include "qstaticcurrentcontext_p.h"
+
+#include "qcurrentitemstore_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+CurrentItemStore::CurrentItemStore(const Expression::Ptr &operand) : SingleContainer(operand)
+{
+}
+
+DynamicContext::Ptr CurrentItemStore::createContext(const DynamicContext::Ptr &old) const
+{
+    return DynamicContext::Ptr(new CurrentItemContext(old->contextItem(), old));
+}
+
+bool CurrentItemStore::evaluateEBV(const DynamicContext::Ptr &context) const
+{
+    return m_operand->evaluateEBV(createContext(context));
+}
+
+Item::Iterator::Ptr CurrentItemStore::evaluateSequence(const DynamicContext::Ptr &context) const
+{
+    return m_operand->evaluateSequence(createContext(context));
+}
+
+Item CurrentItemStore::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    return m_operand->evaluateSingleton(createContext(context));
+}
+
+SequenceType::Ptr CurrentItemStore::staticType() const
+{
+    return m_operand->staticType();
+}
+
+SequenceType::List CurrentItemStore::expectedOperandTypes() const
+{
+    SequenceType::List result;
+    result.append(CommonSequenceTypes::ZeroOrMoreItems);
+    return result;
+}
+
+StaticContext::Ptr CurrentItemStore::newStaticContext(const StaticContext::Ptr &context)
+{
+    /* It might be we are generated despite there is no focus. In that case
+     * an error will reported in case current() is used, but in any case we cannot
+     * crash, so use item() in case we have no focus.
+     *
+     * Such a case is when we're inside a named template, and it's invoked
+     * without focus. */
+    const ItemType::Ptr t(context->contextItemType());
+    return StaticContext::Ptr(new StaticCurrentContext(t ? t : BuiltinTypes::item, context));
+}
+
+Expression::Ptr CurrentItemStore::compress(const StaticContext::Ptr &context)
+{
+    const Expression::Ptr me(SingleContainer::compress(newStaticContext(context)));
+
+    if(me != this)
+        return me;
+    else
+    {
+        /* If fn:current() isn't called, there's no point in us sticking
+         * around. */
+        if(m_operand->deepProperties().testFlag(RequiresCurrentItem))
+            return me;
+        else
+            return m_operand;
+    }
+}
+
+Expression::Ptr CurrentItemStore::typeCheck(const StaticContext::Ptr &context,
+                                            const SequenceType::Ptr &reqType)
+{
+    return SingleContainer::typeCheck(newStaticContext(context), reqType);
+}
+
+ExpressionVisitorResult::Ptr CurrentItemStore::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+const SourceLocationReflection *CurrentItemStore::actualReflection() const
+{
+    return m_operand->actualReflection();
+}
+
+Expression::Properties CurrentItemStore::properties() const
+{
+    return m_operand->properties() & (RequiresFocus | IsEvaluated | DisableElimination);
+}
+
+QT_END_NAMESPACE
-- 
cgit v1.2.1