summaryrefslogtreecommitdiffstats
path: root/src/xmlpatterns/expr/qcastableas_p.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/xmlpatterns/expr/qcastableas_p.h')
-rw-r--r--src/xmlpatterns/expr/qcastableas_p.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qcastableas_p.h b/src/xmlpatterns/expr/qcastableas_p.h
new file mode 100644
index 0000000..b1b2ecf
--- /dev/null
+++ b/src/xmlpatterns/expr/qcastableas_p.h
@@ -0,0 +1,111 @@
+/****************************************************************************
+**
+** 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// 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_CastableAs_H
+#define Patternist_CastableAs_H
+
+#include "qsinglecontainer_p.h"
+#include "qcastingplatform_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+
+ /**
+ * @short Implements XPath 2.0's <tt>castable as</tt> expression.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath20/#id-castable">XML Path Language
+ * (XPath) 2.0, 3.10.3 Castable</a>
+ * @author Frans Englich <fenglich@trolltech.com>
+ * @ingroup Patternist_expressions
+ */
+ class CastableAs : public SingleContainer,
+ public CastingPlatform<CastableAs, false>
+ {
+ public:
+ CastableAs(const Expression::Ptr &operand,
+ const SequenceType::Ptr &targetType);
+
+ virtual bool evaluateEBV(const DynamicContext::Ptr &) const;
+
+ /**
+ * Overridden to const fold to @c true when the target type
+ * is a type which casting to always succeeds. This is
+ * the type identical to the target type, <tt>xs:string</tt>,
+ * and <tt>xs:untypedAtomic</tt>.
+ */
+ virtual Expression::Ptr compress(const StaticContext::Ptr &context);
+ virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
+ const SequenceType::Ptr &reqType);
+
+ virtual SequenceType::List expectedOperandTypes() const;
+ virtual SequenceType::Ptr staticType() const;
+
+ virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
+
+ inline ItemType::Ptr targetType() const
+ {
+ return m_targetType->itemType();
+ }
+
+ private:
+ const SequenceType::Ptr m_targetType;
+ };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif