/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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//
//  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_SystemPropertyFN_H
#define Patternist_SystemPropertyFN_H

#include <private/qstaticnamespacescontainer_p.h>

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short Implements XSL-T 2.0's XPath function <tt>fn:system-property()</tt>.
     *
     * @see <a href="http://www.w3.org/TR/xslt20/#system-property">XSL Transformations
     * (XSLT) Version 2.0, 16.6.5 system-property</a>
     * @author Frans Englich <frans.englich@nokia.com>
     * @ingroup Patternist_functions
     */
    class SystemPropertyFN : public StaticNamespacesContainer
    {
    public:
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    private:
        /**
         * Returns a string representation for @p property as defined
         * for the system properties in "XSL Transformations (XSLT)
         * Version 2.0, 16.6.5 system-property". Hence, this function
         * handles only the properties specified in the XSL namespace, and returns
         * an empty string if an unrecognized property is asked for.
         */
        static QString retrieveProperty(const QXmlName name);
    };
}

QT_END_NAMESPACE

#endif