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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_ContextFNs_H

#define Patternist_ContextFNs_H

#include "qfunctioncall_p.h"

/**

 * @file

 * @short Contains classes implementing the functions found in

 * <a href="http://www.w3.org/TR/xpath-functions/#context">XQuery 1.0 and

 * XPath 2.0 Functions and Operators, 16 Context Functions</a>.

 *

 * @ingroup Patternist_functions

 */

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist

{

    /**

     * @short Implements the function <tt>fn:position()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-position">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.1 fn:position</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class PositionFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:last()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-last">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.2 fn:last</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class LastFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:implicit-timezone()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-implicit-timezone">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.6 fn:implicit-timezone</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class ImplicitTimezoneFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:current-dateTime()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-current-dateTime">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.3 fn:current-dateTime</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class CurrentDateTimeFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:current-date()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-current-date">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.4 fn:current-date</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class CurrentDateFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:current-time()</tt>.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-current-time">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.5 fn:current-date</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class CurrentTimeFN : public FunctionCall

    {

    public:

        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;

    };

    /**

     * @short Implements the function <tt>fn:default-collation()</tt>.

     *

     * This is done by rewriting to StaticContext::defaultCollation() at the typeCheck() stage.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-default-collation">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.7 fn:default-collation</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class DefaultCollationFN : public FunctionCall

    {

    public:

        virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,

                                          const SequenceType::Ptr &reqType);

    };

    /**

     * @short Implements the function <tt>fn:static-base-uri()</tt>.

     *

     * This is done by rewriting to StaticContext::baseURI() at the typeCheck() stage.

     *

     * @see <a href="http://www.w3.org/TR/xpath-functions/#func-static-base-uri">XQuery 1.0

     * and XPath 2.0 Functions and Operators, 16.8 fn:static-base-uri</a>

     * @ingroup Patternist_functions

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class StaticBaseURIFN : public FunctionCall

    {

    public:

        virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,

                                          const SequenceType::Ptr &reqType);

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif