quserfunctioncallsite_p.h

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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_UserFunctionCallsite_H
#define Patternist_UserFunctionCallsite_H

#include "qcallsite_p.h"
#include "qfunctionsignature_p.h"
#include "qunlimitedcontainer_p.h"
#include "quserfunction_p.h"
#include "qvariabledeclaration_p.h"

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class UserFunctionCallsite : public CallSite
    {
    public:
        typedef QExplicitlySharedDataPointer<UserFunctionCallsite> Ptr;
        typedef QList<UserFunctionCallsite::Ptr> List;

        UserFunctionCallsite(const QXmlName name,
                             const FunctionSignature::Arity arity);

        virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
        virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
        virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
        virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;

        virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
                                          const SequenceType::Ptr &reqType);

        virtual Expression::Ptr compress(const StaticContext::Ptr &context);

        virtual Expression::Properties properties() const;

        virtual SequenceType::List expectedOperandTypes() const;

        virtual SequenceType::Ptr staticType() const;
        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;

        virtual ID id() const;

        void setSource(const UserFunction::Ptr &userFunction,
                       const VariableSlotID cacheSlotOffset);

        bool isSignatureValid(const FunctionSignature::Ptr &sign) const;

        FunctionSignature::Arity arity() const;

        inline Expression::Ptr body() const
        {
            return m_body;
        }

        virtual bool configureRecursion(const CallTargetDescription::Ptr &sign);
        virtual CallTargetDescription::Ptr callTargetDescription() const;

    private:
        DynamicContext::Ptr bindVariables(const DynamicContext::Ptr &context) const;

        const FunctionSignature::Arity  m_arity;
        VariableSlotID                  m_expressionSlotOffset;

        Expression::Ptr                 m_body;
        UserFunction::Ptr               m_functionDeclaration;
    };

    static inline QString formatFunction(const UserFunctionCallsite::Ptr &func)
    {
        Q_UNUSED(func);
        // TODO TODO TODO
        // TODO Make UserFunctionCallsite always use a FunctionSignature
        return QLatin1String("<span class='XQuery-function'>")  +
               QString() +
               //escape(func->name()->toString())                 +
               QLatin1String("</span>");
    }
}

QT_END_NAMESPACE

QT_END_HEADER

#endif