qfunctionsignature_p.h

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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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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_FunctionSignature_H
#define Patternist_FunctionSignature_H

template<typename Key, typename Value> class QHash;
template<typename T> class QList;

#include <QSharedData>

#include "qcalltargetdescription_p.h"
#include "qexpression_p.h"
#include "qfunctionargument_p.h"
#include "qpatternistlocale_p.h"
#include "qprimitives_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{

    class Q_AUTOTEST_EXPORT FunctionSignature : public CallTargetDescription
    {
    public:
        enum
        {
            UnlimitedArity = -1
        };

        typedef QExplicitlySharedDataPointer<FunctionSignature> Ptr;
        typedef QHash<QXmlName, FunctionSignature::Ptr> Hash;
        typedef QList<FunctionSignature::Ptr> List;

        typedef qint16 Arity;

        FunctionSignature(const QXmlName name,
                          const Arity minArgs,
                          const Arity maxArgs,
                          const SequenceType::Ptr &returnType,
                          const Expression::Properties chars = Expression::Properties(),
                          const Expression::ID id = Expression::IDIgnorableExpression);

        void setArguments(const FunctionArgument::List &args);
        FunctionArgument::List arguments() const;

        void appendArgument(const QXmlName::LocalNameCode name,
                            const SequenceType::Ptr &type);

        bool isArityValid(const xsInteger arity) const;

        Arity minimumArguments() const;
        Arity maximumArguments() const;

        SequenceType::Ptr returnType() const;

        Expression::Properties properties() const;

        bool operator==(const FunctionSignature &other) const;

        QString displayName(const NamePool::Ptr &np) const;

        Expression::ID id() const;

    private:
        Q_DISABLE_COPY(FunctionSignature)

        const Arity                     m_minArgs;
        const Arity                     m_maxArgs;
        const SequenceType::Ptr         m_returnType;
        FunctionArgument::List          m_arguments;
        const Expression::Properties    m_props;
        const Expression::ID            m_id;
    };

    static inline QString formatFunction(const NamePool::Ptr &np, const FunctionSignature::Ptr &func)
    {
        return QLatin1String("<span class='XQuery-function'>")  +
               escape(func->displayName(np))                    +
               QLatin1String("</span>");
    }
}

QT_END_NAMESPACE

QT_END_HEADER

#endif