/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */
#ifndef STACK_FRAME_VALUES_H
#define STACK_FRAME_VALUES_H


#include <Referenceable.h>
#include <util/OpenHashTable.h>
#include <Variant.h>


class ObjectID;
class TypeComponentPath;


class StackFrameValues : public BReferenceable {
public:
                                                                StackFrameValues();
                                                                StackFrameValues(const StackFrameValues& other);
                                                                        // throws std::bad_alloc
        virtual                                         ~StackFrameValues();

                        status_t                        Init();

                        bool                            GetValue(ObjectID* variable,
                                                                        const TypeComponentPath* path,
                                                                        BVariant& _value) const;
        inline  bool                            GetValue(ObjectID* variable,
                                                                        const TypeComponentPath& path,
                                                                        BVariant& _value) const;
                        bool                            HasValue(ObjectID* variable,
                                                                        const TypeComponentPath* path) const;
        inline  bool                            HasValue(ObjectID* variable,
                                                                        const TypeComponentPath& path) const;
                        status_t                        SetValue(ObjectID* variable,
                                                                        TypeComponentPath* path,
                                                                        const BVariant& value);

private:
                        struct Key;
                        struct ValueEntry;
                        struct ValueEntryHashDefinition;

                        typedef BOpenHashTable<ValueEntryHashDefinition> ValueTable;

private:
                        StackFrameValues&       operator=(const StackFrameValues& other);

                        void                            _Cleanup();

private:
                        ValueTable*                     fValues;
};


bool
StackFrameValues::GetValue(ObjectID* variable, const TypeComponentPath& path,
        BVariant& _value) const
{
        return GetValue(variable, &path, _value);
}


bool
StackFrameValues::HasValue(ObjectID* variable, const TypeComponentPath& path)
        const
{
        return HasValue(variable, &path);
}


#endif  // STACK_FRAME_VALUES_H