ChakraCore/lib/Runtime/Library/JavascriptMapIterator.h

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
#pragma once

namespace Js
{
    enum class JavascriptMapIteratorKind
    {
        Key,
        Value,
        KeyAndValue,
    };

    class JavascriptMapIterator : public DynamicObject
    {
    private:
        Field(JavascriptMap*)                          m_map;
        Field(JavascriptMap::MapDataList::Iterator)    m_mapIterator;
        Field(JavascriptMapIteratorKind)               m_kind;

    protected:
        DEFINE_VTABLE_CTOR(JavascriptMapIterator, DynamicObject);
        DEFINE_MARSHAL_OBJECT_TO_SCRIPT_CONTEXT(JavascriptMapIterator);

    public:
        JavascriptMapIterator(DynamicType* type, JavascriptMap* map, JavascriptMapIteratorKind kind);

        class EntryInfo
        {
        public:
            static FunctionInfo Next;
        };

        static Var EntryNext(RecyclableObject* function, CallInfo callInfo, ...);

    public:
        JavascriptMap* GetMapForHeapEnum() { return m_map; }
    };

    template <> inline bool VarIsImpl<JavascriptMapIterator>(RecyclableObject* obj)
    {
        return JavascriptOperators::GetTypeId(obj) == TypeIds_MapIterator;
    }
} // namespace Js