Mapping_Array.h

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/*
 * Copyright(c) Sophist Solutions, Inc. 1990-2026.  All rights reserved
 */
#ifndef _Stroika_Foundation_Containers_Concrete_Mapping_Array_h_
#define _Stroika_Foundation_Containers_Concrete_Mapping_Array_h_
 
#include "Stroika/Foundation/StroikaPreComp.h"
 
#include "Stroika/Foundation/Containers/Mapping.h"
#include "Stroika/Foundation/Containers/Private/ArraySupport.h"
 
/**
 *  \file
 *
 *  \note Code-Status:  <a href="Code-Status.md#Beta">Beta</a>
 */
 
namespace Stroika::Foundation::Containers::Concrete {
 
    /**
     *  \brief   Mapping_Array<KEY_TYPE, MAPPED_VALUE_TYPE, TRAITS> is an Array-based concrete implementation of the Mapping<KEY_TYPE, MAPPED_VALUE_TYPE, typename TRAITS::MappingTraitsType> container pattern.
     *
     * \note Runtime performance/complexity:
     *      o   Add/Lookup () are O(N)
     *      o   Suitable for small (apx < 10) sized containers
     *
     *  \note   \em Thread-Safety   <a href="Thread-Safety.md#C++-Standard-Thread-Safety">C++-Standard-Thread-Safety</a>
     */
    template <typename KEY_TYPE, typename MAPPED_VALUE_TYPE>
    class Mapping_Array
        : public Private::ArrayBasedContainer<Mapping_Array<KEY_TYPE, MAPPED_VALUE_TYPE>, Mapping<KEY_TYPE, MAPPED_VALUE_TYPE>, true> {
    private:
        using inherited = Private::ArrayBasedContainer<Mapping_Array<KEY_TYPE, MAPPED_VALUE_TYPE>, Mapping<KEY_TYPE, MAPPED_VALUE_TYPE>, true>;
 
    public:
        using KeyEqualsCompareFunctionType = typename inherited::KeyEqualsCompareFunctionType;
        using value_type                   = typename inherited::value_type;
        using mapped_type                  = typename inherited::mapped_type;
 
    public:
        /**
         *  \see docs on Mapping<> constructor
         */
        Mapping_Array ();
        template <IEqualsComparer<KEY_TYPE> KEY_EQUALS_COMPARER>
        explicit Mapping_Array (KEY_EQUALS_COMPARER&& keyEqualsComparer);
        Mapping_Array (Mapping_Array&&) noexcept      = default;
        Mapping_Array (const Mapping_Array&) noexcept = default;
        Mapping_Array (const initializer_list<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>>& src);
        template <IEqualsComparer<KEY_TYPE> KEY_EQUALS_COMPARER>
        Mapping_Array (KEY_EQUALS_COMPARER&& keyEqualsComparer, const initializer_list<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>>& src);
        template <IIterableOfTo<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>> ITERABLE_OF_ADDABLE>
            requires (not derived_from<remove_cvref_t<ITERABLE_OF_ADDABLE>, Mapping_Array<KEY_TYPE, MAPPED_VALUE_TYPE>>)
        explicit Mapping_Array (ITERABLE_OF_ADDABLE&& src)
#if qCompilerAndStdLib_RequiresNotMatchInlineOutOfLineForTemplateClassBeingDefined_Buggy
            : Mapping_Array{}
        {
            if constexpr (Common::IHasSizeMethod<ITERABLE_OF_ADDABLE>) {
                this->reserve (src.size ());
            }
            this->AddAll (forward<ITERABLE_OF_ADDABLE> (src));
            AssertRepValidType_ ();
        }
#endif
        ;
        template <IEqualsComparer<KEY_TYPE> KEY_EQUALS_COMPARER, IIterableOfTo<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>> ITERABLE_OF_ADDABLE>
        Mapping_Array (KEY_EQUALS_COMPARER&& keyEqualsComparer, ITERABLE_OF_ADDABLE&& src);
        template <IInputIterator<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>> ITERATOR_OF_ADDABLE>
        Mapping_Array (ITERATOR_OF_ADDABLE&& start, ITERATOR_OF_ADDABLE&& end);
        template <IEqualsComparer<KEY_TYPE> KEY_EQUALS_COMPARER, IInputIterator<KeyValuePair<KEY_TYPE, MAPPED_VALUE_TYPE>> ITERATOR_OF_ADDABLE>
        Mapping_Array (KEY_EQUALS_COMPARER&& keyEqualsComparer, ITERATOR_OF_ADDABLE&& start, ITERATOR_OF_ADDABLE&& end);
 
    public:
        nonvirtual Mapping_Array& operator= (Mapping_Array&&) noexcept = default;
        nonvirtual Mapping_Array& operator= (const Mapping_Array&)     = default;
 
    private:
        using IImplRepBase_ = Containers::Private::ArrayBasedContainerIRep<typename Mapping<KEY_TYPE, MAPPED_VALUE_TYPE>::_IRep>;
        template <qCompilerAndStdLib_ConstraintDiffersInTemplateRedeclaration_BWA (IEqualsComparer<KEY_TYPE>) KEY_EQUALS_COMPARER>
        class Rep_;
 
    private:
        nonvirtual void AssertRepValidType_ () const;
 
    private:
        friend inherited;
    };
 
}
 
/*
 ********************************************************************************
 ******************************* Implementation Details *************************
 ********************************************************************************
 */
 
#include "Mapping_Array.inl"
 
#endif /*_Stroika_Foundation_Containers_Concrete_Mapping_Array_h_ */