project64/Source/Project64/UserInterface/WTLControls/ClistCtrl/DataArray.h

#pragma once

#include <atldef.h>

#ifdef malloc
#pragma push_macro("malloc")
#undef malloc
#define pop_malloc
#endif

#ifdef realloc
#pragma push_macro("realloc")
#undef realloc
#define pop_realloc
#endif

#ifdef free
#pragma push_macro("free")
#undef free
#define pop_free
#endif

#ifdef new
#pragma push_macro("new")
#undef new
#define pop_new
#endif

// Template class helpers with functions for comparing elements
// Override if using complex types without operator==

template <class T>
class CListCtrlArrayEqualHelper
{
public:
    static bool IsEqual(const T & t1, const T & t2)
    {
        return (t1 == t2);
    }
};

template <class T, class TEqual = CListCtrlArrayEqualHelper<T>>
class CListCtrlArray
{
public:
    // Construction / destruction
    CListCtrlArray() :
        m_aT(nullptr), m_nSize(0), m_nAllocSize(0)
    {
    }

    ~CListCtrlArray()
    {
        RemoveAll();
    }

    CListCtrlArray(const CListCtrlArray<T, TEqual> & src) :
        m_aT(nullptr), m_nSize(0), m_nAllocSize(0)
    {
        m_aT = (T *)malloc(src.GetSize() * sizeof(T));
        if (m_aT != nullptr)
        {
            m_nAllocSize = src.GetSize();
            for (int i = 0; i < src.GetSize(); i++)
                Add(src[i]);
        }
    }
    CListCtrlArray<T, TEqual> & operator=(const CListCtrlArray<T, TEqual> & src)
    {
        if (GetSize() != src.GetSize())
        {
            RemoveAll();
            m_aT = (T *)malloc(src.GetSize() * sizeof(T));
            if (m_aT != nullptr)
                m_nAllocSize = src.GetSize();
        }
        else
        {
            for (int i = GetSize(); i > 0; i--)
                RemoveAt(i - 1);
        }
        for (int i = 0; i < src.GetSize(); i++)
            Add(src[i]);
        return *this;
    }

    // Operations
    int GetSize() const
    {
        return m_nSize;
    }
    BOOL Add(const T & t)
    {
        if (m_nSize == m_nAllocSize)
        {
            T * aT;
            int nNewAllocSize = (m_nAllocSize == 0) ? 1 : (m_nSize * 2);
            aT = (T *)realloc(m_aT, nNewAllocSize * sizeof(T));
            if (aT == nullptr)
                return FALSE;
            m_nAllocSize = nNewAllocSize;
            m_aT = aT;
        }
        InternalSetAtIndex(m_nSize, t);
        m_nSize++;
        return TRUE;
    }
    BOOL AddAt(const T & t, int index)
    {
        if (m_nSize == m_nAllocSize)
        {
            T * aT;
            int nNewAllocSize = (m_nAllocSize == 0) ? 1 : (m_nSize * 2);
            aT = (T *)realloc(m_aT, nNewAllocSize * sizeof(T));
            if (aT == nullptr)
                return FALSE;
            m_nAllocSize = nNewAllocSize;
            m_aT = aT;
        }
        int NewItem = (m_nSize - index);
        if (NewItem > 0)
        {
            memmove(&m_aT[index + 1], &m_aT[index], NewItem * sizeof(T));
        }
        InternalSetAtIndex(index, t);
        m_nSize++;
        return TRUE;
    }
    BOOL Remove(const T & t)
    {
        int nIndex = Find(t);
        if (nIndex == -1)
            return FALSE;
        return RemoveAt(nIndex);
    }
    BOOL RemoveAt(int nIndex)
    {
        ATLASSERT(nIndex >= 0 && nIndex < m_nSize);
        if (nIndex < 0 || nIndex >= m_nSize)
            return FALSE;
        m_aT[nIndex].~T();
        if (nIndex != (m_nSize - 1))
            memmove((void *)(m_aT + nIndex), (void *)(m_aT + nIndex + 1), (m_nSize - (nIndex + 1)) * sizeof(T));
        m_nSize--;
        return TRUE;
    }
    void RemoveAll()
    {
        if (m_aT != nullptr)
        {
            for (int i = 0; i < m_nSize; i++)
                m_aT[i].~T();
            free(m_aT);
            m_aT = nullptr;
        }
        m_nSize = 0;
        m_nAllocSize = 0;
    }
    const T & operator[](int nIndex) const
    {
        ATLASSERT(nIndex >= 0 && nIndex < m_nSize);
        if (nIndex < 0 || nIndex >= m_nSize)
        {
            RaiseException(EXCEPTION_ARRAY_BOUNDS_EXCEEDED, EXCEPTION_NONCONTINUABLE, 0, nullptr);
        }
        return m_aT[nIndex];
    }
    T & operator[](int nIndex)
    {
        ATLASSERT(nIndex >= 0 && nIndex < m_nSize);
        if (nIndex < 0 || nIndex >= m_nSize)
        {
            RaiseException(EXCEPTION_ARRAY_BOUNDS_EXCEEDED, EXCEPTION_NONCONTINUABLE, 0, nullptr);
        }
        return m_aT[nIndex];
    }
    T * GetData() const
    {
        return m_aT;
    }

    int Find(const T & t) const
    {
        for (int i = 0; i < m_nSize; i++)
        {
            if (TEqual::IsEqual(m_aT[i], t))
                return i;
        }
        return -1; // Not found
    }

    BOOL SetAtIndex(int nIndex, const T & t)
    {
        if (nIndex < 0 || nIndex >= m_nSize)
            return FALSE;
        InternalSetAtIndex(nIndex, t);
        return TRUE;
    }

    // Implementation
    class Wrapper
    {
    public:
        Wrapper(const T & _t) :
            t(_t)
        {
        }
        template <class _Ty>
        void * __cdecl operator new(size_t, _Ty * p)
        {
            return p;
        }
        template <class _Ty>
        void __cdecl operator delete(void * /* pv */, _Ty * /* p */)
        {
        }
        T t;
    };

    // Implementation
    void InternalSetAtIndex(int nIndex, const T & t)
    {
        new (m_aT + nIndex) Wrapper(t);
    }

    typedef T _ArrayElementType;
    T * m_aT;
    int m_nSize;
    int m_nAllocSize;
};

#ifdef pop_new
#pragma pop_macro("new")
#endif

#ifdef pop_free
#pragma pop_macro("free")
#endif

#ifdef pop_realloc
#pragma pop_macro("realloc")
#endif

#ifdef pop_malloc
#pragma pop_macro("malloc")
#endif