new typesafe dynamic array h

#ifndef DYNAMIC_ARRAY_H
#define DYNAMIC_ARRAY_H

#ifndef DYNAMIC_ARRAY_MALLOC
#include <stdlib.h>
#define DYNAMIC_ARRAY_MALLOC malloc
#endif

#ifndef DYNAMIC_ARRAY_REALLOC
#include <stdlib.h>
#define DYNAMIC_ARRAY_REALLOC realloc
#endif

#ifndef DYNAMIC_ARRAY_MEMMOVE
#include <string.h>
#define DYNAMIC_ARRAY_MEMMOVE memmove
#endif

#ifndef DYNAMIC_ARRAY_SIZE_TYPE
#define DYNAMIC_ARRAY_SIZE_TYPE int
#endif

#define DynamicArray(T) {\
    T *elements;\
    DYNAMIC_ARRAY_SIZE_TYPE count;\
    DYNAMIC_ARRAY_SIZE_TYPE capacity;\
}

#define DynamicArrayElementSize(ARRAY) (sizeof *((ARRAY)->elements))

#define DynamicArrayInit(ARRAY) do {\
    (ARRAY)->elements = 0;\
    (ARRAY)->count = 0;\
    (ARRAY)->capacity = 0;\
} while (0)

#define DynamicArrayReserve(ARRAY, COUNT_ELEMENTS) do {\
    (ARRAY)->capacity = COUNT_ELEMENTS;\
    (ARRAY)->elements = DYNAMIC_ARRAY_MALLOC(COUNT_ELEMENTS * DynamicArrayElementSize(ARRAY)); \
} while (0)

#define DynamicArrayResize(ARRAY, COUNT_RESERVATIONS) do {\
    (ARRAY)->capacity = COUNT_RESERVATIONS;\
    (ARRAY)->elements = DYNAMIC_ARRAY_REALLOC((ARRAY)->elements, COUNT_RESERVATIONS * DynamicArrayElementSize(ARRAY)); \
} while (0)

#define DynamicArrayMaybeExpand(ARRAY) do {\
    if ((ARRAY)->count + 1 > (ARRAY)->capacity) {\
        (ARRAY)->capacity *= 2;\
        DynamicArrayResize(ARRAY, (ARRAY)->capacity);\
    }\
} while (0)

#define DynamicArrayPushBack(ARRAY, VALUE) do {\
    DynamicArrayMaybeExpand(ARRAY);\
\
    (ARRAY)->elements[(ARRAY)->count++] = (VALUE);\
} while (0)

#define DynamicArrayPopBack(ARRAY) (ARRAY)->count--

#define DynamicArrayInsert(ARRAY, INDEX, VALUE) do {\
    DynamicArrayMaybeExpand(ARRAY);\
\
    memmove(\
        &((ARRAY)->elements[INDEX + 1]),\
        &((ARRAY)->elements[INDEX]),\
        ((ARRAY)->count - INDEX) * DynamicArrayElementSize(ARRAY)\
    );\
    (ARRAY)->count += 1;\
    (ARRAY)->elements[INDEX] = VALUE;\
} while (0)

#define DynamicArrayShrinkToFit(ARRAY) do {\
    DynamicArrayResize(ARRAY, (ARRAY)->count);\
} while (0)

#endif /* DYNAMIC_ARRAY_H */