#include <stdlib.h>
#include "shape.h"

struct shape
{
    shape_area_t area;
    shape_destroy_t destroy;
};

double shape_area(struct shape *shape)
{
    return shape->area(shape);
}

void shape_destroy(struct shape *shape)
{
    shape->destroy(shape);
}

void shape_init(
    struct shape *shape,
    shape_area_t area,
    shape_destroy_t destroy)
{
    shape->area = area;
    shape->destroy = destroy;
}

int shape_sizeof()
{
    return sizeof(struct shape);
}