#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#define UNINPLEMENTED printf("%s:%d: Not yet implemented", __FILE__, __LINE__)

#define foreach(item, vector)                                             \
	for (int keep  = 1,                                                     \
	         count = 0,                                                     \
	         size  = sizeof(vector->elements) / sizeof *(vector->elements); \
	     keep && count != size;                                             \
	     keep = !keep, count++)                                             \
		for (item = (vector->elements) + (count * vector->obj_size); keep;    \
		     keep = !keep)

typedef void (*Destructor)(void *element);

struct Vector_s {
	void **    elements;
	uint32_t   obj_size;
	uint32_t   len;
	Destructor destructor;
};

typedef struct Vector_s Vector;

Vector * vec_new_with_capacity(uint32_t   obj_size,
                               uint32_t   obj_number,
                               Destructor destructor); // DONE
Vector * vec_new(uint32_t   obj_size,
                 Destructor destructor);            // DONE
uint32_t vec_len(Vector *self);                     // DONE
uint32_t vec_capacity(Vector *self);                // DONE
uint8_t  vec_push(Vector *self, void *element);     // TODO
uint8_t  vec_pop(Vector *self);                     // TODO
void *   vec_at(Vector *self, uint32_t index);      // DONE
void *   vec_at_safe(Vector *self, uint32_t index); // DONE
void     vec_delete(Vector *self);                  // DONE