neatvnc/inc/vec.h

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2019-08-25 16:40:59 +00:00
#pragma once
#include <stddef.h>
struct vec {
void* data;
size_t len;
size_t cap;
};
static inline void vec_clear(struct vec* vec)
{
vec->len = 0;
}
int vec_init(struct vec* vec, size_t cap);
void vec_destroy(struct vec* vec);
int vec_reserve(struct vec* vec, size_t size);
void vec_bzero(struct vec* vec);
int vec_assign(struct vec* vec, const void* data, size_t size);
int vec_append(struct vec* vec, const void* data, size_t size);
void* vec_append_zero(struct vec* vec, size_t size);
#define vec_for(elem, vec) \
for (elem = (vec)->data; \
((ptrdiff_t)elem - (ptrdiff_t)(vec)->data) < (ptrdiff_t)(vec)->len; \
++elem)
#define vec_for_tail(elem, vec) \
for (elem = (vec)->data, ++elem; \
((ptrdiff_t)elem - (ptrdiff_t)(vec)->data) < (ptrdiff_t)(vec)->len; \
++elem)
#define vec_for_ptr(elem, vec) \
__typeof__(elem)* ptr_; \
vec_for(ptr_, vec) \
if ((elem = *ptr_))