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/*
* Copyright (c) 2019 Andri Yngvason
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <assert.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);
static inline void vec_fast_append_8(struct vec* vec, uint8_t value)
{
assert(vec->len < vec->cap);
((uint8_t*)vec->data)[vec->len++] = value;
}
static inline void vec_fast_append_32(struct vec* vec, uint32_t value)
{
assert(vec->len + sizeof(value) <= vec->cap);
assert(vec->len % sizeof(value) == 0);
uint32_t* p = (uint32_t*)((uint8_t*)vec->data + vec->len);
*p = value;
vec->len += sizeof(value);
}
#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_))
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