1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
#include <stdio.h>
#include <string.h>
#include "vec.h"
Vec *_Vec_new(Arena *a, int size, ptrdiff_t cap, int align) {
Vec *v = new (a, Vec, 1);
v->data = alloc(a, cap, size, align);
v->size = size;
v->align = align;
v->cap = cap;
v->len = 0;
return v;
}
Vec *Vec_push(Arena *a, Vec *v, void *data) {
// printf("push: dest=%p, src=%p, size=%d\n", v->data + v->len * v->size,
// data,
// v->size);
if (v->len == v->cap) {
void *cpy = alloc(a, v->cap * 2, v->size, v->align);
memcpy(cpy, v->data, v->len * v->size);
v->cap *= 2;
}
memcpy(v->data + v->len * v->size, data, v->size);
v->len++;
return v;
}
void *_Vec_get(Vec *v, int pos) {
// printf("get: length=%lu, cap=%lu, pos=%d\n", v->len, v->cap, pos);
// printf("get: start=%p, asked=%p\n", v->data, v->data + v->size * pos);
return v->data + v->size * pos;
}
|
