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#include "vector.h"
static inline bool
vector_grow(struct vector *vec)
{
vec->cap *= 2;
vec->values = realloc(vec->values, sizeof(vec->values) * vec->cap);
return vec->values != NULL;
}
struct vector *
vector_new_with_cap(size_t cap)
{
struct vector *vec = malloc(sizeof(*vec));
if (!vec) return NULL;
vec->values = malloc(sizeof(vec->values) * cap);
if (!vec->values) {
free(vec);
return NULL;
}
vec->cap = cap;
vec->len = 0;
return vec;
}
ssize_t
vector_push(struct vector *vec, void *val)
{
if (vec->len >= vec->cap && !vector_grow(vec)) return -1;
vec->values[vec->len] = val;
vec->len++;
return vec->len - 1;
}
void *
vector_pop(struct vector *vec)
{
if (vec->len == 0) return NULL;
return vec->values[--vec->len];
}
void
vector_free(struct vector *vec)
{
free(vec->values);
free(vec);
}
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