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/*
* Copyright (C) 2023 Johnny Richard
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "vector.h"
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
vector_t *
vector_new(void)
{
vector_t *vector = (vector_t *)malloc(sizeof(vector_t));
if (vector == NULL) {
fprintf(stderr, "failed to create vector: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
vector->items = calloc(sizeof(void *), VECTOR_INITIAL_CAPACITY);
if (vector->items == NULL) {
free(vector);
fprintf(stderr, "failed to create vector items: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
vector->size = 0;
vector->capacity = VECTOR_INITIAL_CAPACITY;
return vector;
}
static void
vector_resize(vector_t *vector)
{
vector->capacity = vector->capacity * 2;
vector->items = realloc(vector->items, sizeof(void *) * vector->capacity);
if (vector->items == NULL) {
vector_destroy(vector);
fprintf(stderr, "failed to reallocat memory for vector: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
}
void
vector_push_back(vector_t *vector, void *item)
{
assert(vector);
assert(item);
if (vector->size == vector->capacity) {
vector_resize(vector);
}
vector->items[vector->size++] = item;
}
void *
vector_at(vector_t *vector, uint32_t index)
{
assert(vector);
return vector->items[index];
}
void
vector_destroy(vector_t *vector)
{
assert(vector);
free(vector->items);
free(vector);
}
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