#include <stdlib.h>
#include <merror.h>

#include "tab.h"

#define REFTAB_INIT_LEN 8

int reftab_init(struct reference_table *reftab)
{
	reftab->size = REFTAB_INIT_LEN;
	reftab->len = 0;
	reftab->references = malloc(sizeof(struct reference)
			     * REFTAB_INIT_LEN);

	if (reftab->references == NULL) {
		PERROR("cannot alloc");
		return M_ERROR;
	}

	return M_SUCCESS;
}

void reftab_free(struct reference_table *reftab)
{
	free(reftab->references);
}

int reftab_push(struct reference_table *reftab, struct reference *ref)
{
	if (reftab->len >= reftab->size) {
		reftab->size *= 2;
		reftab->references = realloc(reftab->references,
			       sizeof(struct reference) * reftab->size);

		if (reftab->references == NULL) {
			PERROR("cannot realloc");
			return M_ERROR;
		}
	}

	reftab->references[reftab->len++] = *ref;
	return M_SUCCESS;
}