/*
 * Copyright (c) Camden Dixie O'Brien
 * SPDX-License-Identifier: AGPL-3.0-only
 */

#include "regex.h"

#include <stdlib.h>

static void sequence_free(const regex_sequence_t *s)
{
	if (NULL != s->contents) {
		for (int i = 0; i < s->count; ++i) {
			switch (s->contents[i].type) {
			case REGEX_TERM_CLASS:
				regex_class_free(&s->contents[i].class);
				break;
			case REGEX_TERM_SUBEXPR:
				regex_free(&s->contents[i].subexpr);
				break;
			default:
				break;
			}
		}
		free(s->contents);
	}
}

void regex_free(const regex_t *t)
{
	if (NULL != t->contents) {
		for (int i = 0; i < t->count; ++i)
			sequence_free(&t->contents[i]);
		free(t->contents);
	}
}

void regex_class_free(const regex_class_t *c)
{
	if (NULL != c->contents)
		free(c->contents);
}