/*
 * Libitree: an interval tree library in C
 *
 * Copyright (C) 2018 Alessandro Vullo
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _INTERVAL_H_
#define _INTERVAL_H_

#ifdef __cplusplus
extern "C"
{
#endif

#include <stddef.h>
#include <stdint.h>

/* User-defined item handling */
typedef void *(*dup_f)(void *p);
typedef void (*rel_f)(void *p);

typedef struct interval
{
  uint64_t low, high; /* Interval boundaries, inclusive */
  void *data;      /* User-defined content */
  dup_f dup;       /* Clone an interval data item */
  rel_f rel;       /* Destroy an interval data item */
} interval_t;

/* Interval functions */
interval_t *interval_new(uint64_t low, uint64_t high, void *data, dup_f dup, rel_f rel);
interval_t *interval_copy(const interval_t *i);
void interval_delete(interval_t *i);
int interval_overlap(const interval_t *i1, const interval_t *i2);
int interval_equal(const interval_t *i1, const interval_t *i2);

#ifdef __cplusplus
}
#endif

#endif /* _INTERVAL_H_ */