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/*
* ngtcp2
*
* Copyright (c) 2017 ngtcp2 contributors
*
* 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 NGTCP2_RANGE_H
#define NGTCP2_RANGE_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <ngtcp2/ngtcp2.h>
/*
* ngtcp2_range represents half-closed range [begin, end).
*/
typedef struct ngtcp2_range {
uint64_t begin;
uint64_t end;
} ngtcp2_range;
/*
* ngtcp2_range_init initializes |r| with the range [|begin|, |end|).
*/
void ngtcp2_range_init(ngtcp2_range *r, uint64_t begin, uint64_t end);
/*
* ngtcp2_range_intersect returns the intersection of |a| and |b|. If
* they do not overlap, it returns empty range.
*/
ngtcp2_range ngtcp2_range_intersect(const ngtcp2_range *a,
const ngtcp2_range *b);
/*
* ngtcp2_range_len returns the length of |r|.
*/
uint64_t ngtcp2_range_len(const ngtcp2_range *r);
/*
* ngtcp2_range_eq returns nonzero if |a| equals |b|, such that
* a->begin == b->begin, and a->end == b->end hold.
*/
int ngtcp2_range_eq(const ngtcp2_range *a, const ngtcp2_range *b);
/*
* ngtcp2_range_cut returns the left and right range after removing
* |b| from |a|. This function assumes that |a| completely includes
* |b|. In other words, a->begin <= b->begin and b->end <= a->end
* hold.
*/
void ngtcp2_range_cut(ngtcp2_range *left, ngtcp2_range *right,
const ngtcp2_range *a, const ngtcp2_range *b);
/*
* ngtcp2_range_not_after returns nonzero if the right edge of |a|
* does not go beyond of the right edge of |b|.
*/
int ngtcp2_range_not_after(const ngtcp2_range *a, const ngtcp2_range *b);
#endif /* NGTCP2_RANGE_H */
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