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58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*
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* Copyright © 2024 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef UTIL_RANGE_H
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#define UTIL_RANGE_H
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#include <stdbool.h>
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struct range {
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int lower; /* inclusive */
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int upper; /* exclusive */
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};
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static inline struct range
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range_init_empty(void) {
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return (struct range){ .lower = 0, .upper = -1 };
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}
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static inline struct range
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range_init_inclusive(int lower, int upper) {
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return (struct range) { .lower = lower, .upper = upper + 1};
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}
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static inline struct range
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range_init_exclusive(int lower, int upper) {
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return (struct range){ .lower = lower, .upper = upper };
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}
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static inline bool
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range_is_valid(const struct range *r)
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{
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return r->upper > r->lower;
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}
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#define range_for_each(range_, r_) \
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for (r_ = (range_)->lower; r < (range_)->upper; r++)
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#endif
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