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annotate array.c @ 194:879fd8f0dd53
add test that would have caught the breakage in 0.5
| author | David A. Holland |
|---|---|
| date | Fri, 12 Jun 2015 22:02:50 -0400 |
| parents | 337110e7240a |
| children |
| rev | line source |
|---|---|
| 1 | 1 /*- |
| 2 * Copyright (c) 2009 The NetBSD Foundation, Inc. | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This code is derived from software contributed to The NetBSD Foundation | |
| 6 * by David A. Holland. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |
| 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |
| 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 27 * POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #define ARRAYINLINE | |
| 34 #include "array.h" | |
| 35 | |
| 36 struct array * | |
| 37 array_create(void) | |
| 38 { | |
| 39 struct array *a; | |
| 40 | |
| 2 | 41 a = domalloc(sizeof(*a)); |
| 42 array_init(a); | |
| 1 | 43 return a; |
| 44 } | |
| 45 | |
| 46 void | |
| 47 array_destroy(struct array *a) | |
| 48 { | |
| 49 array_cleanup(a); | |
|
39
337110e7240a
Pass the size to free; it makes debug checking easier.
David A. Holland
parents:
38
diff
changeset
|
50 dofree(a, sizeof(*a)); |
| 1 | 51 } |
| 52 | |
| 53 void | |
| 54 array_init(struct array *a) | |
| 55 { | |
| 56 a->num = a->max = 0; | |
| 57 a->v = NULL; | |
| 58 } | |
| 59 | |
| 60 void | |
| 61 array_cleanup(struct array *a) | |
| 62 { | |
| 63 arrayassert(a->num == 0); | |
|
39
337110e7240a
Pass the size to free; it makes debug checking easier.
David A. Holland
parents:
38
diff
changeset
|
64 dofree(a->v, a->max * sizeof(a->v[0])); |
| 1 | 65 #ifdef ARRAYS_CHECKED |
| 66 a->v = NULL; | |
| 67 #endif | |
| 68 } | |
| 69 | |
| 2 | 70 void |
| 1 | 71 array_setsize(struct array *a, unsigned num) |
| 72 { | |
| 73 unsigned newmax; | |
| 74 void **newptr; | |
| 75 | |
| 76 if (num > a->max) { | |
| 77 newmax = a->max; | |
| 78 while (num > newmax) { | |
| 79 newmax = newmax ? newmax*2 : 4; | |
| 80 } | |
|
39
337110e7240a
Pass the size to free; it makes debug checking easier.
David A. Holland
parents:
38
diff
changeset
|
81 newptr = dorealloc(a->v, a->max * sizeof(a->v[0]), |
|
337110e7240a
Pass the size to free; it makes debug checking easier.
David A. Holland
parents:
38
diff
changeset
|
82 newmax * sizeof(a->v[0])); |
| 1 | 83 a->v = newptr; |
| 84 a->max = newmax; | |
| 85 } | |
| 86 a->num = num; | |
| 87 } | |
| 88 | |
| 2 | 89 void |
| 1 | 90 array_insert(struct array *a, unsigned index_) |
| 91 { | |
| 92 unsigned movers; | |
| 93 | |
| 94 arrayassert(a->num <= a->max); | |
| 95 arrayassert(index_ < a->num); | |
| 96 | |
| 97 movers = a->num - index_; | |
| 98 | |
| 2 | 99 array_setsize(a, a->num + 1); |
| 1 | 100 |
| 101 memmove(a->v + index_+1, a->v + index_, movers*sizeof(*a->v)); | |
| 102 } | |
| 103 | |
| 104 void | |
| 105 array_remove(struct array *a, unsigned index_) | |
| 106 { | |
| 107 unsigned movers; | |
| 108 | |
| 109 arrayassert(a->num <= a->max); | |
| 110 arrayassert(index_ < a->num); | |
| 111 | |
| 112 movers = a->num - (index_ + 1); | |
| 113 memmove(a->v + index_, a->v + index_+1, movers*sizeof(*a->v)); | |
| 114 a->num--; | |
| 115 } |