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62
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1 /* |
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2 * array.h -- manipulate dynamic pointer arrays |
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3 * |
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4 * Copyright (c) 2011, David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #ifndef _PARRAY_H_ |
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20 #define _PARRAY_H_ |
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21 |
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22 /* Add some nonnull attributes for gcc/clang */ |
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23 #ifdef __GNUC__ |
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24 # define __at_malloc __attribute__ ((malloc)) |
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25 # define __at_nonnull(...) __attribute__ ((nonnull (__VA_ARGS__))) |
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26 #else |
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27 # define __at_malloc |
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28 # define __at_nonnull(...) |
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29 #endif |
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30 |
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31 #define PARRAY_DEFAULT_BSIZE 128 |
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32 |
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33 enum parray_type { |
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34 PARRAY_FIXED = 0, |
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35 PARRAY_AUTO = 1 |
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36 }; |
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37 |
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38 struct parray { |
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39 enum parray_type type; /* array type (default FIXED) */ |
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40 void **datas; /* array of data */ |
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41 int length; /* number of element inside */ |
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42 size_t size; /* current buffer size (allocated memory) */ |
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43 int bsize; /* block size (used when growing array) */ |
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44 int i; /* only for PARRAY_FOREACH(_R) */ |
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45 }; |
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46 |
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47 typedef void (*parray_map_fn)(void *, void *); |
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48 typedef int (*parray_cmp_fn)(void *, void *); |
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49 |
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50 struct parray *parray_new(enum parray_type, int) __at_malloc; |
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51 int parray_push(struct parray *, void *) __at_nonnull(1); |
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52 int parray_insert(struct parray *, void *, int) __at_nonnull(1); |
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53 int parray_append(struct parray *, void *) __at_nonnull(1); |
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54 void parray_pop(struct parray *) __at_nonnull(1); |
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55 void parray_unqueue(struct parray *) __at_nonnull(1); |
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56 void parray_remove(struct parray *, int) __at_nonnull(1); |
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57 void parray_unref(struct parray *, const void *) __at_nonnull(1); |
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58 int parray_iswap(struct parray *, int, int) __at_nonnull(1); |
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59 int parray_pswap(struct parray *, const void *, const void *) __at_nonnull(1); |
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60 void parray_map(const struct parray *, parray_map_fn, void *) __at_nonnull(1, 2); |
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61 void *parray_find(const struct parray *, parray_cmp_fn, int *, void *) __at_nonnull(1, 2); |
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62 void parray_clear(struct parray *) __at_nonnull(1); |
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63 void parray_free(struct parray *) __at_nonnull(1); |
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64 |
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65 #define PARRAY_HEAD(a) \ |
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66 (a->datas[0]) |
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67 #define PARRAY_TAIL(a) \ |
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68 (a->datas[(a->length == 0) ? 0 : a->length - 1]) |
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69 #define PARRAY_INDEX(a, i) \ |
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70 (((i) < 0 || (a)->length == 0) ? (PARRAY_HEAD((a))) /* < 0 head */ \ |
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71 : ((i) >= (a)->length) ? (PARRAY_TAIL((a))) /* > l tail */ \ |
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72 : ((a)->datas[i])) /* correct */ |
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73 |
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74 #define PARRAY_FOREACH_R(a, var) \ |
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75 for ((a)->i = 0, var = PARRAY_TAIL((a)); \ |
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76 (a)->i < (a)->length; ++(a)->i, var = PARRAY_INDEX((a), (a)->i)) |
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77 |
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78 #define PARRAY_FOREACH(a, var) \ |
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79 for ((a)->i = 0, var = PARRAY_INDEX((a), (a)->i); \ |
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80 (a)->i < (a)->length; ++(a)->i, var = PARRAY_INDEX((a), (a)->i)) |
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81 |
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82 #define PARRAY_FLUSH(a) \ |
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83 do { \ |
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84 void *i; \ |
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85 \ |
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86 PARRAY_FOREACH_R(a, i) { \ |
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87 free(i); \ |
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88 parray_unqueue((a)); \ |
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89 } \ |
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90 \ |
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91 (a)->length = 0; \ |
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92 } while (/* CONSTCOND */ 0); |
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93 |
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94 #endif /* _PARRAY_H_ */ |
