src/strmap.h

   1 /*
   2  * Copyright (C) 2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_strmap_h__
   8 #define INCLUDE_strmap_h__
   9
  10 #include "common.h"
  11
  12 #define kmalloc git__malloc
  13 #define kcalloc git__calloc
  14 #define krealloc git__realloc
  15 #define kfree git__free
  16 #include "khash.h"
  17
  18 __KHASH_TYPE(str, const char *, void *);
  19 typedef khash_t(str) git_strmap;
  20
  21 #define GIT__USE_STRMAP \
  22         __KHASH_IMPL(str, static kh_inline, const char *, void *, 1, kh_str_hash_func, kh_str_hash_equal)
  23
  24 #define git_strmap_alloc()  kh_init(str)
  25 #define git_strmap_free(h)  kh_destroy(str, h), h = NULL
  26 #define git_strmap_clear(h) kh_clear(str, h)
  27
  28 #define git_strmap_num_entries(h) kh_size(h)
  29
  30 #define git_strmap_lookup_index(h, k)  kh_get(str, h, k)
  31 #define git_strmap_valid_index(h, idx) (idx != kh_end(h))
  32
  33 #define git_strmap_exists(h, k) (kh_get(str, h, k) != kh_end(h))
  34
  35 #define git_strmap_value_at(h, idx)        kh_val(h, idx)
  36 #define git_strmap_set_value_at(h, idx, v) kh_val(h, idx) = v
  37 #define git_strmap_delete_at(h, idx)       kh_del(str, h, idx)
  38
  39 #define git_strmap_insert(h, key, val, rval) do { \
  40         khiter_t __pos = kh_put(str, h, key, &rval); \
  41         if (rval >= 0) { \
  42                 if (rval == 0) kh_key(h, __pos) = key; \
  43                 kh_val(h, __pos) = val; \
  44         } } while (0)
  45
  46 #define git_strmap_insert2(h, key, val, oldv, rval) do { \
  47         khiter_t __pos = kh_put(str, h, key, &rval); \
  48         if (rval >= 0) { \
  49                 if (rval == 0) { \
  50                         oldv = kh_val(h, __pos); \
  51                         kh_key(h, __pos) = key; \
  52                 } else { oldv = NULL; } \
  53                 kh_val(h, __pos) = val; \
  54         } } while (0)
  55
  56 #define git_strmap_delete(h, key) do { \
  57         khiter_t __pos = git_strmap_lookup_index(h, key); \
  58         if (git_strmap_valid_index(h, __pos)) \
  59                 git_strmap_delete_at(h, __pos); } while (0)
  60
  61 #define git_strmap_foreach              kh_foreach
  62 #define git_strmap_foreach_value        kh_foreach_value
  63
  64 #endif