thodg/libgit2/src/offmap.h

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• Hash : 5bfb3b58
  Author :
  Date : 2018-11-23T18:48:40
  

  khash: implement map-specific foreach macros
  
  The current foreach map macros simply redirect to the type-indifferent
  `kh_foreach` macro. As this type-indifferent macro directly accesses the
  structures, the current implementation makes it impossible to make the
  stuctures private to the implementation only. And making them private is
  required to move out the khash include into the implementations to
  decrease the namespace leak.
  

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• src/offmap.h

• /*
   * Copyright (C) 2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_offmap_h__
  #define INCLUDE_offmap_h__
  
  #include "common.h"
  
  #include "git2/types.h"
  
  #define kmalloc git__malloc
  #define kcalloc git__calloc
  #define krealloc git__realloc
  #define kreallocarray git__reallocarray
  #define kfree git__free
  #include "khash.h"
  
  __KHASH_TYPE(off, git_off_t, void *)
  typedef khash_t(off) git_offmap;
  
  git_offmap *git_offmap_alloc(void);
  void git_offmap_free(git_offmap *map);
  void git_offmap_clear(git_offmap *map);
  
  size_t git_offmap_num_entries(git_offmap *map);
  
  size_t git_offmap_lookup_index(git_offmap *map, const git_off_t key);
  int git_offmap_valid_index(git_offmap *map, size_t idx);
  
  int git_offmap_exists(git_offmap *map, const git_off_t key);
  int git_offmap_has_data(git_offmap *map, size_t idx);
  
  git_off_t git_offmap_key_at(git_offmap *map, size_t idx);
  void *git_offmap_value_at(git_offmap *map, size_t idx);
  void git_offmap_set_value_at(git_offmap *map, size_t idx, void *value);
  void git_offmap_delete_at(git_offmap *map, size_t idx);
  
  int git_offmap_put(git_offmap *map, const git_off_t key, int *err);
  void git_offmap_insert(git_offmap *map, const git_off_t key, void *value, int *rval);
  void git_offmap_delete(git_offmap *map, const git_off_t key);
  
  size_t git_offmap_begin(git_offmap *map);
  size_t git_offmap_end(git_offmap *map);
  
  #define git_offmap_foreach(h, kvar, vvar, code) { size_t __i;			\
  	for (__i = git_offmap_begin(h); __i != git_offmap_end(h); ++__i) {	\
  		if (!git_offmap_has_data(h,__i)) continue;			\
  		(kvar) = git_offmap_key_at(h,__i);				\
  		(vvar) = git_offmap_value_at(h,__i);				\
  		code;								\
  	} }
  
  #define git_offmap_foreach_value(h, vvar, code) { size_t __i;			\
  	for (__i = git_offmap_begin(h); __i != git_offmap_end(h); ++__i) {	\
  		if (!git_offmap_has_data(h,__i)) continue;			\
  		(vvar) = git_offmap_value_at(h,__i);				\
  		code;								\
  	} }
  
  #endif
  

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