Andrew's git - gitweb.git/blob

   1#ifndef OBJECT_H
   2#define OBJECT_H
   3
   4struct object_list {
   5        struct object *item;
   6        struct object_list *next;
   7};
   8
   9struct object_refs {
  10        unsigned count;
  11        struct object *base;
  12        struct object *ref[FLEX_ARRAY]; /* more */
  13};
  14
  15struct object_array {
  16        unsigned int nr;
  17        unsigned int alloc;
  18        struct object_array_entry {
  19                struct object *item;
  20                const char *name;
  21        } *objects;
  22};
  23
  24#define TYPE_BITS   3
  25#define FLAG_BITS  27
  26
  27#define TYPE_NONE   0
  28#define TYPE_BLOB   1
  29#define TYPE_TREE   2
  30#define TYPE_COMMIT 3
  31#define TYPE_TAG    4
  32#define TYPE_BAD    5
  33
  34struct object {
  35        unsigned parsed : 1;
  36        unsigned used : 1;
  37        unsigned type : TYPE_BITS;
  38        unsigned flags : FLAG_BITS;
  39        unsigned char sha1[20];
  40};
  41
  42extern int track_object_refs;
  43extern const char *type_names[];
  44
  45extern unsigned int get_max_object_index(void);
  46extern struct object *get_indexed_object(unsigned int);
  47
  48static inline const char *typename(unsigned int type)
  49{
  50        return type_names[type > TYPE_TAG ? TYPE_BAD : type];
  51}
  52
  53extern struct object_refs *lookup_object_refs(struct object *);
  54
  55/** Internal only **/
  56struct object *lookup_object(const unsigned char *sha1);
  57
  58/** Returns the object, having looked it up as being the given type. **/
  59struct object *lookup_object_type(const unsigned char *sha1, const char *type);
  60
  61void created_object(const unsigned char *sha1, struct object *obj);
  62
  63/** Returns the object, having parsed it to find out what it is. **/
  64struct object *parse_object(const unsigned char *sha1);
  65
  66/** Returns the object, with potentially excess memory allocated. **/
  67struct object *lookup_unknown_object(const unsigned  char *sha1);
  68
  69struct object_refs *alloc_object_refs(unsigned count);
  70void set_object_refs(struct object *obj, struct object_refs *refs);
  71
  72void mark_reachable(struct object *obj, unsigned int mask);
  73
  74struct object_list *object_list_insert(struct object *item, 
  75                                       struct object_list **list_p);
  76
  77void object_list_append(struct object *item,
  78                        struct object_list **list_p);
  79
  80unsigned object_list_length(struct object_list *list);
  81
  82int object_list_contains(struct object_list *list, struct object *obj);
  83
  84/* Object array handling .. */
  85void add_object_array(struct object *obj, const char *name, struct object_array *array);
  86
  87#endif /* OBJECT_H */