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 *ref[FLEX_ARRAY]; /* more */
  12};
  13
  14struct object_array {
  15        unsigned int nr;
  16        unsigned int alloc;
  17        struct object_array_entry {
  18                struct object *item;
  19                const char *name;
  20        } *objects;
  21};
  22
  23#define TYPE_BITS   3
  24#define FLAG_BITS  27
  25
  26/*
  27 * The object type is stored in 3 bits.
  28 */
  29struct object {
  30        unsigned parsed : 1;
  31        unsigned used : 1;
  32        unsigned type : TYPE_BITS;
  33        unsigned flags : FLAG_BITS;
  34        unsigned char sha1[20];
  35};
  36
  37extern int track_object_refs;
  38
  39extern const char *typename(unsigned int type);
  40extern int type_from_string(const char *str);
  41
  42extern unsigned int get_max_object_index(void);
  43extern struct object *get_indexed_object(unsigned int);
  44extern struct object_refs *lookup_object_refs(struct object *);
  45
  46/** Internal only **/
  47struct object *lookup_object(const unsigned char *sha1);
  48
  49extern void *create_object(const unsigned char *sha1, int type, void *obj);
  50
  51/** Returns the object, having parsed it to find out what it is. **/
  52struct object *parse_object(const unsigned char *sha1);
  53
  54/* Given the result of read_sha1_file(), returns the object after
  55 * parsing it.  eaten_p indicates if the object has a borrowed copy
  56 * of buffer and the caller should not free() it.
  57 */
  58struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p);
  59
  60/** Returns the object, with potentially excess memory allocated. **/
  61struct object *lookup_unknown_object(const unsigned  char *sha1);
  62
  63struct object_refs *alloc_object_refs(unsigned count);
  64void set_object_refs(struct object *obj, struct object_refs *refs);
  65
  66void mark_reachable(struct object *obj, unsigned int mask);
  67
  68struct object_list *object_list_insert(struct object *item, 
  69                                       struct object_list **list_p);
  70
  71void object_list_append(struct object *item,
  72                        struct object_list **list_p);
  73
  74unsigned object_list_length(struct object_list *list);
  75
  76int object_list_contains(struct object_list *list, struct object *obj);
  77
  78/* Object array handling .. */
  79void add_object_array(struct object *obj, const char *name, struct object_array *array);
  80
  81#endif /* OBJECT_H */