Merge branch 'sv/objfixes'
[git/git.git] / object.h
... / ...
CommitLineData
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 unsigned mode;
21 } *objects;
22};
23
24#define TYPE_BITS 3
25#define FLAG_BITS 27
26
27/*
28 * The object type is stored in 3 bits.
29 */
30struct object {
31 unsigned parsed : 1;
32 unsigned used : 1;
33 unsigned type : TYPE_BITS;
34 unsigned flags : FLAG_BITS;
35 unsigned char sha1[20];
36};
37
38extern int track_object_refs;
39
40extern const char *typename(unsigned int type);
41extern int type_from_string(const char *str);
42
43extern unsigned int get_max_object_index(void);
44extern struct object *get_indexed_object(unsigned int);
45extern struct object_refs *lookup_object_refs(struct object *);
46
47/** Internal only **/
48struct object *lookup_object(const unsigned char *sha1);
49
50extern void *create_object(const unsigned char *sha1, int type, void *obj);
51
52/** Returns the object, having parsed it to find out what it is. **/
53struct object *parse_object(const unsigned char *sha1);
54
55/* Given the result of read_sha1_file(), returns the object after
56 * parsing it. eaten_p indicates if the object has a borrowed copy
57 * of buffer and the caller should not free() it.
58 */
59struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p);
60
61/** Returns the object, with potentially excess memory allocated. **/
62struct object *lookup_unknown_object(const unsigned char *sha1);
63
64struct object_refs *alloc_object_refs(unsigned count);
65void set_object_refs(struct object *obj, struct object_refs *refs);
66
67void mark_reachable(struct object *obj, unsigned int mask);
68
69struct object_list *object_list_insert(struct object *item,
70 struct object_list **list_p);
71
72void object_list_append(struct object *item,
73 struct object_list **list_p);
74
75unsigned object_list_length(struct object_list *list);
76
77int object_list_contains(struct object_list *list, struct object *obj);
78
79/* Object array handling .. */
80void add_object_array(struct object *obj, const char *name, struct object_array *array);
81void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode);
82
83#endif /* OBJECT_H */