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Commit | Line | Data |
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6eb8ae00 DB |
1 | #ifndef OBJECT_H |
2 | #define OBJECT_H | |
3 | ||
4 | struct object_list { | |
5 | struct object *item; | |
6 | struct object_list *next; | |
7 | }; | |
8 | ||
1f1e895f LT |
9 | struct object_array { |
10 | unsigned int nr; | |
11 | unsigned int alloc; | |
12 | struct object_array_entry { | |
13 | struct object *item; | |
14 | const char *name; | |
e5709a4a | 15 | unsigned mode; |
1f1e895f LT |
16 | } *objects; |
17 | }; | |
18 | ||
3cd47459 TF |
19 | #define OBJECT_ARRAY_INIT { 0, 0, NULL } |
20 | ||
885a86ab LT |
21 | #define TYPE_BITS 3 |
22 | #define FLAG_BITS 27 | |
23 | ||
1974632c LT |
24 | /* |
25 | * The object type is stored in 3 bits. | |
26 | */ | |
6eb8ae00 DB |
27 | struct object { |
28 | unsigned parsed : 1; | |
29 | unsigned used : 1; | |
885a86ab LT |
30 | unsigned type : TYPE_BITS; |
31 | unsigned flags : FLAG_BITS; | |
6eb8ae00 | 32 | unsigned char sha1[20]; |
6eb8ae00 DB |
33 | }; |
34 | ||
df843662 NP |
35 | extern const char *typename(unsigned int type); |
36 | extern int type_from_string(const char *str); | |
885a86ab | 37 | |
fc046a75 LT |
38 | extern unsigned int get_max_object_index(void); |
39 | extern struct object *get_indexed_object(unsigned int); | |
3e4339e6 | 40 | |
628b06d7 JH |
41 | /* |
42 | * This can be used to see if we have heard of the object before, but | |
43 | * it can return "yes we have, and here is a half-initialised object" | |
44 | * for an object that we haven't loaded/parsed yet. | |
45 | * | |
46 | * When parsing a commit to create an in-core commit object, its | |
47 | * parents list holds commit objects that represent its parents, but | |
48 | * they are expected to be lazily initialized and do not know what | |
49 | * their trees or parents are yet. When this function returns such a | |
50 | * half-initialised objects, the caller is expected to initialize them | |
51 | * by calling parse_object() on them. | |
52 | */ | |
5d6ccf5c | 53 | struct object *lookup_object(const unsigned char *sha1); |
6eb8ae00 | 54 | |
100c5f3b | 55 | extern void *create_object(const unsigned char *sha1, int type, void *obj); |
6eb8ae00 | 56 | |
75a95490 JK |
57 | /* |
58 | * Returns the object, having parsed it to find out what it is. | |
59 | * | |
60 | * Returns NULL if the object is missing or corrupt. | |
61 | */ | |
5d6ccf5c | 62 | struct object *parse_object(const unsigned char *sha1); |
e9eefa67 | 63 | |
75a95490 JK |
64 | /* |
65 | * Like parse_object, but will die() instead of returning NULL. If the | |
66 | * "name" parameter is not NULL, it is included in the error message | |
67 | * (otherwise, the sha1 hex is given). | |
68 | */ | |
69 | struct object *parse_object_or_die(const unsigned char *sha1, const char *name); | |
70 | ||
9f613ddd JH |
71 | /* Given the result of read_sha1_file(), returns the object after |
72 | * parsing it. eaten_p indicates if the object has a borrowed copy | |
73 | * of buffer and the caller should not free() it. | |
74 | */ | |
21666f1a | 75 | struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p); |
9f613ddd | 76 | |
66e481b0 DB |
77 | /** Returns the object, with potentially excess memory allocated. **/ |
78 | struct object *lookup_unknown_object(const unsigned char *sha1); | |
79 | ||
a6080a0a | 80 | struct object_list *object_list_insert(struct object *item, |
66e481b0 DB |
81 | struct object_list **list_p); |
82 | ||
66e481b0 DB |
83 | int object_list_contains(struct object_list *list, struct object *obj); |
84 | ||
1f1e895f LT |
85 | /* Object array handling .. */ |
86 | void add_object_array(struct object *obj, const char *name, struct object_array *array); | |
e5709a4a | 87 | void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode); |
b2a6d1c6 | 88 | void object_array_remove_duplicates(struct object_array *); |
1f1e895f | 89 | |
bcc0a3ea HV |
90 | void clear_object_flags(unsigned flags); |
91 | ||
6eb8ae00 | 92 | #endif /* OBJECT_H */ |