| #ifndef OBJECT_H |
| #define OBJECT_H |
| |
| struct object_list { |
| struct object *item; |
| struct object_list *next; |
| }; |
| |
| struct object_array { |
| unsigned int nr; |
| unsigned int alloc; |
| struct object_array_entry { |
| struct object *item; |
| const char *name; |
| unsigned mode; |
| } *objects; |
| }; |
| |
| #define OBJECT_ARRAY_INIT { 0, 0, NULL } |
| |
| #define TYPE_BITS 3 |
| #define FLAG_BITS 27 |
| |
| /* |
| * The object type is stored in 3 bits. |
| */ |
| struct object { |
| unsigned parsed : 1; |
| unsigned used : 1; |
| unsigned type : TYPE_BITS; |
| unsigned flags : FLAG_BITS; |
| unsigned char sha1[20]; |
| }; |
| |
| extern const char *typename(unsigned int type); |
| extern int type_from_string(const char *str); |
| |
| extern unsigned int get_max_object_index(void); |
| extern struct object *get_indexed_object(unsigned int); |
| |
| /* |
| * This can be used to see if we have heard of the object before, but |
| * it can return "yes we have, and here is a half-initialised object" |
| * for an object that we haven't loaded/parsed yet. |
| * |
| * When parsing a commit to create an in-core commit object, its |
| * parents list holds commit objects that represent its parents, but |
| * they are expected to be lazily initialized and do not know what |
| * their trees or parents are yet. When this function returns such a |
| * half-initialised objects, the caller is expected to initialize them |
| * by calling parse_object() on them. |
| */ |
| struct object *lookup_object(const unsigned char *sha1); |
| |
| extern void *create_object(const unsigned char *sha1, int type, void *obj); |
| |
| /** Returns the object, having parsed it to find out what it is. **/ |
| struct object *parse_object(const unsigned char *sha1); |
| |
| /* Given the result of read_sha1_file(), returns the object after |
| * parsing it. eaten_p indicates if the object has a borrowed copy |
| * of buffer and the caller should not free() it. |
| */ |
| struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p); |
| |
| /** Returns the object, with potentially excess memory allocated. **/ |
| struct object *lookup_unknown_object(const unsigned char *sha1); |
| |
| struct object_list *object_list_insert(struct object *item, |
| struct object_list **list_p); |
| |
| int object_list_contains(struct object_list *list, struct object *obj); |
| |
| /* Object array handling .. */ |
| void add_object_array(struct object *obj, const char *name, struct object_array *array); |
| void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode); |
| void object_array_remove_duplicates(struct object_array *); |
| |
| void clear_object_flags(unsigned flags); |
| |
| #endif /* OBJECT_H */ |