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_array { 10 unsigned int nr; 11 unsigned int alloc; 12 struct object_array_entry { 13 struct object *item; 14 const char *name; 15 unsigned mode; 16 } *objects; 17}; 18 19#define OBJECT_ARRAY_INIT { 0, 0, NULL } 20 21#define TYPE_BITS 3 22#define FLAG_BITS 27 23 24/* 25 * The object type is stored in 3 bits. 26 */ 27struct object { 28 unsigned parsed : 1; 29 unsigned used : 1; 30 unsigned type : TYPE_BITS; 31 unsigned flags : FLAG_BITS; 32 unsigned char sha1[20]; 33}; 34 35extern const char *typename(unsigned int type); 36extern int type_from_string(const char *str); 37 38extern unsigned int get_max_object_index(void); 39extern struct object *get_indexed_object(unsigned int); 40 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 */ 53struct object *lookup_object(const unsigned char *sha1); 54 55extern void *create_object(const unsigned char *sha1, int type, void *obj); 56 57/** Returns the object, having parsed it to find out what it is. **/ 58struct object *parse_object(const unsigned char *sha1); 59 60/* Given the result of read_sha1_file(), returns the object after 61 * parsing it. eaten_p indicates if the object has a borrowed copy 62 * of buffer and the caller should not free() it. 63 */ 64struct object *parse_object_buffer(const unsigned char *sha1, enum object_type type, unsigned long size, void *buffer, int *eaten_p); 65 66/** Returns the object, with potentially excess memory allocated. **/ 67struct object *lookup_unknown_object(const unsigned char *sha1); 68 69struct object_list *object_list_insert(struct object *item, 70 struct object_list **list_p); 71 72int object_list_contains(struct object_list *list, struct object *obj); 73 74/* Object array handling .. */ 75void add_object_array(struct object *obj, const char *name, struct object_array *array); 76void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode); 77void object_array_remove_duplicates(struct object_array *); 78 79#endif /* OBJECT_H */