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#ifndef OBJECT_H
#define OBJECT_H
struct object_list {
struct object *item;
struct object_list *next;
};
struct object_refs {
unsigned count;
struct object *base;
struct object *ref[FLEX_ARRAY]; /* more */
};
struct object_array {
unsigned int nr;
unsigned int alloc;
struct object_array_entry {
struct object *item;
const char *name;
} *objects;
};
#define TYPE_BITS 3
#define FLAG_BITS 27
/*
* The object type is stored in 3 bits.
*/
enum object_type {
OBJ_NONE = 0,
OBJ_COMMIT = 1,
OBJ_TREE = 2,
OBJ_BLOB = 3,
OBJ_TAG = 4,
/* 5/6 for future expansion */
OBJ_DELTA = 7,
OBJ_BAD,
};
struct object {
unsigned parsed : 1;
unsigned used : 1;
unsigned type : TYPE_BITS;
unsigned flags : FLAG_BITS;
unsigned char sha1[20];
};
extern int track_object_refs;
extern const char *type_names[9];
extern unsigned int get_max_object_index(void);
extern struct object *get_indexed_object(unsigned int);
static inline const char *typename(unsigned int type)
{
return type_names[type > OBJ_BAD ? OBJ_BAD : type];
}
extern struct object_refs *lookup_object_refs(struct object *);
/** Internal only **/
struct object *lookup_object(const unsigned char *sha1);
/** Returns the object, having looked it up as being the given type. **/
struct object *lookup_object_type(const unsigned char *sha1, const char *type);
void created_object(const unsigned char *sha1, struct object *obj);
/** Returns the object, having parsed it to find out what it is. **/
struct object *parse_object(const unsigned char *sha1);
/** Returns the object, with potentially excess memory allocated. **/
struct object *lookup_unknown_object(const unsigned char *sha1);
struct object_refs *alloc_object_refs(unsigned count);
void set_object_refs(struct object *obj, struct object_refs *refs);
void mark_reachable(struct object *obj, unsigned int mask);
struct object_list *object_list_insert(struct object *item,
struct object_list **list_p);
void object_list_append(struct object *item,
struct object_list **list_p);
unsigned object_list_length(struct object_list *list);
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);
#endif /* OBJECT_H */
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