struct object {
	unsigned parsed : 1;
	unsigned type : TYPE_BITS;
	unsigned flags : FLAG_BITS;
	struct object_id oid;
};

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;
		/*
		 * name or NULL.  If non-NULL, the memory pointed to
		 * is owned by this object *except* if it points at
		 * object_array_slopbuf, which is a static copy of the
		 * empty string.
		 */
		char *name;
		char *path;
		unsigned mode;
	} *objects;
};

struct buffer_slab;

struct parsed_object_pool {
	struct object **obj_hash;
	int nr_objs, obj_hash_size;

	/* TODO: migrate alloc_states to mem-pool? */
	struct alloc_state *blob_state;
	struct alloc_state *tree_state;
	struct alloc_state *commit_state;
	struct alloc_state *tag_state;
	struct alloc_state *object_state;

	/* parent substitutions from .git/info/grafts and .git/shallow */
	struct commit_graft **grafts;
	int grafts_alloc, grafts_nr;

	int is_shallow;
	struct stat_validity *shallow_stat;
	char *alternate_shallow_file;

	int commit_graft_prepared;
	int substituted_parent;

	struct buffer_slab *buffer_slab;
};

struct commit {
	struct object object;
	timestamp_t date;
	struct commit_list *parents;

	/*
	 * If the commit is loaded from the commit-graph file, then this
	 * member may be NULL. Only access it through repo_get_commit_tree()
	 * or get_commit_tree_oid().
	 */
	struct tree *maybe_tree;
	unsigned int index;
};

struct commit_list {
	struct commit *item;
	struct commit_list *next;
};

/* While we can decorate any object with a name, it's only used for commits.. */
struct name_decoration {
	struct name_decoration *next;
	int type;
	char name[FLEX_ARRAY];
};

enum decoration_type {
	DECORATION_NONE = 0,
	DECORATION_REF_LOCAL,
	DECORATION_REF_REMOTE,
	DECORATION_REF_TAG,
	DECORATION_REF_STASH,
	DECORATION_REF_HEAD,
	DECORATION_GRAFTED,
};