diff options
| -rw-r--r-- | builtin-diff-tree.c | 5 | ||||
| -rw-r--r-- | object.h | 13 |
2 files changed, 15 insertions, 3 deletions
diff --git a/builtin-diff-tree.c b/builtin-diff-tree.c index 1138c2d..8ecefd4 100644 --- a/builtin-diff-tree.c +++ b/builtin-diff-tree.c @@ -71,8 +71,9 @@ static int diff_tree_stdin(char *line) line[len-1] = 0; if (get_sha1_hex(line, sha1)) return -1; - obj = lookup_object(sha1); - obj = obj ? obj : parse_object(sha1); + obj = lookup_unknown_object(sha1); + if (!obj || !obj->parsed) + obj = parse_object(sha1); if (!obj) return -1; if (obj->type == OBJ_COMMIT) @@ -41,7 +41,18 @@ extern int type_from_string(const char *str); extern unsigned int get_max_object_index(void); extern struct object *get_indexed_object(unsigned int); -/** Internal only **/ +/* + * 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); |