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Remove TYPE_* constant macros and use object_type enums consistently.

Browse Source 
This updates the type-enumeration constants introduced to reduce
the memory footprint of "struct object" to match the type bits
already used in the packfile format, by removing the former
(i.e. TYPE_* constant macros) and using the latter (i.e. enum
object_type) throughout the code for consistency.

Eventually we can stop passing around the "type strings"
entirely, and this will help - no confusion about two different
integer enumeration.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Linus Torvalds 2006-07-11 20:45:31 -07:00 committed by Junio C Hamano
parent d3ba675aae
commit 1974632c66
22 changed files with 87 additions and 92 deletions
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6
blob.c
View File

@ -10,12 +10,12 @@ struct blob *lookup_blob(const unsigned char *sha1)
if (!obj) {
struct blob *ret = alloc_blob_node();
created_object(sha1, &ret->object);
ret->object.type = TYPE_BLOB;
ret->object.type = OBJ_BLOB;
return ret;
}
if (!obj->type)
obj->type = TYPE_BLOB;
if (obj->type != TYPE_BLOB) {
obj->type = OBJ_BLOB;
if (obj->type != OBJ_BLOB) {
error("Object %s is a %s, not a blob",
sha1_to_hex(sha1), typename(obj->type));
return NULL;

6
builtin-diff.c
View File

@ -285,9 +285,9 @@ int cmd_diff(int argc, const char **argv, char **envp)
obj = deref_tag(obj, NULL, 0);
if (!obj)
die("invalid object '%s' given.", name);
if (obj->type == TYPE_COMMIT)
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == TYPE_TREE) {
if (obj->type == OBJ_TREE) {
if (ARRAY_SIZE(ent) <= ents)
die("more than %d trees given: '%s'",
(int) ARRAY_SIZE(ent), name);
@ -297,7 +297,7 @@ int cmd_diff(int argc, const char **argv, char **envp)
ents++;
continue;
}
if (obj->type == TYPE_BLOB) {
if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die("more than two blobs given: '%s'", name);
memcpy(blob[blobs].sha1, obj->sha1, 20);

2
builtin-fmt-merge-msg.c
View File

@ -181,7 +181,7 @@ static void shortlog(const char *name, unsigned char *sha1,
int flags = UNINTERESTING | TREECHANGE | SEEN | SHOWN | ADDED;
branch = deref_tag(parse_object(sha1), sha1_to_hex(sha1), 40);
if (!branch || branch->type != TYPE_COMMIT)
if (!branch || branch->type != OBJ_COMMIT)
return;
setup_revisions(0, NULL, rev, NULL);

4
builtin-grep.c
View File

@ -891,9 +891,9 @@ static int grep_tree(struct grep_opt *opt, const char **paths,
static int grep_object(struct grep_opt *opt, const char **paths,
struct object *obj, const char *name)
{
if (obj->type == TYPE_BLOB)
if (obj->type == OBJ_BLOB)
return grep_sha1(opt, obj->sha1, name);
if (obj->type == TYPE_COMMIT || obj->type == TYPE_TREE) {
if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
struct tree_desc tree;
void *data;
int hit;

6
builtin-rev-list.c
View File

@ -167,16 +167,16 @@ static void show_commit_list(struct rev_info *revs)
const char *name = pending->name;
if (obj->flags & (UNINTERESTING | SEEN))
continue;
if (obj->type == TYPE_TAG) {
if (obj->type == OBJ_TAG) {
obj->flags |= SEEN;
add_object_array(obj, name, &objects);
continue;
}
if (obj->type == TYPE_TREE) {
if (obj->type == OBJ_TREE) {
process_tree((struct tree *)obj, &objects, NULL, name);
continue;
}
if (obj->type == TYPE_BLOB) {
if (obj->type == OBJ_BLOB) {
process_blob((struct blob *)obj, &objects, NULL, name);
continue;
}

6
commit.c
View File

@ -56,7 +56,7 @@ static struct commit *check_commit(struct object *obj,
const unsigned char *sha1,
int quiet)
{
if (obj->type != TYPE_COMMIT) {
if (obj->type != OBJ_COMMIT) {
if (!quiet)
error("Object %s is a %s, not a commit",
sha1_to_hex(sha1), typename(obj->type));
@ -86,11 +86,11 @@ struct commit *lookup_commit(const unsigned char *sha1)
if (!obj) {
struct commit *ret = alloc_commit_node();
created_object(sha1, &ret->object);
ret->object.type = TYPE_COMMIT;
ret->object.type = OBJ_COMMIT;
return ret;
}
if (!obj->type)
obj->type = TYPE_COMMIT;
obj->type = OBJ_COMMIT;
return check_commit(obj, sha1, 0);
}

2
describe.c
View File

@ -67,7 +67,7 @@ static int get_name(const char *path, const unsigned char *sha1)
* Otherwise only annotated tags are used.
*/
if (!strncmp(path, "refs/tags/", 10)) {
if (object->type == TYPE_TAG)
if (object->type == OBJ_TAG)
prio = 2;
else
prio = 1;

10
fetch-pack.c
View File

@ -46,7 +46,7 @@ static int rev_list_insert_ref(const char *path, const unsigned char *sha1)
{
struct object *o = deref_tag(parse_object(sha1), path, 0);
if (o && o->type == TYPE_COMMIT)
if (o && o->type == OBJ_COMMIT)
rev_list_push((struct commit *)o, SEEN);
return 0;
@ -256,14 +256,14 @@ static int mark_complete(const char *path, const unsigned char *sha1)
{
struct object *o = parse_object(sha1);
while (o && o->type == TYPE_TAG) {
while (o && o->type == OBJ_TAG) {
struct tag *t = (struct tag *) o;
if (!t->tagged)
break; /* broken repository */
o->flags |= COMPLETE;
o = parse_object(t->tagged->sha1);
}
if (o && o->type == TYPE_COMMIT) {
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
commit->object.flags |= COMPLETE;
insert_by_date(commit, &complete);
@ -357,7 +357,7 @@ static int everything_local(struct ref **refs, int nr_match, char **match)
* in sync with the other side at some time after
* that (it is OK if we guess wrong here).
*/
if (o->type == TYPE_COMMIT) {
if (o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
if (!cutoff || cutoff < commit->date)
cutoff = commit->date;
@ -376,7 +376,7 @@ static int everything_local(struct ref **refs, int nr_match, char **match)
struct object *o = deref_tag(lookup_object(ref->old_sha1),
NULL, 0);
if (!o || o->type != TYPE_COMMIT || !(o->flags & COMPLETE))
if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
continue;
if (!(o->flags & SEEN)) {

8
fetch.c
View File

@ -118,20 +118,20 @@ static struct object_list **process_queue_end = &process_queue;
static int process_object(struct object *obj)
{
if (obj->type == TYPE_COMMIT) {
if (obj->type == OBJ_COMMIT) {
if (process_commit((struct commit *)obj))
return -1;
return 0;
}
if (obj->type == TYPE_TREE) {
if (obj->type == OBJ_TREE) {
if (process_tree((struct tree *)obj))
return -1;
return 0;
}
if (obj->type == TYPE_BLOB) {
if (obj->type == OBJ_BLOB) {
return 0;
}
if (obj->type == TYPE_TAG) {
if (obj->type == OBJ_TAG) {
if (process_tag((struct tag *)obj))
return -1;
return 0;

10
fsck-objects.c
View File

@ -297,13 +297,13 @@ static int fsck_sha1(unsigned char *sha1)
if (obj->flags & SEEN)
return 0;
obj->flags |= SEEN;
if (obj->type == TYPE_BLOB)
if (obj->type == OBJ_BLOB)
return 0;
if (obj->type == TYPE_TREE)
if (obj->type == OBJ_TREE)
return fsck_tree((struct tree *) obj);
if (obj->type == TYPE_COMMIT)
if (obj->type == OBJ_COMMIT)
return fsck_commit((struct commit *) obj);
if (obj->type == TYPE_TAG)
if (obj->type == OBJ_TAG)
return fsck_tag((struct tag *) obj);
/* By now, parse_object() would've returned NULL instead. */
return objerror(obj, "unknown type '%d' (internal fsck error)", obj->type);
@ -472,7 +472,7 @@ static int fsck_cache_tree(struct cache_tree *it)
}
mark_reachable(obj, REACHABLE);
obj->used = 1;
if (obj->type != TYPE_TREE)
if (obj->type != OBJ_TREE)
err |= objerror(obj, "non-tree in cache-tree");
}
for (i = 0; i < it->subtree_nr; i++)

12
http-push.c
View File

@ -1784,16 +1784,16 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
if (obj->flags & (UNINTERESTING | SEEN))
continue;
if (obj->type == TYPE_TAG) {
if (obj->type == OBJ_TAG) {
obj->flags |= SEEN;
p = add_one_object(obj, p);
continue;
}
if (obj->type == TYPE_TREE) {
if (obj->type == OBJ_TREE) {
p = process_tree((struct tree *)obj, p, NULL, name);
continue;
}
if (obj->type == TYPE_BLOB) {
if (obj->type == OBJ_BLOB) {
p = process_blob((struct blob *)obj, p, NULL, name);
continue;
}
@ -1960,12 +1960,12 @@ static int ref_newer(const unsigned char *new_sha1,
* old. Otherwise we require --force.
*/
o = deref_tag(parse_object(old_sha1), NULL, 0);
if (!o || o->type != TYPE_COMMIT)
if (!o || o->type != OBJ_COMMIT)
return 0;
old = (struct commit *) o;
o = deref_tag(parse_object(new_sha1), NULL, 0);
if (!o || o->type != TYPE_COMMIT)
if (!o || o->type != OBJ_COMMIT)
return 0;
new = (struct commit *) o;
@ -2044,7 +2044,7 @@ static void add_remote_info_ref(struct remote_ls_ctx *ls)
fwrite_buffer(ref_info, 1, len, buf);
free(ref_info);
if (o->type == TYPE_TAG) {
if (o->type == OBJ_TAG) {
o = deref_tag(o, ls->dentry_name, 0);
if (o) {
len = strlen(ls->dentry_name) + 45;

8
name-rev.c
View File

@ -84,14 +84,14 @@ static int name_ref(const char *path, const unsigned char *sha1)
if (tags_only && strncmp(path, "refs/tags/", 10))
return 0;
while (o && o->type == TYPE_TAG) {
while (o && o->type == OBJ_TAG) {
struct tag *t = (struct tag *) o;
if (!t->tagged)
break; /* broken repository */
o = parse_object(t->tagged->sha1);
deref = 1;
}
if (o && o->type == TYPE_COMMIT) {
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
if (!strncmp(path, "refs/heads/", 11))
@ -111,7 +111,7 @@ static const char* get_rev_name(struct object *o)
struct rev_name *n;
struct commit *c;
if (o->type != TYPE_COMMIT)
if (o->type != OBJ_COMMIT)
return "undefined";
c = (struct commit *) o;
n = c->util;
@ -172,7 +172,7 @@ int main(int argc, char **argv)
}
o = deref_tag(parse_object(sha1), *argv, 0);
if (!o || o->type != TYPE_COMMIT) {
if (!o || o->type != OBJ_COMMIT) {
fprintf(stderr, "Could not get commit for %s. Skipping.\n",
*argv);
continue;

7
object.c
View File

@ -19,7 +19,8 @@ struct object *get_indexed_object(unsigned int idx)
}
const char *type_names[] = {
"none", "blob", "tree", "commit", "bad"
"none", "commit", "tree", "blob", "tag",
"bad type 5", "bad type 6", "delta", "bad",
};
static unsigned int hash_obj(struct object *obj, unsigned int n)
@ -88,7 +89,7 @@ void created_object(const unsigned char *sha1, struct object *obj)
{
obj->parsed = 0;
obj->used = 0;
obj->type = TYPE_NONE;
obj->type = OBJ_NONE;
obj->flags = 0;
memcpy(obj->sha1, sha1, 20);
@ -131,7 +132,7 @@ struct object *lookup_unknown_object(const unsigned char *sha1)
if (!obj) {
union any_object *ret = xcalloc(1, sizeof(*ret));
created_object(sha1, &ret->object);
ret->object.type = TYPE_NONE;
ret->object.type = OBJ_NONE;
return &ret->object;
}
return obj;

23
object.h
View File

@ -24,12 +24,19 @@ struct object_array {
#define TYPE_BITS 3
#define FLAG_BITS 27
#define TYPE_NONE 0
#define TYPE_BLOB 1
#define TYPE_TREE 2
#define TYPE_COMMIT 3
#define TYPE_TAG 4
#define TYPE_BAD 5
/*
* 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;
@ -40,14 +47,14 @@ struct object {
};
extern int track_object_refs;
extern const char *type_names[];
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 > TYPE_TAG ? TYPE_BAD : type];
return type_names[type > OBJ_BAD ? OBJ_BAD : type];
}
extern struct object_refs *lookup_object_refs(struct object *);

15
pack.h
View File

@ -1,20 +1,7 @@
#ifndef PACK_H
#define PACK_H
/*
* The packed object type is stored in 3 bits.
* The type value 0 is a reserved prefix if ever there is more than 7
* object types, or any future format extensions.
*/
enum object_type {
OBJ_EXT = 0,
OBJ_COMMIT = 1,
OBJ_TREE = 2,
OBJ_BLOB = 3,
OBJ_TAG = 4,
/* 5/6 for future expansion */
OBJ_DELTA = 7,
};
#include "object.h"
/*
* Packed object header

12
revision.c
View File

@ -135,7 +135,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
/*
* Tag object? Look what it points to..
*/
while (object->type == TYPE_TAG) {
while (object->type == OBJ_TAG) {
struct tag *tag = (struct tag *) object;
if (revs->tag_objects && !(flags & UNINTERESTING))
add_pending_object(revs, object, tag->tag);
@ -148,7 +148,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
* Commit object? Just return it, we'll do all the complex
* reachability crud.
*/
if (object->type == TYPE_COMMIT) {
if (object->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)object;
if (parse_commit(commit) < 0)
die("unable to parse commit %s", name);
@ -164,7 +164,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
* Tree object? Either mark it uniniteresting, or add it
* to the list of objects to look at later..
*/
if (object->type == TYPE_TREE) {
if (object->type == OBJ_TREE) {
struct tree *tree = (struct tree *)object;
if (!revs->tree_objects)
return NULL;
@ -179,7 +179,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
/*
* Blob object? You know the drill by now..
*/
if (object->type == TYPE_BLOB) {
if (object->type == OBJ_BLOB) {
struct blob *blob = (struct blob *)object;
if (!revs->blob_objects)
return NULL;
@ -494,11 +494,11 @@ static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
return 0;
while (1) {
it = get_reference(revs, arg, sha1, 0);
if (it->type != TYPE_TAG)
if (it->type != OBJ_TAG)
break;
memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
}
if (it->type != TYPE_COMMIT)
if (it->type != OBJ_COMMIT)
return 0;
commit = (struct commit *)it;
for (parents = commit->parents; parents; parents = parents->next) {

4
send-pack.c
View File

@ -151,12 +151,12 @@ static int ref_newer(const unsigned char *new_sha1,
* old. Otherwise we require --force.
*/
o = deref_tag(parse_object(old_sha1), NULL, 0);
if (!o || o->type != TYPE_COMMIT)
if (!o || o->type != OBJ_COMMIT)
return 0;
old = (struct commit *) o;
o = deref_tag(parse_object(new_sha1), NULL, 0);
if (!o || o->type != TYPE_COMMIT)
if (!o || o->type != OBJ_COMMIT)
return 0;
new = (struct commit *) o;

2
server-info.c
View File

@ -12,7 +12,7 @@ static int add_info_ref(const char *path, const unsigned char *sha1)
struct object *o = parse_object(sha1);
fprintf(info_ref_fp, "%s %s\n", sha1_to_hex(sha1), path);
if (o->type == TYPE_TAG) {
if (o->type == OBJ_TAG) {
o = deref_tag(o, path, 0);
if (o)
fprintf(info_ref_fp, "%s %s^{}\n",

12
sha1_name.c
View File

@ -381,13 +381,13 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
sp++; /* beginning of type name, or closing brace for empty */
if (!strncmp(commit_type, sp, 6) && sp[6] == '}')
expected_type = TYPE_COMMIT;
expected_type = OBJ_COMMIT;
else if (!strncmp(tree_type, sp, 4) && sp[4] == '}')
expected_type = TYPE_TREE;
expected_type = OBJ_TREE;
else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')
expected_type = TYPE_BLOB;
expected_type = OBJ_BLOB;
else if (sp[0] == '}')
expected_type = TYPE_NONE;
expected_type = OBJ_NONE;
else
return -1;
@ -416,9 +416,9 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
memcpy(sha1, o->sha1, 20);
return 0;
}
if (o->type == TYPE_TAG)
if (o->type == OBJ_TAG)
o = ((struct tag*) o)->tagged;
else if (o->type == TYPE_COMMIT)
else if (o->type == OBJ_COMMIT)
o = &(((struct commit *) o)->tree->object);
else
return error("%.*s: expected %s type, but the object dereferences to %s type",

8
tag.c
View File

@ -5,7 +5,7 @@ const char *tag_type = "tag";
struct object *deref_tag(struct object *o, const char *warn, int warnlen)
{
while (o && o->type == TYPE_TAG)
while (o && o->type == OBJ_TAG)
o = parse_object(((struct tag *)o)->tagged->sha1);
if (!o && warn) {
if (!warnlen)
@ -21,12 +21,12 @@ struct tag *lookup_tag(const unsigned char *sha1)
if (!obj) {
struct tag *ret = alloc_tag_node();
created_object(sha1, &ret->object);
ret->object.type = TYPE_TAG;
ret->object.type = OBJ_TAG;
return ret;
}
if (!obj->type)
obj->type = TYPE_TAG;
if (obj->type != TYPE_TAG) {
obj->type = OBJ_TAG;
if (obj->type != OBJ_TAG) {
error("Object %s is a %s, not a tree",
sha1_to_hex(sha1), typename(obj->type));
return NULL;

12
tree.c
View File

@ -131,12 +131,12 @@ struct tree *lookup_tree(const unsigned char *sha1)
if (!obj) {
struct tree *ret = alloc_tree_node();
created_object(sha1, &ret->object);
ret->object.type = TYPE_TREE;
ret->object.type = OBJ_TREE;
return ret;
}
if (!obj->type)
obj->type = TYPE_TREE;
if (obj->type != TYPE_TREE) {
obj->type = OBJ_TREE;
if (obj->type != OBJ_TREE) {
error("Object %s is a %s, not a tree",
sha1_to_hex(sha1), typename(obj->type));
return NULL;
@ -216,11 +216,11 @@ struct tree *parse_tree_indirect(const unsigned char *sha1)
do {
if (!obj)
return NULL;
if (obj->type == TYPE_TREE)
if (obj->type == OBJ_TREE)
return (struct tree *) obj;
else if (obj->type == TYPE_COMMIT)
else if (obj->type == OBJ_COMMIT)
obj = &(((struct commit *) obj)->tree->object);
else if (obj->type == TYPE_TAG)
else if (obj->type == OBJ_TAG)
obj = ((struct tag *) obj)->tagged;
else
return NULL;

4
upload-pack.c
View File

@ -326,7 +326,7 @@ static int got_sha1(char *hex, unsigned char *sha1)
o = parse_object(sha1);
if (!o)
die("oops (%s)", sha1_to_hex(sha1));
if (o->type == TYPE_COMMIT) {
if (o->type == OBJ_COMMIT) {
struct commit_list *parents;
if (o->flags & THEY_HAVE)
return 0;
@ -457,7 +457,7 @@ static int send_ref(const char *refname, const unsigned char *sha1)
o->flags |= OUR_REF;
nr_our_refs++;
}
if (o->type == TYPE_TAG) {
if (o->type == OBJ_TAG) {
o = deref_tag(o, refname, 0);
packet_write(1, "%s %s^{}\n", sha1_to_hex(o->sha1), refname);
}