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commit.c: add repo_get_commit_tree()

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Remove the implicit dependency on the_repository in this function.
It will be used in sha1-name.c functions when they are updated to take
any 'struct repository'. get_commit_tree() remains as a compat wrapper,
to be slowly replaced later.

Any access to "maybe_tree" field directly will result in _broken_ code
after running through commit.cocci because we can't know what is the
right repository to use.

the_repository would be correct most of the time. But we're relying less
and less on the_repository and that assumption may no longer be
true. The transformation now is more of a poor man replacement for a C++
compiler catching access to private fields.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2019-04-16 16:33:19 +07:00
committed by Junio C Hamano
parent a133c40b23
commit 301b8c7f40
3 changed files with 9 additions and 7 deletions
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5
commit.c
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@ -345,7 +345,8 @@ static inline void set_commit_tree(struct commit *c, struct tree *t)
c->maybe_tree = t;
}
struct tree *get_commit_tree(const struct commit *commit)
struct tree *repo_get_commit_tree(struct repository *r,
const struct commit *commit)
{
if (commit->maybe_tree || !commit->object.parsed)
return commit->maybe_tree;
@ -353,7 +354,7 @@ struct tree *get_commit_tree(const struct commit *commit)
if (commit->graph_pos == COMMIT_NOT_FROM_GRAPH)
BUG("commit has NULL tree, but was not loaded from commit-graph");
return get_commit_tree_in_graph(the_repository, commit);
return get_commit_tree_in_graph(r, commit);
}
struct object_id *get_commit_tree_oid(const struct commit *commit)