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Merge branch 'js/merge-tree-3-trees'

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"git merge-tree" has learned that the three trees involved in the
3-way merge only need to be trees, not necessarily commits.

* js/merge-tree-3-trees:
  fill_tree_descriptor(): mark error message for translation
  cache-tree: avoid an unnecessary check
  Always check `parse_tree*()`'s return value
  t4301: verify that merge-tree fails on missing blob objects
  merge-ort: do check `parse_tree()`'s return value
  merge-tree: fail with a non-zero exit code on missing tree objects
  merge-tree: accept 3 trees as arguments
This commit is contained in:
Junio C Hamano
2024-03-07 15:59:41 -08:00
parent 76d1cd8e5e 342990c7aa
commit ae46d5fb98
16 changed files with 124 additions and 35 deletions
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48
builtin/merge-tree.c
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@ -429,35 +429,49 @@ static int real_merge(struct merge_tree_options *o,
struct merge_options opt;
copy_merge_options(&opt, &o->merge_options);
parent1 = get_merge_parent(branch1);
if (!parent1)
help_unknown_ref(branch1, "merge-tree",
_("not something we can merge"));
parent2 = get_merge_parent(branch2);
if (!parent2)
help_unknown_ref(branch2, "merge-tree",
_("not something we can merge"));
opt.show_rename_progress = 0;
opt.branch1 = branch1;
opt.branch2 = branch2;
if (merge_base) {
struct commit *base_commit;
struct tree *base_tree, *parent1_tree, *parent2_tree;
base_commit = lookup_commit_reference_by_name(merge_base);
if (!base_commit)
die(_("could not lookup commit '%s'"), merge_base);
/*
* We actually only need the trees because we already
* have a merge base.
*/
struct object_id base_oid, head_oid, merge_oid;
if (repo_get_oid_treeish(the_repository, merge_base, &base_oid))
die(_("could not parse as tree '%s'"), merge_base);
base_tree = parse_tree_indirect(&base_oid);
if (!base_tree)
die(_("unable to read tree (%s)"), oid_to_hex(&base_oid));
if (repo_get_oid_treeish(the_repository, branch1, &head_oid))
die(_("could not parse as tree '%s'"), branch1);
parent1_tree = parse_tree_indirect(&head_oid);
if (!parent1_tree)
die(_("unable to read tree (%s)"), oid_to_hex(&head_oid));
if (repo_get_oid_treeish(the_repository, branch2, &merge_oid))
die(_("could not parse as tree '%s'"), branch2);
parent2_tree = parse_tree_indirect(&merge_oid);
if (!parent2_tree)
die(_("unable to read tree (%s)"), oid_to_hex(&merge_oid));
opt.ancestor = merge_base;
base_tree = repo_get_commit_tree(the_repository, base_commit);
parent1_tree = repo_get_commit_tree(the_repository, parent1);
parent2_tree = repo_get_commit_tree(the_repository, parent2);
merge_incore_nonrecursive(&opt, base_tree, parent1_tree, parent2_tree, &result);
} else {
parent1 = get_merge_parent(branch1);
if (!parent1)
help_unknown_ref(branch1, "merge-tree",
_("not something we can merge"));
parent2 = get_merge_parent(branch2);
if (!parent2)
help_unknown_ref(branch2, "merge-tree",
_("not something we can merge"));
/*
* Get the merge bases, in reverse order; see comment above
* merge_incore_recursive in merge-ort.h