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[PATCH 1/1] builtin/checkout: simplify metadata initialization

From
brian m. carlson <sandals@crustytoothpaste.net>
Date
May 20, 2020, 01:41 UTC
Message-ID
<20200520014156.1570124-1-sandals@crustytoothpaste.net>
In-Reply-To
<ef72aedf-4264-e386-9563-050c54483c93@gmail.com>

When we call init_checkout_metadata in reset_tree, we want to pass the object ID of the commit in question so that it can be passed to filters, or if there is no commit, the tree. We anticipated this latter case, which can occur elsewhere in the checkout code, but it cannot occur here, since reset_tree is called only (indirectly) via switch_branches, which requires that we have a valid commit. switch_branches dies if we lack a name and cannot produce a commit from HEAD, and its caller dies if we do have a branch name but still lack a commit pointer.

Since we know we must always have a valid commit structure in this case, let's remove the dead code paths and just refer to the commit structure. This simplifies the code and makes it easier for the reader.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/checkout.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/builtin/checkout.c b/builtin/checkout.c
index e9d111bb83..e53bdab5b8 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -620,11 +620,7 @@ static int reset_tree(struct tree *tree, const struct checkout_opts *o,
 	opts.verbose_update = o->show_progress;
 	opts.src_index = &the_index;
 	opts.dst_index = &the_index;
-	init_checkout_metadata(&opts.meta, info->refname,
-			       info->commit ? &info->commit->object.oid :
-			       is_null_oid(&info->oid) ? &tree->object.oid :
-			       &info->oid,
-			       NULL);
+	init_checkout_metadata(&opts.meta, info->refname, &info->commit->object.oid, NULL);
 	parse_tree(tree);
 	init_tree_desc(&tree_desc, tree->buffer, tree->size);
 	switch (unpack_trees(1, &tree_desc, &opts)) {
Previous: Derrick StoleeNext: Junio C Hamano
Message 8 of 16 in “Git Test Coverage Report (v2.27.0-rc0)”
  1. Derrick StoleeMay 15, 2020
  2. Derrick StoleeMay 19, 2020
  3. René ScharfeMay 19, 2020
  4. brian m. carlsonMay 19, 2020
  5. brian m. carlsonMay 20, 2020
  6. t4067: make rename detection test output raw diffJonathan Tan, May 19, 2020
  7. Derrick StoleeMay 19, 2020
  8. 1/1 builtin/checkout: simplify metadata initializationbrian m. carlson, May 20, 2020
  9. Junio C HamanoMay 20, 2020
  10. brian m. carlsonMay 20, 2020
  11. 0/2 Improve Fix code coverage for checkoutbrian m. carlson, May 21, 2020
  12. 1/2 builtin/checkout: simplify metadata initializationbrian m. carlson, May 21, 2020
  13. Junio C HamanoMay 21, 2020
  14. brian m. carlsonMay 23, 2020
  15. 2/2 t2060: add a test for switch with --orphan and --discard-changesbrian m. carlson, May 21, 2020
  16. Derrick StoleeMay 21, 2020

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