From: Elijah Newren <newren@xxxxxxxxx>
In order to allow trivial directory resolution, we first need to be able
to gather more information to determine if the optimization is safe. To
enable that, we need a way of deferring the recursion into the directory
until a later time. Naturally, deferring the entry into a subtree means
that we need some function that will later recurse into the subdirectory
exactly the same way that collect_merge_info_callback() would have done.
Add a helper function that does this. For now this function is not used
but a subsequent commit will change that. Future commits will also make
the function sometimes resolve directories instead of traversing inside.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
merge-ort.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/merge-ort.c b/merge-ort.c
index 3d3f00b3b45..eb0e18d7546 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -1196,6 +1196,70 @@ static int collect_merge_info_callback(int n,
return mask;
}
+MAYBE_UNUSED
+static int handle_deferred_entries(struct merge_options *opt,
+ struct traverse_info *info)
+{
+ struct rename_info *renames = &opt->priv->renames;
+ struct hashmap_iter iter;
+ struct strmap_entry *entry;
+ int side, ret = 0;
+
+ for (side = MERGE_SIDE1; side <= MERGE_SIDE2; side++) {
+ renames->trivial_merges_okay[side] = 0;
+ strintmap_for_each_entry(&renames->possible_trivial_merges[side],
+ &iter, entry) {
+ const char *path = entry->key;
+ unsigned dir_rename_mask = (intptr_t)entry->value;
+ struct conflict_info *ci;
+ unsigned dirmask;
+ struct tree_desc t[3];
+ void *buf[3] = {NULL,};
+ int i;
+
+ ci = strmap_get(&opt->priv->paths, path);
+ VERIFY_CI(ci);
+ dirmask = ci->dirmask;
+
+ info->name = path;
+ info->namelen = strlen(path);
+ info->pathlen = info->namelen + 1;
+
+ for (i = 0; i < 3; i++, dirmask >>= 1) {
+ if (i == 1 && ci->match_mask == 3)
+ t[1] = t[0];
+ else if (i == 2 && ci->match_mask == 5)
+ t[2] = t[0];
+ else if (i == 2 && ci->match_mask == 6)
+ t[2] = t[1];
+ else {
+ const struct object_id *oid = NULL;
+ if (dirmask & 1)
+ oid = &ci->stages[i].oid;
+ buf[i] = fill_tree_descriptor(opt->repo,
+ t+i, oid);
+ }
+ }
+
+ ci->match_mask &= ci->filemask;
+ opt->priv->current_dir_name = path;
+ renames->dir_rename_mask = dir_rename_mask;
+ if (renames->dir_rename_mask == 0 ||
+ renames->dir_rename_mask == 0x07)
+ ret = traverse_trees(NULL, 3, t, info);
+ else
+ ret = traverse_trees_wrapper(NULL, 3, t, info);
+
+ for (i = MERGE_BASE; i <= MERGE_SIDE2; i++)
+ free(buf[i]);
+
+ if (ret < 0)
+ return ret;
+ }
+ }
+ return ret;
+}
+
static int collect_merge_info(struct merge_options *opt,
struct tree *merge_base,
struct tree *side1,
--
gitgitgadget
