commitquery: Make a reusable engine thingy

1 files changed, 14 insertions, 0 deletions

diff --git a/commitquery/queries_ancestor.go b/commitquery/queries_ancestor.go
new file mode 100644
index 00000000..e2c955c6
--- /dev/null
+++ b/commitquery/queries_ancestor.go
@@ -0,0 +1,14 @@
+package commitquery
+
+import objectid "codeberg.org/lindenii/furgit/object/id"
+
+// IsAncestor reports whether ancestor is reachable from descendant through
+// commit parent edges.
+//
+// Both inputs are peeled through annotated tags before commit traversal.
+func (queries *Queries) IsAncestor(ancestor, descendant objectid.ObjectID) (bool, error) {
+	query := queries.acquire()
+	defer queries.release(query)
+
+	return query.IsAncestor(ancestor, descendant)
+}