Urgh I made some wrong amends and I'm too tired to separate the commits out this time

ancestor: Split out of reachability
mergebase: Add merge base routines
internal/commitquery: Add commit query context engine thingy
internal/peel: Shared tag peeling
errors: Shared object query errors
internal/testgit: Add rooted repo helpers; remove raw path access
objectstore/memory: Add in-memory object store
objectid: Add Compare helper

1 files changed, 21 insertions, 0 deletions

diff --git a/objectstore/memory/add.go b/objectstore/memory/add.go
new file mode 100644
index 00000000..80d0022f
--- /dev/null
+++ b/objectstore/memory/add.go
@@ -0,0 +1,21 @@
+package memory
+
+import (
+	"codeberg.org/lindenii/furgit/objectheader"
+	"codeberg.org/lindenii/furgit/objectid"
+	"codeberg.org/lindenii/furgit/objecttype"
+)
+
+// AddObject stores one object body and returns its object ID.
+func (store *Store) AddObject(ty objecttype.Type, body []byte) objectid.ObjectID {
+	header, ok := objectheader.Encode(ty, int64(len(body)))
+	if !ok {
+		panic("failed to encode object header")
+	}
+
+	raw := append(append([]byte(nil), header...), body...)
+	id := store.algo.Sum(raw)
+	store.objects[id] = storedObject{ty: ty, content: append([]byte(nil), body...)}
+
+	return id
+}