object/fetch: Port tag

1 files changed, 26 insertions, 0 deletions

diff --git a/object/fetch/tag.go b/object/fetch/tag.go
new file mode 100644
index 00000000..422b818d
--- /dev/null
+++ b/object/fetch/tag.go
@@ -0,0 +1,26 @@
+package fetch
+
+import (
+	giterrors "lindenii.org/go/furgit/errors"
+	oid "lindenii.org/go/furgit/object/id"
+	"lindenii.org/go/furgit/object/stored"
+	"lindenii.org/go/furgit/object/tag"
+	"lindenii.org/go/furgit/object/typ"
+)
+
+// ExactTag reads, parses, and wraps the tag at id.
+//
+// Labels: Life-Parent.
+func (r *Fetcher) ExactTag(id oid.ObjectID) (*stored.Stored[*tag.Tag], error) {
+	parsed, err := r.parseObject(id)
+	if err != nil {
+		return nil, err
+	}
+
+	tag, ok := parsed.(*tag.Tag)
+	if !ok {
+		return nil, &giterrors.ObjectTypeError{OID: id, Got: parsed.ObjectType(), Want: typ.TypeTag}
+	}
+
+	return stored.New(id, tag), nil
+}