1 files changed, 45 insertions, 1 deletions
diff --git a/plumbing/format/packfile/object_pack.go b/plumbing/format/packfile/object_pack.go
index a3e99c0..14337d1 100644
--- a/plumbing/format/packfile/object_pack.go
+++ b/plumbing/format/packfile/object_pack.go
@@ -1,6 +1,8 @@
 package packfile
 
-import "gopkg.in/src-d/go-git.v4/plumbing"
+import (
+	"gopkg.in/src-d/go-git.v4/plumbing"
+)
 
 // ObjectToPack is a representation of an object that is going to be into a
 // pack file.
@@ -39,6 +41,48 @@ func newDeltaObjectToPack(base *ObjectToPack, original, delta plumbing.EncodedOb
 	}
 }
 
+func (o *ObjectToPack) Type() plumbing.ObjectType {
+	if o.Original != nil {
+		return o.Original.Type()
+	}
+
+	if o.Base != nil {
+		return o.Base.Type()
+	}
+
+	if o.Object != nil {
+		return o.Object.Type()
+	}
+
+	panic("cannot get type")
+}
+
+func (o *ObjectToPack) Hash() plumbing.Hash {
+	if o.Original != nil {
+		return o.Original.Hash()
+	}
+
+	do, ok := o.Object.(plumbing.DeltaObject)
+	if ok {
+		return do.ActualHash()
+	}
+
+	panic("cannot get hash")
+}
+
+func (o *ObjectToPack) Size() int64 {
+	if o.Original != nil {
+		return o.Original.Size()
+	}
+
+	do, ok := o.Object.(plumbing.DeltaObject)
+	if ok {
+		return do.ActualSize()
+	}
+
+	panic("cannot get ObjectToPack size")
+}
+
 func (o *ObjectToPack) IsDelta() bool {
 	if o.Base != nil {
 		return true