stealing

storage/packable/packable.go

@@ -0,0 +1,26 @@
+package packable
+
+type Packable interface {
+	Encode() ([]byte, error)
+	Decode([]byte) error
+}
+
+type String string
+
+func (s *String) String() string {
+	return string(*s)
+}
+
+func (s *String) Encode() ([]byte, error) {
+	return []byte(*s), nil
+}
+
+func (s *String) Decode(b []byte) error {
+	*s = String(string(b))
+	return nil
+}
+
+func NewString(s string) *String {
+	w := String(s)
+	return &w
+}

storage/packable/packable_test.go

@@ -0,0 +1,23 @@
+package packable
+
+import "testing"
+
+func TestPackableString(t *testing.T) {
+	raw := "hello"
+	s := NewString(raw)
+	if s.String() != raw {
+		t.Errorf("cannot convert string to String: %v vs %v", s, raw)
+	}
+
+	packed, err := s.Encode()
+	if err != nil {
+		t.Errorf("cannot encode String: %v", err)
+	}
+
+	x := NewString("")
+	if err := x.Decode(packed); err != nil {
+		t.Errorf("cannot decode string: %v", err)
+	} else if x.String() != raw {
+		t.Errorf("wrong decoded string: %v vs %v", x, raw)
+	}
+}