1 files changed, 15 insertions, 0 deletions
diff --git a/bug/operation.go b/bug/operation.go
new file mode 100644
index 00000000..f36e9e39
--- /dev/null
+++ b/bug/operation.go
@@ -0,0 +1,15 @@
+package bug
+
+type OperationType int
+
+const (
+	UNKNOW OperationType = iota
+	CREATE
+	SET_TITLE
+	ADD_COMMENT
+)
+
+type Operation interface {
+	OpType() OperationType
+	Apply(snapshot Snapshot) Snapshot
+}