1 files changed, 20 insertions, 0 deletions
diff --git a/protocol/src/play_result.rs b/protocol/src/play_result.rs
new file mode 100644
index 0000000..21961ee
--- /dev/null
+++ b/protocol/src/play_result.rs
@@ -0,0 +1,20 @@
+pub enum MoveResult<Stay, Go> {
+    Stay(Stay),
+    Go(Go),
+}
+
+impl<Stay, Go> MoveResult<Stay, Go> {
+    pub fn stay(self) -> Result<Stay, anyhow::Error> {
+        match self {
+            MoveResult::Stay(o) => Ok(o),
+            MoveResult::Go(_) => Err(anyhow::anyhow!("Not in stay state")),
+        }
+    }
+
+    pub fn go(self) -> Result<Go, anyhow::Error> {
+        match self {
+            MoveResult::Go(f) => Ok(f),
+            MoveResult::Stay(_) => Err(anyhow::anyhow!("Not in go state")),
+        }
+    }
+}