feat(flag): implement Not operator for Flag

1 files changed, 12 insertions, 1 deletions

diff --git a/mingling_picker/src/value.rs b/mingling_picker/src/value.rs
index 7d52442..ee0d6ee 100644
--- a/mingling_picker/src/value.rs
+++ b/mingling_picker/src/value.rs
@@ -1,6 +1,6 @@
 use std::{
     fmt::{Debug, Display},
-    ops::Deref,
+    ops::{Deref, Not},
 };
 
 /// Parsed result of a boolean-style command-line flag.
@@ -132,3 +132,14 @@ impl Deref for Flag {
         }
     }
 }
+
+impl Not for Flag {
+    type Output = Flag;
+
+    fn not(self) -> Flag {
+        match self {
+            Flag::Active => Flag::Inactive,
+            Flag::Inactive => Flag::Active,
+        }
+    }
+}