Introduce drop-bomb

1 files changed, 21 insertions, 0 deletions

diff --git a/src/drop_bomb.rs b/src/drop_bomb.rs
new file mode 100644
index 000000000..750904a01
--- /dev/null
+++ b/src/drop_bomb.rs
@@ -0,0 +1,21 @@
+use std::borrow::Cow;
+
+pub struct DropBomb {
+    msg: Cow<'static, str>,
+    defused: bool,
+}
+
+impl DropBomb {
+    pub fn new(msg: impl Into<Cow<'static, str>>) -> DropBomb {
+        DropBomb { msg: msg.into(), defused: false }
+    }
+    pub fn defuse(&mut self) { self.defused = true }
+}
+
+impl Drop for DropBomb {
+    fn drop(&mut self) {
+        if !self.defused && !::std::thread::panicking() {
+            panic!("{}", self.msg)
+        }
+    }
+}