Create Poisonable API

1 files changed, 47 insertions, 0 deletions

diff --git a/src/poisonable/error.rs b/src/poisonable/error.rs
new file mode 100644
index 0000000..98a167c
--- /dev/null
+++ b/src/poisonable/error.rs
@@ -0,0 +1,47 @@
+use core::fmt;
+use std::error::Error;
+
+use super::{PoisonError, PoisonGuard, TryLockPoisonableError};
+
+impl<Guard> fmt::Debug for PoisonError<Guard> {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		f.debug_struct("PoisonError").finish_non_exhaustive()
+	}
+}
+
+impl<Guard> fmt::Display for PoisonError<Guard> {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		"poisoned lock: another task failed inside".fmt(f)
+	}
+}
+
+impl<Guard> Error for PoisonError<Guard> {}
+
+impl<'flag, 'key, G, Key> fmt::Debug for TryLockPoisonableError<'flag, 'key, G, Key> {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		match *self {
+			Self::Poisoned(..) => "Poisoned(..)".fmt(f),
+			Self::WouldBlock(_) => "WouldBlock".fmt(f),
+		}
+	}
+}
+
+impl<'flag, 'key, G, Key> fmt::Display for TryLockPoisonableError<'flag, 'key, G, Key> {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		match *self {
+			Self::Poisoned(..) => "poisoned lock: another task failed inside",
+			Self::WouldBlock(_) => "try_lock failed because the operation would block",
+		}
+		.fmt(f)
+	}
+}
+
+impl<'flag, 'key, G, Key> Error for TryLockPoisonableError<'flag, 'key, G, Key> {}
+
+impl<'flag, 'key, G, Key> From<PoisonError<PoisonGuard<'flag, 'key, G, Key>>>
+	for TryLockPoisonableError<'flag, 'key, G, Key>
+{
+	fn from(value: PoisonError<PoisonGuard<'flag, 'key, G, Key>>) -> Self {
+		Self::Poisoned(value)
+	}
+}