Basic scoped lock and guard implementations

1 files changed, 58 insertions, 0 deletions

diff --git a/src/iterator/consumed_guard.rs b/src/iterator/consumed_guard.rs
new file mode 100644
index 0000000..5331289
--- /dev/null
+++ b/src/iterator/consumed_guard.rs
@@ -0,0 +1,58 @@
+use std::fmt::{Debug, Display};
+use std::hash::Hash;
+use std::ops::{Deref, DerefMut};
+
+use crate::iterator::ConsumedIteratorGuard;
+
+#[mutants::skip] // hashing involves RNG and is hard to test
+#[cfg(not(tarpaulin_include))]
+impl<Guard: Hash, Key> Hash for ConsumedIteratorGuard<Guard, Key> {
+	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+		self.guard.hash(state)
+	}
+}
+
+// No implementations of Eq, PartialEq, PartialOrd, or Ord
+// You can't implement both PartialEq<Self> and PartialEq<T>
+// It's easier to just implement neither and ask users to dereference
+// This is less of a problem when using the scoped lock API
+
+#[mutants::skip]
+#[cfg(not(tarpaulin_include))]
+impl<Guard: Debug, Key> Debug for ConsumedIteratorGuard<Guard, Key> {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		Debug::fmt(&**self, f)
+	}
+}
+
+impl<Guard: Display, Key> Display for ConsumedIteratorGuard<Guard, Key> {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		Display::fmt(&**self, f)
+	}
+}
+
+impl<Guard, Key> Deref for ConsumedIteratorGuard<Guard, Key> {
+	type Target = Guard;
+
+	fn deref(&self) -> &Self::Target {
+		&self.guard
+	}
+}
+
+impl<Guard, Key> DerefMut for ConsumedIteratorGuard<Guard, Key> {
+	fn deref_mut(&mut self) -> &mut Self::Target {
+		&mut self.guard
+	}
+}
+
+impl<Guard, Key> AsRef<Guard> for ConsumedIteratorGuard<Guard, Key> {
+	fn as_ref(&self) -> &Guard {
+		&self.guard
+	}
+}
+
+impl<Guard, Key> AsMut<Guard> for ConsumedIteratorGuard<Guard, Key> {
+	fn as_mut(&mut self) -> &mut Guard {
+		&mut self.guard
+	}
+}