1 files changed, 41 insertions, 0 deletions
diff --git a/src/failable/ops/bool.rs b/src/failable/ops/bool.rs
new file mode 100644
index 0000000..aef1077
--- /dev/null
+++ b/src/failable/ops/bool.rs
@@ -0,0 +1,41 @@
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+
+//! FailableBool Filter implementation, so we can insert this in filter construction
+//!
+//! Will be automatically included when incluing `filter::Filter`, so importing this module
+//! shouldn't be necessary.
+//!
+
+use std::error::Error;
+use failable::filter::FailableFilter;
+
+#[must_use = "filters are lazy and do nothing unless consumed"]
+#[derive(Clone)]
+pub struct FailableBool(bool);
+
+impl FailableBool {
+
+    pub fn new(b: bool) -> FailableBool {
+        FailableBool(b)
+    }
+
+}
+
+impl From<bool> for FailableBool {
+
+    fn from(b: bool) -> FailableBool {
+        FailableBool::new(b)
+    }
+
+}
+
+impl<N, E: Error> FailableFilter<N, E> for FailableBool {
+    fn filter(&self, _: &N) -> Result<bool, E> {
+        Ok(self.0)
+    }
+}
+