1 files changed, 68 insertions, 0 deletions
diff --git a/lib/domain/libimagtodo/src/priority.rs b/lib/domain/libimagtodo/src/priority.rs
new file mode 100644
index 00000000..e612093d
--- /dev/null
+++ b/lib/domain/libimagtodo/src/priority.rs
@@ -0,0 +1,68 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015-2019 Matthias Beyer <mail@beyermatthias.de> and contributors
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+use std::cmp::PartialOrd;
+use std::cmp::Ordering;
+
+#[derive(Serialize, Deserialize, Clone, Debug, Eq, PartialEq)]
+pub enum Priority {
+    #[serde(rename = "h")]
+    High,
+
+    #[serde(rename = "m")]
+    Medium,
+
+    #[serde(rename = "l")]
+    Low,
+}
+
+impl Priority {
+    pub fn as_str(&self) -> &str {
+        match self {
+            Priority::High => "h",
+            Priority::Medium => "m",
+            Priority::Low => "l",
+        }
+    }
+}
+
+impl PartialOrd for Priority {
+    fn partial_cmp(&self, other: &Priority) -> Option<Ordering> {
+        Some(match (self, other) {
+            (Priority::Low,    Priority::Low)    => Ordering::Equal,
+            (Priority::Low,    Priority::Medium) => Ordering::Less,
+            (Priority::Low,    Priority::High)   => Ordering::Less,
+
+            (Priority::Medium, Priority::Low)    => Ordering::Greater,
+            (Priority::Medium, Priority::Medium) => Ordering::Equal,
+            (Priority::Medium, Priority::High)   => Ordering::Less,
+
+            (Priority::High,   Priority::Low)    => Ordering::Greater,
+            (Priority::High,   Priority::Medium) => Ordering::Greater,
+            (Priority::High,   Priority::High)   => Ordering::Equal,
+        })
+    }
+}
+
+impl Ord for Priority {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.partial_cmp(&other).unwrap() // save by impl above
+    }
+}
+