1 files changed, 32 insertions, 0 deletions
diff --git a/dhall/src/api/traits/dynamic_type.rs b/dhall/src/api/traits/dynamic_type.rs
new file mode 100644
index 0000000..7763a28
--- /dev/null
+++ b/dhall/src/api/traits/dynamic_type.rs
@@ -0,0 +1,32 @@
+use crate::error::TypeError;
+use crate::phase::{Normalized, Type, Typed};
+use crate::traits::StaticType;
+use std::borrow::Cow;
+
+pub trait DynamicType {
+    fn get_type<'a>(&'a self) -> Result<Cow<'a, Type>, TypeError>;
+}
+
+impl<T: StaticType> DynamicType for T {
+    fn get_type<'a>(&'a self) -> Result<Cow<'a, Type>, TypeError> {
+        Ok(Cow::Owned(T::get_static_type()))
+    }
+}
+
+impl DynamicType for Type {
+    fn get_type(&self) -> Result<Cow<'_, Type>, TypeError> {
+        self.get_type()
+    }
+}
+
+impl DynamicType for Normalized {
+    fn get_type(&self) -> Result<Cow<'_, Type>, TypeError> {
+        self.0.get_type()
+    }
+}
+
+impl DynamicType for Typed {
+    fn get_type(&self) -> Result<Cow<'_, Type>, TypeError> {
+        self.get_type()
+    }
+}