1 files changed, 20 insertions, 0 deletions
diff --git a/third_party/rust/unic-langid-impl/src/parser/errors.rs b/third_party/rust/unic-langid-impl/src/parser/errors.rs
new file mode 100644
index 0000000000..acc36bff96
--- /dev/null
+++ b/third_party/rust/unic-langid-impl/src/parser/errors.rs
@@ -0,0 +1,20 @@
+use std::error::Error;
+use std::fmt::{self, Display};
+
+#[derive(Debug, PartialEq)]
+pub enum ParserError {
+    InvalidLanguage,
+    InvalidSubtag,
+}
+
+impl Error for ParserError {}
+
+impl Display for ParserError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let value = match self {
+            ParserError::InvalidLanguage => "The given language subtag is invalid",
+            ParserError::InvalidSubtag => "Invalid subtag",
+        };
+        f.write_str(value)
+    }
+}