refactor: type

src/ty/common.rs

@@ -0,0 +1,26 @@
+use std::ops::Deref;
+
+use ecow::EcoString;
+use derive_more::Constructor;
+
+#[derive(Clone, Debug, PartialEq, Constructor)]
+pub struct Catchable {
+    msg: Option<String>,
+}
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Constructor)]
+pub struct Symbol(EcoString);
+
+impl<T: Into<EcoString>> From<T> for Symbol {
+    fn from(value: T) -> Self {
+        Symbol(value.into())
+    }
+}
+
+impl Deref for Symbol {
+    type Target = str;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+