feat: function (WIP)

src/ty/internal/func.rs

@@ -1,5 +1,6 @@
 use ecow::EcoString;
 
+use crate::ty::internal::Value;
 use crate::bytecode::{OpCodes, ThunkIdx};
 
 #[derive(Debug, Clone)]
@@ -18,6 +19,12 @@ pub struct Func {
     pub opcodes: OpCodes
 }
 
+impl Func {
+    pub fn call(self, _arg: Value) -> Value {
+        todo!()
+    }
+}
+
 impl PartialEq for Func {
     fn eq(&self, _: &Self) -> bool {
         false