---

src/compiler/types.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+from dataclasses import dataclass
+
+class Int:
+  pass
+
+class Bool:
+  pass
+
+class Unit:
+  pass
+
+Int_Instance = Int()
+Bool_Instance = Bool()
+Unit_Instance = Unit()
+
+class Any(Int, Bool, Unit):
+  pass
+
+Any_Instance = Any()
+
+type Type = Int | Bool | Unit | FunType
+
+ParamsType = Type | list[Type | list['ParamsType']]
+
+@dataclass
+class FunType:
+  params: ParamsType
+  result: Type