1 files changed, 10 insertions, 0 deletions
diff --git a/ast.h b/ast.h
index c0b0d90..700fc80 100644
--- a/ast.h
+++ b/ast.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <functional>
 #include <iostream>
 #include <string>
 #include <vector>
@@ -82,4 +83,13 @@ public:
 	static AST makeNative(const Native &native);
 };
 
+namespace std {
+	template <>
+	struct hash<AST::Type>{
+		size_t operator()(const AST::Type &type) const {
+			return (size_t)type;
+		}
+	};
+}
+
 ostream& operator<<(ostream &os,const AST &ast);