X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=AST.dcl;h=3a61b546b744a0f093eecfc903627ae7d91249f3;hb=6d70a636ed3b4573c4c81ba068ae2b46523c9465;hp=1e241dd4068fe60f4f19d6082ee256aaf6bee4b2;hpb=77b19906f627f79a62445281bbc54a8eb584e0d1;p=cc1516.git

diff --git a/AST.dcl b/AST.dcl
index 1e241dd..3a61b54 100644
--- a/AST.dcl
+++ b/AST.dcl
@@ -1,7 +1,7 @@
 definition module AST
 
 from Data.Maybe import :: Maybe
-from StdOverloaded import class toString
+from StdOverloaded import class toString, class ==
 
 :: Pos = {line :: Int, col :: Int}
 :: AST = AST [VarDecl] [FunDecl]
@@ -9,7 +9,7 @@ from StdOverloaded import class toString
 :: Type 
 	= TupleType (Type, Type)
 	| ListType Type
-	| IdType String
+	| IdType String 
 	| IntType 
 	| BoolType
 	| CharType
@@ -41,3 +41,8 @@ from StdOverloaded import class toString
 	| ReturnStmt (Maybe Expr)
 
 instance toString AST
+instance toString Type
+instance toString Pos
+instance toString Op2
+instance == Op2
+instance toString FieldSelector