X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;ds=sidebyside;f=sem.dcl;h=a5705977b29780197eb20ccbb152a641a1422df9;hb=c5fb28639ae923d9b55f5832e45186911e610991;hp=0d4a7d6ad8f703d14239f1b960aa9341c94e4590;hpb=cba53fea01b27f46668e9025f8b04ce7a85e62d8;p=cc1516.git

diff --git a/sem.dcl b/sem.dcl
index 0d4a7d6..a570597 100644
--- a/sem.dcl
+++ b/sem.dcl
@@ -2,19 +2,15 @@ definition module sem
 
 import qualified Data.Map as Map
 from Data.Either import :: Either
-from AST import :: AST, :: Pos, :: Type, :: FieldSelector
+from AST import :: AST, :: Pos, :: Type, :: FieldSelector, :: Op2
 from StdOverloaded import class toString
 
 :: SemError 
-	= ParseError Pos String 
-	| UnifyError Pos Type Type 
-    | FieldSelectorError Pos Type FieldSelector 
-    | UndeclaredVariableError Pos String
-	| Error String
 :: Gamma
 :: SemOutput :== Either [SemError] (AST, Gamma)
+:: Constraints :== [(Type, Type)]
 
 instance toString SemError
 instance toString Gamma
 
-sem :: AST -> SemOutput
+sem :: AST -> Either [SemError] (AST, Gamma)