X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=sem.dcl;h=e981361a44e0f6f41e100c6788fccc497caacff2;hb=a8348a333a567e5a469d1e5f8ec6c3dafc051c91;hp=5c01ba0c5dcbec8ecb3394e5e9a157ce779674ac;hpb=8c4ec1c3287d6c6ddefd22ef608a4d97693e7e85;p=cc1516.git

diff --git a/sem.dcl b/sem.dcl
index 5c01ba0..e981361 100644
--- a/sem.dcl
+++ b/sem.dcl
@@ -1,15 +1,21 @@
 definition module sem
 
+import qualified Data.Map as Map
 from Data.Either import :: Either
-from AST import :: AST, :: Pos, :: Type
+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 
+	| OperatorError Pos Op2 Type
+    | UndeclaredVariableError Pos String
 	| Error String
-:: SemOutput :== Either [SemError] AST
-
+:: Gamma
+:: SemOutput :== Either [SemError] (AST, Gamma)
 
 instance toString SemError
+instance toString Gamma
 
 sem :: AST -> SemOutput