X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=sem.dcl;h=584deb567792c7e75b67360be3fab9646c8bd3a6;hb=6d70a636ed3b4573c4c81ba068ae2b46523c9465;hp=5c01ba0c5dcbec8ecb3394e5e9a157ce779674ac;hpb=df7fbaaf21817473f51525a2c8f03b0a5a37b823;p=cc1516.git

diff --git a/sem.dcl b/sem.dcl
index 5c01ba0..584deb5 100644
--- a/sem.dcl
+++ b/sem.dcl
@@ -1,15 +1,22 @@
 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
+    | ArgumentMisMatchError Pos String
 	| Error String
-:: SemOutput :== Either [SemError] AST
-
+:: Gamma
+:: SemOutput :== Either [SemError] (AST, Gamma)
 
 instance toString SemError
+instance toString Gamma
 
 sem :: AST -> SemOutput