revent

diff --git a/sem.icl b/sem.icl
index 4a3fbe5..31221ca 100644 (file)
--- a/sem.icl
+++ b/sem.icl
@@ -20,41 +20,10 @@ import AST
 from parse import :: ParserOutput, :: Error
 
 :: Gamma :== 'Map'.Map String Type
-:: Env a = Env (State Gamma (Either SemError a))
-
-instance Functor Env where
-    fmap f m = liftM f m
-
-instance Applicative Env where
-    (<*>) f g   = ap f g
-    pure  a     = Env $ pure $ Right a
-
-instance Alternative Env where
-    empty       = Env $ pure $ Left (Error "Undefined error")
-    (<|>) f g   = f >>= \ef -> g >>= \eg -> Env $ pure $ (ef <|> eg) //case ef of 
-        //Left e  = eg
-        //Right r = Right r
-
-instance Monad Env where
-    bind e f    = e >>= \ee -> Env $ pure $ case ee of
-        (Left e) = Left e
-        (Right r) = f r
+:: Env a :== (State Gamma (Either SemError a))
 
 get = state $ \s -> (s,s)
 
-instance toString SemError where
-    toString (ParseError p e) = concat [
-        toString p,"SemError: ParseError: ", e]
-    toString (Error e) = "SemError: " +++ e
-    toString (UnifyErrorStub t1 t2) = toString (UnifyError {line=0,col=0} t1 t2)
-    toString (UnifyError p t1 t2) = concat [
-        toString p,
-        "SemError: Cannot unify types. Expected: ",
-        toString t1, ". Given: ", toString t2]
-
-sem :: AST -> SemOutput
-sem x = undef
-/*
 putIdent :: String Type -> Env Void
 putIdent i t = gets ('Map'.get i) >>= \mt -> case mt of
     Nothing = pure <$> modify ('Map'.put i t)
@@ -62,6 +31,17 @@ putIdent i t = gets ('Map'.get i) >>= \mt -> case mt of
         Left e  = pure $ Left e
         Right t3 = pure <$> modify ('Map'.put i t3)
 
+instance toString SemError where
+       toString (ParseError p e) = concat [
+               toString p,"SemError: ParseError: ", e]
+       toString (Error e) = "SemError: " +++ e
+       toString (UnifyErrorStub t1 t2) = toString (UnifyError {line=0,col=0} t1
+t2)
+       toString (UnifyError p t1 t2) = concat [
+               toString p,
+               "SemError: Cannot unify types. Expected: ",
+               toString t1, ". Given: ", toString t2]
+
 sem :: AST -> SemOutput
 sem (AST vd fd)
 # (eithervds, gamma) = runState (mapM semVarDecl vd) 'Map'.newMap
@@ -102,7 +82,7 @@ typeExpr (Op2Expr p e1 BiTimes e2) = unify IntType e1 >>| unify IntType e2
 typeExpr (Op2Expr p e1 BiDivide e2) = unify IntType e1 >>| unify IntType e2
 typeExpr (Op2Expr p e1 BiMod e2) = unify IntType e1 >>| unify IntType e2
 //bool, char of int
-typeExpr (Op2Expr p e1 BiEquals e2) = undef
+typeExpr (Op2Expr p e1 BiEquals e2) = 
 typeExpr (Op2Expr p e1 BiUnEqual e2) = undef
 //char of int
 typeExpr (Op2Expr p e1 BiLesser e2) = undef
@@ -116,7 +96,8 @@ typeExpr (Op2Expr p e1 BiOr e2) = undef
 typeExpr (Op2Expr p e1 BiCons e2) = undef
 //typeExpr (FunExpr Pos FunCall) = undef
 //typeExpr (EmptyListExpr Pos) = undef
-//typeExpr (VarExpr Pos VarDef) = undef //when checking var-expr, be sure to put the infered type
+//typeExpr (VarExpr Pos VarDef) = undef //when checking var-expr, be sure to
+//put the infered type
                                         //in the context
 
 class unify a :: Type a -> Env Type
@@ -160,4 +141,3 @@ extrPos (BoolExpr p _) = p
 extrPos (FunExpr p _) = p
 extrPos (EmptyListExpr p) = p
 extrPos (TupleExpr p _) = p
-*/
\ No newline at end of file