small update type check

diff --git a/gen.icl b/gen.icl
index b6e22d6..25a4e6f 100644 (file)
--- a/gen.icl
+++ b/gen.icl
@@ -350,18 +350,18 @@ instance g Stmt where
 //and leaves the heap adress to write to on the stack
 followFs :: [FieldSelector] -> Gen()
 followFs [] = tell []
-followFs [FieldHd:fs] = tell [Instr "ldc" [Lit 1] "select hd"
+followFs [FieldHd:fs]   = tell [Instr "ldc" [Lit 1] "select hd"
                              ,Instr "sub" [] "select hd"]
-                        >>| followFs fs
-followFs [FieldTl] = tell []
-followFs [FieldTl:fs] = tell [Instr "lda" [Lit 0] ""]
-                        >>| followFs fs
-followFs [FieldFst:fs] = tell [Instr "ldc" [Lit 1] "select fst"
+                            >>| followFs fs
+followFs [FieldTl]      = tell []
+followFs [FieldTl:fs]   = tell [Instr "lda" [Lit 0] ""]
+                            >>| followFs fs
+followFs [FieldFst:fs]  = tell [Instr "ldc" [Lit 1] "select fst"
                                 ,Instr "sub" [] "select fst"]
                             >>| followFs fs
-followFs [FieldSnd:fs] = tell [Instr "lda" [Lit 0] ""]
-                        >>| followFs fs
-followFs [FieldSnd] = tell []
+followFs [FieldSnd:fs]  = tell [Instr "lda" [Lit 0] ""]
+                            >>| followFs fs
+followFs [FieldSnd]     = tell []
 
 foldVarDecl :: Int VarDecl -> Gen Int
 foldVarDecl x (VarDecl _ mt k e) = g e 

diff --git a/sem.icl b/sem.icl
index 8ca24cf..448c67e 100644 (file)
--- a/sem.icl
+++ b/sem.icl
@@ -202,7 +202,7 @@ unify (ta1->>ta2) (tb1->>tb2) = unify ta1 tb1 >>= \s1->
                                 unify (subst s1 ta2) (subst s1 tb2) >>= \s2->
                                 Right $ compose s2 s1
 unify (TupleType (ta1,ta2)) (TupleType (tb1,tb2)) = unify ta1 tb1 >>= \s1->
-                                                    unify ta2 tb2 >>= \s2->
+                                                    unify (subst s1 ta2) (subst s1 tb2) >>= \s2->
                                                     Right $ compose s2 s1
 unify (ListType t1) (ListType t2) = unify t1 t2
 unify (FuncType t1) (FuncType t2) = unify t1 t2