X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=gen.icl;h=bf3d7c45d61d2030d982ab3b392bfae857bc5fab;hb=9dcc80e7a580836c10157cd742eb1c805ef7311b;hp=d139804acf681111aa45a4279e72d4fc7bc3de00;hpb=f081c2c5e248331eb6e2f090f4afe818fd8259eb;p=cc1516.git

diff --git a/gen.icl b/gen.icl
index d139804..bf3d7c4 100644
--- a/gen.icl
+++ b/gen.icl
@@ -40,10 +40,12 @@ labelStream :: [Label]
 labelStream = ["lbl_" +++ toString i\\i<-[1..]]
 
 defaultAddressBook :: Addressbook 
-defaultAddressBook = extend "print" (LAB "print")
-                        $ extend "read" (LAB "read")
-                        $ extend "isEmpty" (LAB "isEmpty")
-                        'Map'.newMap
+defaultAddressBook = extend "1printint" (LAB "1printint")
+	$ extend "1printchar" (LAB "1printchar")
+	$ extend "1readchar" (LAB "1readchar")
+	$ extend "1readint" (LAB "1readint")
+	$ extend "isEmpty" (LAB "isempty")
+	'Map'.newMap
 
 gen :: AST -> Either String String
 gen (AST fds) = case evalRWST prog () (defaultAddressBook, labelStream) of
@@ -57,18 +59,31 @@ gen (AST fds) = case evalRWST prog () (defaultAddressBook, labelStream) of
             >>| mapM_ g fds
 
 programContext :: SSMProgram
-programContext =    [Lab "print" //there is no actual IO in SSM
+programContext =    [Lab "1printint"
                     ,Instr "link" [Lit 0] ""
+                    ,Instr "ldl" [Lit -2] "load first argument"
+					,Instr "trap" [Lit 0] "print int"
                     ,Instr "unlink" [] ""
                     ,Instr "ret" [] ""
-                    ,Lab "read" //there is no actual IO in SSM
+					,Lab "1printchar"
                     ,Instr "link" [Lit 0] ""
-                    ,Instr "ldc" [Lit 0] ""
-                    ,Instr "sth" [] ""
+                    ,Instr "ldl" [Lit -2] "load first argument"
+					,Instr "trap" [Lit 1] "print char"
+                    ,Instr "unlink" [] ""
+                    ,Instr "ret" [] ""
+                    ,Lab "1readint"
+                    ,Instr "link" [Lit 0] ""
+					,Instr "trap" [Lit 10] "read int"
                     ,Instr "str" [Raw "RR"] ""
                     ,Instr "unlink" [] ""
                     ,Instr "ret" [] ""
-                    ,Lab "isEmpty"
+                    ,Lab "1readchar"
+                    ,Instr "link" [Lit 0] ""
+					,Instr "trap" [Lit 11] "read char"
+                    ,Instr "str" [Raw "RR"] ""
+                    ,Instr "unlink" [] ""
+                    ,Instr "ret" [] ""
+                    ,Lab "isempty"
                     ,Instr "link" [Lit 0] ""
                     ,Instr "ldl" [Lit -2] "load prt to list"
                     ,Instr "lda" [Lit 0] "derefrence ptr"
@@ -119,6 +134,12 @@ instance g Op2 where
     		    BiOr = "or"
     		    BiCons = abort "Shit, Cons, how to deal with this?"
 
+instance g FieldSelector where
+	g FieldFst = tell [Instr "lda" [Lit 0] "fst"]
+	g FieldSnd = tell [Instr "lda" [Lit 1] "snd"]
+	g FieldHd = tell [Instr "lda" [Lit -1] "hd"]
+	g FieldTl = tell [Instr "lda" [Lit 0] "tl"]
+
 instance g Expr where
     g (IntExpr _ i) = tell [Instr "ldc" [Lit i] ""]
     g (CharExpr _ c) = tell [Instr "ldc" [Lit (toInt c)] ""]
@@ -137,10 +158,8 @@ instance g Expr where
 		>>| tell [Instr "sth" [] ""]
 		>>| tell [Instr "ajs" [Lit -1] ""]
     g (VarExpr _ (VarDef k fs)) = getAdressbook >>= \ab->case 'Map'.get k ab of
-		Nothing = liftT (Left $ Error "PANIC: undefined variable")
-		Just (ADDR t) = tell [Instr "ldl" [Lit t] ""]
-		Just (LAB t) = liftT (Left $ Error "PANIC: variable and function name clash")
-		//load k >>= \instr-> tell [instr] //note: pure is pure for list, i.e. []
+		Just (ADDR t) = tell [Instr "ldl" [Lit t] ""] >>| mapM_ g fs >>| pure ()
+		_ = liftT (Left $ Error "PANIC: variable and function name clash")
     g (FunExpr _ k es fs) = 
 		mapM_ g es
 		>>| jump "bsr" k
@@ -178,10 +197,11 @@ instance g Stmt where
             Nothing = liftT (Left $ Error $ concat ["PANIC: ", k, " not found as var"])
             Just (LAB t) = liftT (Left $ Error $ "PANIC: cannot assign to function")
             Just (ADDR t) = tell [Instr "stl" [Lit t] ""]
-    g (FunStmt k es) = mapM_ g es 
+    g (FunStmt k es fs) = mapM_ g es 
         >>| jump "bsr" k
         >>| mapM_ (const $ tell [Instr "ajs" [Lit -1] ""]) es //clean up args
-        >>| pure ()
+        >>| mapM_ g fs
+		>>| pure ()
     g (ReturnStmt Nothing) = tell [Instr "unlink" [] ""]
 		>>| tell [Instr "ret" [] ""]
     g (ReturnStmt (Just e)) = g e