add function dictionary 1func

diff --git a/examples/high.spl b/examples/high.spl
index 65f8434..af750ab 100644 (file)
--- a/examples/high.spl
+++ b/examples/high.spl
@@ -2,24 +2,8 @@ plus(x, y) {
        return x + y;
 }
 
-run(x) {
-       x();
-       return;
-}
-
-helloworld() {
-       print('h':'e':'l':'l':'o':' ':'w':'o':'r':'l':'d':'!':[]);
-       return;
-}
-
 main (){
-       var abc = "hello world";
-       var a = read;
-       var b = read();
-       var c = plus;
-       var d = plus(1);
-       var e = plus(1, 2);
-       var f = d(41);
-       run(helloworld);
+//     var c = plus;
+//     var d = plus(1);
        return 5;
 }

diff --git a/gen.icl b/gen.icl
index 6020d03..ae1c829 100644 (file)
--- a/gen.icl
+++ b/gen.icl
@@ -33,33 +33,55 @@ FALSE :== 0
 :: SSMProgram :== [Instr]
 :: GenError = Error String
 :: Addressbook :== 'Map'.Map String Address
-:: Address = LAB String Int | ADDR Int
+:: Address = LAB String Int Int | ADDR Int
 :: Gen a :== RWST () SSMProgram (Addressbook, [Label]) (Either GenError) a
 
 labelStream :: [Label]
 labelStream = ["lbl_" +++ toString i\\i<-[1..]]
 
-defaultAddressBook :: Addressbook 
-defaultAddressBook = extend "1printint" (LAB "1printint" 1)
-       $ extend "1printchar" (LAB "1printchar" 1)
-       $ extend "read" (LAB "read" 0)
-       $ extend "1readint" (LAB "1readint" 0)
-       $ extend "isEmpty" (LAB "isempty" 1)
-       'Map'.newMap
+defaultAddressBook :: [FunDecl] -> Addressbook 
+defaultAddressBook fd = extend "1printint" (LAB "1printint" 1 0)
+       $ extend "1printchar" (LAB "1printchar" 1 1)
+       $ extend "read" (LAB "read" 0 2)
+       $ extend "1readint" (LAB "1readint" 0 3)
+       $ extend "isEmpty" (LAB "isempty" 1 4)
+       $ addFuncs fd 5
+       where
+               addFuncs [] _ = 'Map'.newMap
+               addFuncs [(FunDecl _ k args _ _ _):xs] n =
+                       extend k (LAB k (length args) n) $ addFuncs xs (n+1)
 
 gen :: AST -> Either String String
-gen (AST fds) = case evalRWST prog () (defaultAddressBook, labelStream) of
+gen (AST fds) = case evalRWST prog () (defaultAddressBook fds, labelStream) of
             Left (Error e) = Left e
             Right (_, p) = Right $ toString p
     where
         prog = tell [
                        Instr "bsr" [L "main"] "",
                        Instr "halt" [] ""
-                       ] >>| tell programContext
+                       ] >>| tell (programContext fds)
             >>| mapM_ g fds
 
-programContext :: SSMProgram
-programContext =    [Lab "1printint"
+programContext :: [FunDecl] -> SSMProgram
+programContext x = [Lab "1func"
+                               ,Instr "link" [Lit 0] ""
+                               :fS ["1printint" ,"1printchar"
+                                       ,"read" ,"1readint"
+                                       ,"isEmpty":map (\(FunDecl _ k _ _ _ _)->k) x] 0] ++ 
+                               [Instr "unlink" [] ""
+                               ,Instr "ret" [] "":context]
+       where
+
+               fS :: [String] Int -> SSMProgram
+               fS [] _ = []
+               fS [k:xs] n = [
+                        Instr "ldl" [Lit -2] ""
+                       ,Instr "ldc" [Lit n] $ "branch to: " +++ k
+                       ,Instr "eq" [] ""
+                       ,Instr "brt" [L k] ""
+                       :fS xs $ n+1]
+               context :: SSMProgram
+               context =   [Lab "1printint"
                     ,Instr "link" [Lit 0] ""
                     ,Instr "ldl" [Lit -2] "load first argument"
                                        ,Instr "trap" [Lit 0] "print int"
@@ -71,12 +93,6 @@ programContext =    [Lab "1printint"
                                        ,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 "read"
                     ,Instr "link" [Lit 0] ""
                                        ,Instr "trap" [Lit 11] "read char"
@@ -162,7 +178,7 @@ instance g Expr where
                Just (ADDR t) = tell [Instr "ldl" [Lit t] ""] >>| mapM_ g fs >>| pure ()
                _ = liftT (Left $ Error "Higher order functions not implemented")
     g (FunExpr _ k es fs) = getAdressbook >>= \ab->case 'Map'.get k ab of
-               Just (LAB l arity) = if (arity <> (length es))
+               Just (LAB l arity _) = if (arity <> (length es))
                        (liftT $ Left $ Error "Higher order functions not implemented")
                        (       mapM_ g es
                                >>| jump "bsr" k
@@ -173,7 +189,7 @@ instance g Expr where
 jump :: String String -> Gen ()
 jump instr k = getAdressbook >>= \ab->case 'Map'.get k ab of
        Nothing = liftT (Left $ Error $ concat ["PANIC: ", k, " not found as function"])
-       Just (LAB t _) = tell [Instr instr [L t] (k +++"()")]
+       Just (LAB t _ _) = tell [Instr instr [L t] (k +++"()")]
        Just (ADDR t) = liftT (Left $ Error $ "PANIC: jump should go to label")
 
 instance g Stmt where
@@ -199,7 +215,7 @@ instance g Stmt where
     g (AssStmt (VarDef k fs) e) = 
         g e >>| getAdressbook >>= \ab->case 'Map'.get k ab of
             Nothing = liftT (Left $ Error $ concat ["PANIC: ", k, " not found as var"])
-            Just (LAB t _) = liftT (Left $ Error $ "PANIC: cannot assign to function")
+            Just (LAB t _ _) = liftT (Left $ Error $ "PANIC: cannot assign to function")
             Just (ADDR t) = tell [Instr "stl" [Lit t] ""]
     g (FunStmt k es fs) = mapM_ g es 
         >>| jump "bsr" k
@@ -224,7 +240,6 @@ addVars [x:xs] = \ab->extend x (ADDR (-2 - (length xs))) (addVars xs ab)
 instance g FunDecl where
     g (FunDecl _ k args _ vds stms) = 
         //varDecls can call the enclosing function, so first reserve a label for it 
-        updateAdressbook (extend k (LAB k (length args))) >>|
         getAdressbook >>= \oldMap ->
                updateAdressbook (addVars args) >>|
         tell [Lab k] >>|