[NF] Minor fixes for type attributes.

- Set correct basetype in ClassTree.instantiate for derived classes.
- Fixed scalarization of non-each class modifiers on array components.
- Moved subscript count check from the instantiation to the typing,
  since dimensions from types aren't added to components until then.
- Use correct parent node when type checking type attributes.

Belonging to [master]:
  - OpenModelica/OMCompiler#2384
  - OpenModelica/OpenModelica-testsuite#929

Compiler/NFFrontEnd/NFClassTree.mo

@@ -613,9 +613,11 @@ public
           then
             ();
 
-        case Class.EXPANDED_DERIVED()
+        case Class.EXPANDED_DERIVED(baseClass = node)
           algorithm
-            (node, _, classCount, compCount) := instantiate(cls.baseClass);
+            node := InstNode.setNodeType(
+              InstNodeType.BASE_CLASS(clsNode, InstNode.definition(node)), node);
+            (node, _, classCount, compCount) := instantiate(node);
             cls.baseClass := node;
           then
             ();

Compiler/NFFrontEnd/NFExpression.mo

@@ -2733,6 +2733,30 @@ public
     Expression.ARRAY(elements = elements) := array;
   end arrayElements;
 
+  function arrayScalarElements
+    input Expression exp;
+    output list<Expression> elements;
+  algorithm
+    elements := listReverseInPlace(arrayScalarElements_impl(exp, {}));
+  end arrayScalarElements;
+
+  function arrayScalarElements_impl
+    input Expression exp;
+    input output list<Expression> elements;
+  algorithm
+    elements := match exp
+      case ARRAY()
+        algorithm
+          for e in exp.elements loop
+            elements := arrayScalarElements_impl(e, elements);
+          end for;
+        then
+          elements;
+
+      else exp :: elements;
+    end match;
+  end arrayScalarElements_impl;
+
   function hasArrayCall
     "Returns true if the given expression contains a function call that returns
      an array, otherwise false."

Compiler/NFFrontEnd/NFExpressionIterator.mo

@@ -34,6 +34,7 @@ protected
   import ExpressionIterator = NFExpressionIterator;
   import ComponentRef = NFComponentRef;
   import BindingOrigin = NFBindingOrigin;
+  import NFInstNode.InstNode;
 
 public
   import Expression = NFExpression;
@@ -55,6 +56,11 @@ public
   record NONE_ITERATOR
   end NONE_ITERATOR;
 
+  record REPEAT_ITERATOR
+    list<Expression> current;
+    list<Expression> all;
+  end REPEAT_ITERATOR;
+
   function fromExp
     input Expression exp;
     output ExpressionIterator iterator;
@@ -108,9 +114,17 @@ public
     output ExpressionIterator iterator;
   algorithm
     iterator := match binding
+      local
+        list<Expression> expl;
+
+      case Binding.TYPED_BINDING() guard BindingOrigin.isFromClass(binding.origin)
+        algorithm
+          expl := Expression.arrayScalarElements(binding.bindingExp);
+        then
+          if listLength(expl) == 1 then EACH_ITERATOR(listHead(expl)) else REPEAT_ITERATOR(expl, expl);
+
       case Binding.TYPED_BINDING()
-        then if Binding.isEach(binding) or BindingOrigin.isFromClass(binding.origin) then
-          EACH_ITERATOR(binding.bindingExp) else fromExp(binding.bindingExp);
+        then if binding.isEach then EACH_ITERATOR(binding.bindingExp) else fromExp(binding.bindingExp);
 
       case Binding.FLAT_BINDING()
         then SCALAR_ITERATOR(binding.bindingExp);
@@ -126,6 +140,7 @@ public
       case SCALAR_ITERATOR() then true;
       case EACH_ITERATOR() then true;
       case NONE_ITERATOR() then false;
+      case REPEAT_ITERATOR() then true;
     end match;
   end hasNext;
 
@@ -155,6 +170,17 @@ public
         then (NONE_ITERATOR(), iterator.exp);
 
       case EACH_ITERATOR() then (iterator, iterator.exp);
+
+      case REPEAT_ITERATOR(rest, arr)
+        algorithm
+          if not listEmpty(rest) then
+            next :: rest := rest;
+          else
+            next :: rest := arr;
+          end if;
+        then
+          (REPEAT_ITERATOR(rest, arr), next);
+
     end match;
   end next;
 

Compiler/NFFrontEnd/NFInst.mo

@@ -2056,10 +2056,16 @@ algorithm
 
           crefExp := match comp
             case Component.ITERATOR()
-              then Expression.CREF(Type.UNKNOWN(), ComponentRef.makeIterator(cref.node, comp.ty));
+              algorithm
+                checkUnsubscriptableCref(cref, cref.subscripts, info);
+              then
+                Expression.CREF(Type.UNKNOWN(), ComponentRef.makeIterator(cref.node, comp.ty));
 
             case Component.ENUM_LITERAL()
-              then comp.literal;
+              algorithm
+                checkUnsubscriptableCref(cref, cref.subscripts, info);
+              then
+                comp.literal;
 
             case Component.TYPE_ATTRIBUTE()
               algorithm
@@ -2078,6 +2084,7 @@ algorithm
 
           end match;
         else
+          checkUnsubscriptableCref(cref, cref.subscripts, info);
           ty := InstNode.getType(cref.node);
 
           ty := match ty
@@ -2101,6 +2108,18 @@ algorithm
   end match;
 end instCref;
 
+function checkUnsubscriptableCref
+  input ComponentRef cref;
+  input list<Subscript> subscripts;
+  input SourceInfo info;
+algorithm
+  if not listEmpty(subscripts) then
+    Error.addSourceMessage(Error.WRONG_NUMBER_OF_SUBSCRIPTS,
+      {ComponentRef.toString(cref), String(listLength(subscripts)), "0"}, info);
+    fail();
+  end if;
+end checkUnsubscriptableCref;
+
 function instCrefSubscripts
   input output ComponentRef cref;
   input InstNode scope;
@@ -2109,19 +2128,10 @@ algorithm
   () := match cref
     local
       ComponentRef rest_cr;
-      Integer dims;
 
     case ComponentRef.CREF()
       algorithm
         if not listEmpty(cref.subscripts) then
-          dims := InstNode.countDimensions(cref.node, 1);
-
-          if listLength(cref.subscripts) > dims then
-            Error.addSourceMessage(Error.WRONG_NUMBER_OF_SUBSCRIPTS,
-              {ComponentRef.toString(cref), String(listLength(cref.subscripts)), String(dims)}, info);
-            fail();
-          end if;
-
           cref.subscripts := list(instSubscript(s, scope, info) for s in cref.subscripts);
         end if;
 

Compiler/NFFrontEnd/NFTyping.mo

@@ -862,7 +862,7 @@ algorithm
         if isSome(binding_origin.node) then
           SOME(mod_parent) := binding_origin.node;
         else
-          mod_parent := component;
+          mod_parent := InstNode.getDerivedNode(component);
         end if;
 
         // Type and type check the attribute.
@@ -1348,6 +1348,12 @@ algorithm
   next_origin := intBitOr(origin, ExpOrigin.SUBSCRIPT);
   i := 1;
 
+  if listLength(subscripts) > listLength(dims) then
+    Error.addSourceMessage(Error.WRONG_NUMBER_OF_SUBSCRIPTS,
+      {ComponentRef.toString(cref), String(listLength(subscripts)), String(listLength(dims))}, info);
+    fail();
+  end if;
+
   for s in subscripts loop
     dim :: dims := dims;
     (sub, var) := typeSubscript(s, dim, cref, i, next_origin, info);