Produce run-time error when type parameters are accessed from static context.

sdk/lib/_internal/compiler/implementation/typechecker.dart

Index: sdk/lib/_internal/compiler/implementation/typechecker.dart
diff --git a/sdk/lib/_internal/compiler/implementation/typechecker.dart b/sdk/lib/_internal/compiler/implementation/typechecker.dart
index 9572643066b468c27a90d0a62e17b7200f0a6716..670e83b714cd74aea779e41d250005f53a8ebebc 100644
--- a/sdk/lib/_internal/compiler/implementation/typechecker.dart
+++ b/sdk/lib/_internal/compiler/implementation/typechecker.dart
@@ -36,6 +36,7 @@ class TypeKind {
   static const TypeKind STATEMENT = const TypeKind('statement');
   static const TypeKind TYPEDEF = const TypeKind('typedef');
   static const TypeKind TYPE_VARIABLE = const TypeKind('type variable');
+  static const TypeKind MALFORMED_TYPE = const TypeKind('malformed');
   static const TypeKind VOID = const TypeKind('void');
 
   String toString() => id;
@@ -150,6 +151,24 @@ class VoidType extends DartType {
   String toString() => name.slowToString();
 }
 
+class MalformedType extends DartType {
+  const MalformedType(this.element);
+
+  TypeKind get kind => TypeKind.MALFORMED_TYPE;
+
+  SourceString get name => element.name;
+
+  final MalformedTypeElement element;
+
+  DartType unalias(Compiler compiler) => this;
+
+  int get hashCode => 1733;
+
+  bool operator ==(other) => other is MalformedType;

[ngeoffray, 2012/11/27 09:37:35]

Not checking if elements are equal is kind of strange. Could you add a comment?

[aam-me, 2012/11/28 01:49:47]

Good point. I used VoidType above as a template.

But it makes sense to change it to something like this:
  bool operator ==(other) {
    if (other is !MalformedType) return false;
    if (!identical(element, other.element)) return false;
    return true;
  }

+
+  String toString() => name.slowToString();
+}
+
 class InterfaceType extends DartType {
   final Element element;
   final Link<DartType> arguments;
@@ -321,6 +340,8 @@ class Types {
 
     if (t is VoidType) {
       return false;
+    } else if (t is MalformedType) {
+      return false;
     } else if (t is InterfaceType) {
       if (s is !InterfaceType) return false;
       ClassElement tc = t.element;