add message feature cases.

Author: lfkdsk

pkg/front_end/messages.status

@@ -369,9 +369,11 @@ ForInLoopNotAssignable/part_wrapped_statement: Fail
 ForInLoopNotAssignable/statement: Fail
 ForInLoopTypeNotIterablePartNullability/example: Fail # Cannot occur but needed for symmetry with ForInLoopTypeNotIterableNullability
 ForInLoopWithConstVariable/example: Fail
+FunctionAsTypeParameter/analyzerCode: Fail
 FunctionTypeDefaultValue/example: Fail
 FunctionTypedParameterVar/part_wrapped_script1: Fail
 FunctionTypedParameterVar/script1: Fail
+FunctionUsedAsDec/analyzerCode: Fail
 GeneratorReturnsValue/example: Fail
 GetterNotFound/example: Fail
 GetterWithFormals/example: Fail

pkg/front_end/messages.yaml

@@ -1799,9 +1799,17 @@ NotAPrefixInTypeAnnotation:
 
 FunctionUsedAsDec:
   template: "'Function' is a built-in identifier, could not used as a #name name."
+  script:
+    - class Function {}
+    - extension Function on int {}
+    - mixin Function {}
 
 FunctionAsTypeParameter:
   template: "'Function' is a built-in identifier, could not used as a type identifier."
+  script:
+    - class C<Function> {}
+    - mixin A<Function> {}
+    - extension A<Function> on List<Function> {}
 
 UnresolvedPrefixInTypeAnnotation:
   template: "'#name.#name2' can't be used as a type because '#name' isn't defined."