Hide parent function name in name of closurized function to user.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 4608 matching lines @@
   const String& str = String::Handle(name());
   return IdentifierPrettyName(str);
 }
 
 
 RawString* Function::QualifiedUserVisibleName() const {
   String& tmp = String::Handle();
   const Class& cls = Class::Handle(Owner());
 
   if (IsClosureFunction()) {
-    if (IsLocalFunction()) {
+    if (IsLocalFunction() && !IsImplicitClosureFunction()) {
       const Function& parent = Function::Handle(parent_function());
       tmp = parent.QualifiedUserVisibleName();
     } else {
       return UserVisibleName();
     }
   } else {
     if (cls.IsTopLevel()) {
       return UserVisibleName();
     } else {
       tmp = cls.UserVisibleName();
@@ skipping 8642 matching lines @@
 
 
 const char* ExternalTypedData::ToCString() const {
   return "ExternalTypedData";
 }
 
 
 const char* Closure::ToCString(const Instance& closure) {
   const Function& fun = Function::Handle(Closure::function(closure));
   const bool is_implicit_closure = fun.IsImplicitClosureFunction();
-  const char* fun_sig = String::Handle(fun.Signature()).ToCString();
+  const char* fun_sig = String::Handle(fun.UserVisibleSignature()).ToCString();
   const char* from = is_implicit_closure ? " from " : "";
   const char* fun_desc = is_implicit_closure ? fun.ToCString() : "";
   const char* format = "Closure: %s%s%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, fun_sig, from, fun_desc) + 1;
   char* chars = Isolate::Current()->current_zone()->Alloc<char>(len);
   OS::SNPrint(chars, len, format, fun_sig, from, fun_desc);
   return chars;
 }
 
 
@@ skipping 362 matching lines @@
                                     space);
   return reinterpret_cast<RawWeakProperty*>(raw);
 }
 
 
 const char* WeakProperty::ToCString() const {
   return "_WeakProperty";
 }
 
 }  // namespace dart