Use symbols when looking up fields in a class

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, 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 "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "lib/stacktrace.h"
@@ skipping 4244 matching lines @@
   } else if (obj.IsType()) {
     if (!Type::Cast(obj).IsFinalized()) {
       return Api::NewError(
           "%s expects argument 'container' to be a fully resolved type.",
           CURRENT_FUNC);
     }
     // To access a static field we may need to use the Field or the
     // getter Function.
     Class& cls = Class::Handle(Z, Type::Cast(obj).type_class());
 
-    field = cls.LookupStaticField(field_name);
+    field = cls.LookupStaticFieldAllowPrivate(field_name);
     if (field.IsNull() || field.IsUninitialized()) {
       const String& getter_name =
           String::Handle(Z, Field::GetterName(field_name));
       getter = cls.LookupStaticFunctionAllowPrivate(getter_name);
     }
 
     if (!getter.IsNull()) {
       // Invoke the getter and return the result.
       return Api::NewHandle(
           T, DartEntry::InvokeFunction(getter, Object::empty_array()));
@@ skipping 109 matching lines @@
     if (!Type::Cast(obj).IsFinalized()) {
       return Api::NewError(
           "%s expects argument 'container' to be a fully resolved type.",
           CURRENT_FUNC);
     }
 
     // To access a static field we may need to use the Field or the
     // setter Function.
     Class& cls = Class::Handle(Z, Type::Cast(obj).type_class());
 
-    field = cls.LookupStaticField(field_name);
+    field = cls.LookupStaticFieldAllowPrivate(field_name);
     if (field.IsNull()) {
       String& setter_name = String::Handle(Z, Field::SetterName(field_name));
       setter = cls.LookupStaticFunctionAllowPrivate(setter_name);
     }
 
     if (!setter.IsNull()) {
       // Invoke the setter and return the result.
       const int kNumArgs = 1;
       const Array& args = Array::Handle(Z, Array::New(kNumArgs));
       args.SetAt(0, value_instance);
@@ skipping 18 matching lines @@
     }
 
   } else if (obj.IsInstance()) {
     // Every instance field has a setter Function.  Try to find the
     // setter in any superclass and use that function to access the
     // field.
     const Instance& instance = Instance::Cast(obj);
     Class& cls = Class::Handle(Z, instance.clazz());
     String& setter_name = String::Handle(Z, Field::SetterName(field_name));
     while (!cls.IsNull()) {
-      field = cls.LookupInstanceField(field_name);
+      field = cls.LookupInstanceFieldAllowPrivate(field_name);
       if (!field.IsNull() && field.is_final()) {
         return Api::NewError("%s: cannot set final field '%s'.",
                              CURRENT_FUNC, field_name.ToCString());
       }
       setter = cls.LookupDynamicFunctionAllowPrivate(setter_name);
       if (!setter.IsNull()) {
         break;
       }
       cls = cls.SuperClass();
     }
@@ skipping 1668 matching lines @@
   return Api::Success();
 }
 #endif  // DART_PRECOMPILER
 
 
 DART_EXPORT bool Dart_IsRunningPrecompiledCode() {
   return Dart::IsRunningPrecompiledCode();
 }
 
 }  // namespace dart