Implementation for ClosureMirror.findInContext.

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 "vm/bigint_operations.h"
@@ skipping 3098 matching lines @@
     if (!obj.IsNull() && !obj.IsInstance()) {
       RETURN_TYPE_ERROR(isolate, arguments[i], Instance);
     }
     args.SetAt(i + 1, obj);
   }
   // Now try to invoke the closure.
   return Api::NewHandle(isolate, DartEntry::InvokeClosure(args));
 }
 
 
-static bool FieldIsUninitialized(Isolate* isolate, const Field& fld) {
-  ASSERT(!fld.IsNull());
-
-  // Return getter method for uninitialized fields, rather than the
-  // field object, since the value in the field object will not be
-  // initialized until the first time the getter is invoked.
-  const Instance& value = Instance::Handle(isolate, fld.value());
-  ASSERT(value.raw() != Object::transition_sentinel().raw());
-  return value.raw() == Object::sentinel().raw();
-}
-
-
 DART_EXPORT Dart_Handle Dart_GetField(Dart_Handle container, Dart_Handle name) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   CHECK_CALLBACK_STATE(isolate);
 
   const String& field_name = Api::UnwrapStringHandle(isolate, name);
   if (field_name.IsNull()) {
     RETURN_TYPE_ERROR(isolate, name, String);
   }
 
   // Finalize all classes.
   Dart_Handle state = Api::CheckIsolateState(isolate);
   if (::Dart_IsError(state)) {
     return state;
   }
 
   Field& field = Field::Handle(isolate);
   Function& getter = Function::Handle(isolate);
   const Object& obj = Object::Handle(isolate, Api::UnwrapHandle(container));
   if (obj.IsNull()) {
     return Api::NewError("%s expects argument 'container' to be non-null.",
                          CURRENT_FUNC);
   } else if (obj.IsType()) {
     // To access a static field we may need to use the Field or the
     // getter Function.
     Class& cls = Class::Handle(isolate, Type::Cast(obj).type_class());
 
     field = cls.LookupStaticField(field_name);
-    if (field.IsNull() || FieldIsUninitialized(isolate, field)) {
+    if (field.IsNull() || field.IsUninitialized()) {
       const String& getter_name =
           String::Handle(isolate, Field::GetterName(field_name));
       getter = cls.LookupStaticFunctionAllowPrivate(getter_name);
     }
 
     if (!getter.IsNull()) {
       // Invoke the getter and return the result.
       return Api::NewHandle(
           isolate, DartEntry::InvokeFunction(getter, Object::empty_array()));
     } else if (!field.IsNull()) {
@@ skipping 38 matching lines @@
     // To access a top-level we may need to use the Field or the
     // getter Function.  The getter function may either be in the
     // library or in the field's owner class, depending.
     const Library& lib = Library::Cast(obj);
     field = lib.LookupFieldAllowPrivate(field_name);
     if (field.IsNull()) {
       // No field found and no ambiguity error.  Check for a getter in the lib.
       const String& getter_name =
           String::Handle(isolate, Field::GetterName(field_name));
       getter = lib.LookupFunctionAllowPrivate(getter_name);
-    } else if (!field.IsNull() && FieldIsUninitialized(isolate, field)) {
+    } else if (!field.IsNull() && field.IsUninitialized()) {
       // A field was found.  Check for a getter in the field's owner classs.
       const Class& cls = Class::Handle(isolate, field.owner());
       const String& getter_name =
           String::Handle(isolate, Field::GetterName(field_name));
       getter = cls.LookupStaticFunctionAllowPrivate(getter_name);
     }
 
     if (!getter.IsNull()) {
       // Invoke the getter and return the result.
       return Api::NewHandle(
@@ skipping 1067 matching lines @@
   }
   {
     NoGCScope no_gc;
     RawObject* raw_obj = obj.raw();
     isolate->heap()->SetPeer(raw_obj, peer);
   }
   return Api::Success();
 }
 
 }  // namespace dart