First set of changes towards cleaning up the bytearray access APIs

vm/dart_entry.cc

 // Copyright (c) 2011, 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/dart_entry.h"
 
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/object_store.h"
 #include "vm/resolver.h"
@@ skipping 28 matching lines @@
   }
 
   // Now Call the invoke stub which will invoke the dart function.
   invokestub entrypoint = reinterpret_cast<invokestub>(
       StubCode::InvokeDartCodeEntryPoint());
   const Context& context =
       Context::ZoneHandle(Isolate::Current()->object_store()->empty_context());
   ASSERT(context.isolate() == Isolate::Current());
   const Code& code = Code::Handle(function.CurrentCode());
   ASSERT(!code.IsNull());
+  ASSERT(Isolate::Current()->no_callback_scope_depth() == 0);
   return entrypoint(code.EntryPoint(),
                     arguments_descriptor,
                     arguments,
                     context);
 }
 
 
 RawObject* DartEntry::InvokeStatic(const Function& function,
                                    const Array& arguments) {
   const Array& arguments_descriptor =
@@ skipping 16 matching lines @@
     }
   }
   // Now Call the invoke stub which will invoke the dart function.
   invokestub entrypoint = reinterpret_cast<invokestub>(
       StubCode::InvokeDartCodeEntryPoint());
   const Context& context =
       Context::ZoneHandle(Isolate::Current()->object_store()->empty_context());
   ASSERT(context.isolate() == Isolate::Current());
   const Code& code = Code::Handle(function.CurrentCode());
   ASSERT(!code.IsNull());
+  ASSERT(Isolate::Current()->no_callback_scope_depth() == 0);
   return entrypoint(code.EntryPoint(),
                     arguments_descriptor,
                     arguments,
                     context);
 }
 
 
 RawObject* DartEntry::InvokeClosure(const Instance& closure,
                                     const Array& arguments) {
   const Array& arguments_descriptor =
@@ skipping 25 matching lines @@
       }
       // Now call the invoke stub which will invoke the closure function or
       // 'call' function.
       // The closure or non-closure object (receiver) is passed as implicit
       // first argument. It is already included in the arguments array.
       invokestub entrypoint = reinterpret_cast<invokestub>(
           StubCode::InvokeDartCodeEntryPoint());
       ASSERT(context.isolate() == Isolate::Current());
       const Code& code = Code::Handle(function.CurrentCode());
       ASSERT(!code.IsNull());
+      ASSERT(Isolate::Current()->no_callback_scope_depth() == 0);
       return entrypoint(code.EntryPoint(),
                         arguments_descriptor,
                         arguments,
                         context);
     }
   }
   // There is no compatible 'call' method, so invoke noSuchMethod.
   return InvokeNoSuchMethod(instance,
                             Symbols::Call(),
                             arguments,
@@ skipping 366 matching lines @@
           String::Handle(Field::GetterName(Symbols::_id()))));
   const Function& func = Function::Handle(cls.LookupDynamicFunction(func_name));
   ASSERT(!func.IsNull());
   const Array& args = Array::Handle(Array::New(1));
   args.SetAt(0, port);
   return DartEntry::InvokeDynamic(func, args);
 }
 
 
 }  // namespace dart