Add an external array type to support typed arrays.

runtime/vm/raw_object.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/raw_object.h"
 
 #include "vm/object.h"
 #include "vm/visitor.h"
 
 
@@ skipping 458 matching lines @@
   return Array::InstanceSize(length);
 }
 
 
 intptr_t RawImmutableArray::VisitImmutableArrayPointers(
     RawImmutableArray* raw_obj, ObjectPointerVisitor* visitor) {
   return RawArray::VisitArrayPointers(raw_obj, visitor);
 }
 
 
+intptr_t RawExternalArray::VisitExternalArrayPointers(
+    RawExternalArray* raw_obj, ObjectPointerVisitor* visitor) {
+  // Make sure that we got here with the tagged pointer as this.
+  ASSERT(raw_obj->IsHeapObject());

[siva, 2011/11/02 17:05:31]

I would add
visitor->VisitPointers(from, to) for consistency.

[cshapiro, 2011/11/04 18:16:21]

Added. Done.

+  return ExternalArray::InstanceSize();
+}
+
+
 intptr_t RawClosure::VisitClosurePointers(RawClosure* raw_obj,
                                           ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return Closure::InstanceSize();
 }
 
 
 intptr_t RawStacktrace::VisitStacktracePointers(RawStacktrace* raw_obj,
                                                 ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return Stacktrace::InstanceSize();
 }
 
 
 intptr_t RawJSRegExp::VisitJSRegExpPointers(RawJSRegExp* raw_obj,
                                             ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   intptr_t length = Smi::Value(raw_obj->ptr()->data_length_);
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return JSRegExp::InstanceSize(length);
 }
 
 }  // namespace dart