Add ByteArray interface and provide internal and external implementations.

runtime/vm/raw_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/raw_object.h"
 
 #include "vm/freelist.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/visitor.h"
@@ skipping 98 matching lines @@
         instance_size = FourByteString::InstanceSize(string_length);
         break;
       }
       case kArray:
       case kImmutableArray: {
         const RawArray* raw_array = reinterpret_cast<const RawArray*>(this);
         intptr_t array_length = Smi::Value(raw_array->ptr()->length_);
         instance_size = Array::InstanceSize(array_length);
         break;
       }
+      case kInternalByteArray: {
+        const RawInternalByteArray* raw_byte_array =
+            reinterpret_cast<const RawInternalByteArray*>(this);
+        intptr_t byte_array_length = Smi::Value(raw_byte_array->ptr()->length_);
+        instance_size = InternalByteArray::InstanceSize(byte_array_length);
+        break;
+      }
       case kTypeArguments: {
         const RawTypeArguments* raw_array =
             reinterpret_cast<const RawTypeArguments*>(this);
         intptr_t array_length = Smi::Value(raw_array->ptr()->length_);
         instance_size = TypeArguments::InstanceSize(array_length);
         break;
       }
       case kPcDescriptors: {
         const RawPcDescriptors* raw_descriptors =
             reinterpret_cast<const RawPcDescriptors*>(this);
@@ skipping 440 matching lines @@
   return Array::InstanceSize(length);
 }
 
 
 intptr_t RawImmutableArray::VisitImmutableArrayPointers(
     RawImmutableArray* raw_obj, ObjectPointerVisitor* visitor) {
   return RawArray::VisitArrayPointers(raw_obj, visitor);
 }
 
 
-intptr_t RawByteBuffer::VisitByteBufferPointers(
-    RawByteBuffer* raw_obj, ObjectPointerVisitor* visitor) {
+intptr_t RawByteArray::VisitByteArrayPointers(RawByteArray* raw_obj,
+                                              ObjectPointerVisitor* visitor) {
+  // ByteArray is an abstract class.
+  UNREACHABLE();
+  return 0;
+}
+
+
+intptr_t RawInternalByteArray::VisitInternalByteArrayPointers(
+    RawInternalByteArray* 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()->length_);
+  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
+  return InternalByteArray::InstanceSize(length);
+}
+
+
+intptr_t RawExternalByteArray::VisitExternalByteArrayPointers(
+    RawExternalByteArray* 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 ByteBuffer::InstanceSize();
+  return ExternalByteArray::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();
 }
@@ skipping 11 matching lines @@
 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