Add ByteArray interface and provide internal and external implementations.

runtime/vm/dart_api_impl.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 "include/dart_api.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
@@ skipping 1386 matching lines @@
         } else {
           result = Api::NewError("Length of List object is not an integer");
         }
       } else {
         SetupErrorResult(&result);
       }
       isolate->set_long_jump_base(base);
       return result;
     }
   }
-  return Api::NewError("Object does not implement the list inteface");
+  return Api::NewError("Object does not implement the 'List' inteface");
 }
 
 
 static RawObject* GetListAt(Isolate* isolate,
                             const Instance& instance,
                             const Integer& index,
                             const Function& function,
                             Dart_Handle* result) {
   ASSERT(isolate != NULL);
   ASSERT(result != NULL);
@@ skipping 235 matching lines @@
           return result;  // Error condition.
         }
       }
       return Api::Success();
     }
   }
   return Api::NewError("Object does not implement the 'List' interface");
 }
 
 
+// --- Byte Arrays ---
+
+
+DART_EXPORT bool Dart_IsByteArray(Dart_Handle object) {
+  DARTSCOPE(Isolate::Current());
+  const Object& obj = Object::Handle(Api::UnwrapHandle(object));
+  return obj.IsByteArray();
+}
+
+
+DART_EXPORT Dart_Handle Dart_NewByteArray(intptr_t length) {
+  DARTSCOPE(Isolate::Current());
+  const InternalByteArray& obj =
+      InternalByteArray::Handle(InternalByteArray::New(length));
+  return Api::NewLocalHandle(obj);
+}
+
+
 // --- Closures ---
 
 
 DART_EXPORT bool Dart_IsClosure(Dart_Handle object) {
   DARTSCOPE(Isolate::Current());
   const Object& obj = Object::Handle(Api::UnwrapHandle(object));
   return obj.IsClosure();
 }
 
 
@@ skipping 792 matching lines @@
     }
     delete debug_region;
   } else {
     *buffer = NULL;
     *buffer_size = 0;
   }
 }
 
 
 }  // namespace dart