avm2: Implement Serialization for ByteArrayObject

core/src/avm2/amf.rs

@@ -73,6 +73,8 @@ pub fn serialize_value<'gc>(
                         .to_string(),
                     true,
                 ))
+            } else if let Some(bytearray) = o.as_bytearray() {
+                Some(AmfValue::ByteArray(bytearray.bytes().to_vec()))
             } else {
                 let is_object = o
                     .instance_of()

tests/tests/swfs/avm2/bytearray_serialization/Test.as

@@ -0,0 +1,34 @@
+package {
+	import flash.utils.ByteArray;
+  import flash.display.Sprite;
+
+	public class Test extends Sprite {
+    private function PrintByteArray(name: String, data:ByteArray):void {
+      var bytes: Array = []
+			for (var i: int = 0; i < data.length; i++) {
+				bytes.push(data.readUnsignedByte());
+			}
+			trace(name + ": " + bytes);
+      data.position = 0;
+    }
+
+		public function Test() {
+
+      var original:ByteArray = new ByteArray();
+      original.writeUTF("hello world");
+      original.position = 0;
+
+      PrintByteArray("Original", original);
+
+			var serialized:ByteArray = new ByteArray();
+			serialized.writeObject(original);
+			serialized.position = 0;
+
+			PrintByteArray("Serialized", serialized);
+
+			var readBack:ByteArray = serialized.readObject();
+
+      PrintByteArray("ReadBack", readBack);
+		}
+	}
+}

tests/tests/swfs/avm2/bytearray_serialization/output.txt

@@ -0,0 +1,3 @@
+Original: 0,11,104,101,108,108,111,32,119,111,114,108,100
+Serialized: 12,27,0,11,104,101,108,108,111,32,119,111,114,108,100
+ReadBack: 0,11,104,101,108,108,111,32,119,111,114,108,100

tests/tests/swfs/avm2/bytearray_serialization/test.toml

@@ -0,0 +1 @@
+num_frames = 1