[GR-45311] Delegate to internal bytearray for BytesIO

PullRequest: graalpython/2711

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/io/PBytesIOBuffer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -44,10 +44,9 @@
 import com.oracle.graal.python.builtins.objects.bytes.PByteArray;
 import com.oracle.graal.python.builtins.objects.object.PythonBuiltinObject;
 import com.oracle.truffle.api.library.ExportLibrary;
-import com.oracle.truffle.api.library.ExportMessage;
 import com.oracle.truffle.api.object.Shape;
 
-@ExportLibrary(value = PythonBufferAcquireLibrary.class)
+@ExportLibrary(value = PythonBufferAcquireLibrary.class, delegateTo = "delegate")
 public final class PBytesIOBuffer extends PythonBuiltinObject {
 
     private final PBytesIO source;
@@ -62,15 +61,4 @@ public PBytesIOBuffer(Object cls, Shape instanceShape, PBytesIO source) {
     public PBytesIO getSource() {
         return source;
     }
-
-    @ExportMessage
-    @SuppressWarnings("static-method")
-    boolean hasBuffer() {
-        return true;
-    }
-
-    @ExportMessage
-    Object acquire(@SuppressWarnings("unused") int flags) {
-        return delegate.getSequenceStorage();
-    }
 }