Implement InteropLibrary#readBuffer on a new object SharedInterop.

oracle · Nov 27, 2023 · ae38af4 · ae38af4
1 parent 2c17ca6
commit ae38af4
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diff --git a/...le.espresso/src/com/oracle/truffle/espresso/runtime/dispatch/messages/InteropMessage.java b/...le.espresso/src/com/oracle/truffle/espresso/runtime/dispatch/messages/InteropMessage.java
@@ -125,6 +125,7 @@ public enum Message {
         IsBufferWritable,
         GetBufferSize,
         ReadBufferByte,
+        ReadBuffer,
         WriteBufferByte,
         ReadBufferShort,
         WriteBufferShort,

diff --git a/...espresso/src/com/oracle/truffle/espresso/runtime/dispatch/staticobject/SharedInterop.java b/...espresso/src/com/oracle/truffle/espresso/runtime/dispatch/staticobject/SharedInterop.java
@@ -1358,6 +1358,23 @@ public static byte readBufferByte(StaticObject receiver, long byteOffset,
         throw unsupported();
     }
 
+    @ExportMessage
+    public static byte readBuffer(StaticObject receiver, long byteOffset, byte[] destination, int destinationOffset, int length,
+                    @Cached IndirectCallNode callNode,
+                    @Cached CallSharedInteropMessage sharedCallNode) throws UnsupportedMessageException {
+        int dispatchId = receiver.getKlass().getDispatchId();
+        InteropMessage.Message message = InteropMessage.Message.ReadBuffer;
+        if (InteropMessageFactories.isShareable(dispatchId, message)) {
+            dispatchId = InteropMessageFactories.sourceDispatch(dispatchId, message);
+            return (byte) sharedCallNode.call(dispatchId, message, receiver, byteOffset, destination, destinationOffset, length);
+        }
+        CallTarget target = getTarget(receiver, InteropMessage.Message.ReadBuffer);
+        if (target != null) {
+            return (byte) callNode.call(target, receiver, byteOffset);
+        }
+        throw unsupported();
+    }
+
     @ExportMessage
     public static void writeBufferByte(StaticObject receiver, long byteOffset, byte value,
                     @Cached IndirectCallNode callNode,