--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/interop/SLForeignWriteNode.java	Mon Nov 23 16:30:16 2015 +0100
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2015, 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
+ *
+ * Subject to the condition set forth below, permission is hereby granted to any
+ * person obtaining a copy of this software, associated documentation and/or
+ * data (collectively the "Software"), free of charge and under any and all
+ * copyright rights in the Software, and any and all patent rights owned or
+ * freely licensable by each licensor hereunder covering either (i) the
+ * unmodified Software as contributed to or provided by such licensor, or (ii)
+ * the Larger Works (as defined below), to deal in both
+ *
+ * (a) the Software, and
+ *
+ * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+ * one is included with the Software each a "Larger Work" to which the Software
+ * is contributed by such licensors),
+ *
+ * without restriction, including without limitation the rights to copy, create
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.oracle.truffle.sl.nodes.interop;
+
+import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.frame.VirtualFrame;
+import com.oracle.truffle.api.interop.ForeignAccess;
+import com.oracle.truffle.api.nodes.Node;
+import com.oracle.truffle.api.nodes.RootNode;
+import com.oracle.truffle.api.object.DynamicObject;
+import com.oracle.truffle.api.object.Property;
+import com.oracle.truffle.sl.SLLanguage;
+import com.oracle.truffle.sl.nodes.access.SLWritePropertyCacheNode;
+import com.oracle.truffle.sl.nodes.access.SLWritePropertyCacheNodeGen;
+
+public class SLForeignWriteNode extends RootNode {
+
+    @Child private SLMonomorphicNameWriteNode write;
+
+    public SLForeignWriteNode() {
+        super(SLLanguage.class, null, null);
+    }
+
+    @Override
+    public Object execute(VirtualFrame frame) {
+        if (write == null) {
+            CompilerDirectives.transferToInterpreterAndInvalidate();
+            String name = (String) ForeignAccess.getArguments(frame).get(0);
+            write = insert(new SLMonomorphicNameWriteNode(name));
+        }
+        return write.execute(frame);
+    }
+
+    private static abstract class SLWriteNode extends Node {
+        @Child protected SLForeignToSLTypeNode toSLType = SLForeignToSLTypeNodeGen.create(getSourceSection(), null);
+
+        abstract Object execute(VirtualFrame frame);
+    }
+
+    private static final class SLMonomorphicNameWriteNode extends SLWriteNode {
+
+        private final String name;
+        @Child private SLWritePropertyCacheNode writePropertyCacheNode;
+
+        SLMonomorphicNameWriteNode(String name) {
+            this.name = name;
+            this.writePropertyCacheNode = SLWritePropertyCacheNodeGen.create(name);
+        }
+
+        @Override
+        Object execute(VirtualFrame frame) {
+            if (name.equals(ForeignAccess.getArguments(frame).get(0))) {
+                Object value = toSLType.executeWithTarget(frame, ForeignAccess.getArguments(frame).get(1));
+                DynamicObject receiver = (DynamicObject) ForeignAccess.getReceiver(frame);
+                writePropertyCacheNode.executeObject(receiver, value);
+                return receiver;
+            } else {
+                CompilerDirectives.transferToInterpreterAndInvalidate();
+                return this.replace(new SLPolymorphicNameWriteNode()).execute(frame);
+            }
+        }
+    }
+
+    private static final class SLPolymorphicNameWriteNode extends SLWriteNode {
+
+        @Override
+        Object execute(VirtualFrame frame) {
+            String name = (String) ForeignAccess.getArguments(frame).get(0);
+            DynamicObject obj = (DynamicObject) ForeignAccess.getReceiver(frame);
+            Property property = obj.getShape().getProperty(name);
+            Object value = toSLType.executeWithTarget(frame, ForeignAccess.getArguments(frame).get(0));
+            return obj.set(property.getKey(), value);
+        }
+    }
+}