--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.tck/src/com/oracle/truffle/tck/impl/TckLanguage.java	Wed Dec 23 07:43:06 2015 +0100
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.tck.impl;
+
+import com.oracle.truffle.api.CallTarget;
+import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.Truffle;
+import com.oracle.truffle.api.TruffleLanguage;
+import com.oracle.truffle.api.TruffleLanguage.Env;
+import com.oracle.truffle.api.frame.MaterializedFrame;
+import com.oracle.truffle.api.frame.VirtualFrame;
+import com.oracle.truffle.api.instrument.Visualizer;
+import com.oracle.truffle.api.instrument.WrapperNode;
+import com.oracle.truffle.api.interop.ForeignAccess;
+import com.oracle.truffle.api.interop.Message;
+import com.oracle.truffle.api.interop.TruffleObject;
+import com.oracle.truffle.api.nodes.Node;
+import com.oracle.truffle.api.nodes.RootNode;
+import com.oracle.truffle.api.source.Source;
+
+import java.io.IOException;
+
+@TruffleLanguage.Registration(mimeType = "application/x-tck", name = "TCK", version = "1.0")
+public final class TckLanguage extends TruffleLanguage<Env> {
+    public static final TckLanguage INSTANCE = new TckLanguage();
+
+    @Override
+    protected Env createContext(Env env) {
+        return env;
+    }
+
+    @Override
+    protected CallTarget parse(Source code, Node context, String... argumentNames) throws IOException {
+        final RootNode root;
+        final String txt = code.getCode();
+        if (txt.startsWith("TCK42:")) {
+            int nextColon = txt.indexOf(":", 6);
+            String mimeType = txt.substring(6, nextColon);
+            Source toParse = Source.fromText(txt.substring(nextColon + 1), "").withMimeType(mimeType);
+            root = new MultiplyNode(toParse);
+        } else {
+            final double value = Double.parseDouble(txt);
+            root = RootNode.createConstantNode(value);
+        }
+        return Truffle.getRuntime().createCallTarget(root);
+    }
+
+    @Override
+    protected Object findExportedSymbol(Env context, String globalName, boolean onlyExplicit) {
+        return null;
+    }
+
+    @Override
+    protected Object getLanguageGlobal(Env context) {
+        return null;
+    }
+
+    @Override
+    protected boolean isObjectOfLanguage(Object object) {
+        return false;
+    }
+
+    @Override
+    protected Visualizer getVisualizer() {
+        return null;
+    }
+
+    @Override
+    protected boolean isInstrumentable(Node node) {
+        return false;
+    }
+
+    @Override
+    protected WrapperNode createWrapperNode(Node node) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected Object evalInContext(Source source, Node node, MaterializedFrame mFrame) throws IOException {
+        throw new IOException();
+    }
+
+    private static final class MultiplyNode extends RootNode implements TruffleObject, ForeignAccess.Factory {
+        private final Source code;
+
+        public MultiplyNode(Source toParse) {
+            super(TckLanguage.class, null, null);
+            this.code = toParse;
+        }
+
+        @Override
+        public Object execute(VirtualFrame frame) {
+            Env env = TckLanguage.INSTANCE.findContext(TckLanguage.INSTANCE.createFindContextNode());
+            if (frame.getArguments().length == 0) {
+                return this;
+            }
+            try {
+                CallTarget call = env.parse(code, (String) frame.getArguments()[1], (String) frame.getArguments()[2]);
+                return call.call(6, 7);
+            } catch (IOException ex) {
+                throw new AssertionError("Cannot parse " + code, ex);
+            }
+        }
+
+        @Override
+        public ForeignAccess getForeignAccess() {
+            return ForeignAccess.create(this);
+        }
+
+        @Override
+        public boolean canHandle(TruffleObject obj) {
+            return obj instanceof MultiplyNode;
+        }
+
+        @Override
+        public CallTarget accessMessage(Message tree) {
+            if (tree == Message.IS_EXECUTABLE) {
+                return Truffle.getRuntime().createCallTarget(RootNode.createConstantNode(Boolean.TRUE));
+            } else if (Message.createExecute(2).equals(tree)) {
+                return Truffle.getRuntime().createCallTarget(this);
+            } else {
+                throw new IllegalArgumentException("" + tree);
+            }
+        }
+
+    }
+
+    public static Number expectNumber(Object o) {
+        if (o instanceof Number) {
+            return (Number) o;
+        }
+        CompilerDirectives.transferToInterpreter();
+        throw new IllegalArgumentException(o + " not a Number");
+    }
+
+    public static String expectString(Object o) {
+        if (o instanceof String) {
+            return (String) o;
+        }
+        CompilerDirectives.transferToInterpreter();
+        throw new IllegalArgumentException(o + " not a String");
+    }
+
+    public static TruffleObject expectTruffleObject(Object o) {
+        if (o instanceof TruffleObject) {
+            return (TruffleObject) o;
+        }
+        CompilerDirectives.transferToInterpreter();
+        throw new IllegalArgumentException(o + " not a TruffleObject");
+    }
+
+    public static int checkBounds(int idx, int size) {
+        if (idx < 0 || idx >= size) {
+            CompilerDirectives.transferToInterpreter();
+            throw new IndexOutOfBoundsException("Index: " + idx + " Size: " + size);
+        }
+        return idx;
+    }
+
+}