--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/ExecuteMethodTest.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,433 @@
+/*
+ * Copyright (c) 2014, 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.
+ *
+ * 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.api.dsl.test;
+
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.api.dsl.internal.*;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.nodes.*;
+
+public class ExecuteMethodTest {
+
+    private static final String ERROR_NO_EXECUTE = "No accessible and overridable generic execute method found. Generic execute methods usually have the signature 'public abstract {Type} "
+                    + "execute(VirtualFrame)' and must not throw any checked exceptions.";
+
+    @TypeSystem({int.class})
+    @DSLOptions(useNewLayout = true)
+    static class ExecuteMethodTypes {
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    abstract static class ChildNoFrame extends Node {
+        abstract Object execute();
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError(ERROR_NO_EXECUTE)
+    abstract static class ExecuteThis1 extends Node {
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError(ERROR_NO_EXECUTE)
+    abstract static class ExecuteThis2 extends Node {
+
+        abstract Object execute() throws UnexpectedResultException;
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError(ERROR_NO_EXECUTE)
+    abstract static class ExecuteThis3 extends Node {
+
+        abstract int execute() throws UnexpectedResultException;
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThis4 extends Node {
+
+        protected abstract Object execute();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThis5 extends Node {
+
+        public abstract Object execute();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError(ERROR_NO_EXECUTE)
+    abstract static class ExecuteThis6 extends Node {
+
+        @SuppressWarnings({"unused", "static-method"})
+        private Object execute() {
+            return 0;
+        }
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError(ERROR_NO_EXECUTE)
+    abstract static class ExecuteThis7 extends Node {
+
+        @SuppressWarnings("static-method")
+        public final int executeInt() {
+            return 0;
+        }
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThis8 extends Node {
+
+        abstract int executeInt();
+
+        abstract Object executeObject();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThis9 extends Node {
+
+        abstract int executeInt();
+
+        // disambiguate executeObject
+        final Object executeObject() {
+            return executeInt();
+        }
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThisVoid1 extends Node {
+
+        abstract void executeVoid();
+
+        @Specialization
+        void doInt(@SuppressWarnings("unused") int a) {
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThisVoid2 extends Node {
+
+        // allow one execute void
+        abstract void executeVoid();
+
+        abstract Object executeObject();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteThisVoid3 extends Node {
+
+        // allow only one execute void
+        abstract void executeVoid1();
+
+        abstract void executeVoid2();
+
+        abstract Object executeObject();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrame1 extends Node {
+
+        // no frame in execute. no parameter in specializations
+        abstract Object executeNoFrame();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrame2 extends Node {
+
+        // frame in execute also usable in specialization
+        abstract Object executeWithFrame(VirtualFrame frame);
+
+        @Specialization
+        int doInt(@SuppressWarnings("unused") VirtualFrame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrame3 extends Node {
+
+        abstract Object executeWithFrame(Frame frame);
+
+        @Specialization
+        int doInt(@SuppressWarnings("unused") Frame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ExecuteWithFrame4.class)
+    abstract static class ExecuteWithFrame4 extends Node {
+
+        abstract Object executeWithFrame(MaterializedFrame frame);
+
+        @Specialization
+        int doInt(@SuppressWarnings("unused") MaterializedFrame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrameError1 extends Node {
+
+        abstract Object executeNoFrame();
+
+        @Specialization
+        @ExpectError("Method signature (VirtualFrame, int) does not match to the expected signature:%")
+        int doInt(@SuppressWarnings("unused") VirtualFrame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrameError2 extends Node {
+
+        abstract Object executeFrame(MaterializedFrame frame);
+
+        @Specialization
+        @ExpectError("Method signature (VirtualFrame, int) does not match to the expected signature:%")
+        int doInt(@SuppressWarnings("unused") VirtualFrame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrameError3 extends Node {
+
+        abstract Object executeFrame(VirtualFrame frame);
+
+        @Specialization
+        @ExpectError("Method signature (MaterializedFrame, int) does not match to the expected signature:%")
+        int doInt(@SuppressWarnings("unused") MaterializedFrame frame, int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    @ExpectError("Invalid inconsistent frame types [MaterializedFrame, VirtualFrame] found for the declared execute methods.%")
+    abstract static class ExecuteWithFrameError4 extends Node {
+
+        abstract Object execute(VirtualFrame frame);
+
+        abstract int executeInt(MaterializedFrame frame) throws UnexpectedResultException;
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteWithFrameError5 extends Node {
+
+        abstract Object execute();
+
+        abstract int executeInt(MaterializedFrame frame) throws UnexpectedResultException;
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    abstract static class ChildVirtualFrame extends Node {
+        abstract Object execute(VirtualFrame frame);
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    abstract static class ChildMaterializedFrame extends Node {
+        abstract Object execute(MaterializedFrame frame);
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    abstract static class ChildFrame extends Node {
+        abstract Object execute(Frame frame);
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildNoFrame.class)
+    abstract static class ExecuteChildFrame1 extends Node {
+
+        abstract Object execute(VirtualFrame frame);
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildFrame.class)
+    abstract static class ExecuteChildFrame2 extends Node {
+
+        abstract Object execute(VirtualFrame frame);
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildFrame.class)
+    abstract static class ExecuteChildFrame3 extends Node {
+
+        abstract Object execute(MaterializedFrame frame);
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildFrame.class)
+    abstract static class ExecuteChildFrame4 extends Node {
+
+        abstract Object execute(Frame frame);
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @ExpectError("No generic execute method found with 0 evaluated arguments for node type ChildVirtualFrame and frame types [com.oracle.truffle.api.frame.Frame].")
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildVirtualFrame.class)
+    abstract static class ExecuteChildFrameError1 extends Node {
+
+        abstract Object execute(Frame frame);
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @ExpectError("No generic execute method found with 0 evaluated arguments for node type ChildFrame and frame types [].")
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildFrame.class)
+    abstract static class ExecuteChildFrameError2 extends Node {
+
+        abstract Object execute();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+    @ExpectError("No generic execute method found with 0 evaluated arguments for node type ChildVirtualFrame and frame types [].")
+    @TypeSystemReference(ExecuteMethodTypes.class)
+    @NodeChild(value = "a", type = ChildVirtualFrame.class)
+    abstract static class ExecuteChildFrameError3 extends Node {
+
+        abstract Object execute();
+
+        @Specialization
+        int doInt(int a) {
+            return a;
+        }
+    }
+
+}