# HG changeset patch
# User Christos Kotselidis <christos.kotselidis@oracle.com>
# Date 1377864479 -7200
# Node ID 1cd98fee213964d1586994da2b46195699fc087a
# Parent  c121402a62d8419fbc4be600d349e65597733101# Parent  1ccb36a32f87ef45e37032e858a93eae364d5cd5
Merge

diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/CompilerErrorTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/CompilerErrorTest.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2012, 2012, 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.test.TypeSystemTest.ValueNode;
+
+public class CompilerErrorTest {
+
+    abstract static class Visiblity01 extends ValueNode {
+
+        @Specialization
+        @SuppressWarnings("static-method")
+        @ExpectError("Method annotated with @Specialization must not be private.")
+        private Object s() {
+            return null;
+        }
+
+    }
+
+    @ExpectError("Classes containing a @Specialization annotation must not be private.")
+    private abstract static class Visiblity02 extends ValueNode {
+
+        @Specialization
+        public Object s() {
+            return null;
+        }
+
+    }
+
+    // assert no error
+    @ExpectError({})
+    private abstract static class Visiblity03 extends ValueNode {
+
+    }
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/SpecializationGroupingTest.java
--- a/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/SpecializationGroupingTest.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/SpecializationGroupingTest.java	Fri Aug 30 14:07:59 2013 +0200
@@ -26,10 +26,12 @@
 
 import com.oracle.truffle.api.*;
 import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.api.dsl.test.SpecializationGroupingTestFactory.TestElseConnectionBug1Factory;
 import com.oracle.truffle.api.dsl.test.SpecializationGroupingTestFactory.TestGroupingFactory;
 import com.oracle.truffle.api.dsl.test.TypeSystemTest.SimpleTypes;
 import com.oracle.truffle.api.dsl.test.TypeSystemTest.TestRootNode;
 import com.oracle.truffle.api.dsl.test.TypeSystemTest.ValueNode;
+import com.oracle.truffle.api.frame.*;
 import com.oracle.truffle.api.nodes.*;
 
 /**
@@ -154,6 +156,50 @@
 
     }
 
+    @Test
+    public void testElseConnectionBug1() {
+        CallTarget target = TestHelper.createCallTarget(TestElseConnectionBug1Factory.create(new GenericInt()));
+        Assert.assertEquals(42, target.call());
+    }
+
+    @SuppressWarnings("unused")
+    @NodeChild(value = "genericChild", type = GenericInt.class)
+    public abstract static class TestElseConnectionBug1 extends ValueNode {
+
+        @Specialization(order = 1, rewriteOn = {SlowPathException.class}, guards = "isInitialized")
+        public int doInteger(int value) throws SlowPathException {
+            throw new SlowPathException();
+        }
+
+        @Specialization(order = 3, guards = "isInitialized")
+        public int doObject(int value) {
+            return value == 42 ? value : 0;
+        }
+
+        @Specialization(order = 4, guards = "!isInitialized")
+        public Object doUninitialized(int value) {
+            throw new AssertionError();
+        }
+
+        boolean isInitialized(int value) {
+            return true;
+        }
+    }
+
+    public static final class GenericInt extends ValueNode {
+
+        @Override
+        public Object execute(VirtualFrame frame) {
+            return executeInt(frame);
+        }
+
+        @Override
+        public int executeInt(VirtualFrame frame) {
+            return 42;
+        }
+
+    }
+
     private static class MockAssumption implements Assumption {
 
         int checked;
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TestHelper.java
--- a/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TestHelper.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TestHelper.java	Fri Aug 30 14:07:59 2013 +0200
@@ -22,6 +22,8 @@
  */
 package com.oracle.truffle.api.dsl.test;
 
+import static org.junit.Assert.*;
+
 import java.util.*;
 
 import com.oracle.truffle.api.*;
@@ -75,4 +77,69 @@
         return createCallTarget(node).call(new TestArguments(values));
     }
 
+    static Object array(Object... val) {
+        return val;
+    }
+
+    static <E> List<List<E>> permutations(List<E> list) {
+        return permutations(new ArrayList<E>(), list, new ArrayList<List<E>>());
+    }
+
+    static Object[][] permutations(Object... list) {
+        List<List<Object>> permutations = permutations(Arrays.asList(list));
+
+        Object[][] a = new Object[permutations.size()][];
+        int index = 0;
+        for (List<Object> p : permutations) {
+            a[index] = p.toArray(new Object[p.size()]);
+            index++;
+        }
+
+        return a;
+    }
+
+    static <E> List<List<E>> permutations(List<E> prefix, List<E> suffix, List<List<E>> output) {
+        if (suffix.size() == 1) {
+            ArrayList<E> newElement = new ArrayList<>(prefix);
+            newElement.addAll(suffix);
+            output.add(newElement);
+            return output;
+        }
+
+        for (int i = 0; i < suffix.size(); i++) {
+            List<E> newPrefix = new ArrayList<>(prefix);
+            newPrefix.add(suffix.get(i));
+            List<E> newSuffix = new ArrayList<>(suffix);
+            newSuffix.remove(i);
+            permutations(newPrefix, newSuffix, output);
+        }
+
+        return output;
+    }
+
+    /* Methods tests all test values in combinational order. */
+    static void assertRuns(NodeFactory<? extends ValueNode> factory, Object result, Object... testValues) {
+        // test each run by its own.
+        for (int i = 0; i < testValues.length; i++) {
+            assertValue(createRoot(factory), result, testValues);
+        }
+
+        // test all combinations of the test values
+        List<List<Object>> permuts = permutations(Arrays.asList(testValues));
+        for (List<Object> list : permuts) {
+            TestRootNode<?> root = createRoot(factory);
+            for (Object object : list) {
+                assertValue(root, result, object);
+            }
+        }
+    }
+
+    static void assertValue(TestRootNode<? extends ValueNode> root, Object result, Object testValues) {
+        if (testValues instanceof Object[]) {
+            assertEquals(result, executeWith(root, (Object[]) testValues));
+        } else {
+            assertEquals(result, executeWith(root, testValues));
+        }
+    }
+
 }
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TypeSystemErrorsTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TypeSystemErrorsTest.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2012, 2013, 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.*;
+
+public class TypeSystemErrorsTest {
+
+    @TypeSystem({int.class, boolean.class})
+    public static class Types0 {
+
+    }
+
+    @ExpectError("Invalid type order. The type(s) [java.lang.String] are inherited from a earlier defined type java.lang.CharSequence.")
+    @TypeSystem({CharSequence.class, String.class})
+    public static class Types1 {
+
+    }
+
+    @TypeSystem({int.class, boolean.class})
+    public static class Types2 {
+
+        @TypeCast
+        @ExpectError("The provided return type \"String\" does not match expected return type \"int\".%")
+        String asInteger(Object value) {
+            return (String) value;
+        }
+
+    }
+
+    @TypeSystem({int.class, boolean.class})
+    public static class Types3 {
+
+        @TypeCast
+        @ExpectError("The provided return type \"boolean\" does not match expected return type \"int\".%")
+        boolean asInteger(Object value) {
+            return (boolean) value;
+        }
+
+    }
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/ExpectError.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/ExpectError.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2012, 2012, 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.api.dsl;
+
+import java.lang.annotation.*;
+
+/**
+ * This annotation is internally known by the dsl processor and used to expect errors for testing
+ * purposes. This is not part of public API.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ExpectError {
+
+    String[] value();
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/ImplicitCast.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/ImplicitCast.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2012, 2012, 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.api.dsl;
+
+import java.lang.annotation.*;
+
+/**
+ * EXPERIMENTAL Filter feature. May change or disappear without notice. This feature is not
+ * functional yet.
+ */
+@Retention(RetentionPolicy.CLASS)
+@Target({ElementType.METHOD})
+public @interface ImplicitCast {
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AbstractParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AbstractParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AbstractParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -65,7 +65,7 @@
                 return null;
             }
 
-            model.emitMessages((TypeElement) element, log);
+            model.emitMessages(context, (TypeElement) element, log);
             return filterErrorElements(model);
         } catch (CompileErrorException e) {
             log.message(Kind.WARNING, element, null, null, "The truffle processor could not parse class due to error: %s", e.getMessage());
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/TruffleTypes.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/TruffleTypes.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/TruffleTypes.java	Fri Aug 30 14:07:59 2013 +0200
@@ -30,6 +30,7 @@
 
 import com.oracle.truffle.api.*;
 import com.oracle.truffle.api.CompilerDirectives.*;
+import com.oracle.truffle.api.dsl.*;
 import com.oracle.truffle.api.frame.*;
 import com.oracle.truffle.api.nodes.*;
 import com.oracle.truffle.api.nodes.Node.Child;
@@ -56,6 +57,7 @@
     private final TypeMirror compilerAsserts;
     private final DeclaredType slowPath;
     private final DeclaredType truffleOptions;
+    private final TypeElement expectError;
 
     private final List<String> errors = new ArrayList<>();
 
@@ -74,6 +76,11 @@
         nodeInfoKind = getRequired(context, NodeInfo.Kind.class);
         slowPath = getRequired(context, SlowPath.class);
         truffleOptions = getRequired(context, TruffleOptions.class);
+        expectError = (TypeElement) getRequired(context, ExpectError.class).asElement();
+    }
+
+    public TypeElement getExpectError() {
+        return expectError;
     }
 
     public DeclaredType getNodeInfoAnnotation() {
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/Utils.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/Utils.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/Utils.java	Fri Aug 30 14:07:59 2013 +0200
@@ -423,6 +423,8 @@
                 return getSimpleName(mirror);
             case ERROR:
                 throw new CompileErrorException("Type error " + mirror);
+            case EXECUTABLE:
+                return ((ExecutableType) mirror).toString();
             case NONE:
                 return "$none";
             default:
@@ -755,6 +757,10 @@
 
     public static AnnotationMirror findAnnotationMirror(ProcessingEnvironment processingEnv, List<? extends AnnotationMirror> mirrors, Class<?> annotationClass) {
         TypeElement expectedAnnotationType = processingEnv.getElementUtils().getTypeElement(annotationClass.getCanonicalName());
+        return findAnnotationMirror(mirrors, expectedAnnotationType);
+    }
+
+    public static AnnotationMirror findAnnotationMirror(List<? extends AnnotationMirror> mirrors, TypeElement expectedAnnotationType) {
         for (AnnotationMirror mirror : mirrors) {
             DeclaredType annotationType = mirror.getAnnotationType();
             TypeElement actualAnnotationType = (TypeElement) annotationType.asElement();
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/CreateCastParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/CreateCastParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/CreateCastParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -61,7 +61,7 @@
     }
 
     @Override
-    public CreateCastData create(TemplateMethod method) {
+    public CreateCastData create(TemplateMethod method, boolean invalid) {
         AnnotationMirror mirror = method.getMarkerAnnotation();
         List<String> childNames = Utils.getAnnotationValueList(String.class, mirror, "value");
         CreateCastData cast = new CreateCastData(method, childNames);
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ExecutableTypeMethodParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ExecutableTypeMethodParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ExecutableTypeMethodParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -83,7 +83,7 @@
     }
 
     @Override
-    public ExecutableTypeData create(TemplateMethod method) {
+    public ExecutableTypeData create(TemplateMethod method, boolean invalid) {
         TypeData resolvedType = method.getReturnType().getTypeSystemType();
         return new ExecutableTypeData(method, method.getMethod(), getNode().getTypeSystem(), resolvedType);
     }
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/GenericParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/GenericParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/GenericParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -61,7 +61,7 @@
     }
 
     @Override
-    public SpecializationData create(TemplateMethod method) {
+    public SpecializationData create(TemplateMethod method, boolean invalid) {
         SpecializationData data = new SpecializationData(method, true, false, false);
         return data;
     }
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeMethodParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeMethodParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeMethodParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -85,10 +85,14 @@
         return methodSpec;
     }
 
-    private void addDefaultChildren(boolean shortCircuitsEnabled, String shortCircuitName, MethodSpec methodSpec) {
+    public void addDefaultChildren(boolean shortCircuitsEnabled, String breakName, MethodSpec methodSpec) {
         // children are null when parsing executable types
         if (getNode().getChildren() != null) {
             for (NodeChildData child : getNode().getChildren()) {
+                String valueName = child.getName();
+                if (breakName != null && valueName.equals(breakName)) {
+                    break;
+                }
                 if (child.getExecutionKind() == ExecutionKind.DEFAULT) {
                     ParameterSpec spec = createValueParameterSpec(child.getName(), child.getNodeData(), child.getExecuteWith().size());
                     if (child.getCardinality().isMany()) {
@@ -97,10 +101,6 @@
                     }
                     methodSpec.addRequired(spec);
                 } else if (child.getExecutionKind() == ExecutionKind.SHORT_CIRCUIT) {
-                    String valueName = child.getName();
-                    if (shortCircuitName != null && valueName.equals(shortCircuitName)) {
-                        break;
-                    }
 
                     if (shortCircuitsEnabled) {
                         methodSpec.addRequired(new ParameterSpec(shortCircuitValueName(valueName), getContext().getType(boolean.class)));
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -199,6 +199,10 @@
         }
 
         for (NodeData splittedNode : nodes) {
+            if (templateType.getModifiers().contains(Modifier.PRIVATE) && splittedNode.getSpecializations().size() > 0) {
+                splittedNode.addError("Classes containing a @%s annotation must not be private.", Specialization.class.getSimpleName());
+            }
+
             finalizeSpecializations(elements, splittedNode);
             verifyNode(splittedNode, elements);
             createPolymorphicSpecializations(splittedNode);
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ShortCircuitParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ShortCircuitParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/ShortCircuitParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -58,7 +58,7 @@
     }
 
     @Override
-    public ShortCircuitData create(TemplateMethod method) {
+    public ShortCircuitData create(TemplateMethod method, boolean invalid) {
         String shortCircuitValue = Utils.getAnnotationValue(String.class, method.getMarkerAnnotation(), "value");
 
         if (!shortCircuitValues.contains(shortCircuitValue)) {
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationGroup.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationGroup.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationGroup.java	Fri Aug 30 14:07:59 2013 +0200
@@ -41,12 +41,14 @@
     private final List<TypeGuard> typeGuards;
     private final List<GuardData> guards;
 
+    private final NodeData node;
     private final SpecializationData specialization;
     private final List<SpecializationGroup> children = new ArrayList<>();
 
     private SpecializationGroup parent;
 
     private SpecializationGroup(SpecializationData data) {
+        this.node = data.getNode();
         this.assumptions = new ArrayList<>();
         this.typeGuards = new ArrayList<>();
         this.guards = new ArrayList<>();
@@ -61,9 +63,11 @@
     }
 
     public SpecializationGroup(List<SpecializationGroup> children, List<String> assumptionMatches, List<TypeGuard> typeGuardsMatches, List<GuardData> guardMatches) {
+        assert !children.isEmpty() : "children must not be empty";
         this.assumptions = assumptionMatches;
         this.typeGuards = typeGuardsMatches;
         this.guards = guardMatches;
+        this.node = children.get(0).node;
         this.specialization = null;
         updateChildren(children);
     }
@@ -114,8 +118,7 @@
                 return null;
             }
             GuardData previousGuard = previous.getGuards().get(elseConnectedGuards.size());
-            if (guard.getMethod().equals(previousGuard.getMethod())) {
-                assert guard.isNegated() != previousGuard.isNegated();
+            if (guard.getMethod().equals(previousGuard.getMethod()) && guard.isNegated() != previousGuard.isNegated()) {
                 return guard;
             }
         }
@@ -205,16 +208,29 @@
         for (Iterator<GuardData> iterator = guardMatches.iterator(); iterator.hasNext();) {
             GuardData guardMatch = iterator.next();
 
-            List<TypeMirror> guardTypes = TemplateMethod.getSignatureTypes(guardMatch.getParameters());
-            for (int i = 0; i < guardTypes.size(); i++) {
-                TypeMirror guardType = guardTypes.get(i);
-                int signatureIndex = i + 1;
+            int signatureIndex = 0;
+            for (ActualParameter parameter : guardMatch.getParameters()) {
+                signatureIndex++;
+                if (parameter.getSpecification().isSignature()) {
+                    continue;
+                }
+
+                TypeMirror guardType = parameter.getType();
 
                 // object guards can be safely moved up
                 if (Utils.isObject(guardType)) {
                     continue;
                 }
 
+                // generic guards can be safely moved up
+                SpecializationData generic = first.node.getGenericSpecialization();
+                if (generic != null) {
+                    ActualParameter genericParameter = generic.findParameter(parameter.getLocalName());
+                    if (genericParameter != null && Utils.typeEquals(genericParameter.getType(), guardType)) {
+                        continue;
+                    }
+                }
+
                 // signature index required for moving up guards
                 if (containsIndex(typeGuardsMatches, signatureIndex) || (first.getParent() != null && first.getParent().containsTypeGuardIndex(signatureIndex))) {
                     continue;
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationListenerParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationListenerParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationListenerParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -47,7 +47,7 @@
     }
 
     @Override
-    public SpecializationListenerData create(TemplateMethod method) {
+    public SpecializationListenerData create(TemplateMethod method, boolean invalid) {
         return new SpecializationListenerData(method);
     }
 
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationMethodParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationMethodParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationMethodParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -44,7 +44,7 @@
     }
 
     @Override
-    public SpecializationData create(TemplateMethod method) {
+    public SpecializationData create(TemplateMethod method, boolean invalid) {
         return parseSpecialization(method);
     }
 
@@ -57,7 +57,6 @@
         int order = Utils.getAnnotationValue(Integer.class, method.getMarkerAnnotation(), "order");
         if (order < 0 && order != Specialization.DEFAULT_ORDER) {
             method.addError("Invalid order attribute %d. The value must be >= 0 or the default value.");
-            return null;
         }
 
         AnnotationValue rewriteValue = Utils.getAnnotationValue(method.getMarkerAnnotation(), "rewriteOn");
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/MessageContainer.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/MessageContainer.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/MessageContainer.java	Fri Aug 30 14:07:59 2013 +0200
@@ -51,13 +51,21 @@
 
     public abstract Element getMessageElement();
 
-    public final void emitMessages(TypeElement baseElement, Log log) {
-        emitMessagesImpl(baseElement, log, new HashSet<MessageContainer>());
+    public final void emitMessages(ProcessorContext context, TypeElement baseElement, Log log) {
+        emitMessagesImpl(context, baseElement, log, new HashSet<MessageContainer>(), null);
     }
 
-    private void emitMessagesImpl(TypeElement baseElement, Log log, Set<MessageContainer> visitedSinks) {
+    private void emitMessagesImpl(ProcessorContext context, TypeElement baseElement, Log log, Set<MessageContainer> visitedSinks, List<Message> verifiedMessages) {
+        List<Message> childMessages;
+        if (verifiedMessages == null) {
+            childMessages = collectMessagesWithElementChildren(new HashSet<MessageContainer>(), getMessageElement());
+        } else {
+            childMessages = verifiedMessages;
+        }
+        verifyExpectedMessages(context, log, childMessages);
+
         for (Message message : getMessages()) {
-            emitDefault(baseElement, log, message);
+            emitDefault(context, baseElement, log, message);
         }
 
         for (MessageContainer sink : findChildContainers()) {
@@ -66,18 +74,95 @@
             }
 
             visitedSinks.add(sink);
-            sink.emitMessagesImpl(baseElement, log, visitedSinks);
+            if (sink.getMessageElement() == this.getMessageElement()) {
+                sink.emitMessagesImpl(context, baseElement, log, visitedSinks, childMessages);
+            } else {
+                sink.emitMessagesImpl(context, baseElement, log, visitedSinks, null);
+            }
+        }
+    }
+
+    private List<Message> collectMessagesWithElementChildren(Set<MessageContainer> visitedSinks, Element e) {
+        if (visitedSinks.contains(this)) {
+            return Collections.emptyList();
+        }
+        visitedSinks.add(this);
+
+        List<Message> foundMessages = new ArrayList<>();
+        if (Utils.typeEquals(getMessageElement().asType(), e.asType())) {
+            foundMessages.addAll(getMessages());
+        }
+        for (MessageContainer sink : findChildContainers()) {
+            foundMessages.addAll(sink.collectMessagesWithElementChildren(visitedSinks, e));
+        }
+        return foundMessages;
+    }
+
+    private void verifyExpectedMessages(ProcessorContext context, Log log, List<Message> msgs) {
+        TypeElement expectError = context.getTruffleTypes().getExpectError();
+        if (expectError != null) {
+            Element element = getMessageElement();
+            AnnotationMirror mirror = Utils.findAnnotationMirror(element.getAnnotationMirrors(), expectError);
+            if (mirror != null) {
+                List<String> values = Utils.getAnnotationValueList(String.class, mirror, "value");
+                if (values == null) {
+                    values = Collections.emptyList();
+                }
+                if (values.size() != msgs.size()) {
+                    log.message(Kind.ERROR, element, mirror, Utils.getAnnotationValue(mirror, "value"), String.format("Error count expected %s but was %s.", values.size(), msgs.size()));
+                }
+            }
         }
     }
 
-    private void emitDefault(TypeElement baseType, Log log, Message message) {
+    private void emitDefault(ProcessorContext context, TypeElement baseType, Log log, Message message) {
+        Kind kind = message.getKind();
+
+        Element messageElement = getMessageElement();
+        AnnotationMirror messageAnnotation = getMessageAnnotation();
+        AnnotationValue messageValue = getMessageAnnotationValue();
+        if (message.getAnnotationValue() != null) {
+            messageValue = message.getAnnotationValue();
+        }
+
+        String text = message.getText();
+
         TypeElement rootEnclosing = Utils.findRootEnclosingType(getMessageElement());
-        if (rootEnclosing != null && Utils.typeEquals(baseType.asType(), rootEnclosing.asType()) && this == message.getOriginalContainer()) {
-            log.message(message.getKind(), getMessageElement(), getMessageAnnotation(), getMessageAnnotationValue(), message.getText());
-        } else {
+        TypeElement baseEnclosing = Utils.findRootEnclosingType(baseType);
+        if (rootEnclosing == null || !Utils.typeEquals(baseEnclosing.asType(), rootEnclosing.asType()) || this != message.getOriginalContainer()) {
+            // redirect message
             MessageContainer original = message.getOriginalContainer();
-            log.message(message.getKind(), baseType, null, null, wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText()));
+            messageElement = baseType;
+            messageAnnotation = null;
+            messageValue = null;
+            text = wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText());
         }
+
+        TypeElement expectError = context.getTruffleTypes().getExpectError();
+        if (expectError != null) {
+            AnnotationMirror mirror = Utils.findAnnotationMirror(messageElement.getAnnotationMirrors(), expectError);
+            if (mirror != null) {
+                List<String> expectedTexts = Utils.getAnnotationValueList(String.class, mirror, "value");
+                boolean found = false;
+                for (String expectedText : expectedTexts) {
+                    if (expectedText.endsWith("%") && text.startsWith(expectedText.substring(0, expectedText.length() - 1))) {
+                        found = true;
+                        break;
+                    } else if (text.equals(expectedText)) {
+                        found = true;
+                        break;
+                    }
+                }
+                if (!found) {
+                    log.message(kind, messageElement, mirror, Utils.getAnnotationValue(mirror, "value"), "Message expected one of '%s' but was '%s'.", expectedTexts, text);
+                } else {
+                    return;
+                }
+
+            }
+        }
+
+        log.message(kind, messageElement, messageAnnotation, messageValue, text);
     }
 
     private static String wrapText(Element element, AnnotationMirror mirror, String text) {
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/TemplateMethodParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/TemplateMethodParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/TemplateMethodParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -43,7 +43,7 @@
     protected final T template;
 
     private boolean emitErrors = true;
-    private boolean parseNullOnError = true;
+    private boolean parseNullOnError = false;
 
     public TemplateMethodParser(ProcessorContext context, T template) {
         this.template = template;
@@ -76,7 +76,7 @@
 
     public abstract MethodSpec createSpecification(ExecutableElement method, AnnotationMirror mirror);
 
-    public abstract E create(TemplateMethod method);
+    public abstract E create(TemplateMethod method, boolean invalid);
 
     public abstract boolean isParsable(ExecutableElement method);
 
@@ -104,7 +104,8 @@
             E parsedMethod = parse(method, mirror);
 
             if (method.getModifiers().contains(Modifier.PRIVATE) && emitErrors) {
-                parsedMethod.addError("Method must not be private.");
+                parsedMethod.addError("Method annotated with @%s must not be private.", getAnnotationType().getSimpleName());
+                parsedMethods.add(parsedMethod);
                 valid = false;
                 continue;
             }
@@ -142,7 +143,7 @@
         ActualParameter returnTypeMirror = matchParameter(returnTypeSpec, method.getReturnType(), template, 0, false);
         if (returnTypeMirror == null) {
             if (emitErrors) {
-                E invalidMethod = create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, Collections.<ActualParameter> emptyList()));
+                E invalidMethod = create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, Collections.<ActualParameter> emptyList()), true);
                 String expectedReturnType = returnTypeSpec.toSignatureString(true);
                 String actualReturnType = Utils.getSimpleName(method.getReturnType());
 
@@ -163,7 +164,7 @@
         List<ActualParameter> parameters = parseParameters(methodSpecification, parameterTypes);
         if (parameters == null) {
             if (isEmitErrors()) {
-                E invalidMethod = create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, Collections.<ActualParameter> emptyList()));
+                E invalidMethod = create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, Collections.<ActualParameter> emptyList()), true);
                 String message = String.format("Method signature %s does not match to the expected signature: \n%s", createActualSignature(methodSpecification, method),
                                 methodSpecification.toSignatureString(method.getSimpleName().toString()));
                 invalidMethod.addError(message);
@@ -173,7 +174,7 @@
             }
         }
 
-        return create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, parameters));
+        return create(new TemplateMethod(id, template, methodSpecification, method, annotation, returnTypeMirror, parameters), false);
     }
 
     private static String createActualSignature(MethodSpec spec, ExecutableElement method) {
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/GuardParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/GuardParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/GuardParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -79,7 +79,7 @@
     }
 
     @Override
-    public GuardData create(TemplateMethod method) {
+    public GuardData create(TemplateMethod method, boolean invalid) {
         GuardData guard = new GuardData(method, specialization, negated);
         /*
          * Update parameters in way that parameter specifications match again the node field names
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/ImplicitCastData.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/ImplicitCastData.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2012, 2012, 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.dsl.processor.typesystem;
+
+import com.oracle.truffle.dsl.processor.template.*;
+
+public class ImplicitCastData extends TemplateMethod {
+
+    public ImplicitCastData(TemplateMethod method) {
+        super(method);
+    }
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/ImplicitCastParser.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/ImplicitCastParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2012, 2012, 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.dsl.processor.typesystem;
+
+import java.lang.annotation.*;
+import java.util.*;
+
+import javax.lang.model.element.*;
+import javax.lang.model.type.*;
+
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.dsl.processor.*;
+import com.oracle.truffle.dsl.processor.template.*;
+
+public class ImplicitCastParser extends TypeSystemMethodParser<ImplicitCastData> {
+
+    public ImplicitCastParser(ProcessorContext context, TypeSystemData typeSystem) {
+        super(context, typeSystem);
+    }
+
+    @Override
+    public Class<? extends Annotation> getAnnotationType() {
+        return ImplicitCast.class;
+    }
+
+    @Override
+    public MethodSpec createSpecification(ExecutableElement method, AnnotationMirror mirror) {
+        List<TypeMirror> types = new ArrayList<>();
+        for (TypeData typeData : getTypeSystem().getTypes()) {
+            types.add(typeData.getPrimitiveType());
+        }
+        MethodSpec spec = new MethodSpec(new ParameterSpec("target", types));
+        spec.addRequired(new ParameterSpec("source", types)).setSignature(true);
+        return spec;
+    }
+
+    @Override
+    public ImplicitCastData create(TemplateMethod method, boolean invalid) {
+        return new ImplicitCastData(method);
+    }
+
+}
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCastParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCastParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCastParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -48,10 +48,25 @@
     }
 
     @Override
-    public TypeCastData create(TemplateMethod method) {
+    public TypeCastData create(TemplateMethod method, boolean invalid) {
+        if (invalid) {
+            return new TypeCastData(method, null, null);
+        }
+
         TypeData targetType = findTypeByMethodName(method, "as");
         ActualParameter parameter = method.findParameter("valueValue");
-        return new TypeCastData(method, parameter.getTypeSystemType(), targetType);
+
+        TypeData sourceType = null;
+        if (parameter != null) {
+            sourceType = getTypeSystem().findTypeData(parameter.getType());
+        }
+        TypeCastData cast = new TypeCastData(method, sourceType, targetType);
+
+        if (targetType != method.getReturnType().getTypeSystemType()) {
+            cast.addError("Cast type %s does not match to the returned type %s.", Utils.getSimpleName(targetType.getPrimitiveType()),
+                            method.getReturnType() != null ? Utils.getSimpleName(method.getReturnType().getTypeSystemType().getPrimitiveType()) : null);
+        }
+        return cast;
     }
 
     @Override
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCheckParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCheckParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeCheckParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -48,7 +48,7 @@
     }
 
     @Override
-    public TypeCheckData create(TemplateMethod method) {
+    public TypeCheckData create(TemplateMethod method, boolean invalid) {
         TypeData checkedType = findTypeByMethodName(method, "is");
         assert checkedType != null;
         ActualParameter parameter = method.findParameter("valueValue");
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemData.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemData.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemData.java	Fri Aug 30 14:07:59 2013 +0200
@@ -36,6 +36,9 @@
     private List<TypeMirror> primitiveTypeMirrors = new ArrayList<>();
     private List<TypeMirror> boxedTypeMirrors = new ArrayList<>();
 
+    private List<TypeCastData> casts;
+    private List<TypeCheckData> checks;
+
     private TypeMirror genericType;
     private TypeData voidType;
 
@@ -58,6 +61,14 @@
         }
     }
 
+    public void setCasts(List<TypeCastData> casts) {
+        this.casts = casts;
+    }
+
+    public void setChecks(List<TypeCheckData> checks) {
+        this.checks = checks;
+    }
+
     void setGenericType(TypeMirror genericType) {
         this.genericType = genericType;
     }
@@ -72,6 +83,12 @@
         if (types != null) {
             sinks.addAll(types);
         }
+        if (checks != null) {
+            sinks.addAll(checks);
+        }
+        if (casts != null) {
+            sinks.addAll(casts);
+        }
         return sinks;
     }
 
diff -r c121402a62d8 -r 1cd98fee2139 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemParser.java	Fri Aug 30 13:56:58 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemParser.java	Fri Aug 30 14:07:59 2013 +0200
@@ -37,7 +37,7 @@
 
 public class TypeSystemParser extends TemplateParser<TypeSystemData> {
 
-    public static final List<Class<TypeSystem>> ANNOTATIONS = Arrays.asList(TypeSystem.class);
+    public static final List<Class<? extends Annotation>> ANNOTATIONS = Arrays.asList(TypeSystem.class, ExpectError.class);
 
     public TypeSystemParser(ProcessorContext c) {
         super(c);
@@ -84,11 +84,17 @@
         verifyExclusiveMethodAnnotation(typeSystem, TypeCast.class, TypeCheck.class);
 
         List<Element> elements = new ArrayList<>(context.getEnvironment().getElementUtils().getAllMembers(templateType));
-
+        List<ImplicitCastData> implicitCasts = new ImplicitCastParser(context, typeSystem).parse(elements);
         List<TypeCastData> casts = new TypeCastParser(context, typeSystem).parse(elements);
         List<TypeCheckData> checks = new TypeCheckParser(context, typeSystem).parse(elements);
 
-        if (casts == null || checks == null) {
+        if (casts == null || checks == null || implicitCasts == null) {
+            return typeSystem;
+        }
+        typeSystem.setCasts(casts);
+        typeSystem.setChecks(checks);
+
+        if (typeSystem.hasErrors()) {
             return typeSystem;
         }