--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemMethodParser.java	Mon Jul 01 20:58:32 2013 +0200
@@ -0,0 +1,66 @@
+/*
+ * 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 javax.lang.model.element.*;
+
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.dsl.processor.*;
+import com.oracle.truffle.dsl.processor.template.*;
+
+abstract class TypeSystemMethodParser<E extends TemplateMethod> extends TemplateMethodParser<TypeSystemData, E> {
+
+    public TypeSystemMethodParser(ProcessorContext context, TypeSystemData typeSystem) {
+        super(context, typeSystem);
+    }
+
+    @Override
+    public final boolean isParsable(ExecutableElement method) {
+        return Utils.findAnnotationMirror(getContext().getEnvironment(), method, getAnnotationType()) != null;
+    }
+
+    protected TypeData findTypeByMethodName(String methodName, String prefix) {
+        String typeName = methodName.substring(prefix.length(), methodName.length());
+        TypeData type = getTypeSystem().findType(typeName);
+        return type;
+    }
+
+    protected TypeData findTypeByMethodName(TemplateMethod method, String prefix) {
+        String methodName = method.getMethodName();
+        if (!methodName.startsWith(prefix)) {
+            String annotationName = Utils.getSimpleName(method.getMessageAnnotation().getAnnotationType());
+            method.addError("Methods annotated with %s must match the pattern '%s'.", annotationName, String.format("%s${typeName}", prefix));
+            return null;
+        }
+        String typeName = methodName.substring(prefix.length(), methodName.length());
+        TypeData type = getTypeSystem().findType(typeName);
+        if (type == null) {
+            String annotationName = TypeSystem.class.getSimpleName();
+            method.addError("Type '%s' is not declared in this @%s.", typeName, annotationName);
+            return null;
+        }
+
+        return type;
+    }
+
+}