--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/compiler/JDTCompiler.java	Mon Jul 01 20:58:32 2013 +0200
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 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.compiler;
+
+import javax.annotation.processing.*;
+import javax.lang.model.element.*;
+
+import com.oracle.truffle.dsl.processor.*;
+
+public class JDTCompiler extends AbstractCompiler {
+
+    public static boolean isValidElement(Element currentElement) {
+        try {
+            Class<?> elementClass = Class.forName("org.eclipse.jdt.internal.compiler.apt.model.ElementImpl");
+            return elementClass.isAssignableFrom(currentElement.getClass());
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    @Override
+    public String getMethodBody(ProcessingEnvironment env, ExecutableElement method) {
+        try {
+
+            char[] source = getSource(method);
+            if (source == null) {
+                return null;
+            }
+
+            /*
+             * AbstractMethodDeclaration decl =
+             * ((MethodBinding)(((ElementImpl)method)._binding)).sourceMethod(); int bodyStart =
+             * decl.bodyStart; int bodyEnd = decl.bodyEnd;
+             */
+            Object decl = method(field(method, "_binding"), "sourceMethod");
+            int bodyStart = (int) field(decl, "bodyStart");
+            int bodyEnd = (int) field(decl, "bodyEnd");
+
+            int length = bodyEnd - bodyStart;
+            char[] target = new char[length];
+            System.arraycopy(source, bodyStart, target, 0, length);
+
+            return new String(target);
+        } catch (Exception e) {
+            return Utils.printException(e);
+        }
+    }
+
+    private static char[] getSource(Element element) throws Exception {
+        /*
+         * Binding binding = ((ElementImpl)element)._binding; char[] source = null; if (binding
+         * instanceof MethodBinding) { source = ((MethodBinding)
+         * binding).sourceMethod().compilationResult.getCompilationUnit().getContents(); } else if
+         * (binding instanceof SourceTypeBinding) { source =
+         * ((SourceTypeBinding)binding).scope.referenceContext
+         * .compilationResult.compilationUnit.getContents(); } return source;
+         */
+
+        Object binding = field(element, "_binding");
+        Class<?> methodBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.MethodBinding");
+        Class<?> referenceBindingClass = Class.forName("org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding");
+
+        char[] source = null;
+        if (methodBindingClass.isAssignableFrom(binding.getClass())) {
+            Object sourceMethod = method(binding, "sourceMethod");
+            if (sourceMethod == null) {
+                return null;
+            }
+            source = (char[]) method(method(field(sourceMethod, "compilationResult"), "getCompilationUnit"), "getContents");
+        } else if (referenceBindingClass.isAssignableFrom(binding.getClass())) {
+            source = (char[]) method(field(field(field(field(binding, "scope"), "referenceContext"), "compilationResult"), "compilationUnit"), "getContents");
+        }
+        return source;
+    }
+
+    @Override
+    public String getHeaderComment(ProcessingEnvironment env, Element type) {
+        try {
+            char[] source = getSource(type);
+            if (source == null) {
+                return null;
+            }
+            return parseHeader(new String(source));
+        } catch (Exception e) {
+            return Utils.printException(e);
+        }
+    }
+
+}