--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/ProcessorContext.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,149 @@
+/*
+ * 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;
+
+import java.util.*;
+
+import javax.annotation.processing.*;
+import javax.lang.model.element.*;
+import javax.lang.model.type.*;
+import javax.lang.model.util.*;
+
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.dsl.processor.java.*;
+import com.oracle.truffle.dsl.processor.java.model.*;
+import com.oracle.truffle.dsl.processor.model.*;
+
+/**
+ * THIS IS NOT PUBLIC API.
+ */
+public class ProcessorContext {
+
+    private final ProcessingEnvironment environment;
+
+    private final Map<String, Template> models = new HashMap<>();
+
+    private final ProcessCallback callback;
+    private final Log log;
+    private final TruffleTypes truffleTypes;
+
+    ProcessorContext(ProcessingEnvironment env, ProcessCallback callback) {
+        this.environment = env;
+        this.callback = callback;
+        this.log = new Log(environment);
+        this.truffleTypes = new TruffleTypes(this);
+    }
+
+    public TruffleTypes getTruffleTypes() {
+        return truffleTypes;
+    }
+
+    public Log getLog() {
+        return log;
+    }
+
+    public ProcessingEnvironment getEnvironment() {
+        return environment;
+    }
+
+    public boolean containsTemplate(TypeElement element) {
+        return models.containsKey(ElementUtils.getQualifiedName(element));
+    }
+
+    public void registerTemplate(TypeElement element, Template model) {
+        models.put(ElementUtils.getQualifiedName(element), model);
+    }
+
+    public Template getTemplate(TypeMirror templateTypeMirror, boolean invokeCallback) {
+        String qualifiedName = ElementUtils.getQualifiedName(templateTypeMirror);
+        Template model = models.get(qualifiedName);
+        if (model == null && invokeCallback) {
+            callback.callback(ElementUtils.fromTypeMirror(templateTypeMirror));
+            model = models.get(qualifiedName);
+        }
+        return model;
+    }
+
+    public DeclaredType getDeclaredType(Class<?> element) {
+        return (DeclaredType) ElementUtils.getType(environment, element);
+    }
+
+    public boolean isType(TypeMirror type, Class<?> clazz) {
+        return ElementUtils.typeEquals(type, getType(clazz));
+    }
+
+    public TypeMirror getType(Class<?> element) {
+        return ElementUtils.getType(environment, element);
+    }
+
+    public interface ProcessCallback {
+
+        void callback(TypeElement template);
+
+    }
+
+    public TypeMirror reloadTypeElement(TypeElement type) {
+        return getType(type.getQualifiedName().toString());
+    }
+
+    private TypeMirror getType(String className) {
+        TypeElement element = environment.getElementUtils().getTypeElement(className);
+        if (element != null) {
+            return element.asType();
+        }
+        return null;
+    }
+
+    public TypeMirror reloadType(TypeMirror type) {
+        if (type instanceof CodeTypeMirror) {
+            return type;
+        } else if (type.getKind().isPrimitive()) {
+            return type;
+        }
+        Types types = getEnvironment().getTypeUtils();
+
+        switch (type.getKind()) {
+            case ARRAY:
+                return types.getArrayType(reloadType(((ArrayType) type).getComponentType()));
+            case WILDCARD:
+                return types.getWildcardType(((WildcardType) type).getExtendsBound(), ((WildcardType) type).getSuperBound());
+            case DECLARED:
+                return reloadTypeElement((TypeElement) (((DeclaredType) type).asElement()));
+        }
+        return type;
+    }
+
+    private static final ThreadLocal<ProcessorContext> instance = new ThreadLocal<>();
+
+    public static void setThreadLocalInstance(ProcessorContext context) {
+        instance.set(context);
+    }
+
+    public static ProcessorContext getInstance() {
+        return instance.get();
+    }
+
+    public List<TypeMirror> getFrameTypes() {
+        return Arrays.asList(getType(VirtualFrame.class), getType(MaterializedFrame.class), getType(Frame.class));
+    }
+}