--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/Parameter.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,119 @@
+/*
+ * 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.model;
+
+import javax.lang.model.element.*;
+import javax.lang.model.type.*;
+
+public final class Parameter {
+
+    private final ParameterSpec specification;
+    private TemplateMethod method;
+    private String localName;
+    private final int specificationVarArgsIndex;
+    private final int typeVarArgsIndex;
+    private final VariableElement variableElement;
+    private final TypeMirror type;
+
+    public Parameter(ParameterSpec specification, VariableElement variableElement, int specificationVarArgsIndex, int typeVarArgsIndex) {
+        this.specification = specification;
+        this.variableElement = variableElement;
+        this.type = variableElement.asType();
+        this.specificationVarArgsIndex = specificationVarArgsIndex;
+
+        String valueName = specification.getName() + "Value";
+        if (specificationVarArgsIndex > -1) {
+            valueName += specificationVarArgsIndex;
+        }
+        this.typeVarArgsIndex = typeVarArgsIndex;
+        this.localName = valueName;
+    }
+
+    public Parameter(Parameter parameter) {
+        this.specification = parameter.specification;
+        this.specificationVarArgsIndex = parameter.specificationVarArgsIndex;
+        this.localName = parameter.localName;
+        this.typeVarArgsIndex = parameter.typeVarArgsIndex;
+        this.variableElement = parameter.variableElement;
+        this.type = parameter.type;
+    }
+
+    public Parameter(Parameter parameter, TypeMirror newType) {
+        this.specification = parameter.specification;
+        this.specificationVarArgsIndex = parameter.specificationVarArgsIndex;
+        this.localName = parameter.localName;
+        this.typeVarArgsIndex = parameter.typeVarArgsIndex;
+        this.variableElement = parameter.variableElement;
+        this.type = newType;
+    }
+
+    public void setLocalName(String localName) {
+        this.localName = localName;
+    }
+
+    public VariableElement getVariableElement() {
+        return variableElement;
+    }
+
+    public int getTypeVarArgsIndex() {
+        return typeVarArgsIndex;
+    }
+
+    public int getSpecificationVarArgsIndex() {
+        return specificationVarArgsIndex;
+    }
+
+    public String getLocalName() {
+        return localName;
+    }
+
+    void setMethod(TemplateMethod method) {
+        this.method = method;
+    }
+
+    public ParameterSpec getSpecification() {
+        return specification;
+    }
+
+    public TemplateMethod getMethod() {
+        return method;
+    }
+
+    public TypeMirror getType() {
+        return type;
+    }
+
+    public boolean isTypeVarArgs() {
+        return typeVarArgsIndex >= 0;
+    }
+
+    public Parameter getPreviousParameter() {
+        return method.getPreviousParam(this);
+    }
+
+    @Override
+    public String toString() {
+        return "Parameter [localName=" + localName + ", type=" + getType() + ", variableElement=" + variableElement + "]";
+    }
+
+}