--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/ParameterSpec.java	Mon Aug 11 15:57:14 2014 +0200
@@ -0,0 +1,135 @@
+/*
+ * 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 java.util.*;
+
+import javax.lang.model.type.*;
+
+import com.oracle.truffle.dsl.processor.java.*;
+import com.oracle.truffle.dsl.processor.model.MethodSpec.TypeDef;
+import com.oracle.truffle.dsl.processor.parser.*;
+
+public class ParameterSpec {
+
+    private final String name;
+    private final List<TypeMirror> allowedTypes;
+
+    /** Type is bound to local final variable. */
+    private boolean local;
+    private boolean signature;
+
+    /** Optional bound execution of node. */
+    private NodeExecutionData execution;
+    private TypeDef typeDefinition;
+
+    public ParameterSpec(String name, List<TypeMirror> allowedTypes) {
+        this.name = name;
+        this.allowedTypes = allowedTypes;
+    }
+
+    public ParameterSpec(String name, TypeMirror type) {
+        this(name, Arrays.asList(type));
+    }
+
+    public ParameterSpec(ParameterSpec o, List<TypeMirror> allowedTypes) {
+        this.name = o.name;
+        this.local = o.local;
+        this.typeDefinition = o.typeDefinition;
+        this.execution = o.execution;
+        this.signature = o.signature;
+        this.allowedTypes = allowedTypes;
+    }
+
+    public NodeExecutionData getExecution() {
+        return execution;
+    }
+
+    public void setExecution(NodeExecutionData executionData) {
+        this.execution = executionData;
+        this.signature = execution != null;
+    }
+
+    public void setSignature(boolean signature) {
+        this.signature = signature;
+    }
+
+    void setTypeDefinition(TypeDef typeDefinition) {
+        this.typeDefinition = typeDefinition;
+    }
+
+    TypeDef getTypeDefinition() {
+        return typeDefinition;
+    }
+
+    public void setLocal(boolean local) {
+        this.local = local;
+    }
+
+    public boolean isSignature() {
+        return signature;
+    }
+
+    public boolean isLocal() {
+        return local;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public List<TypeMirror> getAllowedTypes() {
+        return allowedTypes;
+    }
+
+    public boolean matches(TypeMirror actualType) {
+        for (TypeMirror mirror : allowedTypes) {
+            if (ElementUtils.typeEquals(actualType, mirror)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toSignatureString(false);
+    }
+
+    public String toSignatureString(boolean typeOnly) {
+        StringBuilder builder = new StringBuilder();
+        if (typeDefinition != null) {
+            builder.append("<" + typeDefinition.getName() + ">");
+        } else if (getAllowedTypes().size() >= 1) {
+            builder.append(ElementUtils.getSimpleName(getAllowedTypes().get(0)));
+        } else {
+            builder.append("void");
+        }
+        if (!typeOnly) {
+            builder.append(" ");
+            builder.append(getName());
+        }
+        return builder.toString();
+    }
+
+}