--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/template/ParameterSpec.java	Fri Dec 21 10:44:31 2012 -0800
@@ -0,0 +1,97 @@
+/*
+ * 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.codegen.processor.template;
+
+import javax.lang.model.type.*;
+
+import com.oracle.truffle.codegen.processor.*;
+import com.oracle.truffle.codegen.processor.typesystem.*;
+
+public class ParameterSpec {
+
+    public enum Kind {
+        EXECUTE, SIGNATURE, SUPER_ATTRIBUTE, ATTRIBUTE, CONSTRUCTOR_FIELD, SHORT_CIRCUIT
+    }
+
+    public enum Cardinality {
+        ONE, MULTIPLE;
+    }
+
+    private final String name;
+    private final TypeMirror[] allowedTypes;
+    private final TypeMirror valueType;
+    private final Kind kind;
+    private final boolean optional;
+    private final Cardinality cardinality;
+
+    public ParameterSpec(String name, TypeMirror[] allowedTypes, TypeMirror valueType, Kind kind, boolean optional, Cardinality cardinality) {
+        this.valueType = valueType;
+        this.allowedTypes = allowedTypes;
+        this.name = name;
+        this.kind = kind;
+        this.optional = optional;
+        this.cardinality = cardinality;
+    }
+
+    public ParameterSpec(String name, TypeMirror singleFixedType, Kind kind, boolean optional) {
+        this(name, new TypeMirror[]{singleFixedType}, singleFixedType, kind, optional, Cardinality.ONE);
+    }
+
+    public ParameterSpec(String name, TypeSystemData typeSystem, Kind kind, boolean optional, Cardinality cardinality) {
+        this(name, typeSystem.getPrimitiveTypeMirrors(), typeSystem.getGenericType(), kind, optional, cardinality);
+    }
+
+    public final String getName() {
+        return name;
+    }
+
+    public Kind getKind() {
+        return kind;
+    }
+
+    public final boolean isOptional() {
+        return optional;
+    }
+
+    public final Cardinality getCardinality() {
+        return cardinality;
+    }
+
+    public TypeMirror[] getAllowedTypes() {
+        return allowedTypes;
+    }
+
+    public boolean matches(TypeMirror actualType) {
+        for (int i = 0; i < allowedTypes.length; i++) {
+            TypeMirror mirror = allowedTypes[i];
+            if (Utils.typeEquals(actualType, mirror)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public TypeMirror getValueType() {
+        return valueType;
+    }
+}