/*
 *  This file is part of the X10 project (http://x10-lang.org).
 *
 *  This file is licensed to You under the Eclipse Public License (EPL);
 *  You may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *      http://www.opensource.org/licenses/eclipse-1.0.php
 *
 * This file was originally derived from the Polyglot extensible compiler framework.
 *
 *  (C) Copyright 2000-2007 Polyglot project group, Cornell University
 *  (C) Copyright IBM Corporation 2007-2012.
 */

package polyglot.types;

import java.util.List;


/**
 * An <code>EmptyResolver</code> is a resolver that always fails.
 */
public class EmptyResolver implements Resolver {
    protected String kind;

    public EmptyResolver() {
        this("Type or package");
    }

    public EmptyResolver(String kind) {
        this.kind = kind;
    }

    /**
     * Find a type object by name.
     */
    public List<Type> find(Matcher<Type> matcher) throws SemanticException {
        throw new SemanticException((kind != null ? (kind + " ") : "") +
                                    matcher.signature() + " not found.");
    }
}