/*
 * Copyright 2001-2009 OFFIS, Tammo Freese
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.easymock.internal.matchers;

import java.io.Serializable;

import org.easymock.IArgumentMatcher;

public class InstanceOf implements IArgumentMatcher, Serializable {

    private static final long serialVersionUID = -551735356674347591L;

    private final Class<?> clazz;

    public InstanceOf(Class<?> clazz) {
        this.clazz = clazz;
    }

    public boolean matches(Object actual) {
        return (actual != null) && clazz.isAssignableFrom(actual.getClass());
    }

    public void appendTo(StringBuffer buffer) {
        buffer.append("isA(" + clazz.getName() + ")");
    }
}