/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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 com.alibaba.citrus.util.templatelite;
import static com.alibaba.citrus.util.Assert.*;
import static com.alibaba.citrus.util.StringUtil.*;
/** 调用指定visitor中的visitPlaceholder()方法。 */
public class FallbackToVisitor {
private final Object visitor;
public FallbackToVisitor(Object visitor) {
this.visitor = assertNotNull(visitor, "fallback to visitor");
}
public Object getVisitor() {
return visitor;
}
public boolean visitPlaceholder(String name, Object[] params) throws Exception {
try {
visitor.getClass().getMethod("visit" + capitalize(name)).invoke(visitor);
} catch (NoSuchMethodException e) {
if (visitor instanceof FallbackVisitor) {
return ((FallbackVisitor) visitor).visitPlaceholder(name, params);
} else {
return false;
}
}
return true;
}
}