org.apache.bytecode.MethodTable Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.bytecode;
import java.lang.reflect.Method;
import java.util.HashMap;
public class MethodTable {
private HashMap nameToMethodMap;
private ChainedParamReader cpr;
public MethodTable(Class cls) throws Exception {
cpr = new ChainedParamReader(cls);
nameToMethodMap = new HashMap();
loadMethods(cls);
}
/**
* To load all the methods in the given class by Java reflection
*
* @param cls
* @throws Exception
*/
private void loadMethods(Class cls) throws Exception {
Method [] methods = cls.getMethods();
for (int i = 0; i < methods.length; i++) {
Method method = methods[i];
if (method.isBridge()) {
continue;
}
nameToMethodMap.put(method.getName(), method);
}
}
public String [] getParameterNames(String methodName) {
Method method = (Method) nameToMethodMap.get(methodName);
if (method == null) {
return null;
}
return cpr.getParameterNames(method);
}
}