99 lines
2.8 KiB
Java
99 lines
2.8 KiB
Java
/**
|
|
* Copyright (c) 2011-2019, James Zhan 詹波 (jfinal@126.com).
|
|
*
|
|
* 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.jfinal.template.expr.ast;
|
|
|
|
import java.lang.reflect.Array;
|
|
import java.lang.reflect.Method;
|
|
import java.lang.reflect.Modifier;
|
|
|
|
/**
|
|
* MethodInfo
|
|
*/
|
|
public class MethodInfo {
|
|
|
|
protected final Long key;
|
|
protected final Class<?> clazz;
|
|
protected final Method method;
|
|
|
|
protected final boolean isVarArgs;
|
|
protected final Class<?>[] paraTypes;
|
|
|
|
public MethodInfo(Long key, Class<?> clazz, Method method) {
|
|
this.key = key;
|
|
this.clazz = clazz;
|
|
this.method = method;
|
|
this.isVarArgs = method.isVarArgs();
|
|
this.paraTypes = method.getParameterTypes();
|
|
}
|
|
|
|
public Object invoke(Object target, Object... args) throws ReflectiveOperationException {
|
|
if (isVarArgs) {
|
|
return invokeVarArgsMethod(target, args);
|
|
} else {
|
|
return method.invoke(target, args);
|
|
}
|
|
}
|
|
|
|
protected Object invokeVarArgsMethod(Object target, Object[] argValues) throws ReflectiveOperationException {
|
|
Object[] finalArgValues = new Object[paraTypes.length];
|
|
|
|
int fixedParaLength = paraTypes.length - 1;
|
|
System.arraycopy(argValues, 0, finalArgValues, 0, fixedParaLength);
|
|
Class<?> varParaComponentType = paraTypes[paraTypes.length - 1].getComponentType();
|
|
Object varParaValues = Array.newInstance(varParaComponentType, argValues.length - fixedParaLength);
|
|
int p = 0;
|
|
for (int i=fixedParaLength; i<argValues.length; i++) {
|
|
Array.set(varParaValues, p++, argValues[i]);
|
|
}
|
|
finalArgValues[paraTypes.length - 1] = varParaValues;
|
|
return method.invoke(target, finalArgValues);
|
|
}
|
|
|
|
public Long getKey() {
|
|
return key;
|
|
}
|
|
|
|
public String getName() {
|
|
return method.getName();
|
|
}
|
|
|
|
public boolean isStatic() {
|
|
return Modifier.isStatic(method.getModifiers());
|
|
}
|
|
|
|
public boolean isVarArgs() {
|
|
return isVarArgs;
|
|
}
|
|
|
|
protected Class<?>[] getParameterTypes() {
|
|
return paraTypes;
|
|
}
|
|
|
|
public String toString() {
|
|
StringBuilder ret = new StringBuilder(clazz.getName()).append(".").append(method.getName()).append("(");
|
|
for (int i=0; i<paraTypes.length; i++) {
|
|
if (i > 0) {
|
|
ret.append(", ");
|
|
}
|
|
ret.append(paraTypes[i].getName());
|
|
}
|
|
return ret.append(")").toString();
|
|
}
|
|
}
|
|
|
|
|