mirror of
https://git.huckle.dev/Huckles-Minecraft-Archive/jpexs-decompiler.git
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trunk contents moved to root
This commit is contained in:
Jindra Petřík
@@ -0,0 +1,463 @@
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/*
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* @(#)Methods.java
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*
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* Copyright (c) 2011 Werner Randelshofer, Goldau, Switzerland.
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* All rights reserved.
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*
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* You may not use, copy or modify this file, except in compliance with the
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* license agreement you entered into with Werner Randelshofer.
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* For details see accompanying license terms.
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*/
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package org.monte.media.util;
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import java.lang.reflect.*;
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/**
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* Methods contains convenience methods for method invocations using
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* java.lang.reflect.
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*
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* @author Werner Randelshofer
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* @version $Id: Methods.java 299 2013-01-03 07:40:18Z werner $
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*/
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@SuppressWarnings("unchecked")
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public class Methods {
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/**
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* Prevent instance creation.
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*/
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private Methods() {
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}
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/**
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* Invokes the specified accessible parameterless method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @return The return value of the method.
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* @return NoSuchMethodException if the method does not exist or is not
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* accessible.
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*/
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public static Object invoke(Object obj, String methodName)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[0]);
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Object result = method.invoke(obj, new Object[0]);
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return result;
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified accessible method with a string parameter if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param stringParameter The String parameter
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* @return The return value of the method or METHOD_NOT_FOUND.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invoke(Object obj, String methodName, String stringParameter)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[] { String.class });
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Object result = method.invoke(obj, new Object[] { stringParameter });
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return result;
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified accessible parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @return The return value of the method or METHOD_NOT_FOUND.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invokeStatic(Class clazz, String methodName)
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throws NoSuchMethodException {
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try {
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Method method = clazz.getMethod(methodName, new Class[0]);
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Object result = method.invoke(null, new Object[0]);
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return result;
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified accessible parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @return The return value of the method.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invokeStatic(String clazz, String methodName)
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throws NoSuchMethodException {
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try {
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return invokeStatic(Class.forName(clazz), methodName);
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} catch (ClassNotFoundException e) {
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throw new NoSuchMethodException("class "+clazz+" not found");
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}
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}
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/**
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* Invokes the specified parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @param type The parameter type.
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* @param value The parameter value.
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* @return The return value of the method.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invokeStatic(Class clazz, String methodName, Class type, Object value)
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throws NoSuchMethodException {
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return invokeStatic(clazz,methodName,new Class[]{type},new Object[]{value});
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}
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/**
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* Invokes the specified parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @param types The parameter types.
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* @param values The parameter values.
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* @return The return value of the method.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invokeStatic(Class clazz, String methodName, Class[] types, Object[] values)
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throws NoSuchMethodException {
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try {
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Method method = clazz.getMethod(methodName, types);
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Object result = method.invoke(null, values);
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return result;
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @param types The parameter types.
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* @param values The parameter values.
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* @return The return value of the method.
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* @return NoSuchMethodException if the method does not exist or is not accessible.
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*/
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public static Object invokeStatic(String clazz, String methodName,
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Class[] types, Object[] values)
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throws NoSuchMethodException {
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try {
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return invokeStatic(Class.forName(clazz), methodName, types, values);
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} catch (ClassNotFoundException e) {
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throw new NoSuchMethodException("class "+clazz+" not found");
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}
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}
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/**
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* Invokes the specified parameterless method if it exists.
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*
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* @param clazz The class on which to invoke the method.
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* @param methodName The name of the method.
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* @param types The parameter types.
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* @param values The parameter values.
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* @param defaultValue The default value.
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* @return The return value of the method or the default value if the method
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* does not exist or is not accessible.
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*/
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public static Object invokeStatic(String clazz, String methodName,
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Class[] types, Object[] values, Object defaultValue) {
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try {
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return invokeStatic(Class.forName(clazz), methodName, types, values);
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} catch (ClassNotFoundException e) {
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return defaultValue;
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} catch (NoSuchMethodException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified getter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param defaultValue This value is returned, if the method does not exist.
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* @return The value returned by the getter method or the default value.
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*/
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public static int invokeGetter(Object obj, String methodName, int defaultValue) {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[0]);
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Object result = method.invoke(obj, new Object[0]);
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return ((Integer) result).intValue();
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} catch (NoSuchMethodException e) {
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return defaultValue;
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} catch (IllegalAccessException e) {
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return defaultValue;
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} catch (InvocationTargetException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified getter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param defaultValue This value is returned, if the method does not exist.
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* @return The value returned by the getter method or the default value.
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*/
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public static long invokeGetter(Object obj, String methodName, long defaultValue) {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[0]);
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Object result = method.invoke(obj, new Object[0]);
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return ((Long) result).longValue();
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} catch (NoSuchMethodException e) {
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return defaultValue;
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} catch (IllegalAccessException e) {
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return defaultValue;
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} catch (InvocationTargetException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified getter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param defaultValue This value is returned, if the method does not exist.
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* @return The value returned by the getter method or the default value.
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*/
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public static boolean invokeGetter(Object obj, String methodName, boolean defaultValue) {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[0]);
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Object result = method.invoke(obj, new Object[0]);
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return ((Boolean) result).booleanValue();
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} catch (NoSuchMethodException e) {
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return defaultValue;
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} catch (IllegalAccessException e) {
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return defaultValue;
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} catch (InvocationTargetException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified getter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param defaultValue This value is returned, if the method does not exist.
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* @return The value returned by the getter method or the default value.
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*/
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public static Object invokeGetter(Object obj, String methodName, Object defaultValue) {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[0]);
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Object result = method.invoke(obj, new Object[0]);
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return result;
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} catch (NoSuchMethodException e) {
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return defaultValue;
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} catch (IllegalAccessException e) {
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return defaultValue;
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} catch (InvocationTargetException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified getter method if it exists.
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*
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* @param clazz The object on which to invoke the method.
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* @param methodName The name of the method.
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* @param defaultValue This value is returned, if the method does not exist.
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* @return The value returned by the getter method or the default value.
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*/
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public static boolean invokeStaticGetter(Class clazz, String methodName, boolean defaultValue) {
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try {
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Method method = clazz.getMethod(methodName, new Class[0]);
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Object result = method.invoke(null, new Object[0]);
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return ((Boolean) result).booleanValue();
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} catch (NoSuchMethodException e) {
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return defaultValue;
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} catch (IllegalAccessException e) {
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return defaultValue;
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} catch (InvocationTargetException e) {
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return defaultValue;
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}
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}
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/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static Object invoke(Object obj, String methodName, boolean newValue)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[] { Boolean.TYPE} );
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return method.invoke(obj, new Object[] { newValue});
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static Object invoke(Object obj, String methodName, int newValue)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[] { Integer.TYPE} );
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return method.invoke(obj, new Object[] { newValue});
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static Object invoke(Object obj, String methodName, float newValue)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[] { Float.TYPE} );
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return method.invoke(obj, new Object[] { new Float(newValue)});
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static Object invoke(Object obj, String methodName, Class clazz, Object newValue)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, new Class[] { clazz } );
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return method.invoke(obj, new Object[] { newValue});
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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throw new InternalError(e.getMessage());
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}
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}
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/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static Object invoke(Object obj, String methodName, Class[] clazz, Object... newValue)
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throws NoSuchMethodException {
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try {
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Method method = obj.getClass().getMethod(methodName, clazz );
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return method.invoke(obj, newValue);
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} catch (IllegalAccessException e) {
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throw new NoSuchMethodException(methodName+" is not accessible");
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} catch (InvocationTargetException e) {
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// The method is not supposed to throw exceptions
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InternalError error = new InternalError(e.getMessage());
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error.initCause((e.getCause() != null) ? e.getCause() : e);
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throw error;
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}
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}
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/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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* @param methodName The name of the method.
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*/
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public static void invokeIfExists(Object obj, String methodName) {
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try {
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invoke(obj, methodName);
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} catch (NoSuchMethodException e) {
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// ignore
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||||
}
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||||
}
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||||
/**
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* Invokes the specified setter method if it exists.
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*
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* @param obj The object on which to invoke the method.
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||||
* @param methodName The name of the method.
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||||
*/
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||||
public static void invokeIfExists(Object obj, String methodName, float newValue) {
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||||
try {
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invoke(obj, methodName, newValue);
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||||
} catch (NoSuchMethodException e) {
|
||||
// ignore
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||||
}
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||||
}
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||||
/**
|
||||
* Invokes the specified method if it exists.
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||||
*
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||||
* @param obj The object on which to invoke the method.
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||||
* @param methodName The name of the method.
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||||
*/
|
||||
public static void invokeIfExists(Object obj, String methodName, boolean newValue) {
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||||
try {
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||||
invoke(obj, methodName, newValue);
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||||
} catch (NoSuchMethodException e) {
|
||||
// ignore
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||||
}
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||||
}
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||||
/**
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||||
* Invokes the specified setter method if it exists.
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||||
*
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||||
* @param obj The object on which to invoke the method.
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||||
* @param methodName The name of the method.
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||||
*/
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||||
public static void invokeIfExists(Object obj, String methodName, Class clazz, Object newValue) {
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||||
try {
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||||
invoke(obj, methodName, clazz, newValue);
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||||
} catch (NoSuchMethodException e) {
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Invokes the specified setter method if it exists.
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||||
*
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||||
* @param obj The object on which to invoke the method.
|
||||
* @param methodName The name of the method.
|
||||
*/
|
||||
public static void invokeIfExistsWithEnum(Object obj, String methodName, String enumClassName, String enumValueName) {
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||||
try {
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||||
Class enumClass = Class.forName(enumClassName);
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||||
Object enumValue = invokeStatic("java.lang.Enum", "valueOf", new Class[] {Class.class, String.class},
|
||||
new Object[] {enumClass, enumValueName}
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||||
);
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||||
invoke(obj, methodName, enumClass, enumValue);
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||||
} catch (ClassNotFoundException e) {
|
||||
// ignore
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||||
e.printStackTrace();
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||||
} catch (NoSuchMethodException e) {
|
||||
// ignore
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
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