HackedMethod0.java

package net.jeeeyul.eclipse.themes.rendering.internal;

import java.lang.reflect.Method;

/**
 * Abstracts method that has no argument.
 * 
 * @param <T>
 *            The type declared method.
 * @param <R>
 *            Return type of the method.
 * @author Jeeeyul
 */
public class HackedMethod0<T, R> {
	private Class<T> type;
	private String name;
	private Method method;

	/**
	 * 
	 * @param type
	 *            Declaring class of method.
	 * @param name
	 *            method name.
	 */
	public HackedMethod0(Class<T> type, String name) {
		this.type = type;
		this.name = name;
	}

	/**
	 * 
	 * @return Java reflection {@link Method}.
	 */
	public Method getMethod() {
		if (method == null) {
			try {
				method = type.getDeclaredMethod(name);
				method.setAccessible(true);
			} catch (Exception e) {
				throw new RuntimeException(e);

			}
		}
		return method;
	}

	/**
	 * Invokes method.
	 * 
	 * @param object
	 *            instance to invoke method.
	 * @return result of method invocation.
	 */
	@SuppressWarnings("unchecked")
	public R invoke(T object) {
		try {
			return (R) getMethod().invoke(object);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

}