81 lines
3.9 KiB
Java
81 lines
3.9 KiB
Java
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package fr.pandacube.lib.reflect;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.Arrays;
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/**
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* Wrapper for a class {@link Method}.
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* @param <T> the type of the class declaring the wrapped method.
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*/
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public final class ReflectMethod<T> extends ReflectMember<T, MethodIdentifier, Method, NoSuchMethodException> {
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/* package */ ReflectMethod(ReflectClass<T> c, MethodIdentifier methodId, boolean bypassFilter) throws NoSuchMethodException {
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super(c, methodId, bypassFilter);
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}
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@Override
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protected Method fetchFromClass(Class<T> clazz) throws NoSuchMethodException {
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return clazz.getDeclaredMethod(identifier.methodName(), identifier.parameters());
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}
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@Override
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protected Method fetchFromReflectClass(ReflectClass<?> rc) throws NoSuchMethodException {
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return rc.method(identifier, false).get();
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}
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@Override
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protected boolean isEqualOurElement(Method el) {
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return identifier.methodName().equals(el.getName()) && Arrays.equals(identifier.parameters(), el.getParameterTypes());
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}
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@Override
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protected String internalMethodNameElementArray() {
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return "getDeclaredMethods0";
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}
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@Override
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protected String internalMethodNameCopyElement() {
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return "copyMethod";
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}
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/**
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* Invokes this method on the specified instance with the specified parameters.
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* @param instance the instance on which to call the method.
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* @param values the parameters used for the method call.
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* @return the eventual return value of the method call.
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* @throws IllegalAccessException if the wrapped Method object is enforcing Java language access control and the
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* underlying method is inaccessible. Note that this {@link ReflectMethod}
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* automatically sets the {@link Method}’s accessible flag to true.
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* @throws IllegalArgumentException if the specified instance is not an instance of the class or interface declaring
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* the wrapped method (or a subclass or implementor thereof), or if there is any
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* problem with the method parameters (wrong number, wrong type, ...).
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* @throws NullPointerException if the specified instance is null and the field is an instance field.
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* @throws InvocationTargetException if the called method throws an exception.
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* @see Method#invoke(Object, Object...)
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*/
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public Object invoke(Object instance, Object... values) throws InvocationTargetException, IllegalAccessException {
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return get().invoke(instance, values);
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}
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/**
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* Invokes this static method with the specified parameters.
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* @param values the parameters used for the method call.
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* @return the eventual return value of the method call.
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* @throws IllegalAccessException if the wrapped Method object is enforcing Java language access control and the
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* underlying method is inaccessible. Note that this {@link ReflectMethod}
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* automatically sets the {@link Method}’s accessible flag to true.
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* @throws IllegalArgumentException if there is any problem with the method parameters (wrong number, wrong type,
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* ...).
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* @throws NullPointerException if the wrapped {@link Method} is actually an instance method. In this case,
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* {@link #invoke(Object, Object...)} should be called instead with a non-null first
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* parameter.
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* @throws InvocationTargetException if the called method throws an exception.
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* @see Method#invoke(Object, Object...)
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*/
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public Object invokeStatic(Object... values) throws InvocationTargetException, IllegalAccessException {
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return invoke(null, values);
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}
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}
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