/*
 * Copyright 2014 - 2020 Rafael Winterhalter
 *
 * 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 net.bytebuddy.implementation.bind.annotation;

import net.bytebuddy.description.annotation.AnnotationDescription;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.description.method.ParameterDescription;
import net.bytebuddy.implementation.Implementation;
import net.bytebuddy.implementation.bind.MethodDelegationBinder;
import net.bytebuddy.implementation.bytecode.assign.Assigner;
import net.bytebuddy.implementation.bytecode.constant.DefaultValue;

import java.lang.annotation.*;

Binds the parameter type's default value to the annotated parameter, i.e. null or a numeric value representing zero.
See Also:
/** * Binds the parameter type's default value to the annotated parameter, i.e. {@code null} or a numeric value * representing zero. * * @see net.bytebuddy.implementation.MethodDelegation * @see net.bytebuddy.implementation.bind.annotation.TargetMethodAnnotationDrivenBinder */
@Documented @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.PARAMETER) public @interface Empty {
A binder for the Empty annotation.
/** * A binder for the {@link net.bytebuddy.implementation.bind.annotation.Empty} annotation. */
enum Binder implements TargetMethodAnnotationDrivenBinder.ParameterBinder<Empty> {
The singleton instance.
/** * The singleton instance. */
INSTANCE;
{@inheritDoc}
/** * {@inheritDoc} */
public Class<Empty> getHandledType() { return Empty.class; }
{@inheritDoc}
/** * {@inheritDoc} */
public MethodDelegationBinder.ParameterBinding<?> bind(AnnotationDescription.Loadable<Empty> annotation, MethodDescription source, ParameterDescription target, Implementation.Target implementationTarget, Assigner assigner, Assigner.Typing typing) { return new MethodDelegationBinder.ParameterBinding.Anonymous(DefaultValue.of(target.getType().asErasure())); } } }