net.bytebuddy.implementation.auxiliary.TrivialType Maven / Gradle / Ivy
/*
* Copyright 2014 - Present 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.auxiliary;
import net.bytebuddy.ByteBuddy;
import net.bytebuddy.ClassFileVersion;
import net.bytebuddy.description.annotation.AnnotationDescription;
import net.bytebuddy.dynamic.DynamicType;
import net.bytebuddy.dynamic.scaffold.MethodGraph;
import net.bytebuddy.dynamic.scaffold.TypeValidation;
import net.bytebuddy.dynamic.scaffold.subclass.ConstructorStrategy;
import net.bytebuddy.implementation.MethodAccessorFactory;
import net.bytebuddy.utility.RandomString;
import java.util.Collections;
/**
* A trivial type that extends {@link java.lang.Object} without defining any fields, methods or constructors.
* This type is meant to be used as a marker type only.
*/
public enum TrivialType implements AuxiliaryType {
/**
* A trivial type that defines the {@link SignatureRelevant} annotation.
*/
SIGNATURE_RELEVANT(true),
/**
* A non-annotated trivial type.
*/
PLAIN(false);
/**
* Determines if this type determines the {@link SignatureRelevant} annotation.
*/
private final boolean eager;
/**
* Creates a new trivial type.
*
* @param eager Determines if this type determines the {@link SignatureRelevant} annotation.
*/
TrivialType(boolean eager) {
this.eager = eager;
}
/**
* {@inheritDoc}
*/
public String getSuffix() {
return RandomString.hashOf(name().hashCode());
}
/**
* {@inheritDoc}
*/
public DynamicType make(String auxiliaryTypeName,
ClassFileVersion classFileVersion,
MethodAccessorFactory methodAccessorFactory) {
return new ByteBuddy(classFileVersion)
.with(TypeValidation.DISABLED)
.with(MethodGraph.Empty.INSTANCE) // avoid parsing the graph
.subclass(Object.class, ConstructorStrategy.Default.NO_CONSTRUCTORS)
.annotateType(eager
? Collections.singletonList(AnnotationDescription.Builder.ofType(SignatureRelevant.class).build(false))
: Collections.emptyList())
.name(auxiliaryTypeName)
.modifiers(DEFAULT_TYPE_MODIFIER)
.make();
}
}