/*
 * 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.matcher;

import net.bytebuddy.build.HashCodeAndEqualsPlugin;
import net.bytebuddy.description.type.TypeDefinition;
import net.bytebuddy.description.type.TypeDescription;

import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

An element matcher that matches a super type.
Type parameters:
  • <T> – The type of the matched entity.
/** * An element matcher that matches a super type. * * @param <T> The type of the matched entity. */
@HashCodeAndEqualsPlugin.Enhance public class HasSuperTypeMatcher<T extends TypeDescription> extends ElementMatcher.Junction.AbstractBase<T> {
The matcher to apply to any super type of the matched type.
/** * The matcher to apply to any super type of the matched type. */
private final ElementMatcher<? super TypeDescription.Generic> matcher;
Creates a new matcher for a super type.
Params:
  • matcher – The matcher to apply to any super type of the matched type.
/** * Creates a new matcher for a super type. * * @param matcher The matcher to apply to any super type of the matched type. */
public HasSuperTypeMatcher(ElementMatcher<? super TypeDescription.Generic> matcher) { this.matcher = matcher; }
{@inheritDoc}
/** * {@inheritDoc} */
public boolean matches(T target) { Set<TypeDescription> previous = new HashSet<TypeDescription>(); for (TypeDefinition typeDefinition : target) { if (!previous.add(typeDefinition.asErasure())) { // Main type can be an interface. return false; // Avoids a life-lock when encountering a recursive type-definition. } else if (matcher.matches(typeDefinition.asGenericType())) { return true; } LinkedList<TypeDefinition> interfaceTypes = new LinkedList<TypeDefinition>(typeDefinition.getInterfaces()); while (!interfaceTypes.isEmpty()) { TypeDefinition interfaceType = interfaceTypes.removeFirst(); if (previous.add(interfaceType.asErasure())) { if (matcher.matches(interfaceType.asGenericType())) { return true; } else { interfaceTypes.addAll(interfaceType.getInterfaces()); } } } } return false; } @Override public String toString() { return "hasSuperType(" + matcher + ")"; } }