net.bytebuddy.matcher.MethodOverrideMatcher 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.matcher;
import net.bytebuddy.build.HashCodeAndEqualsPlugin;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.description.type.TypeDefinition;
import net.bytebuddy.description.type.TypeDescription;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import static net.bytebuddy.matcher.ElementMatchers.isVirtual;
/**
* A matcher that checks if any super type of a type declares a method with the same shape of a matched method.
*
* @param The type of the matched entity.
*/
@HashCodeAndEqualsPlugin.Enhance
public class MethodOverrideMatcher extends ElementMatcher.Junction.ForNonNullValues {
/**
* The matcher that is to be applied to the type that declares a method of the same shape.
*/
private final ElementMatcher matcher;
/**
* Creates a new method override matcher.
*
* @param matcher The matcher that is to be applied to the type that declares a method of the same shape.
*/
public MethodOverrideMatcher(ElementMatcher matcher) {
this.matcher = matcher;
}
/**
* {@inheritDoc}
*/
protected boolean doMatch(T target) {
Set duplicates = new HashSet();
for (TypeDefinition typeDefinition : target.getDeclaringType()) {
if (matches(target, typeDefinition) || matches(target, typeDefinition.getInterfaces(), duplicates)) {
return true;
}
}
return false;
}
/**
* Matches a method against a list of types.
*
* @param target The method that is matched as a target.
* @param typeDefinitions The type definitions to check if they declare a method with the same signature as {@code target}.
* @param duplicates A set containing duplicate interfaces that do not need to be revisited.
* @return {@code true} if any type defines a method with the same signature as the {@code target} method.
*/
private boolean matches(MethodDescription target, List typeDefinitions, Set duplicates) {
for (TypeDefinition anInterface : typeDefinitions) {
if (duplicates.add(anInterface.asErasure()) && (matches(target, anInterface) || matches(target, anInterface.getInterfaces(), duplicates))) {
return true;
}
}
return false;
}
/**
* Checks if a type declares a method with the same signature as {@code target}.
*
* @param target The method to be checked.
* @param typeDefinition The type to check for declaring a method with the same signature as {@code target}.
* @return {@code true} if the supplied type declares a compatible method.
*/
private boolean matches(MethodDescription target, TypeDefinition typeDefinition) {
for (MethodDescription methodDescription : typeDefinition.getDeclaredMethods().filter(isVirtual())) {
if (methodDescription.asSignatureToken().equals(target.asSignatureToken())) {
if (matcher.matches(typeDefinition.asGenericType())) {
return true;
} else {
break;
}
}
}
return false;
}
@Override
public String toString() {
return "isOverriddenFrom(" + matcher + ")";
}
}