net.bytebuddy.matcher.LatentMatcher Maven / Gradle / Ivy
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Byte Buddy is a Java library for creating Java classes at run time.
This artifact is a build of Byte Buddy with a remaining dependency onto ASM.
You should never depend on this module without repackaging Byte Buddy and ASM into your own namespace.
/*
* 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.field.FieldDescription;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.description.type.RecordComponentDescription;
import net.bytebuddy.description.type.TypeDescription;
import java.util.Arrays;
import java.util.List;
import static net.bytebuddy.matcher.ElementMatchers.*;
/**
* A latent matcher that resolves an {@link ElementMatcher} after supplying a type description.
*
* @param The type of the matched element.
*/
public interface LatentMatcher {
/**
* Resolves the element matcher this instance represents for the supplied type description.
*
* @param typeDescription The type description for which the represented matcher should be resolved.
* @return An {@link ElementMatcher} that represents this matcher's resolved form.
*/
ElementMatcher resolve(TypeDescription typeDescription);
/**
* A latent matching methods that are declared by the resolved type.
*/
enum ForSelfDeclaredMethod implements LatentMatcher {
/**
* Matches any method declared by the resolved type.
*/
DECLARED(false),
/**
* Matches any method not declared by the resolved type.
*/
NOT_DECLARED(true);
/**
* {@code true} if the matcher is inverted.
*/
private final boolean inverted;
/**
* Creates a new latent matcher for a self-declared method.
*
* @param inverted {@code true} if the matcher is inverted.
*/
ForSelfDeclaredMethod(boolean inverted) {
this.inverted = inverted;
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
public ElementMatcher resolve(TypeDescription typeDescription) {
// Casting is required by some Java 6 compilers.
return (ElementMatcher) (inverted
? not(isDeclaredBy(typeDescription))
: isDeclaredBy(typeDescription));
}
}
/**
* A latent matcher representing an already resolved {@link ElementMatcher}.
*
* @param The type of the matched element.
*/
@HashCodeAndEqualsPlugin.Enhance
class Resolved implements LatentMatcher {
/**
* The resolved matcher.
*/
private final ElementMatcher matcher;
/**
* Creates a new resolved latent matcher.
*
* @param matcher The resolved matcher.
*/
public Resolved(ElementMatcher matcher) {
this.matcher = matcher;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
return matcher;
}
}
/**
* A latent matcher where the field token is being attached to the supplied type description before matching.
*/
@HashCodeAndEqualsPlugin.Enhance
class ForFieldToken implements LatentMatcher {
/**
* A token representing the field being matched.
*/
private final FieldDescription.Token token;
/**
* Creates a new latent matcher for a field token.
*
* @param token A token representing the field being matched.
*/
public ForFieldToken(FieldDescription.Token token) {
this.token = token;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
return new ResolvedMatcher(token.asSignatureToken(typeDescription));
}
/**
* A resolved matcher of a latent field matcher for a field token.
*/
@HashCodeAndEqualsPlugin.Enhance
protected static class ResolvedMatcher extends ElementMatcher.Junction.ForNonNullValues {
/**
* The signature token representing the matched field.
*/
private final FieldDescription.SignatureToken signatureToken;
/**
* Creates a new resolved matcher.
*
* @param signatureToken The signature token representing the matched field.
*/
protected ResolvedMatcher(FieldDescription.SignatureToken signatureToken) {
this.signatureToken = signatureToken;
}
/**
* {@inheritDoc}
*/
protected boolean doMatch(FieldDescription target) {
return target.asSignatureToken().equals(signatureToken);
}
}
}
/**
* A latent matcher where the method token is being attached to the supplied type description before matching.
*/
@HashCodeAndEqualsPlugin.Enhance
class ForMethodToken implements LatentMatcher {
/**
* A token representing the method being matched.
*/
private final MethodDescription.Token token;
/**
* Creates a new latent matcher for a method token.
*
* @param token A token representing the method being matched.
*/
public ForMethodToken(MethodDescription.Token token) {
this.token = token;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
return new ResolvedMatcher(token.asSignatureToken(typeDescription));
}
/**
* A resolved matcher of a latent method matcher for a method token.
*/
@HashCodeAndEqualsPlugin.Enhance
protected static class ResolvedMatcher extends ElementMatcher.Junction.ForNonNullValues {
/**
* The signature token representing the matched field.
*/
private final MethodDescription.SignatureToken signatureToken;
/**
* Creates a new resolved matcher.
*
* @param signatureToken The signature token representing the matched field.
*/
protected ResolvedMatcher(MethodDescription.SignatureToken signatureToken) {
this.signatureToken = signatureToken;
}
/**
* {@inheritDoc}
*/
public boolean doMatch(MethodDescription target) {
return target.asSignatureToken().equals(signatureToken);
}
}
}
/**
* A latent matcher for a record component token.
*/
@HashCodeAndEqualsPlugin.Enhance
class ForRecordComponentToken implements LatentMatcher {
/**
* The token being matched.
*/
private final RecordComponentDescription.Token token;
/**
* Creates a latent matcher for a record component token.
*
* @param token The token being matched.
*/
public ForRecordComponentToken(RecordComponentDescription.Token token) {
this.token = token;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
return ElementMatchers.named(token.getName());
}
}
/**
* A matcher that computes the conjunction of all supplied latent matchers.
*
* @param The type of the matched element.
*/
@HashCodeAndEqualsPlugin.Enhance
class Conjunction implements LatentMatcher {
/**
* The matchers this conjunction represents.
*/
private final List> matchers;
/**
* Creates a new conjunction of latent matchers.
*
* @param matcher The matchers this conjunction represents.
*/
@SuppressWarnings("unchecked") // In absence of @SafeVarargs
public Conjunction(LatentMatcher... matcher) {
this(Arrays.asList(matcher));
}
/**
* Creates a new conjunction of latent matchers.
*
* @param matchers The matchers this conjunction represents.
*/
public Conjunction(List> matchers) {
this.matchers = matchers;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
ElementMatcher.Junction matcher = any();
for (LatentMatcher latentMatcher : matchers) {
matcher = matcher.and(latentMatcher.resolve(typeDescription));
}
return matcher;
}
}
/**
* A matcher that computes the disjunction of all supplied latent matchers.
*
* @param The type of the matched element.
*/
@HashCodeAndEqualsPlugin.Enhance
class Disjunction implements LatentMatcher {
/**
* The matchers this disjunction represents.
*/
private final List> matchers;
/**
* Creates a new disjunction of latent matchers.
*
* @param matcher The matchers this disjunction represents.
*/
@SuppressWarnings("unchecked") // In absence of @SafeVarargs
public Disjunction(LatentMatcher... matcher) {
this(Arrays.asList(matcher));
}
/**
* Creates a new disjunction of latent matchers.
*
* @param matchers The matchers this disjunction represents.
*/
public Disjunction(List> matchers) {
this.matchers = matchers;
}
/**
* {@inheritDoc}
*/
public ElementMatcher resolve(TypeDescription typeDescription) {
ElementMatcher.Junction matcher = none();
for (LatentMatcher latentMatcher : matchers) {
matcher = matcher.or(latentMatcher.resolve(typeDescription));
}
return matcher;
}
}
}
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