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LatentMatcher.java
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LatentMatcher.java
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package net.bytebuddy.matcher;
import net.bytebuddy.description.field.FieldDescription;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.description.type.TypeDescription;
import java.util.Arrays;
import java.util.List;
import static net.bytebuddy.matcher.ElementMatchers.none;
/**
* A latent matcher that resolves an {@link ElementMatcher} after supplying a type description.
*
* @param <T> The type of the matched element.
*/
public interface LatentMatcher<T> {
/**
* 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<? super T> resolve(TypeDescription typeDescription);
/**
* A latent matcher representing an already resolved {@link ElementMatcher}.
*
* @param <S> The type of the matched element.
*/
class Resolved<S> implements LatentMatcher<S> {
/**
* The resolved matcher.
*/
private final ElementMatcher<? super S> matcher;
/**
* Creates a new resolved latent matcher.
*
* @param matcher The resolved matcher.
*/
public Resolved(ElementMatcher<? super S> matcher) {
this.matcher = matcher;
}
@Override
public ElementMatcher<? super S> resolve(TypeDescription typeDescription) {
return matcher;
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& matcher.equals(((Resolved) other).matcher);
}
@Override
public int hashCode() {
return matcher.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.Resolved{" +
"matcher=" + matcher +
'}';
}
}
/**
* A latent matcher where the field token is being attached to the supplied type description before matching.
*/
class ForFieldToken implements LatentMatcher<FieldDescription> {
/**
* 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;
}
@Override
public ElementMatcher<? super FieldDescription> resolve(TypeDescription typeDescription) {
return new ResolvedMatcher(token.asSignatureToken(typeDescription));
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& token.equals(((ForFieldToken) other).token);
}
@Override
public int hashCode() {
return token.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.ForFieldToken{" +
"token=" + token +
'}';
}
/**
* A resolved matcher of a latent field matcher for a field token.
*/
protected static class ResolvedMatcher implements ElementMatcher<FieldDescription> {
/**
* 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;
}
@Override
public boolean matches(FieldDescription target) {
return target.asSignatureToken().equals(signatureToken);
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& signatureToken.equals(((ResolvedMatcher) other).signatureToken);
}
@Override
public int hashCode() {
return signatureToken.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.ForFieldToken.ResolvedMatcher{" +
"signatureToken=" + signatureToken +
'}';
}
}
}
/**
* A latent matcher where the method token is being attached to the supplied type description before matching.
*/
class ForMethodToken implements LatentMatcher<MethodDescription> {
/**
* 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;
}
@Override
public ElementMatcher<? super MethodDescription> resolve(TypeDescription typeDescription) {
return new ResolvedMatcher(token.asSignatureToken(typeDescription));
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& token.equals(((ForMethodToken) other).token);
}
@Override
public int hashCode() {
return token.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.ForMethodToken{" +
"token=" + token +
'}';
}
/**
* A resolved matcher of a latent method matcher for a method token.
*/
protected static class ResolvedMatcher implements ElementMatcher<MethodDescription> {
/**
* 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;
}
@Override
public boolean matches(MethodDescription target) {
return target.asSignatureToken().equals(signatureToken);
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& signatureToken.equals(((ResolvedMatcher) other).signatureToken);
}
@Override
public int hashCode() {
return signatureToken.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.ForMethodToken.ResolvedMatcher{" +
"signatureToken=" + signatureToken +
'}';
}
}
}
/**
* A compound implementation of a latent matcher. A compound matcher matches a method if at least one of the resolved matchers
* matches the target element.
*
* @param <S> The type of the matched element.
*/
class Compound<S> implements LatentMatcher<S> {
/**
* The matchers this compound matcher represents.
*/
private final List<? extends LatentMatcher<? super S>> matchers;
/**
* Creates a new compound latent matcher.
*
* @param matcher The matchers this compound matcher represents.
*/
//@SafeVarargs
public Compound(LatentMatcher<? super S>... matcher) {
this(Arrays.asList(matcher));
}
/**
* Creates a new compound latent matcher.
*
* @param matchers The matchers this compound matcher represents.
*/
public Compound(List<? extends LatentMatcher<? super S>> matchers) {
this.matchers = matchers;
}
@Override
public ElementMatcher<? super S> resolve(TypeDescription typeDescription) {
ElementMatcher.Junction<S> matcher = none();
for (LatentMatcher<? super S> latentMatcher : matchers) {
matcher = matcher.or(latentMatcher.resolve(typeDescription));
}
return matcher;
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& matchers.equals(((Compound) other).matchers);
}
@Override
public int hashCode() {
return matchers.hashCode();
}
@Override
public String toString() {
return "LatentMatcher.Compound{" +
"matchers=" + matchers +
'}';
}
}
}