com.fitbur.bytebuddy.matcher.LatentMatcher Maven / Gradle / Ivy
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package com.fitbur.bytebuddy.matcher;
import com.fitbur.bytebuddy.description.field.FieldDescription;
import com.fitbur.bytebuddy.description.method.MethodDescription;
import com.fitbur.bytebuddy.description.type.TypeDescription;
import java.util.Arrays;
import java.util.List;
import static com.fitbur.bytebuddy.matcher.ElementMatchers.none;
/**
* A latent matcher that resolves an {@link ElementMatcher} after supplying the instrumented type.
*
* @param The type of the matched element.
*/
public interface LatentMatcher {
/**
* Resolves the element matcher this instance represents for the instrumented type.
*
* @param instrumentedType The instrumented type.
* @return An {@link ElementMatcher} that represents this matcher's resolved form.
*/
ElementMatcher resolve(TypeDescription instrumentedType);
/**
* A latent matcher representing an already resolved {@link ElementMatcher}.
*
* @param The type of the matched element.
*/
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;
}
@Override
public ElementMatcher resolve(TypeDescription instrumentedType) {
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 instrumented type before matching.
*/
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;
}
@Override
public ElementMatcher resolve(TypeDescription instrumentedType) {
return new ResolvedMatcher(token.asSignatureToken(instrumentedType));
}
@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 {
/**
* 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 instrumented type before matching.
*/
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;
}
@Override
public ElementMatcher resolve(TypeDescription instrumentedType) {
return new ResolvedMatcher(token.asSignatureToken(instrumentedType));
}
@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 {
/**
* 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 The type of the matched element.
*/
class Compound implements LatentMatcher {
/**
* The matchers this compound matcher represents.
*/
private final List> matchers;
/**
* Creates a new compound latent matcher.
*
* @param matcher The matchers this compound matcher represents.
*/
//@SafeVarargs
public Compound(LatentMatcher... matcher) {
this(Arrays.asList(matcher));
}
/**
* Creates a new compound latent matcher.
*
* @param matchers The matchers this compound matcher represents.
*/
public Compound(List> matchers) {
this.matchers = matchers;
}
@Override
public ElementMatcher resolve(TypeDescription instrumentedType) {
ElementMatcher.Junction matcher = none();
for (LatentMatcher latentMatcher : matchers) {
matcher = matcher.or(latentMatcher.resolve(instrumentedType));
}
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 +
'}';
}
}
}
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