net.bytebuddy.instrumentation.attribute.annotation.AnnotationList 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 all ASM dependencies repackaged into its own name space.
package net.bytebuddy.instrumentation.attribute.annotation;
import net.bytebuddy.instrumentation.type.TypeDescription;
import java.lang.annotation.Annotation;
import java.lang.annotation.Inherited;
import java.util.*;
/**
* Defines a list of annotation instances.
*/
public interface AnnotationList extends List {
/**
* Checks if this list contains an annotation of the given type.
*
* @param annotationType The type to find in the list.
* @return {@code true} if the list contains the annotation type.
*/
boolean isAnnotationPresent(Class annotationType);
/**
* Finds the first annotation of the given type and returns it.
*
* @param annotationType The type to be found in the list.
* @param The annotation type.
* @return The annotation value or {@code null} if no such annotation was found.
*/
AnnotationDescription.Loadable ofType(Class annotationType);
/**
* Returns only annotations that are marked as {@link java.lang.annotation.Inherited} as long as they are not
* contained by the set of ignored annotation types.
*
* @param ignoredTypes A list of annotation types to be ignored from the lookup.
* @return A list of all inherited annotations besides of the given ignored types.
*/
AnnotationList inherited(Set ignoredTypes);
@Override
AnnotationList subList(int fromIndex, int toIndex);
/**
* Describes an array of loaded {@link java.lang.annotation.Annotation}s as an annotatoon list.
*/
static class ForLoadedAnnotation extends AbstractList implements AnnotationList {
/**
* The represented annotations.
*/
private final Annotation[] annotation;
/**
* Creates a new list of loaded annotations.
*
* @param annotation The represented annotations.
*/
public ForLoadedAnnotation(Annotation... annotation) {
this.annotation = annotation;
}
/**
* Creates a list of annotation lists representing the given loaded annotations.
*
* @param annotations The annotations to represent where each dimension is converted into a list.
* @return A list of annotation lists representing the given annotations.
*/
public static List asList(Annotation[][] annotations) {
List result = new ArrayList(annotations.length);
for (Annotation[] annotation : annotations) {
result.add(new ForLoadedAnnotation(annotation));
}
return result;
}
@Override
public AnnotationDescription get(int index) {
return AnnotationDescription.ForLoadedAnnotation.of(annotation[index]);
}
@Override
public int size() {
return annotation.length;
}
@Override
public boolean isAnnotationPresent(Class annotationType) {
for (Annotation anAnnotation : annotation) {
if (anAnnotation.annotationType().equals(annotationType)) {
return true;
}
}
return false;
}
@Override
public AnnotationDescription.Loadable ofType(Class annotationType) {
for (Annotation anAnnotation : annotation) {
if (anAnnotation.annotationType().equals(annotationType)) {
return AnnotationDescription.ForLoadedAnnotation.of(annotationType.cast(anAnnotation));
}
}
return null;
}
@Override
public AnnotationList inherited(Set ignoredTypes) {
List inherited = new LinkedList();
for (Annotation annotation : this.annotation) {
if (!ignoredTypes.contains(new TypeDescription.ForLoadedType(annotation.annotationType()))
&& annotation.annotationType().isAnnotationPresent(Inherited.class)) {
inherited.add(annotation);
}
}
return new ForLoadedAnnotation(inherited.toArray(new Annotation[inherited.size()]));
}
@Override
public AnnotationList subList(int fromIndex, int toIndex) {
return new Explicit(super.subList(fromIndex, toIndex));
}
}
/**
* Represents an empty annotation list.
*/
static class Empty extends AbstractList implements AnnotationList {
/**
* Creates a list of empty annotation lists of the given dimension.
*
* @param length The length of the list.
* @return A list of empty annotation lists of the given length.
*/
public static List asList(int length) {
List result = new ArrayList(length);
for (int i = 0; i < length; i++) {
result.add(new Empty());
}
return result;
}
@Override
public AnnotationDescription get(int index) {
throw new IndexOutOfBoundsException();
}
@Override
public int size() {
return 0;
}
@Override
public boolean isAnnotationPresent(Class annotationType) {
return false;
}
@Override
public AnnotationDescription.Loadable ofType(Class annotationType) {
return null;
}
@Override
public AnnotationList inherited(Set ignoredTypes) {
return this;
}
@Override
public AnnotationList subList(int fromIndex, int toIndex) {
if (fromIndex == toIndex && toIndex == 0) {
return this;
} else if (fromIndex > toIndex) {
throw new IllegalArgumentException("fromIndex(" + fromIndex + ") > toIndex(" + toIndex + ")");
} else {
throw new IndexOutOfBoundsException("fromIndex = " + fromIndex);
}
}
}
/**
* Represents a list of explicitly provided annotation descriptions.
*/
static class Explicit extends AbstractList implements AnnotationList {
/**
* The list of represented annotation descriptions.
*/
private final List annotationDescriptions;
/**
* Creates a new list of annotation descriptions.
*
* @param annotationDescriptions The list of represented annotation descriptions.
*/
public Explicit(List annotationDescriptions) {
this.annotationDescriptions = annotationDescriptions;
}
/**
* Creates a list of annotation lists for a given multidimensional list of annotation descriptions.
*
* @param annotations The list of annotations to represent as a list of annotation lists.
* @return The list of annotation lists.
*/
public static List asList(List> annotations) {
List result = new ArrayList(annotations.size());
for (List annotation : annotations) {
result.add(new Explicit(annotation));
}
return result;
}
@Override
public AnnotationDescription get(int index) {
return annotationDescriptions.get(index);
}
@Override
public int size() {
return annotationDescriptions.size();
}
@Override
public boolean isAnnotationPresent(Class annotationType) {
for (AnnotationDescription annotationDescription : annotationDescriptions) {
if (annotationDescription.getAnnotationType().represents(annotationType)) {
return true;
}
}
return false;
}
@Override
public AnnotationDescription.Loadable ofType(Class annotationType) {
for (AnnotationDescription annotationDescription : annotationDescriptions) {
if (annotationDescription.getAnnotationType().represents(annotationType)) {
return annotationDescription.prepare(annotationType);
}
}
return null;
}
@Override
public AnnotationList inherited(Set ignoredTypes) {
List inherited = new LinkedList();
for (AnnotationDescription annotation : annotationDescriptions) {
TypeDescription annotationType = annotation.getAnnotationType();
if (!ignoredTypes.contains(annotationType) && annotationType.getDeclaredAnnotations().isAnnotationPresent(Inherited.class)) {
inherited.add(annotation);
}
}
return new Explicit(new ArrayList(inherited));
}
@Override
public AnnotationList subList(int fromIndex, int toIndex) {
return new Explicit(super.subList(fromIndex, toIndex));
}
}
}
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