package net.bytebuddy.matcher;
import net.bytebuddy.build.HashCodeAndEqualsPlugin;
import java.util.Iterator;
/**
* A matcher that matches a given element of a collection. If no such element is contained by the matched iterable, the matcher
* returns {@code false}.
*
* @param <T> The type of the elements contained by the collection.
*/
@HashCodeAndEqualsPlugin.Enhance
public class CollectionElementMatcher<T> extends ElementMatcher.Junction.AbstractBase<Iterable<? extends T>> {
/**
* The index of the matched element.
*/
private final int index;
/**
* The matcher for the given element, if it exists.
*/
private final ElementMatcher<? super T> matcher;
/**
* Creates a new matcher for an element in a collection.
*
* @param index The index of the matched element.
* @param matcher The matcher for the given element, if it exists.
*/
public CollectionElementMatcher(int index, ElementMatcher<? super T> matcher) {
this.index = index;
this.matcher = matcher;
}
@Override
public boolean matches(Iterable<? extends T> target) {
Iterator<? extends T> iterator = target.iterator();
for (int index = 0; index < this.index; index++) {
if (iterator.hasNext()) {
iterator.next();
} else {
return false;
}
}
return iterator.hasNext() && matcher.matches(iterator.next());
}
@Override
public StringtoString() {
return "with(" + index + " matches " + matcher + ")";
}
}