com.fitbur.bytebuddy.matcher.CollectionElementMatcher Maven / Gradle / Ivy
package com.fitbur.bytebuddy.matcher;
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 The type of the elements contained by the collection.
*/
public class CollectionElementMatcher extends ElementMatcher.Junction.AbstractBase> {
/**
* The index of the matched element.
*/
private final int index;
/**
* The matcher for the given element, if it exists.
*/
private final ElementMatcher elementMatcher;
/**
* Creates a new matcher for an element in a collection.
*
* @param index The index of the matched element.
* @param elementMatcher The matcher for the given element, if it exists.
*/
public CollectionElementMatcher(int index, ElementMatcher elementMatcher) {
this.index = index;
this.elementMatcher = elementMatcher;
}
@Override
public boolean matches(Iterable target) {
Iterator iterator = target.iterator();
for (int index = 0; index < this.index; index++) {
if (iterator.hasNext()) {
iterator.next();
} else {
return false;
}
}
return iterator.hasNext() && elementMatcher.matches(iterator.next());
}
@Override
public boolean equals(Object other) {
return this == other || !(other == null || getClass() != other.getClass())
&& index == ((CollectionElementMatcher) other).index
&& elementMatcher.equals(((CollectionElementMatcher) other).elementMatcher);
}
@Override
public int hashCode() {
return elementMatcher.hashCode() + 31 * index;
}
@Override
public String toString() {
return "with(" + index + " matches " + elementMatcher + ")";
}
}