net.bytebuddy.matcher.CollectionSizeMatcher Maven / Gradle / Ivy
/*
* Copyright 2014 - Present Rafael Winterhalter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.bytebuddy.matcher;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import net.bytebuddy.build.HashCodeAndEqualsPlugin;
import java.util.Collection;
/**
* An element matcher that matches a collection by its size.
*
* @param The type of the matched entity.
*/
@HashCodeAndEqualsPlugin.Enhance
public class CollectionSizeMatcher> extends ElementMatcher.Junction.ForNonNullValues {
/**
* The expected size of the matched collection.
*/
private final int size;
/**
* Creates a new matcher that matches the size of a matched collection.
*
* @param size The expected size of the matched collection.
*/
public CollectionSizeMatcher(int size) {
this.size = size;
}
/**
* {@inheritDoc}
*/
@SuppressFBWarnings(value = "DLS_DEAD_LOCAL_STORE", justification = "Iteration required to count size of an iterable.")
protected boolean doMatch(T target) {
if (target instanceof Collection) {
return ((Collection) target).size() == size;
} else {
int size = 0;
for (Object ignored : target) {
size++;
}
return size == this.size;
}
}
@Override
public String toString() {
return "ofSize(" + size + ')';
}
}