/*
* Copyright 2014 - 2018 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 <T> The type of the matched entity.
*/
@
HashCodeAndEqualsPlugin.
Enhance
public class
CollectionSizeMatcher<T extends
Iterable<?>> extends
ElementMatcher.
Junction.
AbstractBase<T> {
/**
* 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")
public boolean
matches(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 + ')';
}
}