/*
 * Copyright 2014 - 2019 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 net.bytebuddy.build.HashCodeAndEqualsPlugin;

import java.util.Collection;
import java.util.Iterator;
import java.util.List;

An element matcher that matches a given iterable collection to a list of matchers on a per-element basis. For a
successful match, any element of the matched iterable collection must be successfully matched by a next
matcher of the supplied list of element matchers. For this to be possible, the matched iterable collection
and the supplied list of element matchers contain the same number of elements.
Type parameters:
<T> – The type of the matched entity./**
 * An element matcher that matches a given iterable collection to a list of matchers on a per-element basis. For a
 * successful match, any element of the matched iterable collection must be successfully matched by a next
 * matcher of the supplied list of element matchers. For this to be possible, the matched iterable collection
 * and the supplied list of element matchers contain the same number of elements.
 *
 * @param <T> The type of the matched entity.
 */
@HashCodeAndEqualsPlugin.Enhance
public class CollectionOneToOneMatcher<T> extends ElementMatcher.Junction.AbstractBase<Iterable<? extends T>> {

    
The list of element matchers to match any elements of the matched iterable collection against.
/**
     * The list of element matchers to match any elements of the matched iterable collection against.
     */
    private final List<? extends ElementMatcher<? super T>> matchers;

    
Creates a new matcher that compares a matched iterable collection against a list of element matchers.
Params:
matchers – The list of element matchers to match any elements of the matched iterable collection
                against./**
     * Creates a new matcher that compares a matched iterable collection against a list of element matchers.
     *
     * @param matchers The list of element matchers to match any elements of the matched iterable collection
     *                 against.
     */
    public CollectionOneToOneMatcher(List<? extends ElementMatcher<? super T>> matchers) {
        this.matchers = matchers;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public boolean matches(Iterable<? extends T> target) {
        if ((target instanceof Collection) && ((Collection<?>) target).size() != matchers.size()) {
            return false;
        }
        Iterator<? extends ElementMatcher<? super T>> iterator = matchers.iterator();
        for (T value : target) {
            if (!iterator.hasNext() || !iterator.next().matches(value)) {
                return false;
            }
        }
        return true;
    }

    @Override
    public String toString() {
        StringBuilder stringBuilder = new StringBuilder("containing(");
        boolean first = true;
        for (Object value : matchers) {
            if (first) {
                first = false;
            } else {
                stringBuilder.append(", ");
            }
            stringBuilder.append(value);
        }
        return stringBuilder.append(')').toString();
    }
}