/*

 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.

 * Copyright (C) 2011, 2013-2021 The JavaParser Team.

 *

 * This file is part of JavaParser.

 *

 * JavaParser can be used either under the terms of

 * a) the GNU Lesser General Public License as published by

 *     the Free Software Foundation, either version 3 of the License, or

 *     (at your option) any later version.

 * b) the terms of the Apache License

 *

 * You should have received a copy of both licenses in LICENCE.LGPL and

 * LICENCE.APACHE. Please refer to those files for details.

 *

 * JavaParser is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 */

package com.github.javaparser.printer.concretesyntaxmodel;

import com.github.javaparser.ast.Node;

import com.github.javaparser.printer.SourcePrinter;

import java.util.List;

import java.util.Objects;

import java.util.stream.Collectors;

/**

 * A group of elements that could be in any order.

 */

public class CsmMix implements CsmElement {

    private List<CsmElement> elements;

    public CsmMix(List<CsmElement> elements) {

        if (elements == null) {

            throw new NullPointerException();

        }

        if (elements.stream().anyMatch(Objects::isNull)) {

            throw new IllegalArgumentException("Null element in the mix");

        }

        this.elements = elements;

    }

    public List<CsmElement> getElements() {

        return elements;

    }

    @Override

    public void prettyPrint(Node node, SourcePrinter printer) {

        elements.forEach(e -> e.prettyPrint(node, printer));

    }

    @Override

    public boolean equals(Object o) {

        if (this == o) return true;

        if (o == null || getClass() != o.getClass()) return false;

        CsmMix csmMix = (CsmMix) o;

        return elements != null ? elements.equals(csmMix.elements) : csmMix.elements == null;

    }

    @Override

    public int hashCode() {

        return elements != null ? elements.hashCode() : 0;

    }

    @Override

    public String toString() {

        return elements.stream().map(e -> e.toString()).collect(Collectors.joining(",", "CsmMix[", "]"));

    }

}