/*
 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2024 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[", "]"));
    }
}
