/*
 * Copyright (C) 2019-2022 LitterBox contributors
 *
 * This file is part of LitterBox.
 *
 * LitterBox is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or (at
 * your option) any later version.
 *
 * LitterBox 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with LitterBox. If not, see <http://www.gnu.org/licenses/>.
 */
package de.uni_passau.fim.se2.litterbox.ast.model.identifier;

import de.uni_passau.fim.se2.litterbox.ast.model.ASTNode;
import de.uni_passau.fim.se2.litterbox.ast.model.AbstractNode;
import de.uni_passau.fim.se2.litterbox.ast.model.expression.ComparableExpr;
import de.uni_passau.fim.se2.litterbox.ast.model.variable.DataExpr;
import de.uni_passau.fim.se2.litterbox.ast.visitor.CloneVisitor;
import de.uni_passau.fim.se2.litterbox.ast.visitor.ScratchVisitor;
import de.uni_passau.fim.se2.litterbox.utils.Preconditions;

import java.util.Objects;

public class Qualified extends AbstractNode implements Identifier, ComparableExpr {

    private final LocalIdentifier first;
    private final DataExpr second;

    public Qualified(LocalIdentifier first, DataExpr second) {
        super(first, second);
        this.first = Preconditions.checkNotNull(first);
        this.second = Preconditions.checkNotNull(second);
    }

    public LocalIdentifier getFirst() {
        return first;
    }

    public DataExpr getSecond() {
        return second;
    }

    @Override
    public void accept(ScratchVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public ASTNode accept(CloneVisitor visitor) {
        return visitor.visit(this);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Qualified qualified = (Qualified) o;
        return Objects.equals(first, qualified.first)
                && Objects.equals(second, qualified.second);
    }

    @Override
    public int hashCode() {
        return Objects.hash(super.hashCode(), first, second);
    }
}
