org.btrplace.btrpsl.tree.ErrorTree Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2016 University Nice Sophia Antipolis
 *
 * This file is part of btrplace.
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of 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.
 *
 * This library 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.btrplace.btrpsl.tree;

import org.antlr.runtime.Token;
import org.btrplace.btrpsl.element.BtrpOperand;
import org.btrplace.btrpsl.element.IgnorableOperand;

/**
 * Tree to handle errors returned by the lexer.
 *
 * @author Fabien Hermenier
 */
public class ErrorTree extends BtrPlaceTree {

    private Token end;

    /**
     * A tree signaling an error.
     * @param start the first token signaling the error
     * @param stop the last token involved in the error
     */
    public ErrorTree(Token start, Token stop) {
        super(start, null);
        end = stop;
    }

    @Override
    public int getLine() {
        return end.getLine();
    }

    @Override
    public int getCharPositionInLine() {
        return end.getCharPositionInLine();
    }

    @Override
    public BtrpOperand go(BtrPlaceTree parent) {
        return IgnorableOperand.getInstance();
    }
}