/*
 * WorldEdit, a Minecraft world manipulation toolkit
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) WorldEdit team and contributors
 *
 * This program 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.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.operation;

import com.sk89q.worldedit.MaxChangedBlocksException;
import com.sk89q.worldedit.WorldEditException;

/**
 * Operation helper methods.
 */
public final class OperationHelper {

    private OperationHelper() {
    }

    /**
     * Complete a given operation synchronously until it completes.
     *
     * @param op operation to execute
     * @throws WorldEditException WorldEdit exception
     */
    public static void complete(Operation op) throws WorldEditException {
        while (op != null) {
            op = op.resume();
        }
    }

    /**
     * Complete a given operation synchronously until it completes. Catch all
     * errors that is not {@link MaxChangedBlocksException} for legacy reasons.
     *
     * @param op operation to execute
     * @throws MaxChangedBlocksException thrown when too many blocks have been changed
     */
    public static void completeLegacy(Operation op) throws MaxChangedBlocksException {
        while (op != null) {
            try {
                op = op.resume();
            } catch (MaxChangedBlocksException e) {
                throw e;
            } catch (WorldEditException e) {
                throw new RuntimeException(e);
            }
        }
    }

    /**
     * Complete a given operation synchronously until it completes. Re-throw all
     * {@link com.sk89q.worldedit.WorldEditException} exceptions as
     * {@link java.lang.RuntimeException}s.
     *
     * @param op operation to execute
     */
    public static void completeBlindly(Operation op) {
        while (op != null) {
            try {
                op = op.resume();
            } catch (WorldEditException e) {
                throw new RuntimeException(e);
            }
        }
    }

}