/*
 * This file is part of LuckPerms, licensed under the MIT License.
 *
 *  Copyright (c) lucko (Luck) <luck@lucko.me>
 *  Copyright (c) contributors
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */

package me.lucko.luckperms.common.calculator.processor;

import me.lucko.luckperms.common.cacheddata.result.TristateResult;

/**
 * Abstract implementation of {@link PermissionProcessor} that splits behaviour for normal
 * permission checks and override checks into two separate methods.
 */
public abstract class AbstractPermissionProcessor implements PermissionProcessor {

    @Override
    public final TristateResult hasPermission(TristateResult prev, String permission) {
        if (prev != TristateResult.UNDEFINED) {
            return hasPermissionOverride(prev, permission);
        }
        return hasPermission(permission);
    }

    // Performs a regular permission check
    protected abstract TristateResult hasPermission(String permission);

    // Performs an override permission check
    protected TristateResult hasPermissionOverride(TristateResult prev, String permission) {
        return prev;
    }

}
