NotCondition.java

/*
 * MIT License
 *
 * Copyright (c) 2023-2024 Eugene Terekhov
 *
 * 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 ru.ewc.decita.conditions;

import ru.ewc.decita.ComputationContext;
import ru.ewc.decita.DecitaException;

/**
 * I represent a negation, i.e. a {@link Condition} that is satisfied when its base
 * {@link Condition} is not.
 *
 * @since 0.3
 */
public final class NotCondition extends UnaryCondition {
    /**
     * Ctor.
     *
     * @param delegate The base {@link Condition} to compute against.
     */
    public NotCondition(final Condition delegate) {
        super(delegate);
    }

    @Override
    public boolean evaluate(final ComputationContext context) throws DecitaException {
        if (!this.baseCondition().isEvaluated()) {
            this.baseCondition().evaluate(context);
        }
        return this.isSatisfied();
    }

    @Override
    public boolean isEvaluated() {
        return this.baseCondition().isEvaluated();
    }

    @Override
    public boolean isSatisfied() {
        return !this.baseCondition().isSatisfied();
    }
}