/**
 * Copyright (c) 2008-2013, http://www.snakeyaml.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.yaml.snakeyaml.events;

/**
 * The implicit flag of a scalar event is a pair of boolean values that indicate
 * if the tag may be omitted when the scalar is emitted in a plain and non-plain
 * style correspondingly.
 * 
 * @see <a href="http://pyyaml.org/wiki/PyYAMLDocumentation#Events">Events</a>
 */
public class ImplicitTuple {
    private final boolean plain;
    private final boolean nonPlain;

    public ImplicitTuple(boolean plain, boolean nonplain) {
        this.plain = plain;
        this.nonPlain = nonplain;
    }

    /**
     * @return true when tag may be omitted when the scalar is emitted in a
     *         plain style.
     */
    public boolean canOmitTagInPlainScalar() {
        return plain;
    }

    /**
     * @return true when tag may be omitted when the scalar is emitted in a
     *         non-plain style.
     */
    public boolean canOmitTagInNonPlainScalar() {
        return nonPlain;
    }

    public boolean bothFalse() {
        return !plain && !nonPlain;
    }

    @Override
    public String toString() {
        return "implicit=[" + plain + ", " + nonPlain + "]";
    }
}