/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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 net.dongliu.apk.parser.cert.asn1;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface Asn1Field {
    /**
     * Index used to order fields in a container. Required for fields of SEQUENCE containers.
     */
    int index() default 0;

    Asn1TagClass cls() default Asn1TagClass.Automatic;

    Asn1Type type();

    /**
     * Tagging mode. Default: NORMAL.
     */
    Asn1Tagging tagging() default Asn1Tagging.Normal;

    /**
     * Tag number. Required when IMPLICIT and EXPLICIT tagging mode is used.
     */
    int tagNumber() default -1;

    /**
     * {@code true} if this field is optional. Ignored for fields of CHOICE containers.
     */
    boolean optional() default false;

    /**
     * Type of elements. Used only for SET_OF or SEQUENCE_OF.
     */
    Asn1Type elementType() default Asn1Type.Any;
}
