/*
* 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 com.android.apksig.internal.asn1.ber;
/**
* Reader of ASN.1 Basic Encoding Rules (BER) data values.
*
* <p>BER data value reader returns data values, one by one, from a source. The interpretation of
* data values (e.g., how to obtain a numeric value from an INTEGER data value, or how to extract
* the elements of a SEQUENCE value) is left to clients of the reader.
*/
public interface BerDataValueReader {
/**
* Returns the next data value or {@code null} if end of input has been reached.
*
* @throws BerDataValueFormatException if the value being read is malformed.
*/
BerDataValue readDataValue() throws BerDataValueFormatException;
}