internal ReadOnlySpan <byte> ReadIntegerBytes(Asn1Tag?expectedTag = default)
{
ReadOnlySpan <byte> ret = AsnDecoder.ReadIntegerBytes(_span, _ruleSet, out int consumed, expectedTag);
_span = _span.Slice(consumed);
return(ret);
}
/// <summary>
/// Reads the next value as a Integer with a specified tag, returning the contents
/// as a <see cref="ReadOnlyMemory{T}"/> over the original data.
/// </summary>
/// <param name="expectedTag">
/// The tag to check for before reading, or <see langword="null"/> for the default tag (Universal 2).
/// </param>
/// <returns>
/// The bytes of the Integer value, in signed big-endian form.
/// </returns>
/// <exception cref="AsnContentException">
/// the next value does not have the correct tag.
///
/// -or-
///
/// the length encoding is not valid under the current encoding rules.
///
/// -or-
///
/// the contents are not valid under the current encoding rules.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="expectedTag"/>.<see cref="Asn1Tag.TagClass"/> is
/// <see cref="TagClass.Universal"/>, but
/// <paramref name="expectedTag"/>.<see cref="Asn1Tag.TagValue"/> is not correct for
/// the method.
/// </exception>
public ReadOnlyMemory <byte> ReadIntegerBytes(Asn1Tag?expectedTag = null)
{
ReadOnlySpan <byte> bytes =
AsnDecoder.ReadIntegerBytes(_data.Span, RuleSet, out int consumed, expectedTag);
ReadOnlyMemory <byte> ret = AsnDecoder.Slice(_data, bytes);
_data = _data.Slice(consumed);
return(ret);
}
