// Implements major type 6 encoding per https://tools.ietf.org/html/rfc7049#section-2.1
/// <summary>
/// Assign a semantic tag (major type 6) to the next data item.
/// </summary>
/// <param name="tag">The value to write.</param>
/// <exception cref="InvalidOperationException">
/// Writing a new value exceeds the definite length of the parent data item. -or-
/// The major type of the encoded value is not permitted in the parent data item. -or-
/// The written data is not accepted under the current conformance level.
/// </exception>
public void WriteTag(CborTag tag)
{
if (!CborConformanceLevelHelpers.AllowsTags(ConformanceLevel))
{
throw new InvalidOperationException(SR.Format(SR.Cbor_ConformanceLevel_TagsNotSupported, ConformanceLevel));
}
WriteUnsignedInteger(CborMajorType.Tag, (ulong)tag);
_isTagContext = true;
}
public void WriteTag(CborTag tag)
{
if (!CborConformanceLevelHelpers.AllowsTags(ConformanceLevel))
{
throw new InvalidOperationException("Tagged items are not permitted under the current conformance level.");
}
WriteUnsignedInteger(CborMajorType.Tag, (ulong)tag);
_isTagContext = true;
}
public CborTag ReadTag()
{
CborTag tag = PeekTagCore(out int additionalBytes);
if (_isConformanceLevelCheckEnabled && !CborConformanceLevelHelpers.AllowsTags(ConformanceLevel))
{
throw new FormatException("Tagged items are not permitted under the current conformance level.");
}
AdvanceBuffer(1 + additionalBytes);
_isTagContext = true;
return(tag);
}
public void ReadTag(CborTag expectedTag)
{
CborTag tag = PeekTagCore(out int additionalBytes);
if (_isConformanceLevelCheckEnabled && !CborConformanceLevelHelpers.AllowsTags(ConformanceLevel))
{
throw new FormatException("Tagged items are not permitted under the current conformance level.");
}
if (expectedTag != tag)
{
throw new InvalidOperationException("CBOR tag mismatch.");
}
AdvanceBuffer(1 + additionalBytes);
_isTagContext = true;
}