Type Documentation

enum class QCborKnownTags

This enum contains a list of CBOR tags, known at the time of the Qt implementation. This list is not meant to be complete and contains only tags that are either backed by an RFC or specifically used by the Qt implementation.

The authoritative list is maintained by IANA in the CBOR tag registry.

The following tags are interpreted by QCborValue during decoding and will produce objects with extended Qt types, and it will use those tags when encoding the same extended types.

Additionally, if a QCborValue containing a QByteArray is tagged using one of ExpectedBase64url, ExpectedBase64 or ExpectedBase16, QCborValue will use the expected encoding when converting to JSON (see QCborValue::toJsonValue).

See also QCborTag, QCborStreamWriter::append(QCborTag), QCborStreamReader::isTag(), QCborStreamReader::toTag(), QCborValue::isTag(), and QCborValue::tag().

enum class QCborSimpleType

This enum contains the possible "Simple Types" for CBOR. Simple Types range from 0 to 255 and are types that carry no further value.

The following values are currently known:

Qt CBOR API supports encoding and decoding any Simple Type, whether one of those above or any other value.

Applications should only use further values if a corresponding specification has been published, otherwise interpretation and validation by the remote may fail. Values 24 to 31 are reserved and must not be used.

The current authoritative list is maintained by IANA in the Simple Values registry.

See also QCborStreamWriter::append(QCborSimpleType), QCborStreamReader::isSimpleType(), QCborStreamReader::toSimpleType(), QCborValue::isSimpleType(), and QCborValue::toSimpleType().

enum class QCborTag

This enum contains no enumeration and is used only to provide type-safe access to a CBOR tag.

CBOR tags are 64-bit numbers that are attached to generic CBOR types to provide further semantic meaning. QCborTag may be constructed from an enumeration found in QCborKnownTags or directly by providing the numeric representation.

For example, the following creates a QCborValue containing a byte array tagged with a tag 2.

   QCborValue(QCborTag(2), QByteArray("\x01\0\0\0\0\0\0\0\0", 9));

See also QCborKnownTags, QCborStreamWriter::append(QCborTag), QCborStreamReader::isTag(), QCborStreamReader::toTag(), QCborValue::isTag(), and QCborValue::tag().