Type 6 – Semantic tags¶

Tag are additional metadata that can be used to extend or specialize the meaning or interpretation of the other data items.

For example, one might tag an array of numbers to communicate that it should be interpreted as a vector.

Please consult the official IANA repository of CBOR tags before inventing new ones.

Corresponding `cbor_type`	`CBOR_TYPE_TAG`
Number of allocations	One plus any manipulations with the data reallocations relative to chunk count
Storage requirements	`sizeof(cbor_item_t) + the tagged item`

cbor_item_t *cbor_new_tag(uint64_t value)¶

Create a new tag.

Return

new tag. Item reference is NULL. Returns NULL upon memory allocation failure

Parameters

cbor_item_t *cbor_tag_item(const cbor_item_t *item)¶

Get the tagged item.

Return

incref the tagged item

Parameters

uint64_t cbor_tag_value(const cbor_item_t *item)¶

Get tag value.

Return

The tag value. Please consult the tag repository

Parameters

void cbor_tag_set_item(cbor_item_t *item, cbor_item_t *tagged_item)¶

Set the tagged item.

Parameters