Struct cbor_data::CborValue

pub struct CborValue<'a> {
    pub tags: Tags<'a>,
    pub kind: ValueKind<'a>,
    pub bytes: &'a [u8],
}

Representation of a possibly tagged CBOR data item.

Fields

tags: Tags<'a>

kind: ValueKind<'a>

bytes: &'a [u8]

Implementations

impl<'a> CborValue<'a>

pub fn decoded(&self) -> Option<Self>

Strip off wrappers of CBOR item encoding: sees through byte strings with TAG_CBOR_ITEM.

pub fn tags(&self) -> Tags<'a>

Get value all tags, from the outermost to the innermost

pub fn as_bool(&self) -> Option<bool>

pub fn as_u64(&self) -> Option<u64>

Try to interpret this value as a 64bit unsigned integer.

Currently does not check floats or big integers.

pub fn as_i64(&self) -> Option<i64>

Try to interpret this value as a signed integer.

Currently does not check floats or big integers.

pub fn as_i32(&self) -> Option<i32>

Try to interpret this value as a signed integer.

Currently does not check floats or big integers.

pub fn as_f64(&self) -> Option<f64>

Try to interpret this value as a floating-point number.

TODO: add proper representations for the big number types supported by CBOR

pub fn as_bytes(&self) -> Option<Cow<'a, [u8]>>

Try to interpret this value as byte string.

This returns a Cow because it may need to allocate a vector when decoding base64 strings.

pub fn as_str(&self) -> Option<&'a str>

Try to interpret this value as string.

Returns None if the type is not a (byte) string or the bytes are not valid UTF-8. base64 encoded strings (TAG_BASE64 or TAG_BASE64URL) are not decoded but returned as they are (even when their binary decoded form is valid UTF-8).

pub fn as_object(&self) -> Option<CborObject<'a>>

Lift a representation from this CBOR item that turns arrays into vectors and dicts into BTreeMaps.

This method is mostly useful for diagnostics and tests.

Trait Implementations

impl<'a> Clone for CborValue<'a>

fn clone(&self) -> CborValue<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for CborValue<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Display for CborValue<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> PartialEq<CborValue<'_>> for CborValue<'a>

fn eq(&self, other: &CborValue<'_>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> Copy for CborValue<'a>