ssi_status::bitstring_status_list

Struct BitString

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pub struct BitString(/* private fields */);
Expand description

Bit-string as defined by the W3C Bitstring Status List specification.

Bits are indexed from most significant to least significant.

| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | ... | n-8 | n-7 | n-6 | n-5 | n-4 | n-3 | n-2 | n-1 |
| byte 0                        | ... | byte k-1                                      |

See: https://www.w3.org/TR/vc-bitstring-status-list/#bitstring-encoding

This type does not store the actual status size (the size of each item) nor the total number of items in the list. Use the SizedBitString type to access the list safely with regard to the items boundaries.

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impl BitString

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pub fn new() -> Self

Creates a new empty bit-string.

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pub fn new_with( status_size: StatusSize, len: usize, f: impl FnMut(usize) -> u8, ) -> Result<Self, Overflow>

Creates a new bit-string of the given length, using f to initialize every status.

The f function is called with the index of the initialized status.

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pub fn new_with_value( status_size: StatusSize, len: usize, value: u8, ) -> Result<Self, Overflow>

Creates a new bit-string of the given length, setting every status to the same value.

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pub fn new_zeroed(status_size: StatusSize, len: usize) -> Self

Creates a new bit-string of the given length, setting every status to 0.

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pub fn with_capacity(status_size: StatusSize, capacity: usize) -> Self

Creates a new bit-string with the given status size and capacity (in number of statuses).

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pub fn from_bytes(bytes: Vec<u8>) -> Self

Creates a bit-string from a byte array and status size.

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pub fn get(&self, status_size: StatusSize, index: usize) -> Option<u8>

Returns the value stored in the list at the given index.

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pub fn set( &mut self, status_size: StatusSize, index: usize, value: u8, ) -> Result<u8, Overflow>

Sets the value at the given index.

Returns the previous value, or an Overflow error if either the index is out of bounds or the value is too large.

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pub fn iter(&self, status_size: StatusSize) -> BitStringIter<'_>

Returns an iterator over all the statuses stored in this bit-string.

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pub fn encode(&self) -> EncodedList

Encodes the bit-string.

Trait Implementations§

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impl Clone for BitString

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fn clone(&self) -> BitString

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for BitString

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

Formats the value using the given formatter. Read more
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impl Default for BitString

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fn default() -> BitString

Returns the “default value” for a type. Read more

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