Struct MapEncodeBuffer 

pub struct MapEncodeBuffer {
    pub data: Vec<u8>,
    pub entries: Vec<(i64, usize, usize)>,
}

Available on crate feature cbor only.

A collector of CBOR map entries in a single shared buffer, recording (key, start, end) offsets. This avoids per-field allocation: all encoded values are written contiguously into data.

Fields

data: Vec<u8>

Encoded values, written back to back.

entries: Vec<(i64, usize, usize)>

Key and the value’s byte range within data, one per entry.

Implementations

impl MapEncodeBuffer

pub fn new(capacity: usize) -> Self

Creates a new buffer pre-sized for the expected number of entries.

pub fn push<T: Encode>(&mut self, key: i64, value: &T) -> Result<(), Error>

Encodes a required field directly into the shared buffer.

pub fn push_optional<T: Encode>( &mut self, key: i64, value: &Option<T>, ) -> Result<(), Error>

Encodes an optional field; omits the entry entirely when None.

pub fn finish_to(self, out: &mut Vec<u8>) -> Result<(), Error>

Assembles the final CBOR map into the provided buffer. Sorts entries by CBOR key order if not already sorted, then verifies no duplicate keys.