Trait TryIteratorExtTag 

pub trait TryIteratorExtTag {
    // Required method
    fn read_tag(&mut self) -> Result<Option<Tag>>;
}

Extension trait for reading tag from byte iterators that yield Result<u8, E>.

This trait provides a convenient method to read tag directly from any iterator that yields Result<u8, E>, allowing proper error propagation from I/O operations.

Example

use ::std::io::{Cursor, Read};
use ::protobuf_core::TryIteratorExtTag;

let data = vec![0x08]; // tag 1:0 (field 1, wire type 0)
let mut reader = Cursor::new(data);
let mut iter = reader.bytes(); // Iterator<Item = Result<u8, io::Error>>
let tag = iter.read_tag().unwrap().unwrap();
assert_eq!(tag.field_number.as_u32(), 1);

Required Methods

fn read_tag(&mut self) -> Result<Option<Tag>>

Read a tag from this iterator.

Returns the Tag Ok(Some(tag)) if successfully read. Returns Ok(None) if no input is available (empty iterator). Returns Err(ProtobufError) if the tag is malformed or an I/O error occurs.

Implementors

impl<I, E> TryIteratorExtTag for I

where I: Iterator<Item = Result<u8, E>>, E: Into<ProtobufError>,