Trait tendril::fmt::CharFormat

pub unsafe trait CharFormat<'a>: Format {
    type Iter: Iterator<Item = (usize, char)>;

    // Required methods
    unsafe fn char_indices(buf: &'a [u8]) -> Self::Iter;
    fn encode_char<F>(ch: char, cont: F) -> Result<(), ()>
       where F: FnOnce(&[u8]);
}

Indicates a format which contains characters from Unicode (all of it, or some proper subset).

Required Associated Types

type Iter: Iterator<Item = (usize, char)>

Iterator for characters and their byte indices.

Required Methods

unsafe fn char_indices(buf: &'a [u8]) -> Self::Iter

Iterate over the characters of the string and their byte indices.

You may assume the buffer is already validated for Format.

fn encode_char<F>(ch: char, cont: F) -> Result<(), ()>

where F: FnOnce(&[u8]),

Encode the character as bytes and pass them to a continuation.

Returns Err(()) iff the character cannot be represented.

Object Safety

This trait is not object safe.

Implementors

impl<'a> CharFormat<'a> for ASCII

type Iter = SingleByteCharIndices<'a>

impl<'a> CharFormat<'a> for Latin1

type Iter = SingleByteCharIndices<'a>

impl<'a> CharFormat<'a> for UTF8

type Iter = CharIndices<'a>