Function caked::lex

pub fn lex<I: IntoIterator<Item = char>, O: Observe<(Position, Token)>>(
    state: &mut State, 
    position: &mut Position, 
    token_position: &mut Position, 
    buffer: &mut String, 
    codepoint: &mut u32, 
    source: I, 
    dest: &mut O
) -> Result<(), LexError>

Feeds characters into lexer.