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. // operator assign, // = plus, // + lparen, // ( rparen, // ) // keyword function, // function let, // let } pub struct token { pub token_type: tokenkind, pub literal: string } pub struct lexer { input: &'a str, position: usize, // current input position read_position: usize, // next input position
ch: u , // a letter which is currently read } impl lexer { pub fn new(input: &'a str) -> self { let mut l = lexer{ input, position: , read_position: , ch: }; l.read_char(); return l; } pub fn new_token(token_type: tokenkind, ch: u )-> token { token { token_type, literal: string::from_utf (vec!...
https://buildersbox.corp-sansan.com/entry/2020/06/29/110000