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#![allow(dead_code)]
use thiserror::Error;
#[derive(Debug, Error)]
pub enum LexerError {
#[error("Unexpected token")]
UnexpectedToken,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum TokenType {
// Meta
DocComment,
Comment,
// Operatiors
Plus,
Minus,
Star,
Slash,
Perc,
PlusEq,
MinusEq,
StarEq,
SlashEq,
PercEq,
// Misc
Literal(Literal),
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum Literal {
Numeric,
Boolean,
Character,
String,
Regex,
}
#[derive(Debug, Default)]
pub struct Location {
row: u32,
column: u32,
}
#[derive(Debug)]
pub struct Token<'a> {
pub tt: TokenType,
pub lexeme: &'a str,
start: Location,
end: Location,
}
pub struct Lexer<'a> {
source: &'a [u8],
start: Location,
end: Location,
}
impl<'a> Lexer<'a> {
fn new(source: &'a str) -> Self {
Self {
source: source.as_bytes(),
start: Default::default(),
end: Default::default(),
}
}
}
impl<'a> Iterator for Lexer<'a> {
type Item = Token<'a>;
fn next(&mut self) -> Option<Self::Item> {
unimplemented!()
}
}
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