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use std::fmt::Display;
use crate::common::data::Data;
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum Token {
OpenBracket,
CloseBracket,
OpenParen,
CloseParen,
Sep,
Assign,
Lambda,
Print,
Unit,
Symbol,
Number(Data),
String(Data),
Boolean(Data),
End
}
impl Display for Token {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let message = match self {
Token::OpenBracket => "an opening bracket",
Token::CloseBracket => "a closing bracket",
Token::OpenParen => "an openening paren",
Token::CloseParen => "a closing paren",
Token::Sep => "a separator",
Token::Assign => "an assignment",
Token::Lambda => "a lambda",
Token::Unit => "unit",
Token::Print => "a print keyword",
Token::Symbol => "a symbol",
Token::Number(_) => "a number",
Token::String(_) => "a string",
Token::Boolean(_) => "a boolean, like 'true' or 'false'",
Token::End => "end of source"
};
write!(f, "{}", message)
}
}