#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum TokenKind {
    // Keywords
    Return,
    If,
    Else,
    True,
    False,
    Nil,

    // Expressions
    Name,
    Number,
    String,

    // Binary operators
    Plus,
    Minus,
    Star,
    Slash,

    // Unary operators (not already covered)
    Bang,

    // Boolean operators
    And,
    Or,

    // Comparison
    BangEq,
    EqEq,
    Greater,
    GreaterEq,
    Less,
    LessEq,

    // Braces, parens, etc
    LParen,
    RParen,
    LBrace,
    RBrace,
    LBracket,
    RBracket,

    // Assignment
    Eq,

    // Dot, comma
    Dot,
    Comma,
    Arrow,
    Colon,

    // Line end
    Eol,

    // File end
    Eof,
}

#[derive(Debug, Clone)]
pub struct Token {
    pub line: usize,
    //pub index: usize,
    pub text: String,
    pub kind: TokenKind,
}