72 lines
1.1 KiB
Rust
72 lines
1.1 KiB
Rust
/// The type of a token. May also contain its litteral value.
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#[derive(Clone, PartialEq, Debug)]
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pub enum TokenType {
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LeftParen,
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RightParen,
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LeftBrace,
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RightBrace,
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Address,
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Comma,
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Dot,
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Minus,
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Plus,
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Semicolon,
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Slash,
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Star,
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Bang,
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BangEqual,
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Equal,
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EqualEqual,
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Greater,
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GreaterEqual,
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Less,
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LessEqual,
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Identifier(String),
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String(String),
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Number(f64),
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And,
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Break,
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Class,
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Continue,
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Else,
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False,
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Fun,
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For,
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If,
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Nil,
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Or,
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Print,
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Return,
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Super,
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This,
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True,
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Var,
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While,
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Eof,
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}
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/// Full information about a token.
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#[derive(Clone, Debug)]
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pub struct Token {
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pub token_type: TokenType,
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pub lexeme: String,
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pub line: usize,
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}
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impl Token {
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/// Check whether a token corresponds to a litteral value.
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pub fn is_litteral(&self) -> bool {
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matches!(
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self.token_type,
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TokenType::True
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| TokenType::False
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| TokenType::Nil
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| TokenType::String(_)
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| TokenType::Number(_)
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)
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}
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}
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