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Remove unnecessary display from TokenType enum (#1)

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Josh Thomas 2024-10-12 15:57:58 -05:00 • committed by GitHub
parent b1bb62c086
commit 51e00e7a5d
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1 changed files with 33 additions and 83 deletions
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src/lexer.rs
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@ -2,93 +2,43 @@ use std::fmt;
#[derive(Debug, Clone, PartialEq)] #[derive(Debug, Clone, PartialEq)]
enum TokenType { enum TokenType {
// Single-character LeftParen, // (
LeftParen, RightParen, // )
RightParen, LeftBrace, // {
LeftBrace, RightBrace, // }
RightBrace, LeftBracket, // [
LeftBracket, RightBracket, // ]
RightBracket, LeftAngle, // <
LeftAngle, RightAngle, // >
RightAngle, Comma, // ,
Comma, Dot, // .
Dot, Minus, // -
Minus, Plus, // +
Plus, Colon, // :
Colon, Semicolon, // ;
Semicolon, Slash, // /
Slash, Star, // *
Star, Bang, // !
Bang, Equal, // =
Equal, Pipe, // |
Pipe, Percent, // %
Percent, Hash, // #
Hash, SingleQuote, // '
SingleQuote, DoubleQuote, // "
DoubleQuote, DoubleLeftBrace, // {{
DoubleRightBrace, // }}
// Multi-character LeftBracePercent, // {%
DoubleLeftBrace, PercentRightBrace, // %}
DoubleRightBrace, LeftBraceHash, // {#
LeftBracePercent, HashRightBrace, // #}
PercentRightBrace, BangEqual, // !=
LeftBraceHash, DoubleEqual, // ==
HashRightBrace, LeftAngleEqual, // <=
BangEqual, RightAngleEqual, // =>
DoubleEqual,
LeftAngleEqual,
RightAngleEqual,
// Literals
Text, Text,
Eof, Eof,
} }
impl fmt::Display for TokenType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use TokenType::*;
let s = match self {
LeftParen => "(",
RightParen => ")",
LeftBrace => "{",
RightBrace => "}",
LeftBracket => "[",
RightBracket => "]",
LeftAngle => "<",
RightAngle => ">",
Comma => ",",
Dot => ".",
Minus => "-",
Plus => "+",
Colon => ":",
Semicolon => ";",
Slash => "/",
Star => "*",
Bang => "!",
Equal => "=",
Pipe => "|",
Percent => "%",
Hash => "#",
SingleQuote => "'",
DoubleQuote => "\"",
DoubleLeftBrace => "{{",
DoubleRightBrace => "}}",
LeftBracePercent => "{%",
PercentRightBrace => "%}",
LeftBraceHash => "{#",
HashRightBrace => "#}",
BangEqual => "!=",
DoubleEqual => "==",
LeftAngleEqual => "<=",
RightAngleEqual => ">=",
Text => "text",
Eof => "EOF",
};
write!(f, "{}", s)
}
}
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
struct Token { struct Token {
token_type: TokenType, token_type: TokenType,