fmt

src/args.rs

@@ -6,4 +6,3 @@ pub struct Args {
     #[arg()]
     pub file: Option<String>,
 }
-

src/error_reporter.rs

@@ -1,5 +1,5 @@
 #[derive(Default)]
-pub struct ErrorReporter{
+pub struct ErrorReporter {
     had_error: bool,
 }
 
@@ -19,4 +19,4 @@ impl ErrorReporter {
     pub fn had_error(&self) -> bool {
         self.had_error
     }
-}
+}

src/lox.rs

@@ -5,17 +5,14 @@ use std::{
 
 use crate::{error_reporter::ErrorReporter, scanner::Scanner};
 
-
 #[derive(Default)]
 pub struct Lox {
-    error_reporter: ErrorReporter
+    error_reporter: ErrorReporter,
 }
 
-
-
 impl Lox {
     fn run(&mut self, source: String) {
-        let mut scanner = Scanner::new(source, & mut self.error_reporter);
+        let mut scanner = Scanner::new(source, &mut self.error_reporter);
         let tokens = scanner.scan_tokens();
         tokens.iter().for_each(|x| println!("{:?}", x))
     }
@@ -40,5 +37,4 @@ impl Lox {
             }
         }
     }
-
 }

src/main.rs

@@ -1,23 +1,23 @@
-
 use clap::Parser;
 use lox::Lox;
 
 use args::Args;
 
 mod args;
+mod error_reporter;
 mod lox;
 mod scanner;
-mod error_reporter;
 mod token;
 
 fn main() {
     let args = Args::parse();
     let mut lox = Lox::default();
     match args.file {
-        Some(file) => if !lox.run_file(file) {
-            std::process::exit(65)
-        },
+        Some(file) => {
+            if !lox.run_file(file) {
+                std::process::exit(65)
+            }
+        }
         None => lox.run_prompt(),
     }
 }
-

src/scanner.rs

@@ -47,7 +47,7 @@ impl<'a> Scanner<'a> {
             start: 0,
             current: 0,
             line: 1,
-            error_reporter: e
+            error_reporter: e,
         }
     }
 
@@ -191,7 +191,10 @@ impl<'a> Scanner<'a> {
     }
 
     fn read_identifier(&mut self) -> ScanResult {
-        while self.peek().is_some_and(|c| c.is_ascii_alphanumeric() || c == '_') {
+        while self
+            .peek()
+            .is_some_and(|c| c.is_ascii_alphanumeric() || c == '_')
+        {
             self.current += 1;
         }
 

src/token.rs

@@ -1,18 +1,52 @@
 #[derive(Debug, Clone)]
 pub enum TokenType {
     //single character tokens.
-    LeftParen, RightParen, LeftBrace, RightBrace, Comma, Dot, Minus, Plus, Semicolon, Slash, Star,
+    LeftParen,
+    RightParen,
+    LeftBrace,
+    RightBrace,
+    Comma,
+    Dot,
+    Minus,
+    Plus,
+    Semicolon,
+    Slash,
+    Star,
 
     // One or two character tokens.
-    Bang, BangEqual, Equal, EqualEqual, Greater, GreaterEqual, Less, LessEqual,
+    Bang,
+    BangEqual,
+    Equal,
+    EqualEqual,
+    Greater,
+    GreaterEqual,
+    Less,
+    LessEqual,
 
     // Literals
-    Identifier, String(String), Number(f32),
+    Identifier,
+    String(String),
+    Number(f32),
 
     // Keywords.
-    And, Class, Else, False, Fun, For, If, Nil, Or, Print, Return, Super, This, True, Var, While,
+    And,
+    Class,
+    Else,
+    False,
+    Fun,
+    For,
+    If,
+    Nil,
+    Or,
+    Print,
+    Return,
+    Super,
+    This,
+    True,
+    Var,
+    While,
     // Eof
-    Eof
+    Eof,
 }
 
 #[derive(Debug, Clone)]
@@ -23,5 +57,11 @@ pub struct Token {
 }
 
 impl Token {
-    pub fn new(token_type: TokenType, lexeme: String, line: usize) -> Self { Self { token_type, lexeme, line } }
-}
+    pub fn new(token_type: TokenType, lexeme: String, line: usize) -> Self {
+        Self {
+            token_type,
+            lexeme,
+            line,
+        }
+    }
+}