parser : match plus lisible pour parse_backslash

src/control.rs

@@ -1,6 +1,6 @@
 use crate::command::Command;
 use crate::exit_code::ExitCode;
-use crate::interface::{get_user_input, print_prompt};
+use crate::interface::get_user_input;
 use crate::parser::parse;
 
 fn exit(code: &ExitCode) {
@@ -13,7 +13,6 @@ pub fn run() {
     let mut current_exit_code = ExitCode::new(0);
 
     loop {
-        print_prompt();
         let user_input = get_user_input();
 
         if user_input.is_some() {

src/interface.rs

@@ -1,21 +1,22 @@
 use std::io::Write;
 use std::io::{stdin, stdout};
 
-pub fn print_prompt() {
+fn print_prompt() {
     print!("$ ");
     stdout().flush().unwrap();
 }
 
 pub fn get_user_input() -> Option<String> {
+    print_prompt();
+
     let mut user_input = String::new();
 
     let bytes_read = stdin()
         .read_line(&mut user_input)
         .expect("error reading user input");
 
-    if bytes_read == 0 {
-        None
-    } else {
-        Some(user_input)
+    match bytes_read {
+        0 => None,
+        _ => Some(user_input),
     }
 }

src/parser.rs

@@ -17,11 +17,10 @@ fn parse_quote(characters: &mut Vec<char>) -> String {
 }
 
 fn parse_backslash(characters: &mut Vec<char>) -> Option<char> {
-    let mut escaped_char: Option<char> = None;
-
-    if !characters.is_empty() {
-        escaped_char = Some(characters.pop().unwrap());
-    }
+    let escaped_char = match characters.is_empty() {
+        false => Some(characters.pop().unwrap()),
+        true => None,
+    };
 
     escaped_char
 }