refactor: remove unused

src/util.rs

@@ -1,49 +0,0 @@
-use crate::token::Expr::{self, List};
-
-pub fn cover_paren(s: String) -> String {
-    format!("({})", s)
-}
-
-pub fn unescape(s: String) -> String {
-    let mut result = String::new();
-    let mut i = 0;
-    while i < s.len() {
-        if s.chars().nth(i).unwrap() == '\\' {
-            match s.chars().nth(i + 1).unwrap() {
-                'n' => result.push('\n'),
-                't' => result.push('\t'),
-                'r' => result.push('\r'),
-                '\\' => result.push('\\'),
-                '"' => result.push('"'),
-                _ => result.push(s.chars().nth(i + 1).unwrap()),
-            }
-            i += 2;
-        } else {
-            result.push(s.chars().nth(i).unwrap());
-            i += 1;
-        }
-    }
-    result
-}
-
-pub fn unwrap_list_nest(ast: Expr) -> Vec<Expr> {
-    let mut result: Vec<Expr> = Vec::new();
-
-    match ast.clone() {
-        List(l, _) => {
-            for expr in l.iter() {
-                
-                result.push(expr.clone());
-
-            }
-        }
-        _ => {
-            // This probably will not happen because everything is wrapped
-            // in list. So it would be impossible that the ast is not a list.
-            eprintln!("Possibly a bug in the compiler, you shouln't get this messages.");
-            dbg!(ast);
-        }
-    };
-
-    result
-}