misc: cleanup

src/callable.rs

@@ -3,7 +3,7 @@ use std::{cell::RefCell, fmt::Display, rc::Rc};
 use crate::{
     ast::Stmt,
     environment::Environment,
-    interpreter::{execute_block, InterpreterEnvironment, InterpreterSignal, RuntimeError},
+    interpreter::{execute_block, InterpreterEnvironment, InterpreterSignal},
     token::{LiteralType, Token},
 };
 

src/environment.rs

@@ -1,9 +1,6 @@
 use std::{cell::RefCell, collections::HashMap, rc::Rc};
 
-use crate::{
-    callable::Callable,
-    token::{LiteralType, Token},
-};
+use crate::token::{LiteralType, Token};
 
 #[derive(Debug, Clone)]
 pub struct Environment {

src/main.rs

@@ -22,7 +22,7 @@ fn main() -> ExitCode {
                 return ExitCode::from(75);
             }
 
-            if let Err(RunError::RuntimeError(r)) = result {
+            if let Err(RunError::RuntimeError(_r)) = result {
                 return ExitCode::from(70);
             }
 

src/printer.rs

@@ -1,5 +1,6 @@
 use crate::{ast::Expr, token::LiteralType};
 
+#[allow(dead_code)]
 pub fn pretty_print(expr: &Expr) -> String {
     match expr {
         Expr::Binary { left, op, right } => parenthesize(&op.lexeme, &[left, right]),

src/scanner.rs

@@ -72,6 +72,7 @@ impl Scanner {
         Ok(&self.tokens)
     }
 
+    #[allow(dead_code)]
     fn is_at_end(&self) -> bool {
         self.current >= self.source.len()
     }