added interactive inputs, better error messages, bugfixes

src/error/mod.rs

@@ -1,3 +1,5 @@
+pub mod colors;
+
 #[derive(Debug)]
 pub enum RushError {
     SyntaxError(String),
@@ -7,7 +9,11 @@ pub enum RushError {
 
 impl std::fmt::Display for RushError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{:?}", self)
+        match self {
+            RushError::SyntaxError(msg) => write!(f, "{}", msg),
+            RushError::RuntimeError(msg) => write!(f, "{}", msg),
+            RushError::VariableError(msg) => write!(f, "{}", msg),
+        }
     }
 }