feat(error): display filename with the error message

src/error_display.rs

@@ -4,23 +4,23 @@ use crate::{
 };
 
 pub trait OSDBError {
-    fn display(&self);
+    fn display(&self, file: &str);
 }
 
 impl OSDBError for MetaCommandParseError {
-    fn display(&self) {
-        println!("{self}")
+    fn display(&self, file: &str) {
+        println!("{file}: {self}")
     }
 }
 
 impl OSDBError for StatementParseError {
-    fn display(&self) {
-        println!("{self}")
+    fn display(&self, file: &str) {
+        println!("{file}: {self}")
     }
 }
 
 impl OSDBError for CommandParseError {
-    fn display(&self) {
-        println!("{self}")
+    fn display(&self, file: &str) {
+        println!("{file}: {self}")
     }
 }

src/main.rs

@@ -14,7 +14,7 @@ fn main() {
                     break;
                 }
             }
-            Err(err) => err.display(),
+            Err(err) => err.display("<stdin>"),
         }
     }
     println!("Good-bye");