log_error! macro to just log an error but with file and line

src/game/state/login.rs

@@ -7,6 +7,7 @@ use crate::password::Password;
 use crate::player::Player;
 use crate::queue::SendQueue;
 use crate::state::*;
+use crate::log_error;
 
 impl Game {
 	pub fn login(&mut self, token: Token, message: String, state: &Login) -> SendQueue {
@@ -194,7 +195,7 @@ impl Game {
 								}
 							}
 							Ok(None) => {
-								log::error!("Player has no password: {}", player.id);
+								log_error!("Player has no password: {}", player.id);
 								send_queue.push(token, "Error\n", false, None);
 								send_queue.push(
 									token,
@@ -204,7 +205,7 @@ impl Game {
 								);
 							}
 							Err(e) => {
-								log::error!("Database error: {}", e);
+								log_error!("Database error :: {}", e);
 								send_queue.push(token, "Error\n", false, None);
 								send_queue.push(
 									token,

src/macros.rs

@@ -1,3 +1,12 @@
+/// Log a message to the error log and add file and line.
+#[macro_export]
+macro_rules! log_error {
+	($($arg:tt)*) => {
+		let s = std::fmt::format(format_args!($($arg)*));
+		log::error!("{}({}) :: {}", file!(), line!(), s);
+	}
+}
+
 /// Unwrap a Result. If it's Err then log the error and provided format string
 /// and return.
 ///