1 files changed, 14 insertions, 2 deletions

diff --git a/src/utils.rs b/src/utils.rs
index 902f939..3e5ff55 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,4 +1,4 @@
-use crate::consts::FONT_PATH;
+use crate::{consts::FONT_PATH, lisp::error::LispError, message::Message};
 use sdl2::{
     keyboard::{Keycode, Mod},
     pixels::Color,
@@ -26,7 +26,10 @@ pub fn draw_text<S: AsRef<str>>(
     let mut font = ttf_context.load_font(FONT_PATH, 17).unwrap();
     font.set_style(sdl2::ttf::FontStyle::NORMAL);
     font.set_hinting(sdl2::ttf::Hinting::Mono);
-    let surface = font.render(text.as_ref()).blended(color).unwrap();
+    let surface = font
+        .render(if text.is_empty() { " " } else { text.as_ref() })
+        .blended(color)
+        .unwrap();
     let texture = texture_creator
         .create_texture_from_surface(&surface)
         .unwrap();
@@ -43,3 +46,12 @@ pub fn is_copy_event(keycode: Option<Keycode>, keymod: Mod) -> bool {
 pub fn is_paste_event(keycode: Option<Keycode>, keymod: Mod) -> bool {
     keycode == Some(Keycode::V) && (keymod == Mod::LCTRLMOD || keymod == Mod::RCTRLMOD)
 }
+
+pub fn handle_error(err: LispError, src: &str) -> Message {
+    let mut message = Message::new();
+    match err {
+        LispError::Parse(p) => message.set_error(p.display(&src)),
+        eval_err => message.set_error(eval_err.to_string()),
+    }
+    message
+}