lib/sibilant/sinatra.rb in sibilant-0.0.3 vs lib/sibilant/sinatra.rb in sibilant-0.0.4

@@ -3,8 +3,32 @@
 module Sinatra
   module Sibilant
     def sibilant(*args)
       content_type 'application/javascript'
       render :sibilant, *args
+    rescue ::Sibilant::CompilationError => error
+      if settings.development?
+        display_sibilant_compilation_error error
+      else
+        500
+      end
+    end
+
+    def display_sibilant_compilation_error(error)
+      <<-END_JS
+        ;(function() {
+          var pre = document.createElement('PRE');
+          pre.innerHTML = '<h1>Sibilant Compilation Error</h1><code>' + 
+            '#{Rack::Utils.escape_html(error.message).gsub("'", "\\'").gsub("\n", "\\n")}' +
+            '</code>';
+          pre.style.background = 'rgba(255,0,0,0.5)';
+          pre.style.position = 'absolute';
+          pre.style.padding = '25px';
+          pre.style.top = '10px';
+          pre.style.left = '10px';
+          pre.style.margin = '0';
+          document.body.appendChild(pre);
+        })();
+      END_JS
     end
   end
 end