lib/minjs/exceptions.rb in minjs-0.1.2 vs lib/minjs/exceptions.rb in minjs-0.1.3

@@ -1,15 +1,23 @@
 module Minjs
   class ParseError < StandardError
     def initialize(error_message = nil, lex = nil)
       super(error_message)
-      @lex = lex
+      if lex
+        @lex = lex
+        @lex_pos = lex.pos
+      end
     end
 
     def to_s
       t = ''
       t << super
       t << "\n"
-      t << @lex.debug_str if @lex
+      if @lex
+        line, col = @lex.line_col(@lex_pos)
+        t << "line: #{line}, col: #{col}\n"
+        t << @lex.debug_str(@lex_pos)
+      end
+      t
     end
   end
 end