parser: do not crash on tokens without location

[nit.git] / src / parser / lexer_work.nit

diff --git a/src/parser/lexer_work.nit b/src/parser/lexer_work.nit
index 4a0820e..0b2258b 100644 (file)
--- a/src/parser/lexer_work.nit
+++ b/src/parser/lexer_work.nit
@@ -127,15 +127,17 @@ class Lexer
                t = get_token
                while t == null do t = get_token
 
-               var l = last_token
-               if l != null then
-                       l.next_token = t
-                       t.prev_token = l
-               else
-                       _file.first_token = t
+               if t._location != null then
+                       var l = last_token
+                       if l != null then
+                               l.next_token = t
+                               t.prev_token = l
+                       else
+                               _file.first_token = t
+                       end
+                       last_token = t
                end
 
-               last_token = t
                _token = t
                return t
        end