parser: Do not crash if last_loken is unset

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/parser/parser_prod.nit b/src/parser/parser_prod.nit
index 2ec5db6..43abe9e 100644 (file)
--- a/src/parser/parser_prod.nit
+++ b/src/parser/parser_prod.nit
@@ -72,6 +72,9 @@ redef class Prod
                if first_token == null then
                        return "????"
                end
+               if last_token == null then
+                       return "{first_token.locate}--????"
+               end
                var lastpos = last_token.pos + last_token.text.length - 1
                if first_token.line == last_token.line then
                        return "{first_token.locate}--{lastpos}"

diff --git a/src/parser/xss/nodes.xss b/src/parser/xss/nodes.xss
index 46cfafd..71d4836 100644 (file)
--- a/src/parser/xss/nodes.xss
+++ b/src/parser/xss/nodes.xss
@@ -100,6 +100,9 @@ redef class Prod
                if first_token == null then
                        return "????"
                end
+               if last_token == null then
+                       return "{first_token.locate}--????"
+               end
                var lastpos = last_token.pos + last_token.text.length - 1
                if first_token.line == last_token.line then
                        return "{first_token.locate}--{lastpos}"