lexer: Avoiding computation after find an EOF

When looking ahead, there was no check ensuring we reach EOF.

Signed-off-by: Carlos Maniero <carlos@maniero.me>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/lexer.c b/src/lexer.c
index 7245a41..3f6948a 100644
--- a/src/lexer.c
+++ b/src/lexer.c
@@ -238,6 +238,10 @@ lexer_lookahead(lexer_t *lexer, token_t *token, size_t level)
   while (level != 0) {
     lexer_next_token(lexer, token);
     level--;
+
+    if (token->kind == TOKEN_EOF) {
+      break;
+    }
   }
 
   lexer->cur = cur;