From b4bcbb30d4c132618bfbc53da088bc9c223daf5c Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Wed, 19 Oct 2022 19:56:05 +0300
Subject: Fix parser::mode() so for peeked token on replay it returns its
 lexing mode

---
 libbuild2/parser.hxx | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'libbuild2')

diff --git a/libbuild2/parser.hxx b/libbuild2/parser.hxx
index 0d1e9e2..0d7e900 100644
--- a/libbuild2/parser.hxx
+++ b/libbuild2/parser.hxx
@@ -696,15 +696,24 @@ namespace build2
                 replay_data_[replay_i_].mode == m);
     }
 
+    // In the replay mode return the lexing mode of the token returned by the
+    // subsequent next() or peek() call.
+    //
     lexer_mode
     mode () const
     {
       if (replay_ != replay::play)
+      {
         return lexer_->mode ();
+      }
       else
       {
-        assert (replay_i_ != replay_data_.size ());
-        return replay_data_[replay_i_].mode;
+        assert (!peeked_ || replay_i_ != 0);
+
+        size_t i (!peeked_ ? replay_i_ : replay_i_ - 1);
+        assert (i != replay_data_.size ());
+
+        return replay_data_[i].mode;
       }
     }
 
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