From b408d19f614b47670cd0a0def501266f0d7689b5 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 18 Oct 2022 15:13:29 +0300
Subject: Fix unexpected 'unterminated double-quoted sequence' script error

---
 libbuild2/script/lexer.cxx | 11 ++++-------
 libbuild2/script/lexer.hxx |  2 ++
 2 files changed, 6 insertions(+), 7 deletions(-)

(limited to 'libbuild2/script')

diff --git a/libbuild2/script/lexer.cxx b/libbuild2/script/lexer.cxx
index 7577149..e13bbdb 100644
--- a/libbuild2/script/lexer.cxx
+++ b/libbuild2/script/lexer.cxx
@@ -24,10 +24,7 @@ namespace build2
       bool q (true); // quotes
 
       if (!esc)
-      {
-        assert (!state_.empty ());
-        esc = state_.top ().escapes;
-      }
+        esc = current_state ().escapes;
 
       switch (m)
       {
@@ -84,7 +81,7 @@ namespace build2
       }
 
       assert (ps == '\0');
-      state_.push (
+      mode_impl (
         state {m, data, nullopt, false, false, ps, s, n, q, *esc, s1, s2});
     }
 
@@ -93,7 +90,7 @@ namespace build2
     {
       token r;
 
-      switch (state_.top ().mode)
+      switch (mode ())
       {
       case lexer_mode::command_expansion:
       case lexer_mode::here_line_single:
@@ -119,7 +116,7 @@ namespace build2
       xchar c (get ());
       uint64_t ln (c.line), cn (c.column);
 
-      const state& st (state_.top ());
+      const state& st (current_state ());
       lexer_mode m (st.mode);
 
       auto make_token = [&sep, &m, ln, cn] (type t)
diff --git a/libbuild2/script/lexer.hxx b/libbuild2/script/lexer.hxx
index dbfdfcc..3cbcc03 100644
--- a/libbuild2/script/lexer.hxx
+++ b/libbuild2/script/lexer.hxx
@@ -112,6 +112,8 @@ namespace build2
       const redirect_aliases_type& redirect_aliases;
 
     protected:
+      using build2::lexer::mode; // Getter.
+
       lexer (istream& is, const path_name& name, uint64_t line,
              const char* escapes,
              bool set_mode,
-- 
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