From f59d82eb8fda3ddcf790556c6c3615e40ae8b15b Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 3 Oct 2022 21:23:22 +0300
Subject: Add support for 'for' loop second (... | for x) and third (for x
 <...) forms in script

---
 libbuild2/build/script/parser.test.cxx | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'libbuild2/build/script/parser.test.cxx')

diff --git a/libbuild2/build/script/parser.test.cxx b/libbuild2/build/script/parser.test.cxx
index 061f3f8..7e9c612 100644
--- a/libbuild2/build/script/parser.test.cxx
+++ b/libbuild2/build/script/parser.test.cxx
@@ -37,11 +37,32 @@ namespace build2
         enter (environment&, const location&) override {}
 
         virtual void
-        run (environment&,
+        run (environment& env,
              const command_expr& e,
              const iteration_index* ii, size_t i,
-             const location&) override
+             const function<command_function>& cf,
+             const location& ll) override
         {
+          // If the functions is specified, then just execute it with an empty
+          // stdin so it can perform the housekeeping (stop replaying tokens,
+          // increment line index, etc).
+          //
+          if (cf != nullptr)
+          {
+            assert (e.size () == 1 && !e[0].pipe.empty ());
+
+            const command& c (e[0].pipe.back ());
+
+            // Must be enforced by the caller.
+            //
+            assert (!c.out && !c.err && !c.exit);
+
+            cf (env, c.arguments,
+                fdopen_null (), false /* pipe */,
+                nullopt /* deadline */, c,
+                ll);
+          }
+
           cout << e;
 
           if (line_ || iterations_)
-- 
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