From 323e774380995c04ae705e29ae0e51d62246333d Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 9 Nov 2017 17:06:35 +0200
Subject: Add support for for-loop

The semantics is similar to the C++11 range-based for:

list = 1 2 3
for i: $list
  print $i

Note that there is no scoping of any kind for the loop variable ('i' in
the above example).

See tests/loop/for.test for some examples/ideas.

In the future the plan is to also support more general while-loop as well
as break and continue.
---
 build2/variable.ixx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'build2/variable.ixx')

diff --git a/build2/variable.ixx b/build2/variable.ixx
index 04cf6dc..6126a4e 100644
--- a/build2/variable.ixx
+++ b/build2/variable.ixx
@@ -132,7 +132,9 @@ namespace build2
     // Find base if any.
     //
     const value_type* b (v.type);
-    for (; b != nullptr && b != &value_traits<T>::value_type; b = b->base) ;
+    for (;
+         b != nullptr && b != &value_traits<T>::value_type;
+         b = b->base_type) ;
     assert (b != nullptr);
 
     return *static_cast<const T*> (v.type->cast == nullptr
-- 
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