Subject: [Boost-commit] svn:boost r57904 - trunk/boost/spirit/home/support
From: hartmut.kaiser_at_[hidden]
Date: 2009-11-24 15:56:31
Author: hkaiser
Date: 2009-11-24 15:56:31 EST (Tue, 24 Nov 2009)
New Revision: 57904
URL: http://svn.boost.org/trac/boost/changeset/57904
Log:
Spirit: added specializations for the push_back CP for optional attribute values
Text files modified:
trunk/boost/spirit/home/support/container.hpp | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
Modified: trunk/boost/spirit/home/support/container.hpp
==============================================================================
--- trunk/boost/spirit/home/support/container.hpp (original)
+++ trunk/boost/spirit/home/support/container.hpp 2009-11-24 15:56:31 EST (Tue, 24 Nov 2009)
@@ -273,6 +273,30 @@
}
};
+ template <typename Container, typename T>
+ struct push_back_container<Container, optional<T> >
+ {
+ static void call(Container& c, optional<T> const& val)
+ {
+ if (val)
+ push_back(c, boost::get<T>(val));
+ }
+ };
+
+ template <typename Container, typename T>
+ struct push_back_container<optional<Container>, optional<T> >
+ {
+ static void call(optional<Container>& c, optional<T> const& val)
+ {
+ if (val)
+ {
+ if (!c)
+ c = Container();
+ push_back(boost::get<Container>(c), boost::get<T>(val));
+ }
+ }
+ };
+
namespace detail
{
template <typename T>