Update of /cvsroot/boost/boost/boost/xpressive/detail/core/matcher
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv3520/detail/core/matcher
Modified Files:
action_matcher.hpp
Log Message:
attribute placeholders get real T& instead of opt<T> in actions
Index: action_matcher.hpp
===================================================================
RCS file:
/cvsroot/boost/boost/boost/xpressive/detail/core/matcher/action_matcher.hpp,v
retrieving revision 1.24
retrieving revision 1.25
diff -u -d -r1.24 -r1.25
--- action_matcher.hpp 17 Jun 2007 02:08:36 -0000 1.24
+++ action_matcher.hpp 21 Jun 2007 23:11:11 -0000 1.25
@@ -95,6 +95,9 @@
struct attr_with_default_tag
{};
+ template<typename T>
+ struct opt;
+
///////////////////////////////////////////////////////////////////////////////
// action_context
//
@@ -125,6 +128,16 @@
}
};
+ template<typename Expr, typename Arg>
+ struct eval_terminal<Expr, opt<Arg> >
+ {
+ typedef Arg const &result_type;
+ result_type operator()(Expr &expr, action_context const &) const
+ {
+ return proto::arg(expr);
+ }
+ };
+
template<typename Expr, typename Type, typename Int>
struct eval_terminal<Expr, action_arg<Type, Int> >
{
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