Update of /cvsroot/boost/boost/boost/xpressive/proto/transform
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv26750/proto/transform
Modified Files:
arg.hpp
Log Message:
bug fixes, work-arounds
Index: arg.hpp
===================================================================
RCS file: /cvsroot/boost/boost/boost/xpressive/proto/transform/arg.hpp,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -d -r1.11 -r1.12
--- arg.hpp 20 Mar 2007 01:27:31 -0000 1.11
+++ arg.hpp 31 May 2007 16:13:06 -0000 1.12
@@ -10,6 +10,7 @@
#define BOOST_PROTO_TRANSFORM_ARG_HPP_EAN_12_16_2006
#include <boost/xpressive/proto/detail/prefix.hpp>
+#include <boost/mpl/apply.hpp>
#include <boost/xpressive/proto/proto_fwd.hpp>
#include <boost/xpressive/proto/traits.hpp>
#include <boost/xpressive/proto/detail/suffix.hpp>
@@ -171,6 +172,26 @@
BOOST_PROTO_IDENTITY_TRANSFORM();
};
+ // Apply an MPL lambda, passing just Expr
+ template<typename Grammar, typename Placeholder>
+ struct apply1
+ : Grammar
+ {
+ apply1();
+
+ template<typename Expr, typename, typename>
+ struct apply
+ : mpl::apply1<Placeholder, Expr>
+ {};
+
+ template<typename Expr, typename State, typename Visitor>
+ static typename apply<Expr, State, Visitor>::type
+ call(Expr const &expr, State const &, Visitor &)
+ {
+ return Placeholder::call(expr);
+ }
+ };
+
}}}
#endif
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