Update of /cvsroot/boost/boost/libs/xpressive/proto/test
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv6138
Modified Files:
lambda.cpp
Log Message:
use vararg, nary_expr and nary fold to simplify LambdaGrammar
Index: lambda.cpp
===================================================================
RCS file: /cvsroot/boost/boost/libs/xpressive/proto/test/lambda.cpp,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -d -r1.4 -r1.5
--- lambda.cpp 26 Jan 2007 03:06:15 -0000 1.4
+++ lambda.cpp 1 Feb 2007 01:23:56 -0000 1.5
@@ -49,14 +49,15 @@
{};
};
+using proto::_;
+
// The lambda grammar, with the transforms for calculating the max arity
struct LambdaGrammar
- : max_arity<
- proto::or_<
- placeholder_arity< proto::meta::terminal<placeholder<proto::_> > >
- , proto::trans::always< proto::meta::terminal<proto::_>,
mpl::int_<0> >
- , proto::trans::arg< proto::meta::unary_expr<proto::_,
LambdaGrammar> >
- , proto::trans::fold< proto::meta::binary_expr<proto::_,
LambdaGrammar, LambdaGrammar> >
+ : proto::or_<
+ placeholder_arity< proto::meta::terminal< placeholder<_> > >
+ , proto::trans::always< proto::meta::terminal<_>, mpl::int_<0> >
+ , proto::trans::fold<
+ proto::meta::nary_expr<_, proto::vararg< max_arity< LambdaGrammar
> > >
>
>
{};
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