source: NonGTP/Boost/boost/spirit/core/composite/impl/optional.ipp @ 857

Revision 857, 1.0 KB checked in by igarcia, 19 years ago (diff)
Line 
1/*=============================================================================
2    Copyright (c) 1998-2003 Joel de Guzman
3    Copyright (c) 2001 Daniel Nuffer
4    Copyright (c) 2002 Hartmut Kaiser
5    http://spirit.sourceforge.net/
6
7    Use, modification and distribution is subject to the Boost Software
8    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
9    http://www.boost.org/LICENSE_1_0.txt)
10=============================================================================*/
11#if !defined(BOOST_SPIRIT_OPTIONAL_IPP)
12#define BOOST_SPIRIT_OPTIONAL_IPP
13
14namespace boost { namespace spirit {
15
16    ///////////////////////////////////////////////////////////////////////////
17    //
18    //  optional class implementation
19    //
20    ///////////////////////////////////////////////////////////////////////////
21    template <typename S>
22    optional<S>
23    operator!(parser<S> const& a)
24    {
25        return optional<S>(a.derived());
26    }
27
28}} // namespace boost::spirit
29
30#endif
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