source: NonGTP/Boost/boost/spirit/attribute/closure_context.hpp @ 857

Revision 857, 1.9 KB checked in by igarcia, 19 years ago (diff)
Line 
1/*=============================================================================
2    Copyright (c) 2002-2003 Joel de Guzman
3    Copyright (c) 2002-2003 Hartmut Kaiser
4    http://spirit.sourceforge.net/
5
6    Use, modification and distribution is subject to the Boost Software
7    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
8    http://www.boost.org/LICENSE_1_0.txt)
9=============================================================================*/
10#if !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_HPP)
11#define BOOST_SPIRIT_CLOSURE_CONTEXT_HPP
12
13///////////////////////////////////////////////////////////////////////////////
14namespace boost { namespace spirit {
15
16#if !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED)
17#define BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED
18
19///////////////////////////////////////////////////////////////////////////////
20//
21//  closure_context_linker
22//  { helper template for the closure extendability }
23//
24//      This classes can be 'overloaded' (defined elsewhere), to plug
25//      in additional functionality into the closure parsing process.
26//
27///////////////////////////////////////////////////////////////////////////////
28
29template<typename ContextT>
30struct closure_context_linker : public ContextT
31{
32    template <typename ParserT>
33    closure_context_linker(ParserT const& p)
34    : ContextT(p) {}
35
36    template <typename ParserT, typename ScannerT>
37    void pre_parse(ParserT const& p, ScannerT const& scan)
38    { ContextT::pre_parse(p, scan); }
39
40    template <typename ResultT, typename ParserT, typename ScannerT>
41    ResultT&
42    post_parse(ResultT& hit, ParserT const& p, ScannerT const& scan)
43    { return ContextT::post_parse(hit, p, scan); }
44};
45
46#endif // !defined(BOOST_SPIRIT_CLOSURE_CONTEXT_LINKER_DEFINED)
47
48///////////////////////////////////////////////////////////////////////////////
49}} // namespace boost::spirit
50
51#endif // BOOST_SPIRIT_CLOSURE_CONTEXT_HPP
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