117 lines
3.7 KiB
Plaintext
117 lines
3.7 KiB
Plaintext
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/*=============================================================================
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Copyright (c) 2002-2003 Joel de Guzman
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Copyright (c) 2002-2003 Hartmut Kaiser
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Copyright (c) 2003 Martin Wille
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#if !defined(BOOST_SPIRIT_PARSER_TRAITS_IPP)
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#define BOOST_SPIRIT_PARSER_TRAITS_IPP
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#include <boost/spirit/home/classic/core/composite/operators.hpp>
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace spirit {
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BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
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namespace impl
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{
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///////////////////////////////////////////////////////////////////////////
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struct parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_alternative = false);
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BOOST_STATIC_CONSTANT(bool, is_sequence = false);
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BOOST_STATIC_CONSTANT(bool, is_sequential_or = false);
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BOOST_STATIC_CONSTANT(bool, is_intersection = false);
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BOOST_STATIC_CONSTANT(bool, is_difference = false);
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BOOST_STATIC_CONSTANT(bool, is_exclusive_or = false);
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BOOST_STATIC_CONSTANT(bool, is_optional = false);
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BOOST_STATIC_CONSTANT(bool, is_kleene_star = false);
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BOOST_STATIC_CONSTANT(bool, is_positive = false);
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};
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template <typename ParserT>
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struct parser_type_traits : public parser_type_traits_base {
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// no definition here, fallback for all not explicitly mentioned parser
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// types
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};
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template <typename A, typename B>
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struct parser_type_traits<alternative<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_alternative = true);
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};
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template <typename A, typename B>
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struct parser_type_traits<sequence<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_sequence = true);
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};
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template <typename A, typename B>
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struct parser_type_traits<sequential_or<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_sequential_or = true);
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};
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template <typename A, typename B>
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struct parser_type_traits<intersection<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_intersection = true);
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};
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template <typename A, typename B>
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struct parser_type_traits<difference<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_difference = true);
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};
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template <typename A, typename B>
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struct parser_type_traits<exclusive_or<A, B> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_exclusive_or = true);
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};
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template <typename S>
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struct parser_type_traits<optional<S> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_optional = true);
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};
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template <typename S>
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struct parser_type_traits<kleene_star<S> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_kleene_star = true);
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};
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template <typename S>
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struct parser_type_traits<positive<S> >
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: public parser_type_traits_base {
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BOOST_STATIC_CONSTANT(bool, is_positive = true);
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};
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} // namespace impl
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///////////////////////////////////////////////////////////////////////////////
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BOOST_SPIRIT_CLASSIC_NAMESPACE_END
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}} // namespace boost::spirit
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#endif // !defined(BOOST_SPIRIT_PARSER_TRAITS_IPP)
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