You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
172 lines
5.6 KiB
C++
172 lines
5.6 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2002-2003 Hartmut Kaiser
|
|
http://spirit.sourceforge.net/
|
|
|
|
Use, modification and distribution is subject to the Boost Software
|
|
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
|
http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#if !defined(BOOST_SPIRIT_FUNDAMENTAL_IPP)
|
|
#define BOOST_SPIRIT_FUNDAMENTAL_IPP
|
|
|
|
#include <boost/mpl/int.hpp>
|
|
|
|
namespace boost { namespace spirit {
|
|
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
|
|
|
|
namespace impl
|
|
{
|
|
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Helper template for counting the number of nodes contained in a
|
|
// given parser type.
|
|
// All parser_category type parsers are counted as nodes.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template <typename CategoryT>
|
|
struct nodes;
|
|
|
|
template <>
|
|
struct nodes<plain_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (LeafCountT::value + 1));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct nodes<unary_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::subject_t subject_t;
|
|
typedef typename subject_t::parser_category_t subject_category_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (nodes<subject_category_t>
|
|
::template count<subject_t, LeafCountT>::value + 1));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct nodes<action_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::subject_t subject_t;
|
|
typedef typename subject_t::parser_category_t subject_category_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (nodes<subject_category_t>
|
|
::template count<subject_t, LeafCountT>::value + 1));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct nodes<binary_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::left_t left_t;
|
|
typedef typename ParserT::right_t right_t;
|
|
typedef typename left_t::parser_category_t left_category_t;
|
|
typedef typename right_t::parser_category_t right_category_t;
|
|
|
|
typedef count self_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int,
|
|
leftcount = (nodes<left_category_t>
|
|
::template count<left_t, LeafCountT>::value));
|
|
BOOST_STATIC_CONSTANT(int,
|
|
rightcount = (nodes<right_category_t>
|
|
::template count<right_t, LeafCountT>::value));
|
|
BOOST_STATIC_CONSTANT(int,
|
|
value = ((self_t::leftcount) + (self_t::rightcount) + 1));
|
|
};
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Helper template for counting the number of leaf nodes contained in a
|
|
// given parser type.
|
|
// Only plain_parser_category type parsers are counted as leaf nodes.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template <typename CategoryT>
|
|
struct leafs;
|
|
|
|
template <>
|
|
struct leafs<plain_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (LeafCountT::value + 1));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct leafs<unary_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::subject_t subject_t;
|
|
typedef typename subject_t::parser_category_t subject_category_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (leafs<subject_category_t>
|
|
::template count<subject_t, LeafCountT>::value));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct leafs<action_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::subject_t subject_t;
|
|
typedef typename subject_t::parser_category_t subject_category_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int, value = (leafs<subject_category_t>
|
|
::template count<subject_t, LeafCountT>::value));
|
|
};
|
|
};
|
|
|
|
template <>
|
|
struct leafs<binary_parser_category> {
|
|
|
|
template <typename ParserT, typename LeafCountT>
|
|
struct count {
|
|
|
|
typedef typename ParserT::left_t left_t;
|
|
typedef typename ParserT::right_t right_t;
|
|
typedef typename left_t::parser_category_t left_category_t;
|
|
typedef typename right_t::parser_category_t right_category_t;
|
|
|
|
typedef count self_t;
|
|
|
|
BOOST_STATIC_CONSTANT(int,
|
|
leftcount = (leafs<left_category_t>
|
|
::template count<left_t, LeafCountT>::value));
|
|
BOOST_STATIC_CONSTANT(int,
|
|
rightcount = (leafs<right_category_t>
|
|
::template count<right_t, LeafCountT>::value));
|
|
BOOST_STATIC_CONSTANT(int,
|
|
value = (self_t::leftcount + self_t::rightcount));
|
|
};
|
|
};
|
|
|
|
} // namespace impl
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_END
|
|
|
|
}} // namespace boost::spirit
|
|
|
|
#endif // !defined(BOOST_SPIRIT_FUNDAMENTAL_IPP)
|