/src/contrib/boost/spirit/home/qi/detail/parse_auto.hpp
http://pythonocc.googlecode.com/ · C++ Header · 183 lines · 139 code · 20 blank · 24 comment · 0 complexity · d38bf7ffe6f9df7564b6bd19920a83dd MD5 · raw file
- /*=============================================================================
- Copyright (c) 2001-2010 Hartmut Kaiser
- Distributed under 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_DETAIL_PARSE_AUTO_DEC_02_2009_0426PM)
- #define BOOST_SPIRIT_DETAIL_PARSE_AUTO_DEC_02_2009_0426PM
- #if defined(_MSC_VER)
- #pragma once
- #endif
- #include <boost/spirit/home/qi/parse.hpp>
- #include <boost/spirit/home/qi/auto/create_parser.hpp>
- #include <boost/utility/enable_if.hpp>
- #include <boost/mpl/not.hpp>
- #include <boost/mpl/and.hpp>
- namespace boost { namespace spirit { namespace qi { namespace detail
- {
- ///////////////////////////////////////////////////////////////////////////
- template <typename Expr>
- struct parse_impl<Expr
- , typename enable_if<traits::meta_create_exists<qi::domain, Expr> >::type>
- {
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, Expr& expr)
- {
- return qi::parse(first, last, create_parser<Expr>(), expr);
- }
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, Expr const& expr)
- {
- return qi::parse(first, last, create_parser<Expr>()
- , const_cast<Expr&>(expr));
- }
- };
- // the following specializations are needed to explicitly disambiguate
- // the two possible specializations for parse_impl<char> and
- // parse_impl<wchar_t>
- template <>
- struct parse_impl<char>
- {
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, char& expr)
- {
- return qi::parse(first, last, create_parser<char>(), expr);
- }
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, char const&)
- {
- return qi::parse(first, last, create_parser<char>());
- }
- };
- template <>
- struct parse_impl<wchar_t>
- {
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, wchar_t& expr)
- {
- return qi::parse(first, last, create_parser<wchar_t>(), expr);
- }
- template <typename Iterator>
- static bool call(Iterator& first, Iterator last, wchar_t const&)
- {
- return qi::parse(first, last, create_parser<wchar_t>());
- }
- };
- ///////////////////////////////////////////////////////////////////////////
- template <typename Expr>
- struct phrase_parse_impl<Expr
- , typename enable_if<traits::meta_create_exists<qi::domain, Expr> >::type>
- {
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, Expr& expr
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<Expr>()
- , skipper, post_skip, expr);
- }
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, Expr const& expr
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<Expr>()
- , skipper, post_skip, const_cast<Expr&>(expr));
- }
- };
- // the following specializations are needed to explicitly disambiguate
- // the two possible specializations for phrase_parse_impl<char> and
- // phrase_parse_impl<wchar_t>
- template <>
- struct phrase_parse_impl<char>
- {
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, char& expr
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<char>()
- , skipper, post_skip, expr);
- }
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, char const&
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<char>()
- , skipper, post_skip);
- }
- };
- template <>
- struct phrase_parse_impl<wchar_t>
- {
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, wchar_t& expr
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<wchar_t>()
- , skipper, post_skip, expr);
- }
- template <typename Iterator, typename Skipper>
- static bool call(Iterator& first, Iterator last, wchar_t const&
- , Skipper const& skipper, BOOST_SCOPED_ENUM(skip_flag) post_skip)
- {
- return qi::phrase_parse(first, last, create_parser<wchar_t>()
- , skipper, post_skip);
- }
- };
- }}}}
- namespace boost { namespace spirit { namespace qi
- {
- ///////////////////////////////////////////////////////////////////////////
- template <typename Iterator, typename Expr>
- inline bool
- parse(
- Iterator& first
- , Iterator last
- , Expr& expr)
- {
- // Make sure the iterator is at least a forward_iterator. If you got a
- // compilation error here, then you are using an input_iterator while
- // calling this function, you need to supply at least a
- // forward_iterator instead.
- BOOST_CONCEPT_ASSERT((ForwardIterator<Iterator>));
- return detail::parse_impl<Expr>::call(first, last, expr);
- }
- ///////////////////////////////////////////////////////////////////////////
- template <typename Iterator, typename Expr, typename Skipper>
- inline bool
- phrase_parse(
- Iterator& first
- , Iterator last
- , Expr& expr
- , Skipper const& skipper
- , BOOST_SCOPED_ENUM(skip_flag) post_skip = skip_flag::postskip)
- {
- // Make sure the iterator is at least a forward_iterator. If you got a
- // compilation error here, then you are using an input_iterator while
- // calling this function, you need to supply at least a
- // forward_iterator instead.
- BOOST_CONCEPT_ASSERT((ForwardIterator<Iterator>));
- return detail::phrase_parse_impl<Expr>::call(
- first, last, expr, skipper, post_skip);
- }
- }}}
- #endif