| /*============================================================================= |
| Copyright (c) 2001-2010 Hartmut Kaiser |
| Copyright (c) 2001-2010 Joel de Guzman |
| |
| 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_EOL_APRIL_18_2008_0751PM) |
| #define BOOST_SPIRIT_EOL_APRIL_18_2008_0751PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/mpl/bool.hpp> |
| #include <boost/spirit/home/qi/domain.hpp> |
| #include <boost/spirit/home/qi/parser.hpp> |
| #include <boost/spirit/home/qi/meta_compiler.hpp> |
| #include <boost/spirit/home/qi/skip_over.hpp> |
| #include <boost/spirit/home/support/common_terminals.hpp> |
| |
| namespace boost { namespace spirit |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Enablers |
| /////////////////////////////////////////////////////////////////////////// |
| template <> |
| struct use_terminal<qi::domain, tag::eol> // enables eol |
| : mpl::true_ {}; |
| }} |
| |
| namespace boost { namespace spirit { namespace qi |
| { |
| using spirit::eol; |
| using spirit::eol_type; |
| |
| struct eol_parser : primitive_parser<eol_parser> |
| { |
| template <typename Context, typename Iterator> |
| struct attribute |
| { |
| typedef unused_type type; |
| }; |
| |
| template <typename Iterator, typename Context |
| , typename Skipper, typename Attribute> |
| bool parse(Iterator& first, Iterator const& last |
| , Context& /*context*/, Skipper const& skipper |
| , Attribute& /*attr*/) const |
| { |
| qi::skip_over(first, last, skipper); |
| |
| Iterator it = first; |
| bool matched = false; |
| if (it != last && *it == '\r') // CR |
| { |
| matched = true; |
| ++it; |
| } |
| if (it != last && *it == '\n') // LF |
| { |
| matched = true; |
| ++it; |
| } |
| |
| if (!matched) |
| return false; |
| |
| first = it; |
| return true; |
| } |
| |
| template <typename Context> |
| info what(Context& /*context*/) const |
| { |
| return info("eol"); |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // Parser generators: make_xxx function (objects) |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Modifiers> |
| struct make_primitive<tag::eol, Modifiers> |
| { |
| typedef eol_parser result_type; |
| result_type operator()(unused_type, unused_type) const |
| { |
| return result_type(); |
| } |
| }; |
| }}} |
| |
| #endif |
| |
| |