Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Hartmut Kaiser
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_SPIRIT_EOL_APRIL_18_2008_0751PM)
Chris@16: #define BOOST_SPIRIT_EOL_APRIL_18_2008_0751PM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: #include <boost/spirit/home/qi/domain.hpp>
Chris@16: #include <boost/spirit/home/qi/parser.hpp>
Chris@16: #include <boost/spirit/home/qi/meta_compiler.hpp>
Chris@16: #include <boost/spirit/home/qi/skip_over.hpp>
Chris@16: #include <boost/spirit/home/support/common_terminals.hpp>
Chris@16: 
Chris@16: namespace boost { namespace spirit
Chris@16: {
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // Enablers
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <>
Chris@16:     struct use_terminal<qi::domain, tag::eol>       // enables eol
Chris@16:       : mpl::true_ {};
Chris@16: }}
Chris@16: 
Chris@16: namespace boost { namespace spirit { namespace qi
Chris@16: {
Chris@16: #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
Chris@16:     using spirit::eol;
Chris@16: #endif
Chris@16:     using spirit::eol_type;
Chris@16: 
Chris@16:     struct eol_parser : primitive_parser<eol_parser>
Chris@16:     {
Chris@16:         template <typename Context, typename Iterator>
Chris@16:         struct attribute
Chris@16:         {
Chris@16:             typedef unused_type type;
Chris@16:         };
Chris@16: 
Chris@16:         template <typename Iterator, typename Context
Chris@16:           , typename Skipper, typename Attribute>
Chris@16:         bool parse(Iterator& first, Iterator const& last
Chris@16:           , Context& /*context*/, Skipper const& skipper
Chris@16:           , Attribute& /*attr*/) const
Chris@16:         {
Chris@16:             qi::skip_over(first, last, skipper);
Chris@16: 
Chris@16:             Iterator it = first;
Chris@16:             bool matched = false;
Chris@16:             if (it != last && *it == '\r')  // CR
Chris@16:             {
Chris@16:                 matched = true;
Chris@16:                 ++it;
Chris@16:             }
Chris@16:             if (it != last && *it == '\n')  // LF
Chris@16:             {
Chris@16:                 matched = true;
Chris@16:                 ++it;
Chris@16:             }
Chris@16: 
Chris@16:             if (!matched)
Chris@16:                 return false;
Chris@16: 
Chris@16:             first = it;
Chris@16:             return true;
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Context>
Chris@16:         info what(Context& /*context*/) const
Chris@16:         {
Chris@16:             return info("eol");
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // Parser generators: make_xxx function (objects)
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename Modifiers>
Chris@16:     struct make_primitive<tag::eol, Modifiers>
Chris@16:     {
Chris@16:         typedef eol_parser result_type;
Chris@16:         result_type operator()(unused_type, unused_type) const
Chris@16:         {
Chris@16:             return result_type();
Chris@16:         }
Chris@16:     };
Chris@16: }}}
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: