/*============================================================================= | |
Copyright (c) 2001-2011 Hartmut Kaiser | |
Copyright (c) 2001-2011 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 | |