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