mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2017 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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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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#ifndef SPROUT_WEED_PARSER_AUXILIARY_EOL_HPP
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#define SPROUT_WEED_PARSER_AUXILIARY_EOL_HPP
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#include <sprout/config.hpp>
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#include <sprout/workaround/std/cstddef.hpp>
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#include <sprout/iterator/next.hpp>
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#include <sprout/type_traits/identity.hpp>
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#include <sprout/weed/unused.hpp>
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#include <sprout/weed/parser_result.hpp>
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#include <sprout/weed/parser/parser_base.hpp>
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#include <sprout/detail/char_literal.hpp>
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namespace sprout {
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namespace weed {
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//
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// eol_p
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//
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struct eol_p
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: public sprout::weed::parser_base
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{
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public:
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template<typename Context, typename Iterator>
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struct attribute
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: public sprout::identity<sprout::weed::unused>
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{};
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template<typename Context, typename Iterator>
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struct result
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: public sprout::identity<sprout::weed::parser_result<Iterator, typename attribute<Context, Iterator>::type> >
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{};
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public:
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template<typename Context, typename Iterator>
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SPROUT_CONSTEXPR typename result<Context, Iterator>::type operator()(
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Iterator first, Iterator last,
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Context const&
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) const
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{
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typedef typename result<Context, Iterator>::type result_type;
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typedef typename attribute<Context, Iterator>::type attribute_type;
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typedef typename std::iterator_traits<Iterator>::value_type elem_type;
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return first != last
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? *first == SPROUT_CHAR_LITERAL('\r', elem_type)
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? sprout::next(first) != last
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? *sprout::next(first) == SPROUT_CHAR_LITERAL('\n', elem_type)
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? result_type(true, sprout::next(sprout::next(first)), attribute_type())
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: result_type(true, sprout::next(first), attribute_type())
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: result_type(true, sprout::next(first), attribute_type())
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: *first == SPROUT_CHAR_LITERAL('\n', elem_type)
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? result_type(true, sprout::next(first), attribute_type())
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: result_type(false, first, attribute_type())
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: result_type(false, first, attribute_type())
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;
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}
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};
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//
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// eol
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//
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SPROUT_STATIC_CONSTEXPR sprout::weed::eol_p eol = sprout::weed::eol_p();
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} // namespace weed
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} // namespace sprout
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#endif // #ifndef SPROUT_WEED_PARSER_AUXILIARY_EOL_HPP
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