mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-16 10:49:05 +00:00
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2015 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
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)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_PARSER_HPP
|
|
#define SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_PARSER_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/tuple/tuple.hpp>
|
|
#include <sprout/weed/eval_result.hpp>
|
|
#include <sprout/weed/expr/tag.hpp>
|
|
#include <sprout/weed/traits/type/is_char_type.hpp>
|
|
#include <sprout/weed/traits/type/is_string.hpp>
|
|
#include <sprout/weed/traits/parser/is_parser.hpp>
|
|
#include <sprout/weed/traits/expr/tag_of.hpp>
|
|
#include <sprout/weed/traits/parser/attribute_of.hpp>
|
|
#include <sprout/weed/context/parse_context_fwd.hpp>
|
|
|
|
namespace sprout {
|
|
namespace weed {
|
|
//
|
|
// parse_context::eval
|
|
//
|
|
template<typename Iterator>
|
|
template<typename Expr>
|
|
struct parse_context<Iterator>::eval<
|
|
Expr,
|
|
typename std::enable_if<
|
|
std::is_same<
|
|
typename sprout::weed::traits::tag_of<Expr>::type,
|
|
sprout::weed::tag::terminal
|
|
>::value
|
|
&& sprout::weed::traits::is_parser<
|
|
typename sprout::tuples::tuple_element<0, typename Expr::args_type>::type
|
|
>::value
|
|
&& !sprout::weed::traits::is_char_type<
|
|
typename sprout::tuples::tuple_element<0, typename Expr::args_type>::type
|
|
>::value
|
|
&& !sprout::weed::traits::is_string<
|
|
typename sprout::tuples::tuple_element<0, typename Expr::args_type>::type
|
|
>::value
|
|
>::type
|
|
> {
|
|
private:
|
|
typedef sprout::weed::parse_context<Iterator> context_type;
|
|
typedef typename sprout::tuples::tuple_element<0, typename Expr::args_type>::type parser_type;
|
|
public:
|
|
typedef typename sprout::weed::traits::attribute_of<
|
|
parser_type,
|
|
Iterator,
|
|
context_type
|
|
>::type attribute_type;
|
|
typedef sprout::weed::eval_result<context_type, Iterator, attribute_type> result_type;
|
|
private:
|
|
template<typename Result>
|
|
SPROUT_CONSTEXPR result_type call(
|
|
Result const& res,
|
|
context_type const& ctx
|
|
) const
|
|
{
|
|
return result_type(res, context_type(ctx, res.current()));
|
|
}
|
|
public:
|
|
SPROUT_CONSTEXPR result_type operator()(
|
|
Expr const& expr,
|
|
context_type const& ctx
|
|
) const
|
|
{
|
|
return call(
|
|
sprout::tuples::get<0>(expr.args())
|
|
.template operator()(ctx.begin(), ctx.end(), ctx),
|
|
ctx
|
|
);
|
|
}
|
|
};
|
|
} // namespace weed
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_PARSER_HPP
|