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add Sprout.Weed ->* Attribute-conversion

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This commit is contained in:
bolero-MURAKAMI 2012-05-31 22:28:58 +09:00
parent fa3851227e
commit 3a968fa5ac
35 changed files with 369 additions and 112 deletions
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1
sprout/weed/context/parse_context/operator.hpp
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@ -11,5 +11,6 @@
#include <sprout/weed/context/parse_context/operator/modulus.hpp>
#include <sprout/weed/context/parse_context/operator/minus.hpp>
#include <sprout/weed/context/parse_context/operator/bitwise_or.hpp>
#include <sprout/weed/context/parse_context/operator/mem_ptr.hpp>
#endif // #ifndef SPROUT_WEED_CONTEXT_PARSE_CONTEXT_OPERATOR_HPP

81
sprout/weed/context/parse_context/operator/mem_ptr.hpp Normal file
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@ -0,0 +1,81 @@
#ifndef SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_OPERATOR_MEM_PTR_HPP
#define SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_OPERATOR_MEM_PTR_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/expr/eval.hpp>
#include <sprout/weed/attr_cnv/result_of/mem_ptr.hpp>
#include <sprout/weed/attr_cnv/mem_ptr.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::mem_ptr
>::value
>::type
> {
private:
typedef sprout::weed::parse_context<Iterator> context_type;
typedef typename sprout::tuples::tuple_element<0, typename Expr::args_type>::type expr1_type;
typedef typename sprout::tuples::tuple_element<1, typename Expr::args_type>::type expr2_type;
public:
typedef typename sprout::weed::attr_cnv::result_of::mem_ptr<
typename sprout::weed::traits::attribute_of<expr1_type, Iterator, context_type>::type,
typename sprout::tuples::tuple_element<0, typename expr2_type::args_type>::type
>::type attribute_type;
typedef sprout::weed::eval_result<context_type, Iterator, attribute_type> result_type;
private:
template<typename Result1>
SPROUT_CONSTEXPR result_type call_1(
typename Expr::args_type const& args,
context_type const& ctx,
Result1 const& res
) const
{
return res.success()
? result_type(
true,
res.current(),
sprout::weed::attr_cnv::mem_ptr(
res.attr(), sprout::tuples::get<0>(sprout::tuples::get<1>(args).args())
),
context_type(ctx, res.current())
)
: result_type(false, ctx.begin(), attribute_type(), ctx)
;
}
SPROUT_CONSTEXPR result_type call(
typename Expr::args_type const& args,
context_type const& ctx
) const
{
return call_1(args, ctx, sprout::weed::eval(sprout::tuples::get<0>(args), ctx));
}
public:
SPROUT_CONSTEXPR result_type operator()(
Expr const& expr,
context_type const& ctx
) const
{
return call(expr.args(), ctx);
}
};
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_CONTEXT_PARSE_CONTEXT_TERMINAL_OPERATOR_MEM_PTR_HPP

4
sprout/weed/context/parse_context/terminal/parser.hpp
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@ -8,6 +8,7 @@
#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>
@ -26,6 +27,9 @@ namespace sprout {
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