mirror of
https://github.com/matrix-construct/construct
synced 2024-11-29 10:12:39 +01:00
ircd::json: Rename parse to tuple.
This commit is contained in:
Jason Volk
parent
7bfaa5ec08
commit
bc19a795d8
3 changed files with 187 additions and 178 deletions
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@ -91,7 +91,7 @@ std::ostream &operator<<(std::ostream &, const path &);
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#include "json/object.h"
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#include "json/value.h"
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#include "json/index.h"
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#include "json/parse.h"
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#include "json/tuple.h"
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namespace ircd {
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@ -20,7 +20,85 @@
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*/
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#pragma once
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#define HAVE_IRCD_JSON_PARSE_H
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#define HAVE_IRCD_JSON_TUPLE_H
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namespace ircd {
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namespace json {
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struct tuple_base
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{
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// class must be empty for EBO
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};
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template<class... T>
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struct tuple
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:tuple_base
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,std::tuple<T...>
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{
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using tuple_type = std::tuple<T...>;
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static constexpr size_t size()
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{
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return std::tuple_size<tuple_type>();
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}
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using std::tuple<T...>::tuple;
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};
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template<class tuple>
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using tuple_type = typename tuple::tuple_type;
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template<class tuple>
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using tuple_size = std::tuple_size<tuple_type<tuple>>;
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template<size_t i,
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class tuple>
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using tuple_element = typename std::tuple_element<i, tuple_type<tuple>>::type;
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template<class tuple>
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constexpr auto &
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stdcast(const tuple &o)
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{
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return static_cast<const typename tuple::tuple_type &>(o);
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}
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template<class tuple>
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constexpr auto &
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stdcast(tuple &o)
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{
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return static_cast<typename tuple::tuple_type &>(o);
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}
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template<class... T>
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constexpr auto
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size(const tuple<T...> &t)
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{
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return t.size();
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}
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template<size_t i,
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class... T>
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constexpr auto &
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get(const tuple<T...> &t)
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{
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return std::get<i>(t);
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}
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template<size_t i,
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class... T>
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constexpr auto &
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get(tuple<T...> &t)
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{
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return std::get<i>(t);
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}
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template<size_t i,
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class tuple>
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constexpr const char *
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reflect(const tuple &t)
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{
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return t._member_(i);
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}
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#define IRCD_MEMBERS(_vals_...) \
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static constexpr const char *_member_(const size_t i) \
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@ -33,233 +111,129 @@ static constexpr const char *_member_(const size_t i) \
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return val[i]; \
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}
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namespace ircd {
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namespace json {
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struct basic_parse
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{
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};
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template<class... T>
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struct parse
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:basic_parse
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,std::tuple<T...>
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{
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using tuple_type = std::tuple<T...>;
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static constexpr size_t size()
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{
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return std::tuple_size<tuple_type>();
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}
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parse() = default;
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template<class R> parse(R &r, const json::object &obj);
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};
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template<class... T>
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template<class R>
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parse<T...>::parse(R &r,
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const json::object &object)
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{
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std::for_each(std::begin(object), std::end(object), [this, &r]
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(auto &&member)
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{
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at(r, member.first, [&member]
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(auto&& target)
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{
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using target_type = decltype(target);
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using cast_type = typename std::remove_reference<target_type>::type; try
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{
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target = lex_cast<cast_type>(member.second);
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}
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catch(const bad_lex_cast &e)
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{
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throw parse_error("member \"%s\" must convert to '%s'",
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member.first,
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typeid(target_type).name());
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}
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});
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});
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}
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template<class parse>
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using tuple_type = typename parse::tuple_type;
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template<class parse>
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using tuple_size = std::tuple_size<tuple_type<parse>>;
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template<size_t i,
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class parse>
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using tuple_element = typename std::tuple_element<i, tuple_type<parse>>::type;
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template<class parse>
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constexpr auto &
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tuple(const parse &o)
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{
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return static_cast<const typename parse::tuple_type &>(o);
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}
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template<class parse>
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constexpr auto &
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tuple(parse &o)
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{
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return static_cast<typename parse::tuple_type &>(o);
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}
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template<class... T>
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constexpr auto
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size(const parse<T...> &t)
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{
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return t.size();
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}
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template<size_t i,
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class... T>
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constexpr auto &
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get(const parse<T...> &t)
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{
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return std::get<i>(t);
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}
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template<size_t i,
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class... T>
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constexpr auto &
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get(parse<T...> &t)
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{
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return std::get<i>(t);
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}
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template<size_t i,
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class parse>
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constexpr const char *
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reflect(const parse &t)
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{
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return t._member_(i);
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}
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template<size_t i,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i == tuple_size<parse>::value, void>::type
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for_each(const parse &t,
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typename std::enable_if<i == tuple_size<tuple>::value, void>::type
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for_each(const tuple &t,
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function&& f)
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{}
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template<size_t i,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i == tuple_size<parse>::value, void>::type
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for_each(parse &t,
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typename std::enable_if<i == tuple_size<tuple>::value, void>::type
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for_each(tuple &t,
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function&& f)
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{}
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template<size_t i = 0,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, void>::type
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for_each(const parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, void>::type
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for_each(const tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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f(reflect<i>(t), static_cast<const type &>(get<i>(t)));
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for_each<i + 1>(t, std::forward<function>(f));
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}
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template<size_t i = 0,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, void>::type
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for_each(parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, void>::type
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for_each(tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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f(reflect<i>(t), static_cast<type &>(get<i>(t)));
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for_each<i + 1>(t, std::forward<function>(f));
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i>
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constexpr
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typename std::enable_if<(i < 0), void>::type
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rfor_each(const parse &t,
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rfor_each(const tuple &t,
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function&& f)
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{}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i>
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constexpr
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typename std::enable_if<(i < 0), void>::type
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rfor_each(parse &t,
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rfor_each(tuple &t,
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function&& f)
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{}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i = tuple_size<parse>() - 1>
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ssize_t i = tuple_size<tuple>() - 1>
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constexpr
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typename std::enable_if<i < tuple_size<parse>(), void>::type
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rfor_each(const parse &t,
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typename std::enable_if<i < tuple_size<tuple>(), void>::type
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rfor_each(const tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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f(reflect<i>(t), static_cast<const type &>(get<i>(t)));
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rfor_each<parse, function, i - 1>(t, std::forward<function>(f));
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rfor_each<tuple, function, i - 1>(t, std::forward<function>(f));
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i = tuple_size<parse>() - 1>
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ssize_t i = tuple_size<tuple>() - 1>
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constexpr
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typename std::enable_if<i < tuple_size<parse>(), void>::type
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rfor_each(parse &t,
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typename std::enable_if<i < tuple_size<tuple>(), void>::type
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rfor_each(tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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f(reflect<i>(t), static_cast<type &>(get<i>(t)));
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rfor_each<parse, function, i - 1>(t, std::forward<function>(f));
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rfor_each<tuple, function, i - 1>(t, std::forward<function>(f));
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}
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template<size_t i,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i == tuple_size<parse>::value, bool>::type
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until(const parse &t,
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typename std::enable_if<i == tuple_size<tuple>::value, bool>::type
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until(const tuple &t,
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function&& f)
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{
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return true;
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}
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template<size_t i,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i == tuple_size<parse>::value, bool>::type
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until(parse &t,
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typename std::enable_if<i == tuple_size<tuple>::value, bool>::type
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until(tuple &t,
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function&& f)
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{
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return true;
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}
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template<size_t i = 0,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, bool>::type
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until(const parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, bool>::type
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until(const tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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const auto &value(static_cast<const type &>(get<i>(t)));
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return f(reflect<i>(t), value)?
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@ -268,14 +242,14 @@ until(const parse &t,
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}
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template<size_t i = 0,
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class parse,
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class tuple,
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class function>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, bool>::type
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until(parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, bool>::type
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until(tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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auto &value(static_cast<type &>(get<i>(t)));
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return f(reflect<i>(t), value)?
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@ -283,63 +257,63 @@ until(parse &t,
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false;
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i>
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constexpr
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typename std::enable_if<(i < 0), bool>::type
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runtil(const parse &t,
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runtil(const tuple &t,
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function&& f)
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{
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return true;
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i>
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constexpr
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typename std::enable_if<(i < 0), bool>::type
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runtil(parse &t,
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runtil(tuple &t,
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function&& f)
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{
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return true;
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i = tuple_size<parse>() - 1>
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ssize_t i = tuple_size<tuple>() - 1>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, bool>::type
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runtil(const parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, bool>::type
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runtil(const tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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const auto &value(static_cast<const type &>(get<i>(t)));
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return f(reflect<i>(t), value)?
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runtil<parse, function, i - 1>(t, std::forward<function>(f)):
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runtil<tuple, function, i - 1>(t, std::forward<function>(f)):
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false;
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}
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template<class parse,
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template<class tuple,
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class function,
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ssize_t i = tuple_size<parse>() - 1>
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ssize_t i = tuple_size<tuple>() - 1>
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constexpr
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typename std::enable_if<i < tuple_size<parse>::value, bool>::type
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runtil(parse &t,
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typename std::enable_if<i < tuple_size<tuple>::value, bool>::type
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runtil(tuple &t,
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function&& f)
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{
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using type = tuple_element<i, parse>;
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using type = tuple_element<i, tuple>;
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auto &value(static_cast<type &>(get<i>(t)));
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return f(reflect<i>(t), value)?
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runtil<parse, function, i - 1>(t, std::forward<function>(f)):
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runtil<tuple, function, i - 1>(t, std::forward<function>(f)):
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false;
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}
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template<class parse>
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template<class tuple>
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constexpr size_t
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indexof(parse&& t,
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indexof(tuple&& t,
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const string_view &name)
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{
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size_t ret(0);
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@ -353,13 +327,13 @@ indexof(parse&& t,
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return true;
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}));
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return !res? ret : throw std::out_of_range("parse has no member with that name");
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return !res? ret : throw std::out_of_range("tuple has no member with that name");
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}
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template<class parse,
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template<class tuple,
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class function>
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constexpr bool
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at(parse&& t,
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at(tuple&& t,
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const string_view &name,
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function&& f)
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{
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@ -374,9 +348,9 @@ at(parse&& t,
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});
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}
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template<class parse>
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template<class tuple>
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constexpr void
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keys(parse&& t,
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keys(tuple&& t,
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const std::function<void (string_view)> &f)
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{
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for_each(t, [&f]
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@ -386,10 +360,10 @@ keys(parse&& t,
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});
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}
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template<class parse,
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template<class tuple,
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class function>
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constexpr void
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values(parse&& t,
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values(tuple&& t,
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function&& f)
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{
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for_each(t, [&f]
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@ -399,5 +373,40 @@ values(parse&& t,
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});
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}
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template<class tuple>
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tuple &
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assign_tuple(tuple &ret,
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const json::object &object)
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{
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std::for_each(std::begin(object), std::end(object), [&ret](auto &&member)
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{
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at(ret, member.first, [&member](auto&& target)
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{
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using target_type = decltype(target);
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using cast_type = typename std::remove_reference<target_type>::type; try
|
||||
{
|
||||
target = lex_cast<cast_type>(member.second);
|
||||
}
|
||||
catch(const bad_lex_cast &e)
|
||||
{
|
||||
throw tuple_error("member \"%s\" must convert to '%s'",
|
||||
member.first,
|
||||
typeid(target_type).name());
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
template<class tuple>
|
||||
tuple
|
||||
make_tuple(const json::object &object)
|
||||
{
|
||||
tuple ret;
|
||||
assign_tuple(ret, object);
|
||||
return ret;
|
||||
}
|
||||
|
||||
} // namespace json
|
||||
} // namespace ircd
|
||||
|
|
@ -47,7 +47,7 @@ namespace ircd {
|
|||
namespace m {
|
||||
|
||||
struct event
|
||||
:json::parse
|
||||
:json::tuple
|
||||
<
|
||||
string_view,
|
||||
time_t,
|
||||
|
|
@ -68,8 +68,8 @@ struct event
|
|||
)
|
||||
|
||||
template<class... A>
|
||||
event(A&&... a)
|
||||
:parse{*this, std::forward<A>(a)...}
|
||||
explicit event(const json::object &obj)
|
||||
:tuple{json::make_tuple<decltype(*this)>(obj)}
|
||||
{}
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue