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https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
fix typo variant.hpp
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bolero-MURAKAMI
parent
aa91f8ce29
commit
787c819b77
4 changed files with 236 additions and 5 deletions
22
sprout/breed/detail/as_lvalue.hpp
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22
sprout/breed/detail/as_lvalue.hpp
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@ -0,0 +1,22 @@
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#ifndef SPROUT_BREED_DETAIL_AS_LVALUE_HPP
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#define SPROUT_BREED_DETAIL_AS_LVALUE_HPP
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#include <sprout/config.hpp>
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#include <sprout/breed/breed_fwd.hpp>
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namespace sprout {
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namespace breed {
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namespace detail {
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template<typename T>
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SPROUT_CONSTEXPR T& as_lvalue(T& t) {
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return t;
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}
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template<typename T>
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SPROUT_CONSTEXPR T const& as_lvalue(T const& t) {
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return t;
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}
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} // namespace detail
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} // namespace breed
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} // namespace sprout
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#endif // #ifndef SPROUT_BREED_DETAIL_AS_LVALUE_HPP
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207
sprout/breed/detail/poly_function.hpp
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207
sprout/breed/detail/poly_function.hpp
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@ -0,0 +1,207 @@
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#ifndef SPROUT_BREED_DETAIL_POLY_FUNCTION_HPP
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#define SPROUT_BREED_DETAIL_POLY_FUNCTION_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/breed/breed_fwd.hpp>
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namespace sprout {
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namespace breed {
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namespace detail {
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template<typename T>
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struct normalize_arg {
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public:
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typedef T type;
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typedef T const& reference;
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};
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template<typename T>
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struct normalize_arg<T&> {
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public:
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typedef T type;
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typedef T const& reference;
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};
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template<typename T>
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struct normalize_arg<T const&> {
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public:
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typedef T type;
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typedef T const& reference;
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};
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template<typename T>
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struct arg {
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public:
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typedef T const& type;
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private:
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type value;
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public:
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SPROUT_CONSTEXPR arg(type t)
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: value(t)
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{}
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SPROUT_CONSTEXPR operator type() const {
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return this->value;
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}
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SPROUT_CONSTEXPR type operator()() const {
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return *this;
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}
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private:
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arg& operator=(arg const&) = delete;
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};
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template<typename T>
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struct arg<T&> {
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public:
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typedef T& type;
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private:
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type value;
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public:
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SPROUT_CONSTEXPR arg(type t)
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: value(t)
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{}
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SPROUT_CONSTEXPR operator type() const {
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return this->value;
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}
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SPROUT_CONSTEXPR type operator()() const {
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return *this;
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}
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private:
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arg& operator=(arg const&) = delete;
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};
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template<typename T, typename Void = void>
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struct is_poly_function
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: public std::false_type
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{};
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template<typename T>
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struct is_poly_function<T, typename T::is_poly_function_base_>
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: public std::true_type
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{};
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# define SPROUT_BREED_POLY_FUNCTION() \
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typedef void is_poly_function_base_;
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struct poly_function_base {
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public:
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SPROUT_BREED_POLY_FUNCTION();
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};
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template<typename Derived, typename NullaryResult = void>
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struct poly_function
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: public psprout::breed::detail::poly_function_base
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{
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public:
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template<typename Sig>
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struct result;
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template<typename This>
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struct result<This()>
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: public Derived::template impl<>
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{
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public:
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typedef typename result::result_type type;
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};
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template<typename This, typename... Args>
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struct result<This(Args...)>
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: public Derived::template impl<
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typename normalize_arg<Args>::type...
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>
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{
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public:
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typedef typename result::result_type type;
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};
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public:
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SPROUT_CONSTEXPR NullaryResult operator()() const {
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return result<Derived const()>().operator()();
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}
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template<typename... Args>
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SPROUT_CONSTEXPR typename result<Derived const(Args const&...)>::type
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operator()(Args const&... args) const {
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return result<Derived const(Args const&...)>().operator()(
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static_cast<typename normalize_arg<Args const&>::reference>(args)...
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);
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}
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};
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template<typename T>
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struct wrap_t;
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typedef char poly_function_t;
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typedef char (&mono_function_t)[2];
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typedef char (&unknown_function_t)[3];
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template<typename T> sprout::breed::detail::poly_function_t test_poly_function(
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T const*,
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sprout::breed::detail::wrap_t<typename T::is_poly_function_base_> const* = 0
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);
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template<typename T> sprout::breed::detail::mono_function_t test_poly_function(
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T const*,
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sprout::breed::detail::wrap_t<typename T::result_type> const* = 0
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);
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template<typename T> sprout::breed::detail::unknown_function_t test_poly_function(
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T const*,
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...
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);
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template<
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typename Fun,
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typename Sig,
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typename Switch = std::integral_constant<
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std::size_t,
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sizeof(sprout::breed::detail::test_poly_function<Fun>(0, 0))
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>
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>
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struct poly_function_traits {
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public:
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typedef typename Fun::template result<Sig>::type result_type;
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typedef Fun function_type;
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};
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template<typename Fun, typename Sig>
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struct poly_function_traits<
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Fun,
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Sig,
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std::integral_constant<
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std::size_t,
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sizeof(sprout::breed::detail::mono_function_t)
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>
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> {
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public:
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typedef typename Fun::result_type result_type;
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typedef Fun function_type;
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};
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template<typename PolyFun, typename... Args>
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struct poly_function_traits<
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PolyFun,
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PolyFun(
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Args...,
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std::integral_constant<std::size_t, sizeof(sprout::breed::detail::poly_function_t)
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)
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> {
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public:
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typedef typename PolyFun::template impl<Args...> function_type;
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typedef typename function_type::result_type result_type;
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};
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template<typename PolyFunSig, bool IsPolyFunction>
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struct as_mono_function_impl;
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template<typename PolyFun, typename... Args>
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struct as_mono_function_impl<PolyFun(Args...), true> {
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public:
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typedef typename PolyFun::template impl<Args const...> type;
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};
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template<typename PolyFun, typename... Args>
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struct as_mono_function_impl<PolyFun(Args...), false> {
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public:
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typedef PolyFun type;
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};
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template<typename PolyFunSig>
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struct as_mono_function;
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template<typename PolyFun, typename... Args>
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struct as_mono_function<PolyFun(Args...)>
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: public sprout::breed::detail::as_mono_function_impl<
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PolyFun(Args...),
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sprout::breed::detail::is_poly_function<PolyFun>::value
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>
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{};
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} // namespace detail
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} // namespace breed
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} // namespace sprout
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#endif // #ifndef SPROUT_BREED_DETAIL_POLY_FUNCTION_HPP
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@ -10,6 +10,8 @@
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namespace sprout {
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namespace breed {
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namespace detail {
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} // namespace detail
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} // namespace breed
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} // namespace sprout
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@ -18,8 +18,8 @@ namespace sprout {
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template<typename... Types>
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class variant_impl {
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protected:
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typedef sprout::tuples::tuple<Types...> tuple_type;;
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typedef sprout::types::type_tuple<typename std::decay<Types>::type...> uncvref_tuple_type;;
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typedef sprout::tuples::tuple<Types...> tuple_type;
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typedef sprout::types::type_tuple<typename std::decay<Types>::type...> uncvref_tuple_type;
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private:
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template<typename T, sprout::index_t... Indexes>
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static SPROUT_CONSTEXPR tuple_type init(T&& operand, sprout::index_tuple<Indexes...>) {
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@ -62,10 +62,10 @@ namespace sprout {
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: private sprout::detail::variant_impl<Types...>
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{
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private:
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typedef sprout::detail::variant_impl<Types...> impl_type;;
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typedef typename impl_type::uncvref_tuple_type uncvref_tuple_type;;
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typedef sprout::detail::variant_impl<Types...> impl_type;
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typedef typename impl_type::uncvref_tuple_type uncvref_tuple_type;
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public:
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typedef typename impl_type::tuple_type tuple_type;;
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typedef typename impl_type::tuple_type tuple_type;
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private:
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template<int I>
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static SPROUT_CONSTEXPR typename std::enable_if<
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