Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Improve code generation #83

Merged
merged 3 commits into from
Apr 14, 2024
Merged

Improve code generation #83

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
346fb74
Improve code generation
mingxwa Apr 11, 2024
833d90c
Add missing header
mingxwa Apr 11, 2024
b77f652
Resolve build error
mingxwa Apr 11, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
82 changes: 56 additions & 26 deletions proxy.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#ifndef _MSFT_PROXY_
#define _MSFT_PROXY_

#include <cstring>
#include <bit>
#include <concepts>
#include <initializer_list>
Expand Down Expand Up @@ -164,14 +165,41 @@ R invoke_dispatch(Args&&... args) {
return F{}(std::forward<Args>(args)...);
}
}
template <class F, bool NE, class R, class... Args>
R dispatcher_default_impl(const char*, Args... args) noexcept(NE)
{ return invoke_dispatch<F, R>(std::forward<Args>(args)...); }
template <class P, class F, bool NE, class R, class... Args>
R dispatcher_impl(const char* erased, Args... args) noexcept(NE) {
template <class P, class F, class R, class... Args>
R invocation_dispatcher(const char* self, Args... args)
noexcept(is_invoker_well_formed<
F, typename ptr_traits<P>::target_type, true, R, Args...>()) {
return invoke_dispatch<F, R>(ptr_traits<P>::dereference(*std::launder(
reinterpret_cast<const P*>(erased))), std::forward<Args>(args)...);
reinterpret_cast<const P*>(self))), std::forward<Args>(args)...);
}
template <class F, class R, class... Args>
R invocation_default_dispatcher(const char*, Args... args)
noexcept(is_invoker_well_formed<F, void, true, R, Args...>())
{ return invoke_dispatch<F, R>(std::forward<Args>(args)...); }
template <class P>
void copying_dispatcher(char* self, const char* rhs)
noexcept(has_copyability<P>(constraint_level::nothrow)) {
std::construct_at(reinterpret_cast<P*>(self),
*std::launder(reinterpret_cast<const P*>(rhs)));
}
template <std::size_t Len, std::size_t Align>
void copying_default_dispatcher(char* self, const char* rhs) noexcept {
std::memcpy(std::assume_aligned<Align>(self),
std::assume_aligned<Align>(rhs), Len);
}
template <class P>
void relocation_dispatcher(char* self, const char* rhs)
noexcept(has_relocatability<P>(constraint_level::nothrow)) {
P* other = std::launder(reinterpret_cast<P*>(const_cast<char*>(rhs)));
std::construct_at(reinterpret_cast<P*>(self), std::move(*other));
std::destroy_at(other);
}
template <class P>
void destruction_dispatcher(char* self)
noexcept(has_destructibility<P>(constraint_level::nothrow))
{ std::destroy_at(std::launder(reinterpret_cast<P*>(self))); }
inline void destruction_default_dispatcher(char*) noexcept {}

template <bool NE, class R, class... Args>
struct overload_traits_impl : applicable_traits {
template <class D>
Expand All @@ -180,11 +208,11 @@ struct overload_traits_impl : applicable_traits {
static constexpr func_ptr_t<NE, R, const char*, Args...> get() {
if constexpr (invocable_dispatch<
D, typename ptr_traits<P>::target_type, NE, R, Args...>) {
return &dispatcher_impl<P, typename D::template invoker<
typename ptr_traits<P>::target_type>, NE, R, Args...>;
return &invocation_dispatcher<P, typename D::template invoker<
typename ptr_traits<P>::target_type>, R, Args...>;
} else {
return &dispatcher_default_impl<
typename D::template invoker<void>, NE, R, Args...>;
return &invocation_default_dispatcher<
typename D::template invoker<void>, R, Args...>;
}
}
};
Expand Down Expand Up @@ -271,29 +299,33 @@ template <bool NE>
struct copyability_meta_provider {
template <class P>
static constexpr func_ptr_t<NE, void, char*, const char*> get() {
return [](char* self, const char* rhs) noexcept(NE) {
std::construct_at(reinterpret_cast<P*>(self),
*std::launder(reinterpret_cast<const P*>(rhs)));
};
if constexpr (has_copyability<P>(constraint_level::trivial)) {
return &copying_default_dispatcher<sizeof(P), alignof(P)>;
} else {
return &copying_dispatcher<P>;
}
}
};
template <bool NE>
struct relocatability_meta_provider {
template <class P>
static constexpr func_ptr_t<NE, void, char*, char*> get() {
return [](char* self, char* rhs) noexcept(NE) {
P* other = std::launder(reinterpret_cast<P*>(rhs));
std::construct_at(reinterpret_cast<P*>(self), std::move(*other));
std::destroy_at(other);
};
static constexpr func_ptr_t<NE, void, char*, const char*> get() {
if constexpr (has_relocatability<P>(constraint_level::trivial)) {
return &copying_default_dispatcher<sizeof(P), alignof(P)>;
} else {
return &relocation_dispatcher<P>;
}
}
};
template <bool NE>
struct destructibility_meta_provider {
template <class P>
static constexpr func_ptr_t<NE, void, char*> get() {
return [](char* self) noexcept(NE)
{ std::destroy_at(std::launder(reinterpret_cast<P*>(self))); };
if constexpr (has_destructibility<P>(constraint_level::trivial)) {
return &destruction_default_dispatcher;
} else {
return &destruction_dispatcher<P>;
}
}
};
template <template <bool> class MP, constraint_level C>
Expand Down Expand Up @@ -822,9 +854,8 @@ struct facade_prototype {
#define ___PRO_DEF_DISPATCH_IMPL(__NAME, __EXPR, __DEFEXPR, __OVERLOADS) \
struct __NAME { \
private: \
template <class __T> \
struct __FT { \
template <class... __Args> \
template <class __T, class... __Args> \
decltype(auto) operator()(__T& __self, __Args&&... __args) \
noexcept(noexcept(__EXPR)) requires(requires { __EXPR; }) \
{ return __EXPR; } \
Expand All @@ -839,8 +870,7 @@ struct facade_prototype {
public: \
using overload_types = __OVERLOADS; \
template <class __T> \
using invoker = std::conditional_t< \
std::is_void_v<__T>, __FV, __FT<__T>>; \
using invoker = std::conditional_t<std::is_void_v<__T>, __FV, __FT>; \
}
#define PRO_DEF_MEMBER_DISPATCH_WITH_DEFAULT(__NAME, __FUNC, __DEFFUNC, ...) \
___PRO_DEF_DISPATCH_IMPL(__NAME, \
Expand Down
Loading