diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/functional/internal')
| -rw-r--r-- | third_party/abseil_cpp/absl/functional/internal/front_binder.h | 95 | ||||
| -rw-r--r-- | third_party/abseil_cpp/absl/functional/internal/function_ref.h | 106 |
2 files changed, 0 insertions, 201 deletions
diff --git a/third_party/abseil_cpp/absl/functional/internal/front_binder.h b/third_party/abseil_cpp/absl/functional/internal/front_binder.h deleted file mode 100644 index a4d95da44a..0000000000 --- a/third_party/abseil_cpp/absl/functional/internal/front_binder.h +++ /dev/null @@ -1,95 +0,0 @@ -// Copyright 2018 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Implementation details for `absl::bind_front()`. - -#ifndef ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_ -#define ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_ - -#include <cstddef> -#include <type_traits> -#include <utility> - -#include "absl/base/internal/invoke.h" -#include "absl/container/internal/compressed_tuple.h" -#include "absl/meta/type_traits.h" -#include "absl/utility/utility.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace functional_internal { - -// Invoke the method, expanding the tuple of bound arguments. -template <class R, class Tuple, size_t... Idx, class... Args> -R Apply(Tuple&& bound, absl::index_sequence<Idx...>, Args&&... free) { - return base_internal::Invoke( - absl::forward<Tuple>(bound).template get<Idx>()..., - absl::forward<Args>(free)...); -} - -template <class F, class... BoundArgs> -class FrontBinder { - using BoundArgsT = absl::container_internal::CompressedTuple<F, BoundArgs...>; - using Idx = absl::make_index_sequence<sizeof...(BoundArgs) + 1>; - - BoundArgsT bound_args_; - - public: - template <class... Ts> - constexpr explicit FrontBinder(absl::in_place_t, Ts&&... ts) - : bound_args_(absl::forward<Ts>(ts)...) {} - - template <class... FreeArgs, - class R = base_internal::InvokeT<F&, BoundArgs&..., FreeArgs&&...>> - R operator()(FreeArgs&&... free_args) & { - return functional_internal::Apply<R>(bound_args_, Idx(), - absl::forward<FreeArgs>(free_args)...); - } - - template <class... FreeArgs, - class R = base_internal::InvokeT<const F&, const BoundArgs&..., - FreeArgs&&...>> - R operator()(FreeArgs&&... free_args) const& { - return functional_internal::Apply<R>(bound_args_, Idx(), - absl::forward<FreeArgs>(free_args)...); - } - - template <class... FreeArgs, class R = base_internal::InvokeT< - F&&, BoundArgs&&..., FreeArgs&&...>> - R operator()(FreeArgs&&... free_args) && { - // This overload is called when *this is an rvalue. If some of the bound - // arguments are stored by value or rvalue reference, we move them. - return functional_internal::Apply<R>(absl::move(bound_args_), Idx(), - absl::forward<FreeArgs>(free_args)...); - } - - template <class... FreeArgs, - class R = base_internal::InvokeT<const F&&, const BoundArgs&&..., - FreeArgs&&...>> - R operator()(FreeArgs&&... free_args) const&& { - // This overload is called when *this is an rvalue. If some of the bound - // arguments are stored by value or rvalue reference, we move them. - return functional_internal::Apply<R>(absl::move(bound_args_), Idx(), - absl::forward<FreeArgs>(free_args)...); - } -}; - -template <class F, class... BoundArgs> -using bind_front_t = FrontBinder<decay_t<F>, absl::decay_t<BoundArgs>...>; - -} // namespace functional_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_ diff --git a/third_party/abseil_cpp/absl/functional/internal/function_ref.h b/third_party/abseil_cpp/absl/functional/internal/function_ref.h deleted file mode 100644 index d1575054ea..0000000000 --- a/third_party/abseil_cpp/absl/functional/internal/function_ref.h +++ /dev/null @@ -1,106 +0,0 @@ -// Copyright 2019 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef ABSL_FUNCTIONAL_INTERNAL_FUNCTION_REF_H_ -#define ABSL_FUNCTIONAL_INTERNAL_FUNCTION_REF_H_ - -#include <cassert> -#include <functional> -#include <type_traits> - -#include "absl/base/internal/invoke.h" -#include "absl/meta/type_traits.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace functional_internal { - -// Like a void* that can handle function pointers as well. The standard does not -// allow function pointers to round-trip through void*, but void(*)() is fine. -// -// Note: It's important that this class remains trivial and is the same size as -// a pointer, since this allows the compiler to perform tail-call optimizations -// when the underlying function is a callable object with a matching signature. -union VoidPtr { - const void* obj; - void (*fun)(); -}; - -// Chooses the best type for passing T as an argument. -// Attempt to be close to SystemV AMD64 ABI. Objects with trivial copy ctor are -// passed by value. -template <typename T> -constexpr bool PassByValue() { - return !std::is_lvalue_reference<T>::value && - absl::is_trivially_copy_constructible<T>::value && - absl::is_trivially_copy_assignable< - typename std::remove_cv<T>::type>::value && - std::is_trivially_destructible<T>::value && - sizeof(T) <= 2 * sizeof(void*); -} - -template <typename T> -struct ForwardT : std::conditional<PassByValue<T>(), T, T&&> {}; - -// An Invoker takes a pointer to the type-erased invokable object, followed by -// the arguments that the invokable object expects. -// -// Note: The order of arguments here is an optimization, since member functions -// have an implicit "this" pointer as their first argument, putting VoidPtr -// first allows the compiler to perform tail-call optimization in many cases. -template <typename R, typename... Args> -using Invoker = R (*)(VoidPtr, typename ForwardT<Args>::type...); - -// -// InvokeObject and InvokeFunction provide static "Invoke" functions that can be -// used as Invokers for objects or functions respectively. -// -// static_cast<R> handles the case the return type is void. -template <typename Obj, typename R, typename... Args> -R InvokeObject(VoidPtr ptr, typename ForwardT<Args>::type... args) { - auto o = static_cast<const Obj*>(ptr.obj); - return static_cast<R>( - absl::base_internal::Invoke(*o, std::forward<Args>(args)...)); -} - -template <typename Fun, typename R, typename... Args> -R InvokeFunction(VoidPtr ptr, typename ForwardT<Args>::type... args) { - auto f = reinterpret_cast<Fun>(ptr.fun); - return static_cast<R>( - absl::base_internal::Invoke(f, std::forward<Args>(args)...)); -} - -template <typename Sig> -void AssertNonNull(const std::function<Sig>& f) { - assert(f != nullptr); - (void)f; -} - -template <typename F> -void AssertNonNull(const F&) {} - -template <typename F, typename C> -void AssertNonNull(F C::*f) { - assert(f != nullptr); - (void)f; -} - -template <bool C> -using EnableIf = typename ::std::enable_if<C, int>::type; - -} // namespace functional_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_FUNCTIONAL_INTERNAL_FUNCTION_REF_H_ |