diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/utility')
| -rw-r--r-- | third_party/abseil_cpp/absl/utility/BUILD.bazel | 55 | ||||
| -rw-r--r-- | third_party/abseil_cpp/absl/utility/CMakeLists.txt | 44 | ||||
| -rw-r--r-- | third_party/abseil_cpp/absl/utility/utility.h | 350 | ||||
| -rw-r--r-- | third_party/abseil_cpp/absl/utility/utility_test.cc | 376 |
4 files changed, 0 insertions, 825 deletions
diff --git a/third_party/abseil_cpp/absl/utility/BUILD.bazel b/third_party/abseil_cpp/absl/utility/BUILD.bazel deleted file mode 100644 index 02b2c407f847..000000000000 --- a/third_party/abseil_cpp/absl/utility/BUILD.bazel +++ /dev/null @@ -1,55 +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. -# - -load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test") -load( - "//absl:copts/configure_copts.bzl", - "ABSL_DEFAULT_COPTS", - "ABSL_DEFAULT_LINKOPTS", - "ABSL_TEST_COPTS", -) - -package(default_visibility = ["//visibility:public"]) - -licenses(["notice"]) - -cc_library( - name = "utility", - hdrs = [ - "utility.h", - ], - copts = ABSL_DEFAULT_COPTS, - linkopts = ABSL_DEFAULT_LINKOPTS, - deps = [ - "//absl/base:base_internal", - "//absl/base:config", - "//absl/meta:type_traits", - ], -) - -cc_test( - name = "utility_test", - srcs = ["utility_test.cc"], - copts = ABSL_TEST_COPTS, - linkopts = ABSL_DEFAULT_LINKOPTS, - deps = [ - ":utility", - "//absl/base:core_headers", - "//absl/memory", - "//absl/strings", - "@com_google_googletest//:gtest_main", - ], -) diff --git a/third_party/abseil_cpp/absl/utility/CMakeLists.txt b/third_party/abseil_cpp/absl/utility/CMakeLists.txt deleted file mode 100644 index e1edd19aa013..000000000000 --- a/third_party/abseil_cpp/absl/utility/CMakeLists.txt +++ /dev/null @@ -1,44 +0,0 @@ -# -# Copyright 2017 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. -# - -absl_cc_library( - NAME - utility - HDRS - "utility.h" - COPTS - ${ABSL_DEFAULT_COPTS} - DEPS - absl::base_internal - absl::config - absl::type_traits - PUBLIC -) - -absl_cc_test( - NAME - utility_test - SRCS - "utility_test.cc" - COPTS - ${ABSL_TEST_COPTS} - DEPS - absl::utility - absl::core_headers - absl::memory - absl::strings - gmock_main -) diff --git a/third_party/abseil_cpp/absl/utility/utility.h b/third_party/abseil_cpp/absl/utility/utility.h deleted file mode 100644 index bf9232209a9b..000000000000 --- a/third_party/abseil_cpp/absl/utility/utility.h +++ /dev/null @@ -1,350 +0,0 @@ -// Copyright 2017 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. -// -// This header file contains C++11 versions of standard <utility> header -// abstractions available within C++14 and C++17, and are designed to be drop-in -// replacement for code compliant with C++14 and C++17. -// -// The following abstractions are defined: -// -// * integer_sequence<T, Ints...> == std::integer_sequence<T, Ints...> -// * index_sequence<Ints...> == std::index_sequence<Ints...> -// * make_integer_sequence<T, N> == std::make_integer_sequence<T, N> -// * make_index_sequence<N> == std::make_index_sequence<N> -// * index_sequence_for<Ts...> == std::index_sequence_for<Ts...> -// * apply<Functor, Tuple> == std::apply<Functor, Tuple> -// * exchange<T> == std::exchange<T> -// * make_from_tuple<T> == std::make_from_tuple<T> -// -// This header file also provides the tag types `in_place_t`, `in_place_type_t`, -// and `in_place_index_t`, as well as the constant `in_place`, and -// `constexpr` `std::move()` and `std::forward()` implementations in C++11. -// -// References: -// -// https://en.cppreference.com/w/cpp/utility/integer_sequence -// https://en.cppreference.com/w/cpp/utility/apply -// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3658.html - -#ifndef ABSL_UTILITY_UTILITY_H_ -#define ABSL_UTILITY_UTILITY_H_ - -#include <cstddef> -#include <cstdlib> -#include <tuple> -#include <utility> - -#include "absl/base/config.h" -#include "absl/base/internal/inline_variable.h" -#include "absl/base/internal/invoke.h" -#include "absl/meta/type_traits.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN - -// integer_sequence -// -// Class template representing a compile-time integer sequence. An instantiation -// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its -// type through its template arguments (which is a common need when -// working with C++11 variadic templates). `absl::integer_sequence` is designed -// to be a drop-in replacement for C++14's `std::integer_sequence`. -// -// Example: -// -// template< class T, T... Ints > -// void user_function(integer_sequence<T, Ints...>); -// -// int main() -// { -// // user_function's `T` will be deduced to `int` and `Ints...` -// // will be deduced to `0, 1, 2, 3, 4`. -// user_function(make_integer_sequence<int, 5>()); -// } -template <typename T, T... Ints> -struct integer_sequence { - using value_type = T; - static constexpr size_t size() noexcept { return sizeof...(Ints); } -}; - -// index_sequence -// -// A helper template for an `integer_sequence` of `size_t`, -// `absl::index_sequence` is designed to be a drop-in replacement for C++14's -// `std::index_sequence`. -template <size_t... Ints> -using index_sequence = integer_sequence<size_t, Ints...>; - -namespace utility_internal { - -template <typename Seq, size_t SeqSize, size_t Rem> -struct Extend; - -// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency. -template <typename T, T... Ints, size_t SeqSize> -struct Extend<integer_sequence<T, Ints...>, SeqSize, 0> { - using type = integer_sequence<T, Ints..., (Ints + SeqSize)...>; -}; - -template <typename T, T... Ints, size_t SeqSize> -struct Extend<integer_sequence<T, Ints...>, SeqSize, 1> { - using type = integer_sequence<T, Ints..., (Ints + SeqSize)..., 2 * SeqSize>; -}; - -// Recursion helper for 'make_integer_sequence<T, N>'. -// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'. -template <typename T, size_t N> -struct Gen { - using type = - typename Extend<typename Gen<T, N / 2>::type, N / 2, N % 2>::type; -}; - -template <typename T> -struct Gen<T, 0> { - using type = integer_sequence<T>; -}; - -template <typename T> -struct InPlaceTypeTag { - explicit InPlaceTypeTag() = delete; - InPlaceTypeTag(const InPlaceTypeTag&) = delete; - InPlaceTypeTag& operator=(const InPlaceTypeTag&) = delete; -}; - -template <size_t I> -struct InPlaceIndexTag { - explicit InPlaceIndexTag() = delete; - InPlaceIndexTag(const InPlaceIndexTag&) = delete; - InPlaceIndexTag& operator=(const InPlaceIndexTag&) = delete; -}; - -} // namespace utility_internal - -// Compile-time sequences of integers - -// make_integer_sequence -// -// This template alias is equivalent to -// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in -// replacement for C++14's `std::make_integer_sequence`. -template <typename T, T N> -using make_integer_sequence = typename utility_internal::Gen<T, N>::type; - -// make_index_sequence -// -// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`, -// and is designed to be a drop-in replacement for C++14's -// `std::make_index_sequence`. -template <size_t N> -using make_index_sequence = make_integer_sequence<size_t, N>; - -// index_sequence_for -// -// Converts a typename pack into an index sequence of the same length, and -// is designed to be a drop-in replacement for C++14's -// `std::index_sequence_for()` -template <typename... Ts> -using index_sequence_for = make_index_sequence<sizeof...(Ts)>; - -// Tag types - -#ifdef ABSL_USES_STD_OPTIONAL - -using std::in_place_t; -using std::in_place; - -#else // ABSL_USES_STD_OPTIONAL - -// in_place_t -// -// Tag type used to specify in-place construction, such as with -// `absl::optional`, designed to be a drop-in replacement for C++17's -// `std::in_place_t`. -struct in_place_t {}; - -ABSL_INTERNAL_INLINE_CONSTEXPR(in_place_t, in_place, {}); - -#endif // ABSL_USES_STD_OPTIONAL - -#if defined(ABSL_USES_STD_ANY) || defined(ABSL_USES_STD_VARIANT) -using std::in_place_type; -using std::in_place_type_t; -#else - -// in_place_type_t -// -// Tag type used for in-place construction when the type to construct needs to -// be specified, such as with `absl::any`, designed to be a drop-in replacement -// for C++17's `std::in_place_type_t`. -template <typename T> -using in_place_type_t = void (*)(utility_internal::InPlaceTypeTag<T>); - -template <typename T> -void in_place_type(utility_internal::InPlaceTypeTag<T>) {} -#endif // ABSL_USES_STD_ANY || ABSL_USES_STD_VARIANT - -#ifdef ABSL_USES_STD_VARIANT -using std::in_place_index; -using std::in_place_index_t; -#else - -// in_place_index_t -// -// Tag type used for in-place construction when the type to construct needs to -// be specified, such as with `absl::any`, designed to be a drop-in replacement -// for C++17's `std::in_place_index_t`. -template <size_t I> -using in_place_index_t = void (*)(utility_internal::InPlaceIndexTag<I>); - -template <size_t I> -void in_place_index(utility_internal::InPlaceIndexTag<I>) {} -#endif // ABSL_USES_STD_VARIANT - -// Constexpr move and forward - -// move() -// -// A constexpr version of `std::move()`, designed to be a drop-in replacement -// for C++14's `std::move()`. -template <typename T> -constexpr absl::remove_reference_t<T>&& move(T&& t) noexcept { - return static_cast<absl::remove_reference_t<T>&&>(t); -} - -// forward() -// -// A constexpr version of `std::forward()`, designed to be a drop-in replacement -// for C++14's `std::forward()`. -template <typename T> -constexpr T&& forward( - absl::remove_reference_t<T>& t) noexcept { // NOLINT(runtime/references) - return static_cast<T&&>(t); -} - -namespace utility_internal { -// Helper method for expanding tuple into a called method. -template <typename Functor, typename Tuple, std::size_t... Indexes> -auto apply_helper(Functor&& functor, Tuple&& t, index_sequence<Indexes...>) - -> decltype(absl::base_internal::invoke( - absl::forward<Functor>(functor), - std::get<Indexes>(absl::forward<Tuple>(t))...)) { - return absl::base_internal::invoke( - absl::forward<Functor>(functor), - std::get<Indexes>(absl::forward<Tuple>(t))...); -} - -} // namespace utility_internal - -// apply -// -// Invokes a Callable using elements of a tuple as its arguments. -// Each element of the tuple corresponds to an argument of the call (in order). -// Both the Callable argument and the tuple argument are perfect-forwarded. -// For member-function Callables, the first tuple element acts as the `this` -// pointer. `absl::apply` is designed to be a drop-in replacement for C++17's -// `std::apply`. Unlike C++17's `std::apply`, this is not currently `constexpr`. -// -// Example: -// -// class Foo { -// public: -// void Bar(int); -// }; -// void user_function1(int, std::string); -// void user_function2(std::unique_ptr<Foo>); -// auto user_lambda = [](int, int) {}; -// -// int main() -// { -// std::tuple<int, std::string> tuple1(42, "bar"); -// // Invokes the first user function on int, std::string. -// absl::apply(&user_function1, tuple1); -// -// std::tuple<std::unique_ptr<Foo>> tuple2(absl::make_unique<Foo>()); -// // Invokes the user function that takes ownership of the unique -// // pointer. -// absl::apply(&user_function2, std::move(tuple2)); -// -// auto foo = absl::make_unique<Foo>(); -// std::tuple<Foo*, int> tuple3(foo.get(), 42); -// // Invokes the method Bar on foo with one argument, 42. -// absl::apply(&Foo::Bar, tuple3); -// -// std::tuple<int, int> tuple4(8, 9); -// // Invokes a lambda. -// absl::apply(user_lambda, tuple4); -// } -template <typename Functor, typename Tuple> -auto apply(Functor&& functor, Tuple&& t) - -> decltype(utility_internal::apply_helper( - absl::forward<Functor>(functor), absl::forward<Tuple>(t), - absl::make_index_sequence<std::tuple_size< - typename std::remove_reference<Tuple>::type>::value>{})) { - return utility_internal::apply_helper( - absl::forward<Functor>(functor), absl::forward<Tuple>(t), - absl::make_index_sequence<std::tuple_size< - typename std::remove_reference<Tuple>::type>::value>{}); -} - -// exchange -// -// Replaces the value of `obj` with `new_value` and returns the old value of -// `obj`. `absl::exchange` is designed to be a drop-in replacement for C++14's -// `std::exchange`. -// -// Example: -// -// Foo& operator=(Foo&& other) { -// ptr1_ = absl::exchange(other.ptr1_, nullptr); -// int1_ = absl::exchange(other.int1_, -1); -// return *this; -// } -template <typename T, typename U = T> -T exchange(T& obj, U&& new_value) { - T old_value = absl::move(obj); - obj = absl::forward<U>(new_value); - return old_value; -} - -namespace utility_internal { -template <typename T, typename Tuple, size_t... I> -T make_from_tuple_impl(Tuple&& tup, absl::index_sequence<I...>) { - return T(std::get<I>(std::forward<Tuple>(tup))...); -} -} // namespace utility_internal - -// make_from_tuple -// -// Given the template parameter type `T` and a tuple of arguments -// `std::tuple(arg0, arg1, ..., argN)` constructs an object of type `T` as if by -// calling `T(arg0, arg1, ..., argN)`. -// -// Example: -// -// std::tuple<const char*, size_t> args("hello world", 5); -// auto s = absl::make_from_tuple<std::string>(args); -// assert(s == "hello"); -// -template <typename T, typename Tuple> -constexpr T make_from_tuple(Tuple&& tup) { - return utility_internal::make_from_tuple_impl<T>( - std::forward<Tuple>(tup), - absl::make_index_sequence< - std::tuple_size<absl::decay_t<Tuple>>::value>{}); -} - -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_UTILITY_UTILITY_H_ diff --git a/third_party/abseil_cpp/absl/utility/utility_test.cc b/third_party/abseil_cpp/absl/utility/utility_test.cc deleted file mode 100644 index f044ad644a4d..000000000000 --- a/third_party/abseil_cpp/absl/utility/utility_test.cc +++ /dev/null @@ -1,376 +0,0 @@ -// Copyright 2017 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. - -#include "absl/utility/utility.h" - -#include <sstream> -#include <string> -#include <tuple> -#include <type_traits> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/base/attributes.h" -#include "absl/memory/memory.h" -#include "absl/strings/str_cat.h" - -namespace { - -#ifdef _MSC_VER -// Warnings for unused variables in this test are false positives. On other -// platforms, they are suppressed by ABSL_ATTRIBUTE_UNUSED, but that doesn't -// work on MSVC. -// Both the unused variables and the name length warnings are due to calls -// to absl::make_index_sequence with very large values, creating very long type -// names. The resulting warnings are so long they make build output unreadable. -#pragma warning( push ) -#pragma warning( disable : 4503 ) // decorated name length exceeded -#pragma warning( disable : 4101 ) // unreferenced local variable -#endif // _MSC_VER - -using ::testing::ElementsAre; -using ::testing::Pointee; -using ::testing::StaticAssertTypeEq; - -TEST(IntegerSequenceTest, ValueType) { - StaticAssertTypeEq<int, absl::integer_sequence<int>::value_type>(); - StaticAssertTypeEq<char, absl::integer_sequence<char>::value_type>(); -} - -TEST(IntegerSequenceTest, Size) { - EXPECT_EQ(0, (absl::integer_sequence<int>::size())); - EXPECT_EQ(1, (absl::integer_sequence<int, 0>::size())); - EXPECT_EQ(1, (absl::integer_sequence<int, 1>::size())); - EXPECT_EQ(2, (absl::integer_sequence<int, 1, 2>::size())); - EXPECT_EQ(3, (absl::integer_sequence<int, 0, 1, 2>::size())); - EXPECT_EQ(3, (absl::integer_sequence<int, -123, 123, 456>::size())); - constexpr size_t sz = absl::integer_sequence<int, 0, 1>::size(); - EXPECT_EQ(2, sz); -} - -TEST(IntegerSequenceTest, MakeIndexSequence) { - StaticAssertTypeEq<absl::index_sequence<>, absl::make_index_sequence<0>>(); - StaticAssertTypeEq<absl::index_sequence<0>, absl::make_index_sequence<1>>(); - StaticAssertTypeEq<absl::index_sequence<0, 1>, - absl::make_index_sequence<2>>(); - StaticAssertTypeEq<absl::index_sequence<0, 1, 2>, - absl::make_index_sequence<3>>(); -} - -TEST(IntegerSequenceTest, MakeIntegerSequence) { - StaticAssertTypeEq<absl::integer_sequence<int>, - absl::make_integer_sequence<int, 0>>(); - StaticAssertTypeEq<absl::integer_sequence<int, 0>, - absl::make_integer_sequence<int, 1>>(); - StaticAssertTypeEq<absl::integer_sequence<int, 0, 1>, - absl::make_integer_sequence<int, 2>>(); - StaticAssertTypeEq<absl::integer_sequence<int, 0, 1, 2>, - absl::make_integer_sequence<int, 3>>(); -} - -template <typename... Ts> -class Counter {}; - -template <size_t... Is> -void CountAll(absl::index_sequence<Is...>) { - // We only need an alias here, but instantiate a variable to silence warnings - // for unused typedefs in some compilers. - ABSL_ATTRIBUTE_UNUSED Counter<absl::make_index_sequence<Is>...> seq; -} - -// This test verifies that absl::make_index_sequence can handle large arguments -// without blowing up template instantiation stack, going OOM or taking forever -// to compile (there is hard 15 minutes limit imposed by forge). -TEST(IntegerSequenceTest, MakeIndexSequencePerformance) { - // O(log N) template instantiations. - // We only need an alias here, but instantiate a variable to silence warnings - // for unused typedefs in some compilers. - ABSL_ATTRIBUTE_UNUSED absl::make_index_sequence<(1 << 16) - 1> seq; - // O(N) template instantiations. - CountAll(absl::make_index_sequence<(1 << 8) - 1>()); -} - -template <typename F, typename Tup, size_t... Is> -auto ApplyFromTupleImpl(F f, const Tup& tup, absl::index_sequence<Is...>) - -> decltype(f(std::get<Is>(tup)...)) { - return f(std::get<Is>(tup)...); -} - -template <typename Tup> -using TupIdxSeq = absl::make_index_sequence<std::tuple_size<Tup>::value>; - -template <typename F, typename Tup> -auto ApplyFromTuple(F f, const Tup& tup) - -> decltype(ApplyFromTupleImpl(f, tup, TupIdxSeq<Tup>{})) { - return ApplyFromTupleImpl(f, tup, TupIdxSeq<Tup>{}); -} - -template <typename T> -std::string Fmt(const T& x) { - std::ostringstream os; - os << x; - return os.str(); -} - -struct PoorStrCat { - template <typename... Args> - std::string operator()(const Args&... args) const { - std::string r; - for (const auto& e : {Fmt(args)...}) r += e; - return r; - } -}; - -template <typename Tup, size_t... Is> -std::vector<std::string> TupStringVecImpl(const Tup& tup, - absl::index_sequence<Is...>) { - return {Fmt(std::get<Is>(tup))...}; -} - -template <typename... Ts> -std::vector<std::string> TupStringVec(const std::tuple<Ts...>& tup) { - return TupStringVecImpl(tup, absl::index_sequence_for<Ts...>()); -} - -TEST(MakeIndexSequenceTest, ApplyFromTupleExample) { - PoorStrCat f{}; - EXPECT_EQ("12abc3.14", f(12, "abc", 3.14)); - EXPECT_EQ("12abc3.14", ApplyFromTuple(f, std::make_tuple(12, "abc", 3.14))); -} - -TEST(IndexSequenceForTest, Basic) { - StaticAssertTypeEq<absl::index_sequence<>, absl::index_sequence_for<>>(); - StaticAssertTypeEq<absl::index_sequence<0>, absl::index_sequence_for<int>>(); - StaticAssertTypeEq<absl::index_sequence<0, 1, 2, 3>, - absl::index_sequence_for<int, void, char, int>>(); -} - -TEST(IndexSequenceForTest, Example) { - EXPECT_THAT(TupStringVec(std::make_tuple(12, "abc", 3.14)), - ElementsAre("12", "abc", "3.14")); -} - -int Function(int a, int b) { return a - b; } - -int Sink(std::unique_ptr<int> p) { return *p; } - -std::unique_ptr<int> Factory(int n) { return absl::make_unique<int>(n); } - -void NoOp() {} - -struct ConstFunctor { - int operator()(int a, int b) const { return a - b; } -}; - -struct MutableFunctor { - int operator()(int a, int b) { return a - b; } -}; - -struct EphemeralFunctor { - EphemeralFunctor() {} - EphemeralFunctor(const EphemeralFunctor&) {} - EphemeralFunctor(EphemeralFunctor&&) {} - int operator()(int a, int b) && { return a - b; } -}; - -struct OverloadedFunctor { - OverloadedFunctor() {} - OverloadedFunctor(const OverloadedFunctor&) {} - OverloadedFunctor(OverloadedFunctor&&) {} - template <typename... Args> - std::string operator()(const Args&... args) & { - return absl::StrCat("&", args...); - } - template <typename... Args> - std::string operator()(const Args&... args) const& { - return absl::StrCat("const&", args...); - } - template <typename... Args> - std::string operator()(const Args&... args) && { - return absl::StrCat("&&", args...); - } -}; - -struct Class { - int Method(int a, int b) { return a - b; } - int ConstMethod(int a, int b) const { return a - b; } - - int member; -}; - -struct FlipFlop { - int ConstMethod() const { return member; } - FlipFlop operator*() const { return {-member}; } - - int member; -}; - -TEST(ApplyTest, Function) { - EXPECT_EQ(1, absl::apply(Function, std::make_tuple(3, 2))); - EXPECT_EQ(1, absl::apply(&Function, std::make_tuple(3, 2))); -} - -TEST(ApplyTest, NonCopyableArgument) { - EXPECT_EQ(42, absl::apply(Sink, std::make_tuple(absl::make_unique<int>(42)))); -} - -TEST(ApplyTest, NonCopyableResult) { - EXPECT_THAT(absl::apply(Factory, std::make_tuple(42)), - ::testing::Pointee(42)); -} - -TEST(ApplyTest, VoidResult) { absl::apply(NoOp, std::tuple<>()); } - -TEST(ApplyTest, ConstFunctor) { - EXPECT_EQ(1, absl::apply(ConstFunctor(), std::make_tuple(3, 2))); -} - -TEST(ApplyTest, MutableFunctor) { - MutableFunctor f; - EXPECT_EQ(1, absl::apply(f, std::make_tuple(3, 2))); - EXPECT_EQ(1, absl::apply(MutableFunctor(), std::make_tuple(3, 2))); -} -TEST(ApplyTest, EphemeralFunctor) { - EphemeralFunctor f; - EXPECT_EQ(1, absl::apply(std::move(f), std::make_tuple(3, 2))); - EXPECT_EQ(1, absl::apply(EphemeralFunctor(), std::make_tuple(3, 2))); -} -TEST(ApplyTest, OverloadedFunctor) { - OverloadedFunctor f; - const OverloadedFunctor& cf = f; - - EXPECT_EQ("&", absl::apply(f, std::tuple<>{})); - EXPECT_EQ("& 42", absl::apply(f, std::make_tuple(" 42"))); - - EXPECT_EQ("const&", absl::apply(cf, std::tuple<>{})); - EXPECT_EQ("const& 42", absl::apply(cf, std::make_tuple(" 42"))); - - EXPECT_EQ("&&", absl::apply(std::move(f), std::tuple<>{})); - OverloadedFunctor f2; - EXPECT_EQ("&& 42", absl::apply(std::move(f2), std::make_tuple(" 42"))); -} - -TEST(ApplyTest, ReferenceWrapper) { - ConstFunctor cf; - MutableFunctor mf; - EXPECT_EQ(1, absl::apply(std::cref(cf), std::make_tuple(3, 2))); - EXPECT_EQ(1, absl::apply(std::ref(cf), std::make_tuple(3, 2))); - EXPECT_EQ(1, absl::apply(std::ref(mf), std::make_tuple(3, 2))); -} - -TEST(ApplyTest, MemberFunction) { - std::unique_ptr<Class> p(new Class); - std::unique_ptr<const Class> cp(new Class); - EXPECT_EQ( - 1, absl::apply(&Class::Method, - std::tuple<std::unique_ptr<Class>&, int, int>(p, 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::Method, - std::tuple<Class*, int, int>(p.get(), 3, 2))); - EXPECT_EQ( - 1, absl::apply(&Class::Method, std::tuple<Class&, int, int>(*p, 3, 2))); - - EXPECT_EQ( - 1, absl::apply(&Class::ConstMethod, - std::tuple<std::unique_ptr<Class>&, int, int>(p, 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::tuple<Class*, int, int>(p.get(), 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::tuple<Class&, int, int>(*p, 3, 2))); - - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::tuple<std::unique_ptr<const Class>&, int, int>( - cp, 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::tuple<const Class*, int, int>(cp.get(), 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::tuple<const Class&, int, int>(*cp, 3, 2))); - - EXPECT_EQ(1, absl::apply(&Class::Method, - std::make_tuple(absl::make_unique<Class>(), 3, 2))); - EXPECT_EQ(1, absl::apply(&Class::ConstMethod, - std::make_tuple(absl::make_unique<Class>(), 3, 2))); - EXPECT_EQ( - 1, absl::apply(&Class::ConstMethod, - std::make_tuple(absl::make_unique<const Class>(), 3, 2))); -} - -TEST(ApplyTest, DataMember) { - std::unique_ptr<Class> p(new Class{42}); - std::unique_ptr<const Class> cp(new Class{42}); - EXPECT_EQ( - 42, absl::apply(&Class::member, std::tuple<std::unique_ptr<Class>&>(p))); - EXPECT_EQ(42, absl::apply(&Class::member, std::tuple<Class&>(*p))); - EXPECT_EQ(42, absl::apply(&Class::member, std::tuple<Class*>(p.get()))); - - absl::apply(&Class::member, std::tuple<std::unique_ptr<Class>&>(p)) = 42; - absl::apply(&Class::member, std::tuple<Class*>(p.get())) = 42; - absl::apply(&Class::member, std::tuple<Class&>(*p)) = 42; - - EXPECT_EQ(42, absl::apply(&Class::member, - std::tuple<std::unique_ptr<const Class>&>(cp))); - EXPECT_EQ(42, absl::apply(&Class::member, std::tuple<const Class&>(*cp))); - EXPECT_EQ(42, - absl::apply(&Class::member, std::tuple<const Class*>(cp.get()))); -} - -TEST(ApplyTest, FlipFlop) { - FlipFlop obj = {42}; - // This call could resolve to (obj.*&FlipFlop::ConstMethod)() or - // ((*obj).*&FlipFlop::ConstMethod)(). We verify that it's the former. - EXPECT_EQ(42, absl::apply(&FlipFlop::ConstMethod, std::make_tuple(obj))); - EXPECT_EQ(42, absl::apply(&FlipFlop::member, std::make_tuple(obj))); -} - -TEST(ExchangeTest, MoveOnly) { - auto a = Factory(1); - EXPECT_EQ(1, *a); - auto b = absl::exchange(a, Factory(2)); - EXPECT_EQ(2, *a); - EXPECT_EQ(1, *b); -} - -TEST(MakeFromTupleTest, String) { - EXPECT_EQ( - absl::make_from_tuple<std::string>(std::make_tuple("hello world", 5)), - "hello"); -} - -TEST(MakeFromTupleTest, MoveOnlyParameter) { - struct S { - S(std::unique_ptr<int> n, std::unique_ptr<int> m) : value(*n + *m) {} - int value = 0; - }; - auto tup = - std::make_tuple(absl::make_unique<int>(3), absl::make_unique<int>(4)); - auto s = absl::make_from_tuple<S>(std::move(tup)); - EXPECT_EQ(s.value, 7); -} - -TEST(MakeFromTupleTest, NoParameters) { - struct S { - S() : value(1) {} - int value = 2; - }; - EXPECT_EQ(absl::make_from_tuple<S>(std::make_tuple()).value, 1); -} - -TEST(MakeFromTupleTest, Pair) { - EXPECT_EQ( - (absl::make_from_tuple<std::pair<bool, int>>(std::make_tuple(true, 17))), - std::make_pair(true, 17)); -} - -} // namespace - |