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-rw-r--r--absl/base/BUILD.bazel2
-rw-r--r--absl/base/CMakeLists.txt2
-rw-r--r--absl/base/internal/raw_logging.cc2
-rw-r--r--absl/base/internal/raw_logging.h2
-rw-r--r--absl/base/log_severity.h (renamed from absl/base/internal/log_severity.h)0
-rw-r--r--absl/debugging/internal/stacktrace_aarch64-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_arm-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_generic-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_powerpc-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_unimplemented-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_win32-inl.inc8
-rw-r--r--absl/debugging/internal/stacktrace_x86-inl.inc8
-rw-r--r--absl/debugging/stacktrace.h7
-rw-r--r--absl/numeric/int128.h8
-rw-r--r--absl/synchronization/mutex.h41
-rw-r--r--absl/types/optional.h4
-rw-r--r--absl/utility/BUILD.bazel3
-rw-r--r--absl/utility/utility.h79
-rw-r--r--absl/utility/utility_test.cc178
19 files changed, 326 insertions, 58 deletions
diff --git a/absl/base/BUILD.bazel b/absl/base/BUILD.bazel
index 609d78ad..1778f4f8 100644
--- a/absl/base/BUILD.bazel
+++ b/absl/base/BUILD.bazel
@@ -151,7 +151,6 @@ cc_library(
"casts.h",
"internal/atomic_hook.h",
"internal/cycleclock.h",
- "internal/log_severity.h",
"internal/low_level_scheduling.h",
"internal/per_thread_tls.h",
"internal/raw_logging.h",
@@ -160,6 +159,7 @@ cc_library(
"internal/thread_identity.h",
"internal/tsan_mutex_interface.h",
"internal/unscaledcycleclock.h",
+ "log_severity.h",
],
copts = ABSL_DEFAULT_COPTS,
deps = [
diff --git a/absl/base/CMakeLists.txt b/absl/base/CMakeLists.txt
index cb0daa69..d3066163 100644
--- a/absl/base/CMakeLists.txt
+++ b/absl/base/CMakeLists.txt
@@ -20,6 +20,7 @@ list(APPEND BASE_PUBLIC_HEADERS
"casts.h"
"config.h"
"dynamic_annotations.h"
+ "log_severity.h"
"macros.h"
"optimization.h"
"policy_checks.h"
@@ -36,7 +37,6 @@ list(APPEND BASE_INTERNAL_HEADERS
"internal/exception_safety_testing.h"
"internal/identity.h"
"internal/invoke.h"
- "internal/log_severity.h"
"internal/low_level_alloc.h"
"internal/low_level_scheduling.h"
"internal/malloc_extension.h"
diff --git a/absl/base/internal/raw_logging.cc b/absl/base/internal/raw_logging.cc
index 301b108c..86e34d45 100644
--- a/absl/base/internal/raw_logging.cc
+++ b/absl/base/internal/raw_logging.cc
@@ -22,7 +22,7 @@
#include "absl/base/config.h"
#include "absl/base/internal/atomic_hook.h"
-#include "absl/base/internal/log_severity.h"
+#include "absl/base/log_severity.h"
// We know how to perform low-level writes to stderr in POSIX and Windows. For
// these platforms, we define the token ABSL_LOW_LEVEL_WRITE_SUPPORTED.
diff --git a/absl/base/internal/raw_logging.h b/absl/base/internal/raw_logging.h
index 568d2afc..1b2a44b7 100644
--- a/absl/base/internal/raw_logging.h
+++ b/absl/base/internal/raw_logging.h
@@ -20,7 +20,7 @@
#define ABSL_BASE_INTERNAL_RAW_LOGGING_H_
#include "absl/base/attributes.h"
-#include "absl/base/internal/log_severity.h"
+#include "absl/base/log_severity.h"
#include "absl/base/macros.h"
#include "absl/base/port.h"
diff --git a/absl/base/internal/log_severity.h b/absl/base/log_severity.h
index deaf6a57..deaf6a57 100644
--- a/absl/base/internal/log_severity.h
+++ b/absl/base/log_severity.h
diff --git a/absl/debugging/internal/stacktrace_aarch64-inl.inc b/absl/debugging/internal/stacktrace_aarch64-inl.inc
index c125ea29..45802e73 100644
--- a/absl/debugging/internal/stacktrace_aarch64-inl.inc
+++ b/absl/debugging/internal/stacktrace_aarch64-inl.inc
@@ -178,4 +178,12 @@ static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
return n;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return true;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_AARCH64_INL_H_
diff --git a/absl/debugging/internal/stacktrace_arm-inl.inc b/absl/debugging/internal/stacktrace_arm-inl.inc
index 566b6d34..c8408337 100644
--- a/absl/debugging/internal/stacktrace_arm-inl.inc
+++ b/absl/debugging/internal/stacktrace_arm-inl.inc
@@ -112,4 +112,12 @@ static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
return n;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return false;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_ARM_INL_H_
diff --git a/absl/debugging/internal/stacktrace_generic-inl.inc b/absl/debugging/internal/stacktrace_generic-inl.inc
index de4881e3..2c9ca410 100644
--- a/absl/debugging/internal/stacktrace_generic-inl.inc
+++ b/absl/debugging/internal/stacktrace_generic-inl.inc
@@ -48,4 +48,12 @@ static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
return result_count;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return true;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
diff --git a/absl/debugging/internal/stacktrace_powerpc-inl.inc b/absl/debugging/internal/stacktrace_powerpc-inl.inc
index 9193e2db..4b113269 100644
--- a/absl/debugging/internal/stacktrace_powerpc-inl.inc
+++ b/absl/debugging/internal/stacktrace_powerpc-inl.inc
@@ -232,4 +232,12 @@ static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
return n;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return true;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_POWERPC_INL_H_
diff --git a/absl/debugging/internal/stacktrace_unimplemented-inl.inc b/absl/debugging/internal/stacktrace_unimplemented-inl.inc
index a66be779..e256fdd4 100644
--- a/absl/debugging/internal/stacktrace_unimplemented-inl.inc
+++ b/absl/debugging/internal/stacktrace_unimplemented-inl.inc
@@ -11,4 +11,12 @@ static int UnwindImpl(void** /* result */, int* /* sizes */,
return 0;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return false;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_UNIMPLEMENTED_INL_H_
diff --git a/absl/debugging/internal/stacktrace_win32-inl.inc b/absl/debugging/internal/stacktrace_win32-inl.inc
index 4c7f855b..a8f8a56a 100644
--- a/absl/debugging/internal/stacktrace_win32-inl.inc
+++ b/absl/debugging/internal/stacktrace_win32-inl.inc
@@ -72,4 +72,12 @@ static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
return n;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return false;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_WIN32_INL_H_
diff --git a/absl/debugging/internal/stacktrace_x86-inl.inc b/absl/debugging/internal/stacktrace_x86-inl.inc
index 9bdaa542..7c146ad3 100644
--- a/absl/debugging/internal/stacktrace_x86-inl.inc
+++ b/absl/debugging/internal/stacktrace_x86-inl.inc
@@ -326,4 +326,12 @@ static int UnwindImpl(void **result, int *sizes, int max_depth, int skip_count,
return n;
}
+namespace absl {
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+ return true;
+}
+} // namespace debugging_internal
+} // namespace absl
+
#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_X86_INL_INC_
diff --git a/absl/debugging/stacktrace.h b/absl/debugging/stacktrace.h
index 0aab5749..82da3f15 100644
--- a/absl/debugging/stacktrace.h
+++ b/absl/debugging/stacktrace.h
@@ -155,6 +155,13 @@ extern int DefaultStackUnwinder(void** pcs, int* sizes, int max_depth,
int skip_count, const void* uc,
int* min_dropped_frames);
+namespace debugging_internal {
+// Returns true for platforms which are expected to have functioning stack trace
+// implementations. Intended to be used for tests which want to exclude
+// verification of logic known to be broken because stack traces are not
+// working.
+extern bool StackTraceWorksForTest();
+} // namespace debugging_internal
} // namespace absl
#endif // ABSL_DEBUGGING_STACKTRACE_H_
diff --git a/absl/numeric/int128.h b/absl/numeric/int128.h
index bd1b553a..94d2f7ce 100644
--- a/absl/numeric/int128.h
+++ b/absl/numeric/int128.h
@@ -511,8 +511,8 @@ inline uint128& uint128::operator^=(uint128 other) {
// Shift and arithmetic assign operators.
inline uint128& uint128::operator<<=(int amount) {
- // Shifts of >= 128 are undefined.
- assert(amount < 128);
+ assert(amount >= 0); // Negative shifts are undefined.
+ assert(amount < 128); // Shifts of >= 128 are undefined.
// uint64_t shifts of >= 64 are undefined, so we will need some
// special-casing.
@@ -529,8 +529,8 @@ inline uint128& uint128::operator<<=(int amount) {
}
inline uint128& uint128::operator>>=(int amount) {
- // Shifts of >= 128 are undefined.
- assert(amount < 128);
+ assert(amount >= 0); // Negative shifts are undefined.
+ assert(amount < 128); // Shifts of >= 128 are undefined.
// uint64_t shifts of >= 64 are undefined, so we will need some
// special-casing.
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index 26ac7f61..b09802b5 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -713,7 +713,7 @@ class Condition {
// The implementation may deliver signals to any condition variable at
// any time, even when no call to `Signal()` or `SignalAll()` is made; as a
// result, upon being awoken, you must check the logical condition you have
-// been waiting upon. The implementation wakes waiters in the FIFO order.
+// been waiting upon.
//
// Examples:
//
@@ -742,29 +742,19 @@ class CondVar {
// CondVar::Wait()
//
- // Atomically releases a `Mutex` and blocks on this condition variable. After
- // blocking, the thread will unblock, reacquire the `Mutex`, and return if
- // either:
- // - this condition variable is signalled with `SignalAll()`, or
- // - this condition variable is signalled in any manner and this thread
- // was the most recently blocked thread that has not yet woken.
+ // Atomically releases a `Mutex` and blocks on this condition variable.
+ // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+ // spurious wakeup), then reacquires the `Mutex` and returns.
+ //
// Requires and ensures that the current thread holds the `Mutex`.
void Wait(Mutex *mu);
// CondVar::WaitWithTimeout()
//
- // Atomically releases a `Mutex`, blocks on this condition variable, and
- // attempts to reacquire the mutex upon being signalled, or upon reaching the
- // timeout.
- //
- // After blocking, the thread will unblock, reacquire the `Mutex`, and return
- // for any of the following:
- // - this condition variable is signalled with `SignalAll()`
- // - the timeout has expired
- // - this condition variable is signalled in any manner and this thread
- // was the most recently blocked thread that has not yet woken.
- //
- // Negative timeouts are equivalent to a zero timeout.
+ // Atomically releases a `Mutex` and blocks on this condition variable.
+ // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+ // spurious wakeup), or until the timeout has expired, then reacquires
+ // the `Mutex` and returns.
//
// Returns true if the timeout has expired without this `CondVar`
// being signalled in any manner. If both the timeout has expired
@@ -776,15 +766,10 @@ class CondVar {
// CondVar::WaitWithDeadline()
//
- // Atomically releases a `Mutex`, blocks on this condition variable, and
- // attempts to reacquire the mutex within the provided deadline.
- //
- // After blocking, the thread will unblock, reacquire the `Mutex`, and return
- // for any of the following:
- // - this condition variable is signalled with `SignalAll()`
- // - the deadline has passed
- // - this condition variable is signalled in any manner and this thread
- // was the most recently blocked thread that has not yet woken.
+ // Atomically releases a `Mutex` and blocks on this condition variable.
+ // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+ // spurious wakeup), or until the deadline has passed, then reacquires
+ // the `Mutex` and returns.
//
// Deadlines in the past are equivalent to an immediate deadline.
//
diff --git a/absl/types/optional.h b/absl/types/optional.h
index 353e6183..ef825591 100644
--- a/absl/types/optional.h
+++ b/absl/types/optional.h
@@ -496,7 +496,7 @@ class optional : private optional_internal::optional_data<T>,
// default constructed `T`.
constexpr optional() noexcept {}
- // Construct an` optional` initialized with `nullopt` to hold an empty value.
+ // Construct an `optional` initialized with `nullopt` to hold an empty value.
constexpr optional(nullopt_t) noexcept {} // NOLINT(runtime/explicit)
// Copy constructor, standard semantics
@@ -515,7 +515,7 @@ class optional : private optional_internal::optional_data<T>,
constexpr explicit optional(in_place_t, Args&&... args)
: data_base(in_place_t(), absl::forward<Args>(args)...) {}
- // Constructs a non-empty `optional' direct-initialized value of type `T` from
+ // Constructs a non-empty `optional` direct-initialized value of type `T` from
// the arguments of an initializer_list and `std::forward<Args>(args)...`.
// (The `in_place_t` is a tag used to indicate that the contained object
// should be constructed in-place.)
diff --git a/absl/utility/BUILD.bazel b/absl/utility/BUILD.bazel
index 396b05f8..62984626 100644
--- a/absl/utility/BUILD.bazel
+++ b/absl/utility/BUILD.bazel
@@ -14,6 +14,7 @@ cc_library(
hdrs = ["utility.h"],
copts = ABSL_DEFAULT_COPTS,
deps = [
+ "//absl/base:base_internal",
"//absl/base:config",
"//absl/meta:type_traits",
],
@@ -26,6 +27,8 @@ cc_test(
deps = [
":utility",
"//absl/base:core_headers",
+ "//absl/memory",
+ "//absl/strings",
"@com_google_googletest//:gtest_main",
],
)
diff --git a/absl/utility/utility.h b/absl/utility/utility.h
index 732cd4c5..d37f4c30 100644
--- a/absl/utility/utility.h
+++ b/absl/utility/utility.h
@@ -23,6 +23,7 @@
// * 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>
//
// 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
@@ -31,34 +32,20 @@
// References:
//
// http://en.cppreference.com/w/cpp/utility/integer_sequence
+// http://en.cppreference.com/w/cpp/utility/apply
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3658.html
//
-//
-// Example:
-// // Unpack a tuple for use as a function call's argument list.
-//
-// template <typename F, typename Tup, size_t... Is>
-// auto Impl(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(Impl(f, tup, TupIdxSeq<Tup>{})) {
-// return Impl(f, tup, TupIdxSeq<Tup>{});
-// }
+
#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/invoke.h"
#include "absl/meta/type_traits.h"
namespace absl {
@@ -214,6 +201,62 @@ constexpr T&& forward(
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{void Bar(int);};
+// void user_function(int, std::string);
+// void user_function(std::unique_ptr<Foo>);
+//
+// int main()
+// {
+// std::tuple<int, std::string> tuple1(42, "bar");
+// // Invokes the user function overload on int, std::string.
+// absl::apply(&user_function, tuple1);
+//
+// auto foo = absl::make_unique<Foo>();
+// std::tuple<Foo*, int> tuple2(foo.get(), 42);
+// // Invokes the method Bar on foo with one argument 42.
+// absl::apply(&Foo::Bar, foo.get(), 42);
+//
+// std::tuple<std::unique_ptr<Foo>> tuple3(absl::make_unique<Foo>());
+// // Invokes the user function that takes ownership of the unique
+// // pointer.
+// absl::apply(&user_function, std::move(tuple));
+// }
+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>{});
+}
} // namespace absl
#endif // ABSL_UTILITY_UTILITY_H_
diff --git a/absl/utility/utility_test.cc b/absl/utility/utility_test.cc
index 62cb46f4..342165ed 100644
--- a/absl/utility/utility_test.cc
+++ b/absl/utility/utility_test.cc
@@ -23,6 +23,8 @@
#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 {
@@ -38,8 +40,9 @@ namespace {
#pragma warning( disable : 4101 ) // unreferenced local variable
#endif // _MSC_VER
-using testing::StaticAssertTypeEq;
-using testing::ElementsAre;
+using ::testing::ElementsAre;
+using ::testing::Pointee;
+using ::testing::StaticAssertTypeEq;
TEST(IntegerSequenceTest, ValueType) {
StaticAssertTypeEq<int, absl::integer_sequence<int>::value_type>();
@@ -159,5 +162,176 @@ TEST(IndexSequenceForTest, Example) {
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)));
+}
+
} // namespace
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 04:07:50 +0000