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Merge 7f4f58da20e1066a888d3e4bcbef541db798a605 into 90a443f9c2

Closes #2395

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/googletest/pull/2395 from kuzkry:custom-type-traits-remove_reference 7f4f58da20e1066a888d3e4bcbef541db798a605
PiperOrigin-RevId: 266189044
This commit is contained in:
kuzkry
2019-08-29 14:38:09 -04:00
committed by Gennadiy Rozental
parent 565f1b8482
commit ab8f346b07
6 changed files with 6 additions and 62 deletions
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18
googletest/include/gtest/internal/gtest-internal.h
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@@ -856,30 +856,16 @@ template <typename T>
struct CompileAssertTypesEqual<T, T> {
};
// Removes the reference from a type if it is a reference type,
// otherwise leaves it unchanged. This is the same as
// tr1::remove_reference, which is not widely available yet.
template <typename T>
struct RemoveReference { typedef T type; }; // NOLINT
template <typename T>
struct RemoveReference<T&> { typedef T type; }; // NOLINT
// A handy wrapper around RemoveReference that works when the argument
// T depends on template parameters.
#define GTEST_REMOVE_REFERENCE_(T) \
typename ::testing::internal::RemoveReference<T>::type
// Turns const U&, U&, const U, and U all into U.
#define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
typename std::remove_const<GTEST_REMOVE_REFERENCE_(T)>::type
typename std::remove_const<typename std::remove_reference<T>::type>::type
// IsAProtocolMessage<T>::value is a compile-time bool constant that's
// true if T is type proto2::Message or a subclass of it.
template <typename T>
struct IsAProtocolMessage
: public bool_constant<
std::is_convertible<const T*, const ::proto2::Message*>::value> {
};
std::is_convertible<const T*, const ::proto2::Message*>::value> {};
// When the compiler sees expression IsContainerTest<C>(0), if C is an
// STL-style container class, the first overload of IsContainerTest

25
googletest/test/gtest_unittest.cc
View File

@@ -262,7 +262,6 @@ using testing::internal::OsStackTraceGetterInterface;
using testing::internal::ParseInt32Flag;
using testing::internal::RelationToSourceCopy;
using testing::internal::RelationToSourceReference;
using testing::internal::RemoveReference;
using testing::internal::ShouldRunTestOnShard;
using testing::internal::ShouldShard;
using testing::internal::ShouldUseColor;
@@ -7110,30 +7109,6 @@ TEST(CompileAssertTypesEqual, CompilesWhenTypesAreEqual) {
CompileAssertTypesEqual<int*, int*>();
}
// Tests that RemoveReference does not affect non-reference types.
TEST(RemoveReferenceTest, DoesNotAffectNonReferenceType) {
CompileAssertTypesEqual<int, RemoveReference<int>::type>();
CompileAssertTypesEqual<const char, RemoveReference<const char>::type>();
}
// Tests that RemoveReference removes reference from reference types.
TEST(RemoveReferenceTest, RemovesReference) {
CompileAssertTypesEqual<int, RemoveReference<int&>::type>();
CompileAssertTypesEqual<const char, RemoveReference<const char&>::type>();
}
// Tests GTEST_REMOVE_REFERENCE_.
template <typename T1, typename T2>
void TestGTestRemoveReference() {
CompileAssertTypesEqual<T1, GTEST_REMOVE_REFERENCE_(T2)>();
}
TEST(RemoveReferenceTest, MacroVersion) {
TestGTestRemoveReference<int, int>();
TestGTestRemoveReference<const char, const char&>();
}
// Tests GTEST_REMOVE_REFERENCE_AND_CONST_.
template <typename T1, typename T2>