gitMirror/googletest
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #2393 from kuzkry:custom-type-traits-remove_const

Browse Source 
PiperOrigin-RevId: 264652890
This commit is contained in:
Xiaoyi Zhang
2019-08-21 17:13:34 -04:00
parent d1ad644db4 364839ab14
commit fb49e6c164
4 changed files with 27 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
googletest/include/gtest/internal/gtest-internal.h
View File

@@ -869,30 +869,9 @@ struct RemoveReference<T&> { typedef T type; }; // NOLINT
#define GTEST_REMOVE_REFERENCE_(T) \
typename ::testing::internal::RemoveReference<T>::type
// Removes const from a type if it is a const type, otherwise leaves
// it unchanged. This is the same as tr1::remove_const, which is not
// widely available yet.
template <typename T>
struct RemoveConst { typedef T type; }; // NOLINT
template <typename T>
struct RemoveConst<const T> { typedef T type; }; // NOLINT
// MSVC 8.0, Sun C++, and IBM XL C++ have a bug which causes the above
// definition to fail to remove the const in 'const int[3]' and 'const
// char[3][4]'. The following specialization works around the bug.
template <typename T, size_t N>
struct RemoveConst<const T[N]> {
typedef typename RemoveConst<T>::type type[N];
};
// A handy wrapper around RemoveConst that works when the argument
// T depends on template parameters.
#define GTEST_REMOVE_CONST_(T) \
typename ::testing::internal::RemoveConst<T>::type
// Turns const U&, U&, const U, and U all into U.
#define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(T))
typename std::remove_const<GTEST_REMOVE_REFERENCE_(T)>::type
// IsAProtocolMessage<T>::value is a compile-time bool constant that's
// true if T is type proto2::Message or a subclass of it.