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Remove all uses of GTEST_DISALLOW_{MOVE_,}ASSIGN_.

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None of these are strictly needed for correctness.
A large number of them (maybe all of them?) trigger `-Wdeprecated`
warnings on Clang trunk as soon as you try to use the implicitly
defaulted (but deprecated) copy constructor of a class that has
deleted its copy assignment operator.

By declaring a deleted copy assignment operator, the old code
also caused the move constructor and move assignment operator
to be non-declared. This means that the old code never got move
semantics -- "move-construction" would simply call the defaulted
(but deprecated) copy constructor instead. With the new code,
"move-construction" calls the defaulted move constructor, which
I believe is what we want to happen. So this is a runtime
performance optimization.

Unfortunately we can't yet physically remove the definitions
of these macros from gtest-port.h, because they are being used
by other code internally at Google (according to zhangxy988).
But no new uses should be added going forward.
This commit is contained in:
Arthur O'Dwyer
2020-04-16 15:52:17 -04:00
parent 4f002f1e23
commit 766ac2e1a4
11 changed files with 2 additions and 162 deletions
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36
googlemock/include/gmock/gmock-actions.h
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@@ -570,13 +570,9 @@ class PolymorphicAction {
private:
Impl impl_;
GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
};
Impl impl_;
GTEST_DISALLOW_ASSIGN_(PolymorphicAction);
};
// Creates an Action from its implementation and returns it. The
@@ -717,13 +713,9 @@ class ReturnAction {
private:
bool performed_;
const std::shared_ptr<R> wrapper_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const std::shared_ptr<R> value_;
GTEST_DISALLOW_ASSIGN_(ReturnAction);
};
// Implements the ReturnNull() action.
@@ -784,13 +776,9 @@ class ReturnRefAction {
private:
T& ref_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
T& ref_;
GTEST_DISALLOW_ASSIGN_(ReturnRefAction);
};
// Implements the polymorphic ReturnRefOfCopy(x) action, which can be
@@ -831,13 +819,9 @@ class ReturnRefOfCopyAction {
private:
T value_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const T value_;
GTEST_DISALLOW_ASSIGN_(ReturnRefOfCopyAction);
};
// Implements the polymorphic ReturnRoundRobin(v) action, which can be
@@ -894,8 +878,6 @@ class AssignAction {
private:
T1* const ptr_;
const T2 value_;
GTEST_DISALLOW_ASSIGN_(AssignAction);
};
#if !GTEST_OS_WINDOWS_MOBILE
@@ -917,8 +899,6 @@ class SetErrnoAndReturnAction {
private:
const int errno_;
const T result_;
GTEST_DISALLOW_ASSIGN_(SetErrnoAndReturnAction);
};
#endif // !GTEST_OS_WINDOWS_MOBILE
@@ -1024,13 +1004,9 @@ class IgnoreResultAction {
OriginalFunction;
const Action<OriginalFunction> action_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const A action_;
GTEST_DISALLOW_ASSIGN_(IgnoreResultAction);
};
template <typename InnerAction, size_t... I>
@@ -1467,13 +1443,7 @@ auto InvokeArgumentAdl(AdlTag, F f, Args... args) -> decltype(f(args...)) {
template <GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
GMOCK_ACTION_FIELD_PARAMS_(params) \
\
private: \
GTEST_DISALLOW_ASSIGN_(gmock_Impl); \
}; \
\
private: \
GTEST_DISALLOW_ASSIGN_(full_name); \
}; \
template <GMOCK_ACTION_TYPENAME_PARAMS_(params)> \
inline full_name<GMOCK_ACTION_TYPE_PARAMS_(params)> name( \
@@ -1512,13 +1482,7 @@ auto InvokeArgumentAdl(AdlTag, F f, Args... args) -> decltype(f(args...)) {
} \
template <GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
\
private: \
GTEST_DISALLOW_ASSIGN_(gmock_Impl); \
}; \
\
private: \
GTEST_DISALLOW_ASSIGN_(name##Action); \
}; \
inline name##Action name() { return name##Action(); } \
template <typename F> \