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-rw-r--r--googlemock/include/gmock/gmock-actions.h203
1 files changed, 60 insertions, 143 deletions
diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index 7105830..2814125 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -42,18 +42,15 @@
#endif
#include <algorithm>
+#include <functional>
#include <memory>
#include <string>
+#include <type_traits>
#include <utility>
#include "gmock/internal/gmock-internal-utils.h"
#include "gmock/internal/gmock-port.h"
-#if GTEST_LANG_CXX11 // Defined by gtest-port.h via gmock-port.h.
-#include <functional>
-#include <type_traits>
-#endif // GTEST_LANG_CXX11
-
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
@@ -72,9 +69,6 @@ namespace testing {
namespace internal {
-template <typename F1, typename F2>
-class ActionAdaptor;
-
// BuiltInDefaultValueGetter<T, true>::Get() returns a
// default-constructed T value. BuiltInDefaultValueGetter<T,
// false>::Get() crashes with an error.
@@ -105,7 +99,6 @@ struct BuiltInDefaultValueGetter<T, false> {
template <typename T>
class BuiltInDefaultValue {
public:
-#if GTEST_LANG_CXX11
// This function returns true iff type T has a built-in default value.
static bool Exists() {
return ::std::is_default_constructible<T>::value;
@@ -115,18 +108,6 @@ class BuiltInDefaultValue {
return BuiltInDefaultValueGetter<
T, ::std::is_default_constructible<T>::value>::Get();
}
-
-#else // GTEST_LANG_CXX11
- // This function returns true iff type T has a built-in default value.
- static bool Exists() {
- return false;
- }
-
- static T Get() {
- return BuiltInDefaultValueGetter<T, false>::Get();
- }
-
-#endif // GTEST_LANG_CXX11
};
// This partial specialization says that we use the same built-in
@@ -358,6 +339,19 @@ class ActionInterface {
// object as a handle to it.
template <typename F>
class Action {
+ // Adapter class to allow constructing Action from a legacy ActionInterface.
+ // New code should create Actions from functors instead.
+ struct ActionAdapter {
+ // Adapter must be copyable to satisfy std::function requirements.
+ ::std::shared_ptr<ActionInterface<F>> impl_;
+
+ template <typename... Args>
+ typename internal::Function<F>::Result operator()(Args&&... args) {
+ return impl_->Perform(
+ ::std::forward_as_tuple(::std::forward<Args>(args)...));
+ }
+ };
+
public:
typedef typename internal::Function<F>::Result Result;
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
@@ -366,7 +360,6 @@ class Action {
// STL containers.
Action() {}
-#if GTEST_LANG_CXX11
// Construct an Action from a specified callable.
// This cannot take std::function directly, because then Action would not be
// directly constructible from lambda (it would require two conversions).
@@ -374,26 +367,19 @@ class Action {
typename = typename ::std::enable_if<
::std::is_constructible<::std::function<F>, G>::value>::type>
Action(G&& fun) : fun_(::std::forward<G>(fun)) {} // NOLINT
-#endif
// Constructs an Action from its implementation.
- explicit Action(ActionInterface<F>* impl) : impl_(impl) {}
+ explicit Action(ActionInterface<F>* impl)
+ : fun_(ActionAdapter{::std::shared_ptr<ActionInterface<F>>(impl)}) {}
// This constructor allows us to turn an Action<Func> object into an
// Action<F>, as long as F's arguments can be implicitly converted
- // to Func's and Func's return type can be implicitly converted to
- // F's.
+ // to Func's and Func's return type can be implicitly converted to F's.
template <typename Func>
- explicit Action(const Action<Func>& action);
+ explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
// Returns true iff this is the DoDefault() action.
- bool IsDoDefault() const {
-#if GTEST_LANG_CXX11
- return impl_ == nullptr && fun_ == nullptr;
-#else
- return impl_ == NULL;
-#endif
- }
+ bool IsDoDefault() const { return fun_ == nullptr; }
// Performs the action. Note that this method is const even though
// the corresponding method in ActionInterface is not. The reason
@@ -405,31 +391,15 @@ class Action {
if (IsDoDefault()) {
internal::IllegalDoDefault(__FILE__, __LINE__);
}
-#if GTEST_LANG_CXX11
- if (fun_ != nullptr) {
- return internal::Apply(fun_, ::std::move(args));
- }
-#endif
- return impl_->Perform(args);
+ return internal::Apply(fun_, ::std::move(args));
}
private:
- template <typename F1, typename F2>
- friend class internal::ActionAdaptor;
-
template <typename G>
friend class Action;
- // In C++11, Action can be implemented either as a generic functor (through
- // std::function), or legacy ActionInterface. In C++98, only ActionInterface
- // is available. The invariants are as follows:
- // * in C++98, impl_ is null iff this is the default action
- // * in C++11, at most one of fun_ & impl_ may be nonnull; both are null iff
- // this is the default action
-#if GTEST_LANG_CXX11
+ // fun_ is an empty function iff this is the DoDefault() action.
::std::function<F> fun_;
-#endif
- std::shared_ptr<ActionInterface<F>> impl_;
};
// The PolymorphicAction class template makes it easy to implement a
@@ -508,26 +478,6 @@ inline PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl) {
namespace internal {
-// Allows an Action<F2> object to pose as an Action<F1>, as long as F2
-// and F1 are compatible.
-template <typename F1, typename F2>
-class ActionAdaptor : public ActionInterface<F1> {
- public:
- typedef typename internal::Function<F1>::Result Result;
- typedef typename internal::Function<F1>::ArgumentTuple ArgumentTuple;
-
- explicit ActionAdaptor(const Action<F2>& from) : impl_(from.impl_) {}
-
- Result Perform(const ArgumentTuple& args) override {
- return impl_->Perform(args);
- }
-
- private:
- const std::shared_ptr<ActionInterface<F2>> impl_;
-
- GTEST_DISALLOW_ASSIGN_(ActionAdaptor);
-};
-
// Helper struct to specialize ReturnAction to execute a move instead of a copy
// on return. Useful for move-only types, but could be used on any type.
template <typename T>
@@ -574,7 +524,7 @@ class ReturnAction {
// This template type conversion operator allows Return(x) to be
// used in ANY function that returns x's type.
template <typename F>
- operator Action<F>() const {
+ operator Action<F>() const { // NOLINT
// Assert statement belongs here because this is the best place to verify
// conditions on F. It produces the clearest error messages
// in most compilers.
@@ -587,6 +537,8 @@ class ReturnAction {
GTEST_COMPILE_ASSERT_(
!is_reference<Result>::value,
use_ReturnRef_instead_of_Return_to_return_a_reference);
+ static_assert(!std::is_void<Result>::value,
+ "Can't use Return() on an action expected to return `void`.");
return Action<F>(new Impl<R, F>(value_));
}
@@ -660,13 +612,7 @@ class ReturnNullAction {
// pointer type on compile time.
template <typename Result, typename ArgumentTuple>
static Result Perform(const ArgumentTuple&) {
-#if GTEST_LANG_CXX11
return nullptr;
-#else
- GTEST_COMPILE_ASSERT_(internal::is_pointer<Result>::value,
- ReturnNull_can_be_used_to_return_a_pointer_only);
- return NULL;
-#endif // GTEST_LANG_CXX11
}
};
@@ -1017,51 +963,6 @@ void PrintTo(const ReferenceWrapper<T>& ref, ::std::ostream* os) {
UniversalPrinter<T&>::Print(value, os);
}
-// Does two actions sequentially. Used for implementing the DoAll(a1,
-// a2, ...) action.
-template <typename Action1, typename Action2>
-class DoBothAction {
- public:
- DoBothAction(Action1 action1, Action2 action2)
- : action1_(action1), action2_(action2) {}
-
- // This template type conversion operator allows DoAll(a1, ..., a_n)
- // to be used in ANY function of compatible type.
- template <typename F>
- operator Action<F>() const {
- return Action<F>(new Impl<F>(action1_, action2_));
- }
-
- private:
- // Implements the DoAll(...) action for a particular function type F.
- template <typename F>
- class Impl : public ActionInterface<F> {
- public:
- typedef typename Function<F>::Result Result;
- typedef typename Function<F>::ArgumentTuple ArgumentTuple;
- typedef typename Function<F>::MakeResultVoid VoidResult;
-
- Impl(const Action<VoidResult>& action1, const Action<F>& action2)
- : action1_(action1), action2_(action2) {}
-
- Result Perform(const ArgumentTuple& args) override {
- action1_.Perform(args);
- return action2_.Perform(args);
- }
-
- private:
- const Action<VoidResult> action1_;
- const Action<F> action2_;
-
- GTEST_DISALLOW_ASSIGN_(Impl);
- };
-
- Action1 action1_;
- Action2 action2_;
-
- GTEST_DISALLOW_ASSIGN_(DoBothAction);
-};
-
template <typename InnerAction, size_t... I>
struct WithArgsAction {
InnerAction action;
@@ -1080,6 +981,35 @@ struct WithArgsAction {
}
};
+template <typename... Actions>
+struct DoAllAction {
+ private:
+ template <typename... Args, size_t... I>
+ std::vector<Action<void(Args...)>> Convert(IndexSequence<I...>) const {
+ return {std::get<I>(actions)...};
+ }
+
+ public:
+ std::tuple<Actions...> actions;
+
+ template <typename R, typename... Args>
+ operator Action<R(Args...)>() const { // NOLINT
+ struct Op {
+ std::vector<Action<void(Args...)>> converted;
+ Action<R(Args...)> last;
+ R operator()(Args... args) const {
+ auto tuple_args = std::forward_as_tuple(std::forward<Args>(args)...);
+ for (auto& a : converted) {
+ a.Perform(tuple_args);
+ }
+ return last.Perform(tuple_args);
+ }
+ };
+ return Op{Convert<Args...>(MakeIndexSequence<sizeof...(Actions) - 1>()),
+ std::get<sizeof...(Actions) - 1>(actions)};
+ }
+};
+
} // namespace internal
// An Unused object can be implicitly constructed from ANY value.
@@ -1114,20 +1044,12 @@ struct WithArgsAction {
// EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
typedef internal::IgnoredValue Unused;
-// This constructor allows us to turn an Action<From> object into an
-// Action<To>, as long as To's arguments can be implicitly converted
-// to From's and From's return type cann be implicitly converted to
-// To's.
-template <typename To>
-template <typename From>
-Action<To>::Action(const Action<From>& from)
- :
-#if GTEST_LANG_CXX11
- fun_(from.fun_),
-#endif
- impl_(from.impl_ == nullptr
- ? nullptr
- : new internal::ActionAdaptor<To, From>(from)) {
+// Creates an action that does actions a1, a2, ..., sequentially in
+// each invocation.
+template <typename... Action>
+internal::DoAllAction<typename std::decay<Action>::type...> DoAll(
+ Action&&... action) {
+ return {std::forward_as_tuple(std::forward<Action>(action)...)};
}
// WithArg<k>(an_action) creates an action that passes the k-th
@@ -1218,10 +1140,6 @@ SetArgPointee(const T& x) {
N, T, internal::IsAProtocolMessage<T>::value>(x));
}
-#if !((GTEST_GCC_VER_ && GTEST_GCC_VER_ < 40000) || GTEST_OS_SYMBIAN)
-// This overload allows SetArgPointee() to accept a string literal.
-// GCC prior to the version 4.0 and Symbian C++ compiler cannot distinguish
-// this overload from the templated version and emit a compile error.
template <size_t N>
PolymorphicAction<
internal::SetArgumentPointeeAction<N, const char*, false> >
@@ -1237,7 +1155,6 @@ SetArgPointee(const wchar_t* p) {
return MakePolymorphicAction(internal::SetArgumentPointeeAction<
N, const wchar_t*, false>(p));
}
-#endif
// The following version is DEPRECATED.
template <size_t N, typename T>