From a0435dc6879c336ab29afd64c380995055d2cd53 Mon Sep 17 00:00:00 2001
From: Mark Mentovai <mark@chromium.org>
Date: Mon, 12 Oct 2015 17:57:51 -0400
Subject: googlemock: Support C++11 language with pre-C++11 library

This guards use of <type_traits> and its features with
GTEST_HAS_STD_TYPE_TRAITS_, and std::function with
GTEST_HAS_STD_FUNCTION_.
---
 googlemock/include/gmock/gmock-actions.h       | 8 ++++----
 googlemock/test/gmock-actions_test.cc          | 4 ++--
 googlemock/test/gmock-matchers_test.cc         | 8 ++++----
 googletest/include/gtest/internal/gtest-port.h | 3 ++-
 4 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index c09c4d6..b3f654a 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -46,7 +46,7 @@
 #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.
+#if GTEST_HAS_STD_TYPE_TRAITS_  // Defined by gtest-port.h via gmock-port.h.
 #include <type_traits>
 #endif
 
@@ -96,7 +96,7 @@ struct BuiltInDefaultValueGetter<T, false> {
 template <typename T>
 class BuiltInDefaultValue {
  public:
-#if GTEST_LANG_CXX11
+#if GTEST_HAS_STD_TYPE_TRAITS_
   // This function returns true iff type T has a built-in default value.
   static bool Exists() {
     return ::std::is_default_constructible<T>::value;
@@ -107,7 +107,7 @@ class BuiltInDefaultValue {
         T, ::std::is_default_constructible<T>::value>::Get();
   }
 
-#else  // GTEST_LANG_CXX11
+#else  // GTEST_HAS_STD_TYPE_TRAITS_
   // This function returns true iff type T has a built-in default value.
   static bool Exists() {
     return false;
@@ -117,7 +117,7 @@ class BuiltInDefaultValue {
     return BuiltInDefaultValueGetter<T, false>::Get();
   }
 
-#endif  // GTEST_LANG_CXX11
+#endif  // GTEST_HAS_STD_TYPE_TRAITS_
 };
 
 // This partial specialization says that we use the same built-in
diff --git a/googlemock/test/gmock-actions_test.cc b/googlemock/test/gmock-actions_test.cc
index a665fc5..f470de4 100644
--- a/googlemock/test/gmock-actions_test.cc
+++ b/googlemock/test/gmock-actions_test.cc
@@ -214,7 +214,7 @@ class MyNonDefaultConstructible {
   int value_;
 };
 
-#if GTEST_LANG_CXX11
+#if GTEST_HAS_STD_TYPE_TRAITS_
 
 TEST(BuiltInDefaultValueTest, ExistsForDefaultConstructibleType) {
   EXPECT_TRUE(BuiltInDefaultValue<MyDefaultConstructible>::Exists());
@@ -224,7 +224,7 @@ TEST(BuiltInDefaultValueTest, IsDefaultConstructedForDefaultConstructibleType) {
   EXPECT_EQ(42, BuiltInDefaultValue<MyDefaultConstructible>::Get().value());
 }
 
-#endif  // GTEST_LANG_CXX11
+#endif  // GTEST_HAS_STD_TYPE_TRAITS_
 
 TEST(BuiltInDefaultValueTest, DoesNotExistForNonDefaultConstructibleType) {
   EXPECT_FALSE(BuiltInDefaultValue<MyNonDefaultConstructible>::Exists());
diff --git a/googlemock/test/gmock-matchers_test.cc b/googlemock/test/gmock-matchers_test.cc
index b09acba..2ff5556 100644
--- a/googlemock/test/gmock-matchers_test.cc
+++ b/googlemock/test/gmock-matchers_test.cc
@@ -1042,14 +1042,14 @@ TEST(IsNullTest, ReferenceToConstLinkedPtr) {
   EXPECT_FALSE(m.Matches(non_null_p));
 }
 
-#if GTEST_LANG_CXX11
+#if GTEST_HAS_STD_FUNCTION_
 TEST(IsNullTest, StdFunction) {
   const Matcher<std::function<void()>> m = IsNull();
 
   EXPECT_TRUE(m.Matches(std::function<void()>()));
   EXPECT_FALSE(m.Matches([]{}));
 }
-#endif  // GTEST_LANG_CXX11
+#endif  // GTEST_HAS_STD_FUNCTION_
 
 // Tests that IsNull() describes itself properly.
 TEST(IsNullTest, CanDescribeSelf) {
@@ -1090,14 +1090,14 @@ TEST(NotNullTest, ReferenceToConstLinkedPtr) {
   EXPECT_TRUE(m.Matches(non_null_p));
 }
 
-#if GTEST_LANG_CXX11
+#if GTEST_HAS_STD_FUNCTION_
 TEST(NotNullTest, StdFunction) {
   const Matcher<std::function<void()>> m = NotNull();
 
   EXPECT_TRUE(m.Matches([]{}));
   EXPECT_FALSE(m.Matches(std::function<void()>()));
 }
-#endif  // GTEST_LANG_CXX11
+#endif  // GTEST_HAS_STD_FUNCTION_
 
 // Tests that NotNull() describes itself properly.
 TEST(NotNullTest, CanDescribeSelf) {
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 141d457..378a20f 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -358,8 +358,9 @@
 # define GTEST_HAS_STD_FUNCTION_ 1
 # define GTEST_HAS_STD_INITIALIZER_LIST_ 1
 # define GTEST_HAS_STD_MOVE_ 1
-# define GTEST_HAS_STD_UNIQUE_PTR_ 1
 # define GTEST_HAS_STD_SHARED_PTR_ 1
+# define GTEST_HAS_STD_TYPE_TRAITS_ 1
+# define GTEST_HAS_STD_UNIQUE_PTR_ 1
 #endif
 
 // C++11 specifies that <tuple> provides std::tuple.
-- 
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