1 files changed, 31 insertions, 0 deletions
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 0543da54..60ff4716 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -199,6 +199,9 @@
 //                                        suppressed (constant conditional).
 //   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
 //                                        is suppressed.
+//   GTEST_INTERNAL_HAS_STRING_VIEW - for enabling Matcher<std::string_view> or
+//                                    Matcher<absl::string_view>
+//                                    specializations.
 //
 // Synchronization:
 //   Mutex, MutexLock, ThreadLocal, GetThreadCount()
@@ -2220,4 +2223,32 @@ const char* StringFromGTestEnv(const char* flag, const char* default_val);
 
 #endif  // !defined(GTEST_INTERNAL_DEPRECATED)
 
+#if GTEST_HAS_ABSL
+// Always use absl::string_view for Matcher<> specializations if googletest
+// is built with absl support.
+# define GTEST_INTERNAL_HAS_STRING_VIEW 1
+#include "absl/strings/string_view.h"
+namespace testing {
+namespace internal {
+using StringView = ::absl::string_view;
+}  // namespace internal
+}  // namespace testing
+#else
+# ifdef __has_include
+#   if __has_include(<string_view>) && __cplusplus >= 201703L
+// Otherwise for C++17 and higher use std::string_view for Matcher<>
+// specializations.
+#   define GTEST_INTERNAL_HAS_STRING_VIEW 1
+#include <string_view>
+namespace testing {
+namespace internal {
+using StringView = ::std::string_view;
+}  // namespace internal
+}  // namespace testing
+// The case where absl is configured NOT to alias std::string_view is not
+// supported.
+#  endif  // __has_include(<string_view>) && __cplusplus >= 201703L
+# endif  // __has_include
+#endif  // GTEST_HAS_ABSL
+
 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_