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-rw-r--r--dviware/dvisvgm/tests/gtest/include/gtest/internal/gtest-port.h334
1 files changed, 246 insertions, 88 deletions
diff --git a/dviware/dvisvgm/tests/gtest/include/gtest/internal/gtest-port.h b/dviware/dvisvgm/tests/gtest/include/gtest/internal/gtest-port.h
index 063fcb1083..0953a781c0 100644
--- a/dviware/dvisvgm/tests/gtest/include/gtest/internal/gtest-port.h
+++ b/dviware/dvisvgm/tests/gtest/include/gtest/internal/gtest-port.h
@@ -40,8 +40,8 @@
// GOOGLETEST_CM0001 DO NOT DELETE
-#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
-#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
+#ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
+#define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
// Environment-describing macros
// -----------------------------
@@ -190,13 +190,27 @@
// GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
// GTEST_ATTRIBUTE_UNUSED_ - declares that a class' instances or a
// variable don't have to be used.
-// GTEST_DISALLOW_ASSIGN_ - disables operator=.
+// GTEST_DISALLOW_ASSIGN_ - disables copy operator=.
// GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
+// GTEST_DISALLOW_MOVE_ASSIGN_ - disables move operator=.
+// GTEST_DISALLOW_MOVE_AND_ASSIGN_ - disables move ctor and operator=.
// GTEST_MUST_USE_RESULT_ - declares that a function's result must be used.
// GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is
// suppressed (constant conditional).
// GTEST_INTENTIONAL_CONST_COND_POP_ - finish code section where MSVC C4127
// is suppressed.
+// GTEST_INTERNAL_HAS_ANY - for enabling UniversalPrinter<std::any> or
+// UniversalPrinter<absl::any> specializations.
+// GTEST_INTERNAL_HAS_OPTIONAL - for enabling UniversalPrinter<std::optional>
+// or
+// UniversalPrinter<absl::optional>
+// specializations.
+// GTEST_INTERNAL_HAS_STRING_VIEW - for enabling Matcher<std::string_view> or
+// Matcher<absl::string_view>
+// specializations.
+// GTEST_INTERNAL_HAS_VARIANT - for enabling UniversalPrinter<std::variant> or
+// UniversalPrinter<absl::variant>
+// specializations.
//
// Synchronization:
// Mutex, MutexLock, ThreadLocal, GetThreadCount()
@@ -223,8 +237,7 @@
//
// Integer types:
// TypeWithSize - maps an integer to a int type.
-// Int32, UInt32, Int64, UInt64, TimeInMillis
-// - integers of known sizes.
+// TimeInMillis - integers of known sizes.
// BiggestInt - the biggest signed integer type.
//
// Command-line utilities:
@@ -235,7 +248,7 @@
// Environment variable utilities:
// GetEnv() - gets the value of an environment variable.
// BoolFromGTestEnv() - parses a bool environment variable.
-// Int32FromGTestEnv() - parses an Int32 environment variable.
+// Int32FromGTestEnv() - parses an int32_t environment variable.
// StringFromGTestEnv() - parses a string environment variable.
//
// Deprecation warnings:
@@ -248,7 +261,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <memory>
+
+#include <cerrno>
+#include <cstdint>
+#include <limits>
#include <type_traits>
#ifndef _WIN32_WCE
@@ -261,16 +277,15 @@
# include <TargetConditionals.h>
#endif
-#include <algorithm> // NOLINT
-#include <iostream> // NOLINT
-#include <sstream> // NOLINT
-#include <string> // NOLINT
+#include <iostream> // NOLINT
+#include <locale>
+#include <memory>
+#include <string> // NOLINT
#include <tuple>
-#include <utility>
#include <vector> // NOLINT
-#include "gtest/internal/gtest-port-arch.h"
#include "gtest/internal/custom/gtest-port.h"
+#include "gtest/internal/gtest-port-arch.h"
#if !defined(GTEST_DEV_EMAIL_)
# define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com"
@@ -344,6 +359,10 @@ typedef struct _CRITICAL_SECTION GTEST_CRITICAL_SECTION;
// WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION.
typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
#endif
+#elif GTEST_OS_XTENSA
+#include <unistd.h>
+// Xtensa toolchains define strcasecmp in the string.h header instead of
+// strings.h. string.h is already included.
#else
// This assumes that non-Windows OSes provide unistd.h. For OSes where this
// is not the case, we need to include headers that provide the functions
@@ -364,7 +383,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
// On Android, <regex.h> is only available starting with Gingerbread.
# define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9)
# else
-# define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS)
+#define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS && !GTEST_OS_XTENSA)
# endif
#endif
@@ -441,15 +460,6 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
# endif // defined(_MSC_VER) || defined(__BORLANDC__)
#endif // GTEST_HAS_EXCEPTIONS
-#if !defined(GTEST_HAS_STD_STRING)
-// Even though we don't use this macro any longer, we keep it in case
-// some clients still depend on it.
-# define GTEST_HAS_STD_STRING 1
-#elif !GTEST_HAS_STD_STRING
-// The user told us that ::std::string isn't available.
-# error "::std::string isn't available."
-#endif // !defined(GTEST_HAS_STD_STRING)
-
#ifndef GTEST_HAS_STD_WSTRING
// The user didn't tell us whether ::std::wstring is available, so we need
// to figure it out.
@@ -458,7 +468,7 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
// no support for it at least as recent as Froyo (2.2).
#define GTEST_HAS_STD_WSTRING \
(!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
- GTEST_OS_HAIKU))
+ GTEST_OS_HAIKU || GTEST_OS_ESP32 || GTEST_OS_ESP8266 || GTEST_OS_XTENSA))
#endif // GTEST_HAS_STD_WSTRING
@@ -582,7 +592,8 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
#ifndef GTEST_HAS_STREAM_REDIRECTION
// By default, we assume that stream redirection is supported on all
// platforms except known mobile ones.
-# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+ GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_XTENSA
# define GTEST_HAS_STREAM_REDIRECTION 0
# else
# define GTEST_HAS_STREAM_REDIRECTION 1
@@ -676,16 +687,27 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
#endif
-// A macro to disallow operator=
+// A macro to disallow copy operator=
// This should be used in the private: declarations for a class.
#define GTEST_DISALLOW_ASSIGN_(type) \
- void operator=(type const &) = delete
+ type& operator=(type const &) = delete
// A macro to disallow copy constructor and operator=
// This should be used in the private: declarations for a class.
#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type) \
- type(type const &) = delete; \
- GTEST_DISALLOW_ASSIGN_(type)
+ type(type const&) = delete; \
+ type& operator=(type const&) = delete
+
+// A macro to disallow move operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_MOVE_ASSIGN_(type) \
+ type& operator=(type &&) noexcept = delete
+
+// A macro to disallow move constructor and operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_MOVE_AND_ASSIGN_(type) \
+ type(type&&) noexcept = delete; \
+ type& operator=(type&&) noexcept = delete
// Tell the compiler to warn about unused return values for functions declared
// with this macro. The macro should be used on function declarations
@@ -856,9 +878,6 @@ class Secret;
// expression is false, compiler will issue an error containing this identifier.
#define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)
-// Evaluates to the number of elements in 'array'.
-#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0]))
-
// A helper for suppressing warnings on constant condition. It just
// returns 'condition'.
GTEST_API_ bool IsTrue(bool condition);
@@ -915,8 +934,6 @@ class GTEST_API_ RE {
const char* full_pattern_; // For FullMatch();
# endif
-
- GTEST_DISALLOW_ASSIGN_(RE);
};
#endif // GTEST_USES_PCRE
@@ -1599,7 +1616,7 @@ class ThreadLocal : public ThreadLocalBase {
class DefaultValueHolderFactory : public ValueHolderFactory {
public:
DefaultValueHolderFactory() {}
- virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+ ValueHolder* MakeNewHolder() const override { return new ValueHolder(); }
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
@@ -1608,7 +1625,7 @@ class ThreadLocal : public ThreadLocalBase {
class InstanceValueHolderFactory : public ValueHolderFactory {
public:
explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
- virtual ValueHolder* MakeNewHolder() const {
+ ValueHolder* MakeNewHolder() const override {
return new ValueHolder(value_);
}
@@ -1808,7 +1825,7 @@ class GTEST_API_ ThreadLocal {
class DefaultValueHolderFactory : public ValueHolderFactory {
public:
DefaultValueHolderFactory() {}
- virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+ ValueHolder* MakeNewHolder() const override { return new ValueHolder(); }
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
@@ -1817,7 +1834,7 @@ class GTEST_API_ ThreadLocal {
class InstanceValueHolderFactory : public ValueHolderFactory {
public:
explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
- virtual ValueHolder* MakeNewHolder() const {
+ ValueHolder* MakeNewHolder() const override {
return new ValueHolder(value_);
}
@@ -1887,18 +1904,12 @@ class GTEST_API_ ThreadLocal {
// we cannot detect it.
GTEST_API_ size_t GetThreadCount();
-template <bool B>
-using bool_constant = std::integral_constant<bool, B>;
-
#if GTEST_OS_WINDOWS
# define GTEST_PATH_SEP_ "\\"
# define GTEST_HAS_ALT_PATH_SEP_ 1
-// The biggest signed integer type the compiler supports.
-typedef __int64 BiggestInt;
#else
# define GTEST_PATH_SEP_ "/"
# define GTEST_HAS_ALT_PATH_SEP_ 0
-typedef long long BiggestInt; // NOLINT
#endif // GTEST_OS_WINDOWS
// Utilities for char.
@@ -1929,6 +1940,19 @@ inline bool IsUpper(char ch) {
inline bool IsXDigit(char ch) {
return isxdigit(static_cast<unsigned char>(ch)) != 0;
}
+#ifdef __cpp_char8_t
+inline bool IsXDigit(char8_t ch) {
+ return isxdigit(static_cast<unsigned char>(ch)) != 0;
+}
+#endif
+inline bool IsXDigit(char16_t ch) {
+ const unsigned char low_byte = static_cast<unsigned char>(ch);
+ return ch == low_byte && isxdigit(low_byte) != 0;
+}
+inline bool IsXDigit(char32_t ch) {
+ const unsigned char low_byte = static_cast<unsigned char>(ch);
+ return ch == low_byte && isxdigit(low_byte) != 0;
+}
inline bool IsXDigit(wchar_t ch) {
const unsigned char low_byte = static_cast<unsigned char>(ch);
return ch == low_byte && isxdigit(low_byte) != 0;
@@ -1963,16 +1987,16 @@ namespace posix {
typedef struct _stat StatStruct;
# ifdef __BORLANDC__
-inline int IsATTY(int fd) { return isatty(fd); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
inline int StrCaseCmp(const char* s1, const char* s2) {
return stricmp(s1, s2);
}
inline char* StrDup(const char* src) { return strdup(src); }
# else // !__BORLANDC__
# if GTEST_OS_WINDOWS_MOBILE
-inline int IsATTY(int /* fd */) { return 0; }
+inline int DoIsATTY(int /* fd */) { return 0; }
# else
-inline int IsATTY(int fd) { return _isatty(fd); }
+inline int DoIsATTY(int fd) { return _isatty(fd); }
# endif // GTEST_OS_WINDOWS_MOBILE
inline int StrCaseCmp(const char* s1, const char* s2) {
return _stricmp(s1, s2);
@@ -1993,12 +2017,28 @@ inline bool IsDir(const StatStruct& st) {
}
# endif // GTEST_OS_WINDOWS_MOBILE
+#elif GTEST_OS_ESP8266
+typedef struct stat StatStruct;
+
+inline int FileNo(FILE* file) { return fileno(file); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
+inline int Stat(const char* path, StatStruct* buf) {
+ // stat function not implemented on ESP8266
+ return 0;
+}
+inline int StrCaseCmp(const char* s1, const char* s2) {
+ return strcasecmp(s1, s2);
+}
+inline char* StrDup(const char* src) { return strdup(src); }
+inline int RmDir(const char* dir) { return rmdir(dir); }
+inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
+
#else
typedef struct stat StatStruct;
inline int FileNo(FILE* file) { return fileno(file); }
-inline int IsATTY(int fd) { return isatty(fd); }
+inline int DoIsATTY(int fd) { return isatty(fd); }
inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
inline int StrCaseCmp(const char* s1, const char* s2) {
return strcasecmp(s1, s2);
@@ -2009,23 +2049,39 @@ inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
#endif // GTEST_OS_WINDOWS
+inline int IsATTY(int fd) {
+ // DoIsATTY might change errno (for example ENOTTY in case you redirect stdout
+ // to a file on Linux), which is unexpected, so save the previous value, and
+ // restore it after the call.
+ int savedErrno = errno;
+ int isAttyValue = DoIsATTY(fd);
+ errno = savedErrno;
+
+ return isAttyValue;
+}
+
// Functions deprecated by MSVC 8.0.
GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
-inline const char* StrNCpy(char* dest, const char* src, size_t n) {
- return strncpy(dest, src, n);
-}
-
// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
// StrError() aren't needed on Windows CE at this time and thus not
// defined there.
-#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && \
+ !GTEST_OS_WINDOWS_RT && !GTEST_OS_ESP8266 && !GTEST_OS_XTENSA
inline int ChDir(const char* dir) { return chdir(dir); }
#endif
inline FILE* FOpen(const char* path, const char* mode) {
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
+ struct wchar_codecvt : public std::codecvt<wchar_t, char, std::mbstate_t> {};
+ std::wstring_convert<wchar_codecvt> converter;
+ std::wstring wide_path = converter.from_bytes(path);
+ std::wstring wide_mode = converter.from_bytes(mode);
+ return _wfopen(wide_path.c_str(), wide_mode.c_str());
+#else // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
return fopen(path, mode);
+#endif // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
}
#if !GTEST_OS_WINDOWS_MOBILE
inline FILE *FReopen(const char* path, const char* mode, FILE* stream) {
@@ -2045,8 +2101,9 @@ inline int Close(int fd) { return close(fd); }
inline const char* StrError(int errnum) { return strerror(errnum); }
#endif
inline const char* GetEnv(const char* name) {
-#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
- // We are on Windows CE, which has no environment variables.
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+ GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_XTENSA
+ // We are on an embedded platform, which has no environment variables.
static_cast<void>(name); // To prevent 'unused argument' warning.
return nullptr;
#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
@@ -2088,15 +2145,13 @@ GTEST_DISABLE_MSC_DEPRECATED_POP_()
# define GTEST_SNPRINTF_ snprintf
#endif
-// The maximum number a BiggestInt can represent. This definition
-// works no matter BiggestInt is represented in one's complement or
-// two's complement.
+// The biggest signed integer type the compiler supports.
//
-// We cannot rely on numeric_limits in STL, as __int64 and long long
-// are not part of standard C++ and numeric_limits doesn't need to be
-// defined for them.
-const BiggestInt kMaxBiggestInt =
- ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));
+// long long is guaranteed to be at least 64-bits in C++11.
+using BiggestInt = long long; // NOLINT
+
+// The maximum number a BiggestInt can represent.
+constexpr BiggestInt kMaxBiggestInt = (std::numeric_limits<BiggestInt>::max)();
// This template class serves as a compile-time function from size to
// type. It maps a size in bytes to a primitive type with that
@@ -2121,40 +2176,27 @@ class TypeWithSize {
public:
// This prevents the user from using TypeWithSize<N> with incorrect
// values of N.
- typedef void UInt;
+ using UInt = void;
};
// The specialization for size 4.
template <>
class TypeWithSize<4> {
public:
- // unsigned int has size 4 in both gcc and MSVC.
- //
- // As base/basictypes.h doesn't compile on Windows, we cannot use
- // uint32, uint64, and etc here.
- typedef int Int;
- typedef unsigned int UInt;
+ using Int = std::int32_t;
+ using UInt = std::uint32_t;
};
// The specialization for size 8.
template <>
class TypeWithSize<8> {
public:
-#if GTEST_OS_WINDOWS
- typedef __int64 Int;
- typedef unsigned __int64 UInt;
-#else
- typedef long long Int; // NOLINT
- typedef unsigned long long UInt; // NOLINT
-#endif // GTEST_OS_WINDOWS
+ using Int = std::int64_t;
+ using UInt = std::uint64_t;
};
// Integer types of known sizes.
-typedef TypeWithSize<4>::Int Int32;
-typedef TypeWithSize<4>::UInt UInt32;
-typedef TypeWithSize<8>::Int Int64;
-typedef TypeWithSize<8>::UInt UInt64;
-typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
+using TimeInMillis = int64_t; // Represents time in milliseconds.
// Utilities for command line flags and environment variables.
@@ -2173,7 +2215,7 @@ typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
// Macros for declaring flags.
# define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
# define GTEST_DECLARE_int32_(name) \
- GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
+ GTEST_API_ extern std::int32_t GTEST_FLAG(name)
# define GTEST_DECLARE_string_(name) \
GTEST_API_ extern ::std::string GTEST_FLAG(name)
@@ -2181,7 +2223,7 @@ typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
# define GTEST_DEFINE_bool_(name, default_val, doc) \
GTEST_API_ bool GTEST_FLAG(name) = (default_val)
# define GTEST_DEFINE_int32_(name, default_val, doc) \
- GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
+ GTEST_API_ std::int32_t GTEST_FLAG(name) = (default_val)
# define GTEST_DEFINE_string_(name, default_val, doc) \
GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)
@@ -2196,12 +2238,13 @@ typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
// Parses 'str' for a 32-bit signed integer. If successful, writes the result
// to *value and returns true; otherwise leaves *value unchanged and returns
// false.
-bool ParseInt32(const Message& src_text, const char* str, Int32* value);
+GTEST_API_ bool ParseInt32(const Message& src_text, const char* str,
+ int32_t* value);
-// Parses a bool/Int32/string from the environment variable
+// Parses a bool/int32_t/string from the environment variable
// corresponding to the given Google Test flag.
bool BoolFromGTestEnv(const char* flag, bool default_val);
-GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
+GTEST_API_ int32_t Int32FromGTestEnv(const char* flag, int32_t default_val);
std::string OutputFlagAlsoCheckEnvVar();
const char* StringFromGTestEnv(const char* flag, const char* default_val);
@@ -2228,4 +2271,119 @@ const char* StringFromGTestEnv(const char* flag, const char* default_val);
#endif // !defined(GTEST_INTERNAL_DEPRECATED)
-#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
+#if GTEST_HAS_ABSL
+// Always use absl::any for UniversalPrinter<> specializations if googletest
+// is built with absl support.
+#define GTEST_INTERNAL_HAS_ANY 1
+#include "absl/types/any.h"
+namespace testing {
+namespace internal {
+using Any = ::absl::any;
+} // namespace internal
+} // namespace testing
+#else
+#ifdef __has_include
+#if __has_include(<any>) && __cplusplus >= 201703L
+// Otherwise for C++17 and higher use std::any for UniversalPrinter<>
+// specializations.
+#define GTEST_INTERNAL_HAS_ANY 1
+#include <any>
+namespace testing {
+namespace internal {
+using Any = ::std::any;
+} // namespace internal
+} // namespace testing
+// The case where absl is configured NOT to alias std::any is not
+// supported.
+#endif // __has_include(<any>) && __cplusplus >= 201703L
+#endif // __has_include
+#endif // GTEST_HAS_ABSL
+
+#if GTEST_HAS_ABSL
+// Always use absl::optional for UniversalPrinter<> specializations if
+// googletest is built with absl support.
+#define GTEST_INTERNAL_HAS_OPTIONAL 1
+#include "absl/types/optional.h"
+namespace testing {
+namespace internal {
+template <typename T>
+using Optional = ::absl::optional<T>;
+} // namespace internal
+} // namespace testing
+#else
+#ifdef __has_include
+#if __has_include(<optional>) && __cplusplus >= 201703L
+// Otherwise for C++17 and higher use std::optional for UniversalPrinter<>
+// specializations.
+#define GTEST_INTERNAL_HAS_OPTIONAL 1
+#include <optional>
+namespace testing {
+namespace internal {
+template <typename T>
+using Optional = ::std::optional<T>;
+} // namespace internal
+} // namespace testing
+// The case where absl is configured NOT to alias std::optional is not
+// supported.
+#endif // __has_include(<optional>) && __cplusplus >= 201703L
+#endif // __has_include
+#endif // GTEST_HAS_ABSL
+
+#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
+
+#if GTEST_HAS_ABSL
+// Always use absl::variant for UniversalPrinter<> specializations if googletest
+// is built with absl support.
+#define GTEST_INTERNAL_HAS_VARIANT 1
+#include "absl/types/variant.h"
+namespace testing {
+namespace internal {
+template <typename... T>
+using Variant = ::absl::variant<T...>;
+} // namespace internal
+} // namespace testing
+#else
+#ifdef __has_include
+#if __has_include(<variant>) && __cplusplus >= 201703L
+// Otherwise for C++17 and higher use std::variant for UniversalPrinter<>
+// specializations.
+#define GTEST_INTERNAL_HAS_VARIANT 1
+#include <variant>
+namespace testing {
+namespace internal {
+template <typename... T>
+using Variant = ::std::variant<T...>;
+} // namespace internal
+} // namespace testing
+// The case where absl is configured NOT to alias std::variant is not supported.
+#endif // __has_include(<variant>) && __cplusplus >= 201703L
+#endif // __has_include
+#endif // GTEST_HAS_ABSL
+
+#endif // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_