--- /dev/null
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Test - The Google C++ Testing and Mocking Framework
+//
+// This file implements a universal value printer that can print a
+// value of any type T:
+//
+// void ::testing::internal::UniversalPrinter<T>::Print(value, ostream_ptr);
+//
+// A user can teach this function how to print a class type T by
+// defining either operator<<() or PrintTo() in the namespace that
+// defines T. More specifically, the FIRST defined function in the
+// following list will be used (assuming T is defined in namespace
+// foo):
+//
+// 1. foo::PrintTo(const T&, ostream*)
+// 2. operator<<(ostream&, const T&) defined in either foo or the
+// global namespace.
+//
+// However if T is an STL-style container then it is printed element-wise
+// unless foo::PrintTo(const T&, ostream*) is defined. Note that
+// operator<<() is ignored for container types.
+//
+// If none of the above is defined, it will print the debug string of
+// the value if it is a protocol buffer, or print the raw bytes in the
+// value otherwise.
+//
+// To aid debugging: when T is a reference type, the address of the
+// value is also printed; when T is a (const) char pointer, both the
+// pointer value and the NUL-terminated string it points to are
+// printed.
+//
+// We also provide some convenient wrappers:
+//
+// // Prints a value to a string. For a (const or not) char
+// // pointer, the NUL-terminated string (but not the pointer) is
+// // printed.
+// std::string ::testing::PrintToString(const T& value);
+//
+// // Prints a value tersely: for a reference type, the referenced
+// // value (but not the address) is printed; for a (const or not) char
+// // pointer, the NUL-terminated string (but not the pointer) is
+// // printed.
+// void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
+//
+// // Prints value using the type inferred by the compiler. The difference
+// // from UniversalTersePrint() is that this function prints both the
+// // pointer and the NUL-terminated string for a (const or not) char pointer.
+// void ::testing::internal::UniversalPrint(const T& value, ostream*);
+//
+// // Prints the fields of a tuple tersely to a string vector, one
+// // element for each field. Tuple support must be enabled in
+// // gtest-port.h.
+// std::vector<string> UniversalTersePrintTupleFieldsToStrings(
+// const Tuple& value);
+//
+// Known limitation:
+//
+// The print primitives print the elements of an STL-style container
+// using the compiler-inferred type of *iter where iter is a
+// const_iterator of the container. When const_iterator is an input
+// iterator but not a forward iterator, this inferred type may not
+// match value_type, and the print output may be incorrect. In
+// practice, this is rarely a problem as for most containers
+// const_iterator is a forward iterator. We'll fix this if there's an
+// actual need for it. Note that this fix cannot rely on value_type
+// being defined as many user-defined container types don't have
+// value_type.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
+
+#include <ostream> // NOLINT
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/gtest-internal.h"
+
+#if GTEST_HAS_STD_TUPLE_
+# include <tuple>
+#endif
+
+#if GTEST_HAS_ABSL
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "absl/types/variant.h"
+#endif // GTEST_HAS_ABSL
+
+namespace testing {
+
+// Definitions in the 'internal' and 'internal2' name spaces are
+// subject to change without notice. DO NOT USE THEM IN USER CODE!
+namespace internal2 {
+
+// Prints the given number of bytes in the given object to the given
+// ostream.
+GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
+ size_t count,
+ ::std::ostream* os);
+
+// For selecting which printer to use when a given type has neither <<
+// nor PrintTo().
+enum TypeKind {
+ kProtobuf, // a protobuf type
+ kConvertibleToInteger, // a type implicitly convertible to BiggestInt
+ // (e.g. a named or unnamed enum type)
+#if GTEST_HAS_ABSL
+ kConvertibleToStringView, // a type implicitly convertible to
+ // absl::string_view
+#endif
+ kOtherType // anything else
+};
+
+// TypeWithoutFormatter<T, kTypeKind>::PrintValue(value, os) is called
+// by the universal printer to print a value of type T when neither
+// operator<< nor PrintTo() is defined for T, where kTypeKind is the
+// "kind" of T as defined by enum TypeKind.
+template <typename T, TypeKind kTypeKind>
+class TypeWithoutFormatter {
+ public:
+ // This default version is called when kTypeKind is kOtherType.
+ static void PrintValue(const T& value, ::std::ostream* os) {
+ PrintBytesInObjectTo(static_cast<const unsigned char*>(
+ reinterpret_cast<const void*>(&value)),
+ sizeof(value), os);
+ }
+};
+
+// We print a protobuf using its ShortDebugString() when the string
+// doesn't exceed this many characters; otherwise we print it using
+// DebugString() for better readability.
+const size_t kProtobufOneLinerMaxLength = 50;
+
+template <typename T>
+class TypeWithoutFormatter<T, kProtobuf> {
+ public:
+ static void PrintValue(const T& value, ::std::ostream* os) {
+ std::string pretty_str = value.ShortDebugString();
+ if (pretty_str.length() > kProtobufOneLinerMaxLength) {
+ pretty_str = "\n" + value.DebugString();
+ }
+ *os << ("<" + pretty_str + ">");
+ }
+};
+
+template <typename T>
+class TypeWithoutFormatter<T, kConvertibleToInteger> {
+ public:
+ // Since T has no << operator or PrintTo() but can be implicitly
+ // converted to BiggestInt, we print it as a BiggestInt.
+ //
+ // Most likely T is an enum type (either named or unnamed), in which
+ // case printing it as an integer is the desired behavior. In case
+ // T is not an enum, printing it as an integer is the best we can do
+ // given that it has no user-defined printer.
+ static void PrintValue(const T& value, ::std::ostream* os) {
+ const internal::BiggestInt kBigInt = value;
+ *os << kBigInt;
+ }
+};
+
+#if GTEST_HAS_ABSL
+template <typename T>
+class TypeWithoutFormatter<T, kConvertibleToStringView> {
+ public:
+ // Since T has neither operator<< nor PrintTo() but can be implicitly
+ // converted to absl::string_view, we print it as a absl::string_view.
+ //
+ // Note: the implementation is further below, as it depends on
+ // internal::PrintTo symbol which is defined later in the file.
+ static void PrintValue(const T& value, ::std::ostream* os);
+};
+#endif
+
+// Prints the given value to the given ostream. If the value is a
+// protocol message, its debug string is printed; if it's an enum or
+// of a type implicitly convertible to BiggestInt, it's printed as an
+// integer; otherwise the bytes in the value are printed. This is
+// what UniversalPrinter<T>::Print() does when it knows nothing about
+// type T and T has neither << operator nor PrintTo().
+//
+// A user can override this behavior for a class type Foo by defining
+// a << operator in the namespace where Foo is defined.
+//
+// We put this operator in namespace 'internal2' instead of 'internal'
+// to simplify the implementation, as much code in 'internal' needs to
+// use << in STL, which would conflict with our own << were it defined
+// in 'internal'.
+//
+// Note that this operator<< takes a generic std::basic_ostream<Char,
+// CharTraits> type instead of the more restricted std::ostream. If
+// we define it to take an std::ostream instead, we'll get an
+// "ambiguous overloads" compiler error when trying to print a type
+// Foo that supports streaming to std::basic_ostream<Char,
+// CharTraits>, as the compiler cannot tell whether
+// operator<<(std::ostream&, const T&) or
+// operator<<(std::basic_stream<Char, CharTraits>, const Foo&) is more
+// specific.
+template <typename Char, typename CharTraits, typename T>
+::std::basic_ostream<Char, CharTraits>& operator<<(
+ ::std::basic_ostream<Char, CharTraits>& os, const T& x) {
+ TypeWithoutFormatter<T, (internal::IsAProtocolMessage<T>::value
+ ? kProtobuf
+ : internal::ImplicitlyConvertible<
+ const T&, internal::BiggestInt>::value
+ ? kConvertibleToInteger
+ :
+#if GTEST_HAS_ABSL
+ internal::ImplicitlyConvertible<
+ const T&, absl::string_view>::value
+ ? kConvertibleToStringView
+ :
+#endif
+ kOtherType)>::PrintValue(x, &os);
+ return os;
+}
+
+} // namespace internal2
+} // namespace testing
+
+// This namespace MUST NOT BE NESTED IN ::testing, or the name look-up
+// magic needed for implementing UniversalPrinter won't work.
+namespace testing_internal {
+
+// Used to print a value that is not an STL-style container when the
+// user doesn't define PrintTo() for it.
+template <typename T>
+void DefaultPrintNonContainerTo(const T& value, ::std::ostream* os) {
+ // With the following statement, during unqualified name lookup,
+ // testing::internal2::operator<< appears as if it was declared in
+ // the nearest enclosing namespace that contains both
+ // ::testing_internal and ::testing::internal2, i.e. the global
+ // namespace. For more details, refer to the C++ Standard section
+ // 7.3.4-1 [namespace.udir]. This allows us to fall back onto
+ // testing::internal2::operator<< in case T doesn't come with a <<
+ // operator.
+ //
+ // We cannot write 'using ::testing::internal2::operator<<;', which
+ // gcc 3.3 fails to compile due to a compiler bug.
+ using namespace ::testing::internal2; // NOLINT
+
+ // Assuming T is defined in namespace foo, in the next statement,
+ // the compiler will consider all of:
+ //
+ // 1. foo::operator<< (thanks to Koenig look-up),
+ // 2. ::operator<< (as the current namespace is enclosed in ::),
+ // 3. testing::internal2::operator<< (thanks to the using statement above).
+ //
+ // The operator<< whose type matches T best will be picked.
+ //
+ // We deliberately allow #2 to be a candidate, as sometimes it's
+ // impossible to define #1 (e.g. when foo is ::std, defining
+ // anything in it is undefined behavior unless you are a compiler
+ // vendor.).
+ *os << value;
+}
+
+} // namespace testing_internal
+
+namespace testing {
+namespace internal {
+
+// FormatForComparison<ToPrint, OtherOperand>::Format(value) formats a
+// value of type ToPrint that is an operand of a comparison assertion
+// (e.g. ASSERT_EQ). OtherOperand is the type of the other operand in
+// the comparison, and is used to help determine the best way to
+// format the value. In particular, when the value is a C string
+// (char pointer) and the other operand is an STL string object, we
+// want to format the C string as a string, since we know it is
+// compared by value with the string object. If the value is a char
+// pointer but the other operand is not an STL string object, we don't
+// know whether the pointer is supposed to point to a NUL-terminated
+// string, and thus want to print it as a pointer to be safe.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+
+// The default case.
+template <typename ToPrint, typename OtherOperand>
+class FormatForComparison {
+ public:
+ static ::std::string Format(const ToPrint& value) {
+ return ::testing::PrintToString(value);
+ }
+};
+
+// Array.
+template <typename ToPrint, size_t N, typename OtherOperand>
+class FormatForComparison<ToPrint[N], OtherOperand> {
+ public:
+ static ::std::string Format(const ToPrint* value) {
+ return FormatForComparison<const ToPrint*, OtherOperand>::Format(value);
+ }
+};
+
+// By default, print C string as pointers to be safe, as we don't know
+// whether they actually point to a NUL-terminated string.
+
+#define GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(CharType) \
+ template <typename OtherOperand> \
+ class FormatForComparison<CharType*, OtherOperand> { \
+ public: \
+ static ::std::string Format(CharType* value) { \
+ return ::testing::PrintToString(static_cast<const void*>(value)); \
+ } \
+ }
+
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(char);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(wchar_t);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t);
+
+#undef GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_
+
+// If a C string is compared with an STL string object, we know it's meant
+// to point to a NUL-terminated string, and thus can print it as a string.
+
+#define GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(CharType, OtherStringType) \
+ template <> \
+ class FormatForComparison<CharType*, OtherStringType> { \
+ public: \
+ static ::std::string Format(CharType* value) { \
+ return ::testing::PrintToString(value); \
+ } \
+ }
+
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);
+
+#if GTEST_HAS_GLOBAL_STRING
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::string);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::string);
+#endif
+
+#if GTEST_HAS_GLOBAL_WSTRING
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::wstring);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::wstring);
+#endif
+
+#if GTEST_HAS_STD_WSTRING
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring);
+#endif
+
+#undef GTEST_IMPL_FORMAT_C_STRING_AS_STRING_
+
+// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc)
+// operand to be used in a failure message. The type (but not value)
+// of the other operand may affect the format. This allows us to
+// print a char* as a raw pointer when it is compared against another
+// char* or void*, and print it as a C string when it is compared
+// against an std::string object, for example.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+template <typename T1, typename T2>
+std::string FormatForComparisonFailureMessage(
+ const T1& value, const T2& /* other_operand */) {
+ return FormatForComparison<T1, T2>::Format(value);
+}
+
+// UniversalPrinter<T>::Print(value, ostream_ptr) prints the given
+// value to the given ostream. The caller must ensure that
+// 'ostream_ptr' is not NULL, or the behavior is undefined.
+//
+// We define UniversalPrinter as a class template (as opposed to a
+// function template), as we need to partially specialize it for
+// reference types, which cannot be done with function templates.
+template <typename T>
+class UniversalPrinter;
+
+template <typename T>
+void UniversalPrint(const T& value, ::std::ostream* os);
+
+enum DefaultPrinterType {
+ kPrintContainer,
+ kPrintPointer,
+ kPrintFunctionPointer,
+ kPrintOther,
+};
+template <DefaultPrinterType type> struct WrapPrinterType {};
+
+// Used to print an STL-style container when the user doesn't define
+// a PrintTo() for it.
+template <typename C>
+void DefaultPrintTo(WrapPrinterType<kPrintContainer> /* dummy */,
+ const C& container, ::std::ostream* os) {
+ const size_t kMaxCount = 32; // The maximum number of elements to print.
+ *os << '{';
+ size_t count = 0;
+ for (typename C::const_iterator it = container.begin();
+ it != container.end(); ++it, ++count) {
+ if (count > 0) {
+ *os << ',';
+ if (count == kMaxCount) { // Enough has been printed.
+ *os << " ...";
+ break;
+ }
+ }
+ *os << ' ';
+ // We cannot call PrintTo(*it, os) here as PrintTo() doesn't
+ // handle *it being a native array.
+ internal::UniversalPrint(*it, os);
+ }
+
+ if (count > 0) {
+ *os << ' ';
+ }
+ *os << '}';
+}
+
+// Used to print a pointer that is neither a char pointer nor a member
+// pointer, when the user doesn't define PrintTo() for it. (A member
+// variable pointer or member function pointer doesn't really point to
+// a location in the address space. Their representation is
+// implementation-defined. Therefore they will be printed as raw
+// bytes.)
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintPointer> /* dummy */,
+ T* p, ::std::ostream* os) {
+ if (p == NULL) {
+ *os << "NULL";
+ } else {
+ // T is not a function type. We just call << to print p,
+ // relying on ADL to pick up user-defined << for their pointer
+ // types, if any.
+ *os << p;
+ }
+}
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintFunctionPointer> /* dummy */,
+ T* p, ::std::ostream* os) {
+ if (p == NULL) {
+ *os << "NULL";
+ } else {
+ // T is a function type, so '*os << p' doesn't do what we want
+ // (it just prints p as bool). We want to print p as a const
+ // void*.
+ *os << reinterpret_cast<const void*>(p);
+ }
+}
+
+// Used to print a non-container, non-pointer value when the user
+// doesn't define PrintTo() for it.
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintOther> /* dummy */,
+ const T& value, ::std::ostream* os) {
+ ::testing_internal::DefaultPrintNonContainerTo(value, os);
+}
+
+// Prints the given value using the << operator if it has one;
+// otherwise prints the bytes in it. This is what
+// UniversalPrinter<T>::Print() does when PrintTo() is not specialized
+// or overloaded for type T.
+//
+// A user can override this behavior for a class type Foo by defining
+// an overload of PrintTo() in the namespace where Foo is defined. We
+// give the user this option as sometimes defining a << operator for
+// Foo is not desirable (e.g. the coding style may prevent doing it,
+// or there is already a << operator but it doesn't do what the user
+// wants).
+template <typename T>
+void PrintTo(const T& value, ::std::ostream* os) {
+ // DefaultPrintTo() is overloaded. The type of its first argument
+ // determines which version will be picked.
+ //
+ // Note that we check for container types here, prior to we check
+ // for protocol message types in our operator<<. The rationale is:
+ //
+ // For protocol messages, we want to give people a chance to
+ // override Google Mock's format by defining a PrintTo() or
+ // operator<<. For STL containers, other formats can be
+ // incompatible with Google Mock's format for the container
+ // elements; therefore we check for container types here to ensure
+ // that our format is used.
+ //
+ // Note that MSVC and clang-cl do allow an implicit conversion from
+ // pointer-to-function to pointer-to-object, but clang-cl warns on it.
+ // So don't use ImplicitlyConvertible if it can be helped since it will
+ // cause this warning, and use a separate overload of DefaultPrintTo for
+ // function pointers so that the `*os << p` in the object pointer overload
+ // doesn't cause that warning either.
+ DefaultPrintTo(
+ WrapPrinterType <
+ (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
+ !IsRecursiveContainer<T>::value
+ ? kPrintContainer
+ : !is_pointer<T>::value
+ ? kPrintOther
+#if GTEST_LANG_CXX11
+ : std::is_function<typename std::remove_pointer<T>::type>::value
+#else
+ : !internal::ImplicitlyConvertible<T, const void*>::value
+#endif
+ ? kPrintFunctionPointer
+ : kPrintPointer > (),
+ value, os);
+}
+
+// The following list of PrintTo() overloads tells
+// UniversalPrinter<T>::Print() how to print standard types (built-in
+// types, strings, plain arrays, and pointers).
+
+// Overloads for various char types.
+GTEST_API_ void PrintTo(unsigned char c, ::std::ostream* os);
+GTEST_API_ void PrintTo(signed char c, ::std::ostream* os);
+inline void PrintTo(char c, ::std::ostream* os) {
+ // When printing a plain char, we always treat it as unsigned. This
+ // way, the output won't be affected by whether the compiler thinks
+ // char is signed or not.
+ PrintTo(static_cast<unsigned char>(c), os);
+}
+
+// Overloads for other simple built-in types.
+inline void PrintTo(bool x, ::std::ostream* os) {
+ *os << (x ? "true" : "false");
+}
+
+// Overload for wchar_t type.
+// Prints a wchar_t as a symbol if it is printable or as its internal
+// code otherwise and also as its decimal code (except for L'\0').
+// The L'\0' char is printed as "L'\\0'". The decimal code is printed
+// as signed integer when wchar_t is implemented by the compiler
+// as a signed type and is printed as an unsigned integer when wchar_t
+// is implemented as an unsigned type.
+GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);
+
+// Overloads for C strings.
+GTEST_API_ void PrintTo(const char* s, ::std::ostream* os);
+inline void PrintTo(char* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const char*>(s), os);
+}
+
+// signed/unsigned char is often used for representing binary data, so
+// we print pointers to it as void* to be safe.
+inline void PrintTo(const signed char* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(signed char* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(const unsigned char* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(unsigned char* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const void*>(s), os);
+}
+
+// MSVC can be configured to define wchar_t as a typedef of unsigned
+// short. It defines _NATIVE_WCHAR_T_DEFINED when wchar_t is a native
+// type. When wchar_t is a typedef, defining an overload for const
+// wchar_t* would cause unsigned short* be printed as a wide string,
+// possibly causing invalid memory accesses.
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+// Overloads for wide C strings
+GTEST_API_ void PrintTo(const wchar_t* s, ::std::ostream* os);
+inline void PrintTo(wchar_t* s, ::std::ostream* os) {
+ PrintTo(ImplicitCast_<const wchar_t*>(s), os);
+}
+#endif
+
+// Overload for C arrays. Multi-dimensional arrays are printed
+// properly.
+
+// Prints the given number of elements in an array, without printing
+// the curly braces.
+template <typename T>
+void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
+ UniversalPrint(a[0], os);
+ for (size_t i = 1; i != count; i++) {
+ *os << ", ";
+ UniversalPrint(a[i], os);
+ }
+}
+
+// Overloads for ::string and ::std::string.
+#if GTEST_HAS_GLOBAL_STRING
+GTEST_API_ void PrintStringTo(const ::string&s, ::std::ostream* os);
+inline void PrintTo(const ::string& s, ::std::ostream* os) {
+ PrintStringTo(s, os);
+}
+#endif // GTEST_HAS_GLOBAL_STRING
+
+GTEST_API_ void PrintStringTo(const ::std::string&s, ::std::ostream* os);
+inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
+ PrintStringTo(s, os);
+}
+
+// Overloads for ::wstring and ::std::wstring.
+#if GTEST_HAS_GLOBAL_WSTRING
+GTEST_API_ void PrintWideStringTo(const ::wstring&s, ::std::ostream* os);
+inline void PrintTo(const ::wstring& s, ::std::ostream* os) {
+ PrintWideStringTo(s, os);
+}
+#endif // GTEST_HAS_GLOBAL_WSTRING
+
+#if GTEST_HAS_STD_WSTRING
+GTEST_API_ void PrintWideStringTo(const ::std::wstring&s, ::std::ostream* os);
+inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
+ PrintWideStringTo(s, os);
+}
+#endif // GTEST_HAS_STD_WSTRING
+
+#if GTEST_HAS_ABSL
+// Overload for absl::string_view.
+inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
+ PrintTo(::std::string(sp), os);
+}
+#endif // GTEST_HAS_ABSL
+
+#if GTEST_LANG_CXX11
+inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
+#endif // GTEST_LANG_CXX11
+
+#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
+// Helper function for printing a tuple. T must be instantiated with
+// a tuple type.
+template <typename T>
+void PrintTupleTo(const T& t, ::std::ostream* os);
+#endif // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
+
+#if GTEST_HAS_TR1_TUPLE
+// Overload for ::std::tr1::tuple. Needed for printing function arguments,
+// which are packed as tuples.
+
+// Overloaded PrintTo() for tuples of various arities. We support
+// tuples of up-to 10 fields. The following implementation works
+// regardless of whether tr1::tuple is implemented using the
+// non-standard variadic template feature or not.
+
+inline void PrintTo(const ::std::tr1::tuple<>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1>
+void PrintTo(const ::std::tr1::tuple<T1>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2>
+void PrintTo(const ::std::tr1::tuple<T1, T2>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6, typename T7>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6, typename T7, typename T8>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6, typename T7, typename T8, typename T9>
+void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6, typename T7, typename T8, typename T9, typename T10>
+void PrintTo(
+ const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& t,
+ ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+#endif // GTEST_HAS_TR1_TUPLE
+
+#if GTEST_HAS_STD_TUPLE_
+template <typename... Types>
+void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
+ PrintTupleTo(t, os);
+}
+#endif // GTEST_HAS_STD_TUPLE_
+
+// Overload for std::pair.
+template <typename T1, typename T2>
+void PrintTo(const ::std::pair<T1, T2>& value, ::std::ostream* os) {
+ *os << '(';
+ // We cannot use UniversalPrint(value.first, os) here, as T1 may be
+ // a reference type. The same for printing value.second.
+ UniversalPrinter<T1>::Print(value.first, os);
+ *os << ", ";
+ UniversalPrinter<T2>::Print(value.second, os);
+ *os << ')';
+}
+
+// Implements printing a non-reference type T by letting the compiler
+// pick the right overload of PrintTo() for T.
+template <typename T>
+class UniversalPrinter {
+ public:
+ // MSVC warns about adding const to a function type, so we want to
+ // disable the warning.
+ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)
+
+ // Note: we deliberately don't call this PrintTo(), as that name
+ // conflicts with ::testing::internal::PrintTo in the body of the
+ // function.
+ static void Print(const T& value, ::std::ostream* os) {
+ // By default, ::testing::internal::PrintTo() is used for printing
+ // the value.
+ //
+ // Thanks to Koenig look-up, if T is a class and has its own
+ // PrintTo() function defined in its namespace, that function will
+ // be visible here. Since it is more specific than the generic ones
+ // in ::testing::internal, it will be picked by the compiler in the
+ // following statement - exactly what we want.
+ PrintTo(value, os);
+ }
+
+ GTEST_DISABLE_MSC_WARNINGS_POP_()
+};
+
+#if GTEST_HAS_ABSL
+
+// Printer for absl::optional
+
+template <typename T>
+class UniversalPrinter<::absl::optional<T>> {
+ public:
+ static void Print(const ::absl::optional<T>& value, ::std::ostream* os) {
+ *os << '(';
+ if (!value) {
+ *os << "nullopt";
+ } else {
+ UniversalPrint(*value, os);
+ }
+ *os << ')';
+ }
+};
+
+// Printer for absl::variant
+
+template <typename... T>
+class UniversalPrinter<::absl::variant<T...>> {
+ public:
+ static void Print(const ::absl::variant<T...>& value, ::std::ostream* os) {
+ *os << '(';
+ absl::visit(Visitor{os}, value);
+ *os << ')';
+ }
+
+ private:
+ struct Visitor {
+ template <typename U>
+ void operator()(const U& u) const {
+ *os << "'" << GetTypeName<U>() << "' with value ";
+ UniversalPrint(u, os);
+ }
+ ::std::ostream* os;
+ };
+};
+
+#endif // GTEST_HAS_ABSL
+
+// UniversalPrintArray(begin, len, os) prints an array of 'len'
+// elements, starting at address 'begin'.
+template <typename T>
+void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
+ if (len == 0) {
+ *os << "{}";
+ } else {
+ *os << "{ ";
+ const size_t kThreshold = 18;
+ const size_t kChunkSize = 8;
+ // If the array has more than kThreshold elements, we'll have to
+ // omit some details by printing only the first and the last
+ // kChunkSize elements.
+ // FIXME: let the user control the threshold using a flag.
+ if (len <= kThreshold) {
+ PrintRawArrayTo(begin, len, os);
+ } else {
+ PrintRawArrayTo(begin, kChunkSize, os);
+ *os << ", ..., ";
+ PrintRawArrayTo(begin + len - kChunkSize, kChunkSize, os);
+ }
+ *os << " }";
+ }
+}
+// This overload prints a (const) char array compactly.
+GTEST_API_ void UniversalPrintArray(
+ const char* begin, size_t len, ::std::ostream* os);
+
+// This overload prints a (const) wchar_t array compactly.
+GTEST_API_ void UniversalPrintArray(
+ const wchar_t* begin, size_t len, ::std::ostream* os);
+
+// Implements printing an array type T[N].
+template <typename T, size_t N>
+class UniversalPrinter<T[N]> {
+ public:
+ // Prints the given array, omitting some elements when there are too
+ // many.
+ static void Print(const T (&a)[N], ::std::ostream* os) {
+ UniversalPrintArray(a, N, os);
+ }
+};
+
+// Implements printing a reference type T&.
+template <typename T>
+class UniversalPrinter<T&> {
+ public:
+ // MSVC warns about adding const to a function type, so we want to
+ // disable the warning.
+ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)
+
+ static void Print(const T& value, ::std::ostream* os) {
+ // Prints the address of the value. We use reinterpret_cast here
+ // as static_cast doesn't compile when T is a function type.
+ *os << "@" << reinterpret_cast<const void*>(&value) << " ";
+
+ // Then prints the value itself.
+ UniversalPrint(value, os);
+ }
+
+ GTEST_DISABLE_MSC_WARNINGS_POP_()
+};
+
+// Prints a value tersely: for a reference type, the referenced value
+// (but not the address) is printed; for a (const) char pointer, the
+// NUL-terminated string (but not the pointer) is printed.
+
+template <typename T>
+class UniversalTersePrinter {
+ public:
+ static void Print(const T& value, ::std::ostream* os) {
+ UniversalPrint(value, os);
+ }
+};
+template <typename T>
+class UniversalTersePrinter<T&> {
+ public:
+ static void Print(const T& value, ::std::ostream* os) {
+ UniversalPrint(value, os);
+ }
+};
+template <typename T, size_t N>
+class UniversalTersePrinter<T[N]> {
+ public:
+ static void Print(const T (&value)[N], ::std::ostream* os) {
+ UniversalPrinter<T[N]>::Print(value, os);
+ }
+};
+template <>
+class UniversalTersePrinter<const char*> {
+ public:
+ static void Print(const char* str, ::std::ostream* os) {
+ if (str == NULL) {
+ *os << "NULL";
+ } else {
+ UniversalPrint(std::string(str), os);
+ }
+ }
+};
+template <>
+class UniversalTersePrinter<char*> {
+ public:
+ static void Print(char* str, ::std::ostream* os) {
+ UniversalTersePrinter<const char*>::Print(str, os);
+ }
+};
+
+#if GTEST_HAS_STD_WSTRING
+template <>
+class UniversalTersePrinter<const wchar_t*> {
+ public:
+ static void Print(const wchar_t* str, ::std::ostream* os) {
+ if (str == NULL) {
+ *os << "NULL";
+ } else {
+ UniversalPrint(::std::wstring(str), os);
+ }
+ }
+};
+#endif
+
+template <>
+class UniversalTersePrinter<wchar_t*> {
+ public:
+ static void Print(wchar_t* str, ::std::ostream* os) {
+ UniversalTersePrinter<const wchar_t*>::Print(str, os);
+ }
+};
+
+template <typename T>
+void UniversalTersePrint(const T& value, ::std::ostream* os) {
+ UniversalTersePrinter<T>::Print(value, os);
+}
+
+// Prints a value using the type inferred by the compiler. The
+// difference between this and UniversalTersePrint() is that for a
+// (const) char pointer, this prints both the pointer and the
+// NUL-terminated string.
+template <typename T>
+void UniversalPrint(const T& value, ::std::ostream* os) {
+ // A workarond for the bug in VC++ 7.1 that prevents us from instantiating
+ // UniversalPrinter with T directly.
+ typedef T T1;
+ UniversalPrinter<T1>::Print(value, os);
+}
+
+typedef ::std::vector< ::std::string> Strings;
+
+// TuplePolicy<TupleT> must provide:
+// - tuple_size
+// size of tuple TupleT.
+// - get<size_t I>(const TupleT& t)
+// static function extracting element I of tuple TupleT.
+// - tuple_element<size_t I>::type
+// type of element I of tuple TupleT.
+template <typename TupleT>
+struct TuplePolicy;
+
+#if GTEST_HAS_TR1_TUPLE
+template <typename TupleT>
+struct TuplePolicy {
+ typedef TupleT Tuple;
+ static const size_t tuple_size = ::std::tr1::tuple_size<Tuple>::value;
+
+ template <size_t I>
+ struct tuple_element : ::std::tr1::tuple_element<static_cast<int>(I), Tuple> {
+ };
+
+ template <size_t I>
+ static typename AddReference<const typename ::std::tr1::tuple_element<
+ static_cast<int>(I), Tuple>::type>::type
+ get(const Tuple& tuple) {
+ return ::std::tr1::get<I>(tuple);
+ }
+};
+template <typename TupleT>
+const size_t TuplePolicy<TupleT>::tuple_size;
+#endif // GTEST_HAS_TR1_TUPLE
+
+#if GTEST_HAS_STD_TUPLE_
+template <typename... Types>
+struct TuplePolicy< ::std::tuple<Types...> > {
+ typedef ::std::tuple<Types...> Tuple;
+ static const size_t tuple_size = ::std::tuple_size<Tuple>::value;
+
+ template <size_t I>
+ struct tuple_element : ::std::tuple_element<I, Tuple> {};
+
+ template <size_t I>
+ static const typename ::std::tuple_element<I, Tuple>::type& get(
+ const Tuple& tuple) {
+ return ::std::get<I>(tuple);
+ }
+};
+template <typename... Types>
+const size_t TuplePolicy< ::std::tuple<Types...> >::tuple_size;
+#endif // GTEST_HAS_STD_TUPLE_
+
+#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
+// This helper template allows PrintTo() for tuples and
+// UniversalTersePrintTupleFieldsToStrings() to be defined by
+// induction on the number of tuple fields. The idea is that
+// TuplePrefixPrinter<N>::PrintPrefixTo(t, os) prints the first N
+// fields in tuple t, and can be defined in terms of
+// TuplePrefixPrinter<N - 1>.
+//
+// The inductive case.
+template <size_t N>
+struct TuplePrefixPrinter {
+ // Prints the first N fields of a tuple.
+ template <typename Tuple>
+ static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
+ TuplePrefixPrinter<N - 1>::PrintPrefixTo(t, os);
+ GTEST_INTENTIONAL_CONST_COND_PUSH_()
+ if (N > 1) {
+ GTEST_INTENTIONAL_CONST_COND_POP_()
+ *os << ", ";
+ }
+ UniversalPrinter<
+ typename TuplePolicy<Tuple>::template tuple_element<N - 1>::type>
+ ::Print(TuplePolicy<Tuple>::template get<N - 1>(t), os);
+ }
+
+ // Tersely prints the first N fields of a tuple to a string vector,
+ // one element for each field.
+ template <typename Tuple>
+ static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
+ TuplePrefixPrinter<N - 1>::TersePrintPrefixToStrings(t, strings);
+ ::std::stringstream ss;
+ UniversalTersePrint(TuplePolicy<Tuple>::template get<N - 1>(t), &ss);
+ strings->push_back(ss.str());
+ }
+};
+
+// Base case.
+template <>
+struct TuplePrefixPrinter<0> {
+ template <typename Tuple>
+ static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
+
+ template <typename Tuple>
+ static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
+};
+
+// Helper function for printing a tuple.
+// Tuple must be either std::tr1::tuple or std::tuple type.
+template <typename Tuple>
+void PrintTupleTo(const Tuple& t, ::std::ostream* os) {
+ *os << "(";
+ TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::PrintPrefixTo(t, os);
+ *os << ")";
+}
+
+// Prints the fields of a tuple tersely to a string vector, one
+// element for each field. See the comment before
+// UniversalTersePrint() for how we define "tersely".
+template <typename Tuple>
+Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
+ Strings result;
+ TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::
+ TersePrintPrefixToStrings(value, &result);
+ return result;
+}
+#endif // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
+
+} // namespace internal
+
+#if GTEST_HAS_ABSL
+namespace internal2 {
+template <typename T>
+void TypeWithoutFormatter<T, kConvertibleToStringView>::PrintValue(
+ const T& value, ::std::ostream* os) {
+ internal::PrintTo(absl::string_view(value), os);
+}
+} // namespace internal2
+#endif
+
+template <typename T>
+::std::string PrintToString(const T& value) {
+ ::std::stringstream ss;
+ internal::UniversalTersePrinter<T>::Print(value, &ss);
+ return ss.str();
+}
+
+} // namespace testing
+
+// Include any custom printer added by the local installation.
+// We must include this header at the end to make sure it can use the
+// declarations from this file.
+#include "gtest/internal/custom/gtest-printers.h"
+
+#endif // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
projects / quassel.git / blobdiff