Line endings fix?

1 files changed, 796 insertions, 796 deletions

diff --git a/gtest-1.6.0/include/gtest/gtest-printers.h b/gtest-1.6.0/include/gtest/gtest-printers.h
index 691426d..9cbab3f 100644
--- a/gtest-1.6.0/include/gtest/gtest-printers.h
+++ b/gtest-1.6.0/include/gtest/gtest-printers.h
@@ -1,796 +1,796 @@
-// 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.

-//

-// Author: wan@google.com (Zhanyong Wan)

-

-// Google Test - The Google C++ Testing 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.

-//

-// 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.

-

-#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"

-

-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)

-  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(reinterpret_cast<const unsigned char*>(&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) {

-    const ::testing::internal::string short_str = value.ShortDebugString();

-    const ::testing::internal::string pretty_str =

-        short_str.length() <= kProtobufOneLinerMaxLength ?

-        short_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;

-  }

-};

-

-// 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 : 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 {

-

-// 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);

-

-// Used to print an STL-style container when the user doesn't define

-// a PrintTo() for it.

-template <typename C>

-void DefaultPrintTo(IsContainer /* dummy */,

-                    false_type /* is not a pointer */,

-                    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(IsNotContainer /* dummy */,

-                    true_type /* is a pointer */,

-                    T* p, ::std::ostream* os) {

-  if (p == NULL) {

-    *os << "NULL";

-  } else {

-    // C++ doesn't allow casting from a function pointer to any object

-    // pointer.

-    //

-    // IsTrue() silences warnings: "Condition is always true",

-    // "unreachable code".

-    if (IsTrue(ImplicitlyConvertible<T*, const void*>::value)) {

-      // 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;

-    } 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*.  However, we cannot cast it to const void* directly,

-      // even using reinterpret_cast, as earlier versions of gcc

-      // (e.g. 3.4.5) cannot compile the cast when p is a function

-      // pointer.  Casting to UInt64 first solves the problem.

-      *os << reinterpret_cast<const void*>(

-          reinterpret_cast<internal::UInt64>(p));

-    }

-  }

-}

-

-// Used to print a non-container, non-pointer value when the user

-// doesn't define PrintTo() for it.

-template <typename T>

-void DefaultPrintTo(IsNotContainer /* dummy */,

-                    false_type /* is not a pointer */,

-                    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 two

-  // arguments determine which version will be picked.  If T is an

-  // STL-style container, the version for container will be called; if

-  // T is a pointer, the pointer version will be called; otherwise the

-  // generic version will be called.

-  //

-  // 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.

-  //

-  // The second argument of DefaultPrintTo() is needed to bypass a bug

-  // in Symbian's C++ compiler that prevents it from picking the right

-  // overload between:

-  //

-  //   PrintTo(const T& x, ...);

-  //   PrintTo(T* x, ...);

-  DefaultPrintTo(IsContainerTest<T>(0), is_pointer<T>(), 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_TR1_TUPLE

-// Overload for ::std::tr1::tuple.  Needed for printing function arguments,

-// which are packed as tuples.

-

-// 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);

-

-// 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

-

-// 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.

-#ifdef _MSC_VER

-# pragma warning(push)          // Saves the current warning state.

-# pragma warning(disable:4180)  // Temporarily disables warning 4180.

-#endif  // _MSC_VER

-

-  // 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);

-  }

-

-#ifdef _MSC_VER

-# pragma warning(pop)           // Restores the warning state.

-#endif  // _MSC_VER

-};

-

-// 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.

-    // TODO(wan@google.com): 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);

-

-// 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.

-#ifdef _MSC_VER

-# pragma warning(push)          // Saves the current warning state.

-# pragma warning(disable:4180)  // Temporarily disables warning 4180.

-#endif  // _MSC_VER

-

-  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);

-  }

-

-#ifdef _MSC_VER

-# pragma warning(pop)           // Restores the warning state.

-#endif  // _MSC_VER

-};

-

-// 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>

-void UniversalTersePrint(const T& value, ::std::ostream* os) {

-  UniversalPrint(value, os);

-}

-inline void UniversalTersePrint(const char* str, ::std::ostream* os) {

-  if (str == NULL) {

-    *os << "NULL";

-  } else {

-    UniversalPrint(string(str), os);

-  }

-}

-inline void UniversalTersePrint(char* str, ::std::ostream* os) {

-  UniversalTersePrint(static_cast<const char*>(str), 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) {

-  UniversalPrinter<T>::Print(value, os);

-}

-

-#if GTEST_HAS_TR1_TUPLE

-typedef ::std::vector<string> Strings;

-

-// 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);

-    *os << ", ";

-    UniversalPrinter<typename ::std::tr1::tuple_element<N - 1, Tuple>::type>

-        ::Print(::std::tr1::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(::std::tr1::get<N - 1>(t), &ss);

-    strings->push_back(ss.str());

-  }

-};

-

-// Base cases.

-template <>

-struct TuplePrefixPrinter<0> {

-  template <typename Tuple>

-  static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}

-

-  template <typename Tuple>

-  static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}

-};

-// We have to specialize the entire TuplePrefixPrinter<> class

-// template here, even though the definition of

-// TersePrintPrefixToStrings() is the same as the generic version, as

-// Embarcadero (formerly CodeGear, formerly Borland) C++ doesn't

-// support specializing a method template of a class template.

-template <>

-struct TuplePrefixPrinter<1> {

-  template <typename Tuple>

-  static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {

-    UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::

-        Print(::std::tr1::get<0>(t), os);

-  }

-

-  template <typename Tuple>

-  static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {

-    ::std::stringstream ss;

-    UniversalTersePrint(::std::tr1::get<0>(t), &ss);

-    strings->push_back(ss.str());

-  }

-};

-

-// 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) {

-  *os << "(";

-  TuplePrefixPrinter< ::std::tr1::tuple_size<T>::value>::

-      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< ::std::tr1::tuple_size<Tuple>::value>::

-      TersePrintPrefixToStrings(value, &result);

-  return result;

-}

-#endif  // GTEST_HAS_TR1_TUPLE

-

-}  // namespace internal

-

-template <typename T>

-::std::string PrintToString(const T& value) {

-  ::std::stringstream ss;

-  internal::UniversalTersePrint(value, &ss);

-  return ss.str();

-}

-

-}  // namespace testing

-

-#endif  // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_

+// 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.
+//
+// Author: wan@google.com (Zhanyong Wan)
+
+// Google Test - The Google C++ Testing 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.
+//
+// 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.
+
+#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"
+
+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)
+  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(reinterpret_cast<const unsigned char*>(&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) {
+    const ::testing::internal::string short_str = value.ShortDebugString();
+    const ::testing::internal::string pretty_str =
+        short_str.length() <= kProtobufOneLinerMaxLength ?
+        short_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;
+  }
+};
+
+// 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 : 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 {
+
+// 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);
+
+// Used to print an STL-style container when the user doesn't define
+// a PrintTo() for it.
+template <typename C>
+void DefaultPrintTo(IsContainer /* dummy */,
+                    false_type /* is not a pointer */,
+                    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(IsNotContainer /* dummy */,
+                    true_type /* is a pointer */,
+                    T* p, ::std::ostream* os) {
+  if (p == NULL) {
+    *os << "NULL";
+  } else {
+    // C++ doesn't allow casting from a function pointer to any object
+    // pointer.
+    //
+    // IsTrue() silences warnings: "Condition is always true",
+    // "unreachable code".
+    if (IsTrue(ImplicitlyConvertible<T*, const void*>::value)) {
+      // 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;
+    } 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*.  However, we cannot cast it to const void* directly,
+      // even using reinterpret_cast, as earlier versions of gcc
+      // (e.g. 3.4.5) cannot compile the cast when p is a function
+      // pointer.  Casting to UInt64 first solves the problem.
+      *os << reinterpret_cast<const void*>(
+          reinterpret_cast<internal::UInt64>(p));
+    }
+  }
+}
+
+// Used to print a non-container, non-pointer value when the user
+// doesn't define PrintTo() for it.
+template <typename T>
+void DefaultPrintTo(IsNotContainer /* dummy */,
+                    false_type /* is not a pointer */,
+                    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 two
+  // arguments determine which version will be picked.  If T is an
+  // STL-style container, the version for container will be called; if
+  // T is a pointer, the pointer version will be called; otherwise the
+  // generic version will be called.
+  //
+  // 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.
+  //
+  // The second argument of DefaultPrintTo() is needed to bypass a bug
+  // in Symbian's C++ compiler that prevents it from picking the right
+  // overload between:
+  //
+  //   PrintTo(const T& x, ...);
+  //   PrintTo(T* x, ...);
+  DefaultPrintTo(IsContainerTest<T>(0), is_pointer<T>(), 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_TR1_TUPLE
+// Overload for ::std::tr1::tuple.  Needed for printing function arguments,
+// which are packed as tuples.
+
+// 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);
+
+// 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
+
+// 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.
+#ifdef _MSC_VER
+# pragma warning(push)          // Saves the current warning state.
+# pragma warning(disable:4180)  // Temporarily disables warning 4180.
+#endif  // _MSC_VER
+
+  // 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);
+  }
+
+#ifdef _MSC_VER
+# pragma warning(pop)           // Restores the warning state.
+#endif  // _MSC_VER
+};
+
+// 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.
+    // TODO(wan@google.com): 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);
+
+// 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.
+#ifdef _MSC_VER
+# pragma warning(push)          // Saves the current warning state.
+# pragma warning(disable:4180)  // Temporarily disables warning 4180.
+#endif  // _MSC_VER
+
+  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);
+  }
+
+#ifdef _MSC_VER
+# pragma warning(pop)           // Restores the warning state.
+#endif  // _MSC_VER
+};
+
+// 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>
+void UniversalTersePrint(const T& value, ::std::ostream* os) {
+  UniversalPrint(value, os);
+}
+inline void UniversalTersePrint(const char* str, ::std::ostream* os) {
+  if (str == NULL) {
+    *os << "NULL";
+  } else {
+    UniversalPrint(string(str), os);
+  }
+}
+inline void UniversalTersePrint(char* str, ::std::ostream* os) {
+  UniversalTersePrint(static_cast<const char*>(str), 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) {
+  UniversalPrinter<T>::Print(value, os);
+}
+
+#if GTEST_HAS_TR1_TUPLE
+typedef ::std::vector<string> Strings;
+
+// 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);
+    *os << ", ";
+    UniversalPrinter<typename ::std::tr1::tuple_element<N - 1, Tuple>::type>
+        ::Print(::std::tr1::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(::std::tr1::get<N - 1>(t), &ss);
+    strings->push_back(ss.str());
+  }
+};
+
+// Base cases.
+template <>
+struct TuplePrefixPrinter<0> {
+  template <typename Tuple>
+  static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
+
+  template <typename Tuple>
+  static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
+};
+// We have to specialize the entire TuplePrefixPrinter<> class
+// template here, even though the definition of
+// TersePrintPrefixToStrings() is the same as the generic version, as
+// Embarcadero (formerly CodeGear, formerly Borland) C++ doesn't
+// support specializing a method template of a class template.
+template <>
+struct TuplePrefixPrinter<1> {
+  template <typename Tuple>
+  static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
+    UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
+        Print(::std::tr1::get<0>(t), os);
+  }
+
+  template <typename Tuple>
+  static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
+    ::std::stringstream ss;
+    UniversalTersePrint(::std::tr1::get<0>(t), &ss);
+    strings->push_back(ss.str());
+  }
+};
+
+// 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) {
+  *os << "(";
+  TuplePrefixPrinter< ::std::tr1::tuple_size<T>::value>::
+      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< ::std::tr1::tuple_size<Tuple>::value>::
+      TersePrintPrefixToStrings(value, &result);
+  return result;
+}
+#endif  // GTEST_HAS_TR1_TUPLE
+
+}  // namespace internal
+
+template <typename T>
+::std::string PrintToString(const T& value) {
+  ::std::stringstream ss;
+  internal::UniversalTersePrint(value, &ss);
+  return ss.str();
+}
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_