Moves the universal printer from gmock to gtest and refactors the cmake script for reusing in gmock (by Vlad Losev).
This commit is contained in:
zhanyong.wan
730
include/gtest/gtest-printers.h
Normal file
730
include/gtest/gtest-printers.h
Normal file
@@ -0,0 +1,730 @@
|
||||
// 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);
|
||||
|
||||
// TypeWithoutFormatter<T, kIsProto>::PrintValue(value, os) is called
|
||||
// by the universal printer to print a value of type T when neither
|
||||
// operator<< nor PrintTo() is defined for type T. When T is
|
||||
// ProtocolMessage, proto2::Message, or a subclass of those, kIsProto
|
||||
// will be true and the short debug string of the protocol message
|
||||
// value will be printed; otherwise kIsProto will be false and the
|
||||
// bytes in the value will be printed.
|
||||
template <typename T, bool kIsProto>
|
||||
class TypeWithoutFormatter {
|
||||
public:
|
||||
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, true> {
|
||||
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());
|
||||
::std::operator<<(*os, "<" + pretty_str + ">");
|
||||
}
|
||||
};
|
||||
|
||||
// Prints the given value to the given ostream. If the value is a
|
||||
// protocol message, its short debug string is printed; 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 no << operator.
|
||||
//
|
||||
// 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, ::testing::internal::IsAProtocolMessage<T>::value>::
|
||||
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 {
|
||||
// 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 PrintCharTo(char c, int char_code, ::std::ostream* os);
|
||||
inline void PrintTo(unsigned char c, ::std::ostream* os) {
|
||||
PrintCharTo(c, c, os);
|
||||
}
|
||||
inline void PrintTo(signed char c, ::std::ostream* os) {
|
||||
PrintCharTo(c, c, 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(implicit_cast<const char*>(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(implicit_cast<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) {
|
||||
UniversalPrinter<T>::Print(a[0], os);
|
||||
for (size_t i = 1; i != count; i++) {
|
||||
*os << ", ";
|
||||
UniversalPrinter<T>::Print(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 << '(';
|
||||
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.
|
||||
UniversalPrinter<T>::Print(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) {
|
||||
UniversalPrinter<T>::Print(value, os);
|
||||
}
|
||||
inline void UniversalTersePrint(const char* str, ::std::ostream* os) {
|
||||
if (str == NULL) {
|
||||
*os << "NULL";
|
||||
} else {
|
||||
UniversalPrinter<string>::Print(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*) {}
|
||||
};
|
||||
template <>
|
||||
template <typename Tuple>
|
||||
void TuplePrefixPrinter<1>::PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
|
||||
UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
|
||||
Print(::std::tr1::get<0>(t), os);
|
||||
}
|
||||
|
||||
// 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_
|
||||
@@ -59,6 +59,7 @@
|
||||
#include <gtest/gtest-death-test.h>
|
||||
#include <gtest/gtest-message.h>
|
||||
#include <gtest/gtest-param-test.h>
|
||||
#include <gtest/gtest-printers.h>
|
||||
#include <gtest/gtest_prod.h>
|
||||
#include <gtest/gtest-test-part.h>
|
||||
#include <gtest/gtest-typed-test.h>
|
||||
@@ -1926,17 +1927,6 @@ GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
|
||||
::testing::internal::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
|
||||
__FILE__, __LINE__, ::testing::Message() << (message))
|
||||
|
||||
namespace internal {
|
||||
|
||||
// This template is declared, but intentionally undefined.
|
||||
template <typename T1, typename T2>
|
||||
struct StaticAssertTypeEqHelper;
|
||||
|
||||
template <typename T>
|
||||
struct StaticAssertTypeEqHelper<T, T> {};
|
||||
|
||||
} // namespace internal
|
||||
|
||||
// Compile-time assertion for type equality.
|
||||
// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are
|
||||
// the same type. The value it returns is not interesting.
|
||||
@@ -1969,7 +1959,7 @@ struct StaticAssertTypeEqHelper<T, T> {};
|
||||
// to cause a compiler error.
|
||||
template <typename T1, typename T2>
|
||||
bool StaticAssertTypeEq() {
|
||||
(void)internal::StaticAssertTypeEqHelper<T1, T2>();
|
||||
internal::StaticAssertTypeEqHelper<T1, T2>();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
@@ -97,6 +97,9 @@ inline void GTestStreamToHelper(std::ostream* os, const T& val) {
|
||||
*os << val;
|
||||
}
|
||||
|
||||
class ProtocolMessage;
|
||||
namespace proto2 { class Message; }
|
||||
|
||||
namespace testing {
|
||||
|
||||
// Forward declaration of classes.
|
||||
@@ -784,6 +787,292 @@ class GTEST_API_ Random {
|
||||
GTEST_DISALLOW_COPY_AND_ASSIGN_(Random);
|
||||
};
|
||||
|
||||
// Defining a variable of type CompileAssertTypesEqual<T1, T2> will cause a
|
||||
// compiler error iff T1 and T2 are different types.
|
||||
template <typename T1, typename T2>
|
||||
struct CompileAssertTypesEqual;
|
||||
|
||||
template <typename T>
|
||||
struct CompileAssertTypesEqual<T, T> {
|
||||
};
|
||||
|
||||
// Removes the reference from a type if it is a reference type,
|
||||
// otherwise leaves it unchanged. This is the same as
|
||||
// tr1::remove_reference, which is not widely available yet.
|
||||
template <typename T>
|
||||
struct RemoveReference { typedef T type; }; // NOLINT
|
||||
template <typename T>
|
||||
struct RemoveReference<T&> { typedef T type; }; // NOLINT
|
||||
|
||||
// A handy wrapper around RemoveReference that works when the argument
|
||||
// T depends on template parameters.
|
||||
#define GTEST_REMOVE_REFERENCE_(T) \
|
||||
typename ::testing::internal::RemoveReference<T>::type
|
||||
|
||||
// Removes const from a type if it is a const type, otherwise leaves
|
||||
// it unchanged. This is the same as tr1::remove_const, which is not
|
||||
// widely available yet.
|
||||
template <typename T>
|
||||
struct RemoveConst { typedef T type; }; // NOLINT
|
||||
template <typename T>
|
||||
struct RemoveConst<const T> { typedef T type; }; // NOLINT
|
||||
|
||||
// MSVC 8.0 has a bug which causes the above definition to fail to
|
||||
// remove the const in 'const int[3]'. The following specialization
|
||||
// works around the bug. However, it causes trouble with gcc and thus
|
||||
// needs to be conditionally compiled.
|
||||
#ifdef _MSC_VER
|
||||
template <typename T, size_t N>
|
||||
struct RemoveConst<T[N]> {
|
||||
typedef typename RemoveConst<T>::type type[N];
|
||||
};
|
||||
#endif // _MSC_VER
|
||||
|
||||
// A handy wrapper around RemoveConst that works when the argument
|
||||
// T depends on template parameters.
|
||||
#define GTEST_REMOVE_CONST_(T) \
|
||||
typename ::testing::internal::RemoveConst<T>::type
|
||||
|
||||
// Adds reference to a type if it is not a reference type,
|
||||
// otherwise leaves it unchanged. This is the same as
|
||||
// tr1::add_reference, which is not widely available yet.
|
||||
template <typename T>
|
||||
struct AddReference { typedef T& type; }; // NOLINT
|
||||
template <typename T>
|
||||
struct AddReference<T&> { typedef T& type; }; // NOLINT
|
||||
|
||||
// A handy wrapper around AddReference that works when the argument T
|
||||
// depends on template parameters.
|
||||
#define GTEST_ADD_REFERENCE_(T) \
|
||||
typename ::testing::internal::AddReference<T>::type
|
||||
|
||||
// Adds a reference to const on top of T as necessary. For example,
|
||||
// it transforms
|
||||
//
|
||||
// char ==> const char&
|
||||
// const char ==> const char&
|
||||
// char& ==> const char&
|
||||
// const char& ==> const char&
|
||||
//
|
||||
// The argument T must depend on some template parameters.
|
||||
#define GTEST_REFERENCE_TO_CONST_(T) \
|
||||
GTEST_ADD_REFERENCE_(const GTEST_REMOVE_REFERENCE_(T))
|
||||
|
||||
// ImplicitlyConvertible<From, To>::value is a compile-time bool
|
||||
// constant that's true iff type From can be implicitly converted to
|
||||
// type To.
|
||||
template <typename From, typename To>
|
||||
class ImplicitlyConvertible {
|
||||
private:
|
||||
// We need the following helper functions only for their types.
|
||||
// They have no implementations.
|
||||
|
||||
// MakeFrom() is an expression whose type is From. We cannot simply
|
||||
// use From(), as the type From may not have a public default
|
||||
// constructor.
|
||||
static From MakeFrom();
|
||||
|
||||
// These two functions are overloaded. Given an expression
|
||||
// Helper(x), the compiler will pick the first version if x can be
|
||||
// implicitly converted to type To; otherwise it will pick the
|
||||
// second version.
|
||||
//
|
||||
// The first version returns a value of size 1, and the second
|
||||
// version returns a value of size 2. Therefore, by checking the
|
||||
// size of Helper(x), which can be done at compile time, we can tell
|
||||
// which version of Helper() is used, and hence whether x can be
|
||||
// implicitly converted to type To.
|
||||
static char Helper(To);
|
||||
static char (&Helper(...))[2]; // NOLINT
|
||||
|
||||
// We have to put the 'public' section after the 'private' section,
|
||||
// or MSVC refuses to compile the code.
|
||||
public:
|
||||
// MSVC warns about implicitly converting from double to int for
|
||||
// possible loss of data, so we need to temporarily disable the
|
||||
// warning.
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning(push) // Saves the current warning state.
|
||||
#pragma warning(disable:4244) // Temporarily disables warning 4244.
|
||||
static const bool value =
|
||||
sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1;
|
||||
#pragma warning(pop) // Restores the warning state.
|
||||
#else
|
||||
static const bool value =
|
||||
sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1;
|
||||
#endif // _MSV_VER
|
||||
};
|
||||
template <typename From, typename To>
|
||||
const bool ImplicitlyConvertible<From, To>::value;
|
||||
|
||||
// IsAProtocolMessage<T>::value is a compile-time bool constant that's
|
||||
// true iff T is type ProtocolMessage, proto2::Message, or a subclass
|
||||
// of those.
|
||||
template <typename T>
|
||||
struct IsAProtocolMessage
|
||||
: public bool_constant<
|
||||
ImplicitlyConvertible<const T*, const ::ProtocolMessage*>::value ||
|
||||
ImplicitlyConvertible<const T*, const ::proto2::Message*>::value> {
|
||||
};
|
||||
|
||||
// When the compiler sees expression IsContainerTest<C>(0), the first
|
||||
// overload of IsContainerTest will be picked if C is an STL-style
|
||||
// container class (since C::const_iterator* is a valid type and 0 can
|
||||
// be converted to it), while the second overload will be picked
|
||||
// otherwise (since C::const_iterator will be an invalid type in this
|
||||
// case). Therefore, we can determine whether C is a container class
|
||||
// by checking the type of IsContainerTest<C>(0). The value of the
|
||||
// expression is insignificant.
|
||||
typedef int IsContainer;
|
||||
template <class C>
|
||||
IsContainer IsContainerTest(typename C::const_iterator*) { return 0; }
|
||||
|
||||
typedef char IsNotContainer;
|
||||
template <class C>
|
||||
IsNotContainer IsContainerTest(...) { return '\0'; }
|
||||
|
||||
// Utilities for native arrays.
|
||||
|
||||
// ArrayEq() compares two k-dimensional native arrays using the
|
||||
// elements' operator==, where k can be any integer >= 0. When k is
|
||||
// 0, ArrayEq() degenerates into comparing a single pair of values.
|
||||
|
||||
template <typename T, typename U>
|
||||
bool ArrayEq(const T* lhs, size_t size, const U* rhs);
|
||||
|
||||
// This generic version is used when k is 0.
|
||||
template <typename T, typename U>
|
||||
inline bool ArrayEq(const T& lhs, const U& rhs) { return lhs == rhs; }
|
||||
|
||||
// This overload is used when k >= 1.
|
||||
template <typename T, typename U, size_t N>
|
||||
inline bool ArrayEq(const T(&lhs)[N], const U(&rhs)[N]) {
|
||||
return internal::ArrayEq(lhs, N, rhs);
|
||||
}
|
||||
|
||||
// This helper reduces code bloat. If we instead put its logic inside
|
||||
// the previous ArrayEq() function, arrays with different sizes would
|
||||
// lead to different copies of the template code.
|
||||
template <typename T, typename U>
|
||||
bool ArrayEq(const T* lhs, size_t size, const U* rhs) {
|
||||
for (size_t i = 0; i != size; i++) {
|
||||
if (!internal::ArrayEq(lhs[i], rhs[i]))
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// Finds the first element in the iterator range [begin, end) that
|
||||
// equals elem. Element may be a native array type itself.
|
||||
template <typename Iter, typename Element>
|
||||
Iter ArrayAwareFind(Iter begin, Iter end, const Element& elem) {
|
||||
for (Iter it = begin; it != end; ++it) {
|
||||
if (internal::ArrayEq(*it, elem))
|
||||
return it;
|
||||
}
|
||||
return end;
|
||||
}
|
||||
|
||||
// CopyArray() copies a k-dimensional native array using the elements'
|
||||
// operator=, where k can be any integer >= 0. When k is 0,
|
||||
// CopyArray() degenerates into copying a single value.
|
||||
|
||||
template <typename T, typename U>
|
||||
void CopyArray(const T* from, size_t size, U* to);
|
||||
|
||||
// This generic version is used when k is 0.
|
||||
template <typename T, typename U>
|
||||
inline void CopyArray(const T& from, U* to) { *to = from; }
|
||||
|
||||
// This overload is used when k >= 1.
|
||||
template <typename T, typename U, size_t N>
|
||||
inline void CopyArray(const T(&from)[N], U(*to)[N]) {
|
||||
internal::CopyArray(from, N, *to);
|
||||
}
|
||||
|
||||
// This helper reduces code bloat. If we instead put its logic inside
|
||||
// the previous CopyArray() function, arrays with different sizes
|
||||
// would lead to different copies of the template code.
|
||||
template <typename T, typename U>
|
||||
void CopyArray(const T* from, size_t size, U* to) {
|
||||
for (size_t i = 0; i != size; i++) {
|
||||
internal::CopyArray(from[i], to + i);
|
||||
}
|
||||
}
|
||||
|
||||
// The relation between an NativeArray object (see below) and the
|
||||
// native array it represents.
|
||||
enum RelationToSource {
|
||||
kReference, // The NativeArray references the native array.
|
||||
kCopy // The NativeArray makes a copy of the native array and
|
||||
// owns the copy.
|
||||
};
|
||||
|
||||
// Adapts a native array to a read-only STL-style container. Instead
|
||||
// of the complete STL container concept, this adaptor only implements
|
||||
// members useful for Google Mock's container matchers. New members
|
||||
// should be added as needed. To simplify the implementation, we only
|
||||
// support Element being a raw type (i.e. having no top-level const or
|
||||
// reference modifier). It's the client's responsibility to satisfy
|
||||
// this requirement. Element can be an array type itself (hence
|
||||
// multi-dimensional arrays are supported).
|
||||
template <typename Element>
|
||||
class NativeArray {
|
||||
public:
|
||||
// STL-style container typedefs.
|
||||
typedef Element value_type;
|
||||
typedef const Element* const_iterator;
|
||||
|
||||
// Constructs from a native array.
|
||||
NativeArray(const Element* array, size_t count, RelationToSource relation) {
|
||||
Init(array, count, relation);
|
||||
}
|
||||
|
||||
// Copy constructor.
|
||||
NativeArray(const NativeArray& rhs) {
|
||||
Init(rhs.array_, rhs.size_, rhs.relation_to_source_);
|
||||
}
|
||||
|
||||
~NativeArray() {
|
||||
// Ensures that the user doesn't instantiate NativeArray with a
|
||||
// const or reference type.
|
||||
static_cast<void>(StaticAssertTypeEqHelper<Element,
|
||||
GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(Element))>());
|
||||
if (relation_to_source_ == kCopy)
|
||||
delete[] array_;
|
||||
}
|
||||
|
||||
// STL-style container methods.
|
||||
size_t size() const { return size_; }
|
||||
const_iterator begin() const { return array_; }
|
||||
const_iterator end() const { return array_ + size_; }
|
||||
bool operator==(const NativeArray& rhs) const {
|
||||
return size() == rhs.size() &&
|
||||
ArrayEq(begin(), size(), rhs.begin());
|
||||
}
|
||||
|
||||
private:
|
||||
// Initializes this object; makes a copy of the input array if
|
||||
// 'relation' is kCopy.
|
||||
void Init(const Element* array, size_t a_size, RelationToSource relation) {
|
||||
if (relation == kReference) {
|
||||
array_ = array;
|
||||
} else {
|
||||
Element* const copy = new Element[a_size];
|
||||
CopyArray(array, a_size, copy);
|
||||
array_ = copy;
|
||||
}
|
||||
size_ = a_size;
|
||||
relation_to_source_ = relation;
|
||||
}
|
||||
|
||||
const Element* array_;
|
||||
size_t size_;
|
||||
RelationToSource relation_to_source_;
|
||||
|
||||
GTEST_DISALLOW_ASSIGN_(NativeArray);
|
||||
};
|
||||
|
||||
} // namespace internal
|
||||
} // namespace testing
|
||||
|
||||
|
||||
@@ -609,6 +609,91 @@ namespace internal {
|
||||
|
||||
class String;
|
||||
|
||||
// The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time
|
||||
// expression is true. For example, you could use it to verify the
|
||||
// size of a static array:
|
||||
//
|
||||
// GTEST_COMPILE_ASSERT_(ARRAYSIZE(content_type_names) == CONTENT_NUM_TYPES,
|
||||
// content_type_names_incorrect_size);
|
||||
//
|
||||
// or to make sure a struct is smaller than a certain size:
|
||||
//
|
||||
// GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large);
|
||||
//
|
||||
// The second argument to the macro is the name of the variable. If
|
||||
// the expression is false, most compilers will issue a warning/error
|
||||
// containing the name of the variable.
|
||||
|
||||
template <bool>
|
||||
struct CompileAssert {
|
||||
};
|
||||
|
||||
#define GTEST_COMPILE_ASSERT_(expr, msg) \
|
||||
typedef ::testing::internal::CompileAssert<(bool(expr))> \
|
||||
msg[bool(expr) ? 1 : -1]
|
||||
|
||||
// Implementation details of GTEST_COMPILE_ASSERT_:
|
||||
//
|
||||
// - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1
|
||||
// elements (and thus is invalid) when the expression is false.
|
||||
//
|
||||
// - The simpler definition
|
||||
//
|
||||
// #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1]
|
||||
//
|
||||
// does not work, as gcc supports variable-length arrays whose sizes
|
||||
// are determined at run-time (this is gcc's extension and not part
|
||||
// of the C++ standard). As a result, gcc fails to reject the
|
||||
// following code with the simple definition:
|
||||
//
|
||||
// int foo;
|
||||
// GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is
|
||||
// // not a compile-time constant.
|
||||
//
|
||||
// - By using the type CompileAssert<(bool(expr))>, we ensures that
|
||||
// expr is a compile-time constant. (Template arguments must be
|
||||
// determined at compile-time.)
|
||||
//
|
||||
// - The outter parentheses in CompileAssert<(bool(expr))> are necessary
|
||||
// to work around a bug in gcc 3.4.4 and 4.0.1. If we had written
|
||||
//
|
||||
// CompileAssert<bool(expr)>
|
||||
//
|
||||
// instead, these compilers will refuse to compile
|
||||
//
|
||||
// GTEST_COMPILE_ASSERT_(5 > 0, some_message);
|
||||
//
|
||||
// (They seem to think the ">" in "5 > 0" marks the end of the
|
||||
// template argument list.)
|
||||
//
|
||||
// - The array size is (bool(expr) ? 1 : -1), instead of simply
|
||||
//
|
||||
// ((expr) ? 1 : -1).
|
||||
//
|
||||
// This is to avoid running into a bug in MS VC 7.1, which
|
||||
// causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1.
|
||||
|
||||
// StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h.
|
||||
//
|
||||
// This template is declared, but intentionally undefined.
|
||||
template <typename T1, typename T2>
|
||||
struct StaticAssertTypeEqHelper;
|
||||
|
||||
template <typename T>
|
||||
struct StaticAssertTypeEqHelper<T, T> {};
|
||||
|
||||
#if GTEST_HAS_GLOBAL_STRING
|
||||
typedef ::string string;
|
||||
#else
|
||||
typedef ::std::string string;
|
||||
#endif // GTEST_HAS_GLOBAL_STRING
|
||||
|
||||
#if GTEST_HAS_GLOBAL_WSTRING
|
||||
typedef ::wstring wstring;
|
||||
#elif GTEST_HAS_STD_WSTRING
|
||||
typedef ::std::wstring wstring;
|
||||
#endif // GTEST_HAS_GLOBAL_WSTRING
|
||||
|
||||
typedef ::std::stringstream StrStream;
|
||||
|
||||
// A helper for suppressing warnings on constant condition. It just
|
||||
@@ -790,6 +875,58 @@ inline void FlushInfoLog() { fflush(NULL); }
|
||||
|
||||
// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
|
||||
//
|
||||
// Use implicit_cast as a safe version of static_cast for upcasting in
|
||||
// the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a
|
||||
// const Foo*). When you use implicit_cast, the compiler checks that
|
||||
// the cast is safe. Such explicit implicit_casts are necessary in
|
||||
// surprisingly many situations where C++ demands an exact type match
|
||||
// instead of an argument type convertable to a target type.
|
||||
//
|
||||
// The syntax for using implicit_cast is the same as for static_cast:
|
||||
//
|
||||
// implicit_cast<ToType>(expr)
|
||||
//
|
||||
// implicit_cast would have been part of the C++ standard library,
|
||||
// but the proposal was submitted too late. It will probably make
|
||||
// its way into the language in the future.
|
||||
template<typename To>
|
||||
inline To implicit_cast(To x) { return x; }
|
||||
|
||||
// When you upcast (that is, cast a pointer from type Foo to type
|
||||
// SuperclassOfFoo), it's fine to use implicit_cast<>, since upcasts
|
||||
// always succeed. When you downcast (that is, cast a pointer from
|
||||
// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
|
||||
// how do you know the pointer is really of type SubclassOfFoo? It
|
||||
// could be a bare Foo, or of type DifferentSubclassOfFoo. Thus,
|
||||
// when you downcast, you should use this macro. In debug mode, we
|
||||
// use dynamic_cast<> to double-check the downcast is legal (we die
|
||||
// if it's not). In normal mode, we do the efficient static_cast<>
|
||||
// instead. Thus, it's important to test in debug mode to make sure
|
||||
// the cast is legal!
|
||||
// This is the only place in the code we should use dynamic_cast<>.
|
||||
// In particular, you SHOULDN'T be using dynamic_cast<> in order to
|
||||
// do RTTI (eg code like this:
|
||||
// if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
|
||||
// if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
|
||||
// You should design the code some other way not to need this.
|
||||
template<typename To, typename From> // use like this: down_cast<T*>(foo);
|
||||
inline To down_cast(From* f) { // so we only accept pointers
|
||||
// Ensures that To is a sub-type of From *. This test is here only
|
||||
// for compile-time type checking, and has no overhead in an
|
||||
// optimized build at run-time, as it will be optimized away
|
||||
// completely.
|
||||
if (false) {
|
||||
const To to = NULL;
|
||||
::testing::internal::implicit_cast<From*>(to);
|
||||
}
|
||||
|
||||
#if GTEST_HAS_RTTI
|
||||
// RTTI: debug mode only!
|
||||
GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL);
|
||||
#endif
|
||||
return static_cast<To>(f);
|
||||
}
|
||||
|
||||
// Downcasts the pointer of type Base to Derived.
|
||||
// Derived must be a subclass of Base. The parameter MUST
|
||||
// point to a class of type Derived, not any subclass of it.
|
||||
|
||||
Reference in New Issue
Block a user