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Added a README.LLVM file to indicate which files and directories were removed from the original source tarball. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61526 91177308-0d34-0410-b5e6-96231b3b80d8
225 lines
8.0 KiB
C++
225 lines
8.0 KiB
C++
// Copyright 2005, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: wan@google.com (Zhanyong Wan)
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//
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// The Google C++ Testing Framework (Google Test)
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//
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// This header file defines the Message class.
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//
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// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
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// leave some internal implementation details in this header file.
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// They are clearly marked by comments like this:
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//
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// // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
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//
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// Such code is NOT meant to be used by a user directly, and is subject
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// to CHANGE WITHOUT NOTICE. Therefore DO NOT DEPEND ON IT in a user
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// program!
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#ifndef GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
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#define GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
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#include <gtest/internal/gtest-string.h>
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#include <gtest/internal/gtest-internal.h>
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namespace testing {
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// The Message class works like an ostream repeater.
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//
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// Typical usage:
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//
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// 1. You stream a bunch of values to a Message object.
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// It will remember the text in a StrStream.
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// 2. Then you stream the Message object to an ostream.
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// This causes the text in the Message to be streamed
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// to the ostream.
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//
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// For example;
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//
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// testing::Message foo;
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// foo << 1 << " != " << 2;
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// std::cout << foo;
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//
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// will print "1 != 2".
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//
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// Message is not intended to be inherited from. In particular, its
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// destructor is not virtual.
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//
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// Note that StrStream behaves differently in gcc and in MSVC. You
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// can stream a NULL char pointer to it in the former, but not in the
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// latter (it causes an access violation if you do). The Message
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// class hides this difference by treating a NULL char pointer as
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// "(null)".
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class Message {
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private:
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// The type of basic IO manipulators (endl, ends, and flush) for
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// narrow streams.
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typedef std::ostream& (*BasicNarrowIoManip)(std::ostream&);
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public:
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// Constructs an empty Message.
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// We allocate the StrStream separately because it otherwise each use of
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// ASSERT/EXPECT in a procedure adds over 200 bytes to the procedure's
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// stack frame leading to huge stack frames in some cases; gcc does not reuse
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// the stack space.
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Message() : ss_(new internal::StrStream) {}
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// Copy constructor.
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Message(const Message& msg) : ss_(new internal::StrStream) { // NOLINT
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*ss_ << msg.GetString();
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}
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// Constructs a Message from a C-string.
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explicit Message(const char* str) : ss_(new internal::StrStream) {
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*ss_ << str;
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}
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~Message() { delete ss_; }
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#ifdef GTEST_OS_SYMBIAN
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// Streams a value (either a pointer or not) to this object.
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template <typename T>
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inline Message& operator <<(const T& value) {
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StreamHelper(typename internal::is_pointer<T>::type(), value);
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return *this;
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}
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#else
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// Streams a non-pointer value to this object.
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template <typename T>
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inline Message& operator <<(const T& val) {
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::GTestStreamToHelper(ss_, val);
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return *this;
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}
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// Streams a pointer value to this object.
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//
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// This function is an overload of the previous one. When you
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// stream a pointer to a Message, this definition will be used as it
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// is more specialized. (The C++ Standard, section
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// [temp.func.order].) If you stream a non-pointer, then the
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// previous definition will be used.
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//
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// The reason for this overload is that streaming a NULL pointer to
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// ostream is undefined behavior. Depending on the compiler, you
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// may get "0", "(nil)", "(null)", or an access violation. To
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// ensure consistent result across compilers, we always treat NULL
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// as "(null)".
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template <typename T>
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inline Message& operator <<(T* const& pointer) { // NOLINT
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if (pointer == NULL) {
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*ss_ << "(null)";
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} else {
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::GTestStreamToHelper(ss_, pointer);
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}
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return *this;
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}
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#endif // GTEST_OS_SYMBIAN
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// Since the basic IO manipulators are overloaded for both narrow
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// and wide streams, we have to provide this specialized definition
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// of operator <<, even though its body is the same as the
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// templatized version above. Without this definition, streaming
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// endl or other basic IO manipulators to Message will confuse the
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// compiler.
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Message& operator <<(BasicNarrowIoManip val) {
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*ss_ << val;
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return *this;
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}
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// Instead of 1/0, we want to see true/false for bool values.
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Message& operator <<(bool b) {
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return *this << (b ? "true" : "false");
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}
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// These two overloads allow streaming a wide C string to a Message
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// using the UTF-8 encoding.
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Message& operator <<(const wchar_t* wide_c_str) {
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return *this << internal::String::ShowWideCString(wide_c_str);
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}
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Message& operator <<(wchar_t* wide_c_str) {
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return *this << internal::String::ShowWideCString(wide_c_str);
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}
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#if GTEST_HAS_STD_WSTRING
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// Converts the given wide string to a narrow string using the UTF-8
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// encoding, and streams the result to this Message object.
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Message& operator <<(const ::std::wstring& wstr);
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#endif // GTEST_HAS_STD_WSTRING
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#if GTEST_HAS_GLOBAL_WSTRING
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// Converts the given wide string to a narrow string using the UTF-8
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// encoding, and streams the result to this Message object.
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Message& operator <<(const ::wstring& wstr);
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#endif // GTEST_HAS_GLOBAL_WSTRING
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// Gets the text streamed to this object so far as a String.
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// Each '\0' character in the buffer is replaced with "\\0".
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//
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// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
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internal::String GetString() const {
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return internal::StrStreamToString(ss_);
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}
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private:
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#ifdef GTEST_OS_SYMBIAN
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// These are needed as the Nokia Symbian Compiler cannot decide between
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// const T& and const T* in a function template. The Nokia compiler _can_
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// decide between class template specializations for T and T*, so a
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// tr1::type_traits-like is_pointer works, and we can overload on that.
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template <typename T>
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inline void StreamHelper(internal::true_type dummy, T* pointer) {
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if (pointer == NULL) {
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*ss_ << "(null)";
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} else {
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::GTestStreamToHelper(ss_, pointer);
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}
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}
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template <typename T>
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inline void StreamHelper(internal::false_type dummy, const T& value) {
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::GTestStreamToHelper(ss_, value);
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}
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#endif // GTEST_OS_SYMBIAN
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// We'll hold the text streamed to this object here.
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internal::StrStream* const ss_;
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// We declare (but don't implement) this to prevent the compiler
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// from implementing the assignment operator.
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void operator=(const Message&);
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};
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// Streams a Message to an ostream.
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inline std::ostream& operator <<(std::ostream& os, const Message& sb) {
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return os << sb.GetString();
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}
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} // namespace testing
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#endif // GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
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