227 lines
11 KiB
C++
227 lines
11 KiB
C++
// RUN: %check_clang_tidy %s performance-avoid-endl %t
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namespace std {
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template <typename CharT>
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class basic_ostream {
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public:
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template <typename T>
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basic_ostream& operator<<(T);
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basic_ostream& operator<<(basic_ostream<CharT>& (*)(basic_ostream<CharT>&));
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};
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template <typename CharT>
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class basic_iostream : public basic_ostream<CharT> {};
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using ostream = basic_ostream<char>;
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using wostream = basic_ostream<wchar_t>;
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using iostream = basic_iostream<char>;
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using wiostream = basic_iostream<wchar_t>;
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ostream cout;
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wostream wcout;
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ostream cerr;
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wostream wcerr;
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ostream clog;
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wostream wclog;
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template<typename CharT>
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basic_ostream<CharT>& endl(basic_ostream<CharT>&);
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} // namespace std
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void good() {
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std::cout << "Hello" << '\n';
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std::cout << "World\n";
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std::wcout << "Hello" << '\n';
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std::wcout << "World\n";
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std::cerr << "Hello" << '\n';
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std::cerr << "World\n";
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std::wcerr << "Hello" << '\n';
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std::wcerr << "World\n";
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std::clog << "Hello" << '\n';
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std::clog << "World\n";
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std::wclog << "Hello" << '\n';
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std::wclog << "World\n";
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}
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void bad() {
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std::cout << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cout << "World" << '\n';
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std::wcout << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcout << "World" << '\n';
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std::cerr << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cerr << "World" << '\n';
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std::wcerr << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcerr << "World" << '\n';
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std::clog << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::clog << "World" << '\n';
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std::wclog << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wclog << "World" << '\n';
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}
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void bad_single_argument() {
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std::cout << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cout << '\n';
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std::wcout << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:17: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcout << '\n';
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std::cerr << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cerr << '\n';
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std::wcerr << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:17: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcerr << '\n';
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std::clog << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::clog << '\n';
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std::wclog << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:17: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wclog << '\n';
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}
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void bad_multiple() {
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std::cout << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:51: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cout << "Hello" << '\n' << "World" << '\n';
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std::wcout << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:52: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcout << "Hello" << '\n' << "World" << '\n';
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std::cerr << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:51: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cerr << "Hello" << '\n' << "World" << '\n';
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std::wcerr << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:52: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcerr << "Hello" << '\n' << "World" << '\n';
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std::clog << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:51: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::clog << "Hello" << '\n' << "World" << '\n';
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std::wclog << "Hello" << std::endl << "World" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-MESSAGES: :[[@LINE-2]]:52: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wclog << "Hello" << '\n' << "World" << '\n';
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}
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void bad_function_call() {
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std::endl(std::cout);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cout << '\n';
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std::endl(std::cout << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cout << "Hi" << '\n';
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std::endl(std::wcout);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcout << '\n';
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std::endl(std::wcout << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcout << "Hi" << '\n';
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std::endl(std::cerr);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cerr << '\n';
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std::endl(std::cerr << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::cerr << "Hi" << '\n';
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std::endl(std::wcerr);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcerr << '\n';
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std::endl(std::wcerr << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wcerr << "Hi" << '\n';
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std::endl(std::clog);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::clog << '\n';
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std::endl(std::clog << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::clog << "Hi" << '\n';
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std::endl(std::wclog);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wclog << '\n';
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std::endl(std::wclog << "Hi");
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: std::wclog << "Hi" << '\n';
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}
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void bad_user_stream() {
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std::iostream my_iostream;
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std::wiostream my_wiostream;
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std::ostream my_ostream;
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std::wostream my_wostream;
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my_iostream << "Hi" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:26: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_iostream << "Hi" << '\n';
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my_wiostream << "Hi" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_wiostream << "Hi" << '\n';
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my_ostream << "Hi" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:25: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_ostream << "Hi" << '\n';
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my_wostream << "Hi" << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:26: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_wostream << "Hi" << '\n';
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std::endl(my_iostream);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_iostream << '\n';
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std::endl(my_wiostream);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_wiostream << '\n';
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std::endl(my_ostream);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_ostream << '\n';
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std::endl(my_wostream);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_wostream << '\n';
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}
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using namespace std;
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void bad_using_namespace_std() {
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cout << "Hello" << endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not use 'endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: cout << "Hello" << '\n';
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endl(cout);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: cout << '\n';
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}
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namespace my_prefix = std;
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void bad_using_user_namespace() {
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my_prefix::cout << "Hello" << my_prefix::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:33: warning: do not use 'my_prefix::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_prefix::cout << "Hello" << '\n';
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my_prefix::endl(my_prefix::cout);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use 'my_prefix::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: my_prefix::cout << '\n';
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}
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struct CustomLogger {
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template <typename T>
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std::ostream& operator<<(T);
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std::ostream& operator<<(std::ostream& (*)(std::ostream&));
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};
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void bad_custom_stream() {
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CustomLogger logger;
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logger << std::endl;
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: do not use 'std::endl' with streams; use '\n' instead [performance-avoid-endl]
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// CHECK-FIXES: logger << '\n';
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}
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