1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <ostream> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// template <class charT, class traits = char_traits<charT> > 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class basic_ostream; 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// operator<<(unsigned short val); 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <ostream> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class CharT> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantclass testbuf 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : public std::basic_streambuf<CharT> 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_streambuf<CharT> base; 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::basic_string<CharT> str_; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf() 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::basic_string<CharT> str() const 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant {return std::basic_string<CharT>(base::pbase(), base::pptr());} 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantprotected: 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant virtual typename base::int_type 37e75f899c12e8e102f26b8b5bb6b58f51813bd10eStephan T. Lavavej overflow(typename base::int_type ch = base::traits_type::eof()) 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 39e75f899c12e8e102f26b8b5bb6b58f51813bd10eStephan T. Lavavej if (ch != base::traits_type::eof()) 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 417a477f58867d11c9a85a374c6f237577e43156c2Stephan T. Lavavej int n = static_cast<int>(str_.size()); 42e75f899c12e8e102f26b8b5bb6b58f51813bd10eStephan T. Lavavej str_.push_back(static_cast<CharT>(ch)); 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant str_.resize(str_.capacity()); 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant base::setp(const_cast<CharT*>(str_.data()), 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const_cast<CharT*>(str_.data() + str_.size())); 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant base::pbump(n+1); 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 48e75f899c12e8e102f26b8b5bb6b58f51813bd10eStephan T. Lavavej return ch; 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::ostream os((std::streambuf*)0); 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned short n = 0; 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant os << n; 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(os.bad()); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(os.fail()); 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb; 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::ostream os(&sb); 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned short n = 0; 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant os << n; 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(sb.str() == "0"); 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb; 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::ostream os(&sb); 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned short n = 10; 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant os << n; 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(sb.str() == "10"); 74bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 75bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb; 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::ostream os(&sb); 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant hex(os); 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant unsigned short n = 0xFFF6; 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant os << n; 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(sb.str() == "fff6"); 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 84