ios_base.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c
1//===----------------------------------------------------------------------===// 2// 3// ��������������������The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <ostream> 11 12// template <class charT, class traits = char_traits<charT> > 13// class basic_ostream; 14 15// basic_ostream<charT,traits>& operator<<(ios_base& (*pf)(ios_base&)); 16 17#include <ostream> 18#include <cassert> 19 20template <class CharT> 21class testbuf 22 : public std::basic_streambuf<CharT> 23{ 24 typedef std::basic_streambuf<CharT> base; 25 std::basic_string<CharT> str_; 26public: 27 testbuf() 28 { 29 } 30 31 std::basic_string<CharT> str() const 32 {return std::basic_string<CharT>(base::pbase(), base::pptr());} 33 34protected: 35 36 virtual typename base::int_type 37 overflow(typename base::int_type __c = base::traits_type::eof()) 38 { 39 if (__c != base::traits_type::eof()) 40 { 41 int n = str_.size(); 42 str_.push_back(__c); 43 str_.resize(str_.capacity()); 44 base::setp(const_cast<CharT*>(str_.data()), 45 const_cast<CharT*>(str_.data() + str_.size())); 46 base::pbump(n+1); 47 } 48 return __c; 49 } 50}; 51 52int main() 53{ 54 { 55 testbuf<char> sb; 56 std::ostream os(&sb); 57 assert(!(os.flags() & std::ios_base::uppercase)); 58 os << std::uppercase; 59 assert( (os.flags() & std::ios_base::uppercase)); 60 } 61} 62