1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <fstream> 11 12 // template <class charT, class traits = char_traits<charT> > 13 // class basic_ofstream 14 15 // void swap(basic_ofstream& rhs); 16 17 #include <fstream> 18 #include <cassert> 19 #include "platform_support.h" 20 21 int main() 22 { 23 std::string temp1 = get_temp_file_name(); 24 std::string temp2 = get_temp_file_name(); 25 { 26 std::ofstream fs1(temp1.c_str()); 27 std::ofstream fs2(temp2.c_str()); 28 fs1 << 3.25; 29 fs2 << 4.5; 30 fs1.swap(fs2); 31 fs1 << ' ' << 3.25; 32 fs2 << ' ' << 4.5; 33 } 34 { 35 std::ifstream fs(temp1.c_str()); 36 double x = 0; 37 fs >> x; 38 assert(x == 3.25); 39 fs >> x; 40 assert(x == 4.5); 41 } 42 std::remove(temp1.c_str()); 43 { 44 std::ifstream fs(temp2.c_str()); 45 double x = 0; 46 fs >> x; 47 assert(x == 4.5); 48 fs >> x; 49 assert(x == 3.25); 50 } 51 std::remove(temp2.c_str()); 52 { 53 std::wofstream fs1(temp1.c_str()); 54 std::wofstream fs2(temp2.c_str()); 55 fs1 << 3.25; 56 fs2 << 4.5; 57 fs1.swap(fs2); 58 fs1 << ' ' << 3.25; 59 fs2 << ' ' << 4.5; 60 } 61 { 62 std::wifstream fs(temp1.c_str()); 63 double x = 0; 64 fs >> x; 65 assert(x == 3.25); 66 fs >> x; 67 assert(x == 4.5); 68 } 69 std::remove(temp1.c_str()); 70 { 71 std::wifstream fs(temp2.c_str()); 72 double x = 0; 73 fs >> x; 74 assert(x == 4.5); 75 fs >> x; 76 assert(x == 3.25); 77 } 78 std::remove(temp2.c_str()); 79 } 80
