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      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 // <locale>
     11 
     12 // template <class Facet> locale combine(const locale& other) const;
     13 
     14 #include <locale>
     15 #include <new>
     16 #include <cassert>
     17 
     18 int new_called = 0;
     19 
     20 void* operator new(std::size_t s) throw(std::bad_alloc)
     21 {
     22     ++new_called;
     23     return std::malloc(s);
     24 }
     25 
     26 void  operator delete(void* p) throw()
     27 {
     28     --new_called;
     29     std::free(p);
     30 }
     31 
     32 void check(const std::locale& loc)
     33 {
     34     assert(std::has_facet<std::collate<char> >(loc));
     35     assert(std::has_facet<std::collate<wchar_t> >(loc));
     36 
     37     assert(std::has_facet<std::ctype<char> >(loc));
     38     assert(std::has_facet<std::ctype<wchar_t> >(loc));
     39     assert((std::has_facet<std::codecvt<char, char, std::mbstate_t> >(loc)));
     40     assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
     41     assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
     42     assert((std::has_facet<std::codecvt<wchar_t, char, std::mbstate_t> >(loc)));
     43 
     44     assert((std::has_facet<std::moneypunct<char> >(loc)));
     45     assert((std::has_facet<std::moneypunct<wchar_t> >(loc)));
     46     assert((std::has_facet<std::money_get<char> >(loc)));
     47     assert((std::has_facet<std::money_get<wchar_t> >(loc)));
     48     assert((std::has_facet<std::money_put<char> >(loc)));
     49     assert((std::has_facet<std::money_put<wchar_t> >(loc)));
     50 
     51     assert((std::has_facet<std::numpunct<char> >(loc)));
     52     assert((std::has_facet<std::numpunct<wchar_t> >(loc)));
     53     assert((std::has_facet<std::num_get<char> >(loc)));
     54     assert((std::has_facet<std::num_get<wchar_t> >(loc)));
     55     assert((std::has_facet<std::num_put<char> >(loc)));
     56     assert((std::has_facet<std::num_put<wchar_t> >(loc)));
     57 
     58     assert((std::has_facet<std::time_get<char> >(loc)));
     59     assert((std::has_facet<std::time_get<wchar_t> >(loc)));
     60     assert((std::has_facet<std::time_put<char> >(loc)));
     61     assert((std::has_facet<std::time_put<wchar_t> >(loc)));
     62 
     63     assert((std::has_facet<std::messages<char> >(loc)));
     64     assert((std::has_facet<std::messages<wchar_t> >(loc)));
     65 }
     66 
     67 struct my_facet
     68     : public std::locale::facet
     69 {
     70     int test() const {return 5;}
     71 
     72     static std::locale::id id;
     73 };
     74 
     75 std::locale::id my_facet::id;
     76 
     77 int main()
     78 {
     79 {
     80     {
     81         std::locale loc;
     82         std::locale loc2(loc, new my_facet);
     83         std::locale loc3 = loc.combine<my_facet>(loc2);
     84         check(loc3);
     85         assert(loc3.name() == "*");
     86         assert((std::has_facet<my_facet>(loc3)));
     87         const my_facet& f = std::use_facet<my_facet>(loc3);
     88         assert(f.test() == 5);
     89     }
     90     assert(new_called == 0);
     91 }
     92 {
     93     {
     94         std::locale loc;
     95         std::locale loc2;
     96         try
     97         {
     98             std::locale loc3 = loc.combine<my_facet>(loc2);
     99             assert(false);
    100         }
    101         catch (std::runtime_error&)
    102         {
    103         }
    104     }
    105     assert(new_called == 0);
    106 }
    107 }
    108