std::wbuffer_convert<Codecvt,Elem,Tr>::~wbuffer_convert (3) - Linux Manuals

std::wbuffer_convert<Codecvt,Elem,Tr>::~wbuffer_convert: std::wbuffer_convert<Codecvt,Elem,Tr>::~wbuffer_convert

NAME

std::wbuffer_convert<Codecvt,Elem,Tr>::~wbuffer_convert - std::wbuffer_convert<Codecvt,Elem,Tr>::~wbuffer_convert

Synopsis

Defined in header <locale>
~wbuffer_convert();

Destroys the wbuffer_convert object and deletes the pointer to the conversion facet.

Notes

Some implementations are able to delete any facet, including the locale-specific facets with protected destructors. Other implementations require the facet to have a public destructor, similar to the the locale-independent facets from <codecvt>.

Example

// Run this code

  #include <locale>
  #include <utility>
  #include <iostream>
  #include <codecvt>

  // utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
  template<class Facet>
  struct deletable_facet : Facet
  {
      template<class ...Args>
      deletable_facet(Args&& ...args) : Facet(std::forward<Args>(args)...) {}
      ~deletable_facet() {}
  };

  int main()
  {
      // GB18030 / UCS4 conversion, using locale-based facet directly
      // typedef std::codecvt_byname<char32_t, char, std::mbstate_t> gbfacet_t;
      // Compiler error: "calling a protected destructor of codecvt_byname<> in ~wbuffer_convert"
      // std::wbuffer_convert<gbfacet_t, char32_t> gbto32(std::cout.rdbuf(),
      // new gbfacet_t("zh_CN.gb18030"));

      // GB18030 / UCS4 conversion facet using a facet with public destructor
      typedef deletable_facet<std::codecvt_byname<char32_t, char, std::mbstate_t>> gbfacet_t;
      std::wbuffer_convert<gbfacet_t, char32_t> gbto32(std::cout.rdbuf(),
                                             new gbfacet_t("zh_CN.gb18030"));
  } // destructor called here