Namespaces
Variants
Views
Actions

std::wbuffer_convert::~wbuffer_convert

From cppreference.com
< cpp‎ | locale‎ | wbuffer convert
Revision as of 17:30, 2 November 2012 by P12bot (Talk | contribs)

Template:ddcl list begin <tr class="t-dsc-header">

<td>
Defined in header <locale>
</td>

<td></td> <td></td> <tr class="t-dcl ">

<td class="t-dcl-nopad">
~wbuffer_convert();
</td>

<td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> Template:ddcl list end

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

#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


See also

Template:cpp/locale/wstring convert/dcl list ~wstring convert