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Add support for std::auto_ptr inputs

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Ported from std::unique, behaviour is identical with regard to memory ownership/handling
This commit is contained in:
William S Fulton 2022-07-18 08:32:26 +01:00
commit db5e37a1d7
11 changed files with 477 additions and 47 deletions
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31
Lib/csharp/std_auto_ptr.i
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@ -1,27 +1,36 @@
/* -----------------------------------------------------------------------------
* std_auto_ptr.i
*
* The typemaps here allow handling functions returning std::auto_ptr<>,
* which is the most common use of this type. If you have functions taking it
* as parameter, these typemaps can't be used for them and you need to do
* something else (e.g. use shared_ptr<> which SWIG supports fully).
* SWIG library file for handling std::auto_ptr.
* Memory ownership is passed from the std::auto_ptr C++ layer to the proxy
* class when returning a std::auto_ptr from a function.
* Memory ownership is passed from the proxy class to the std::auto_ptr in the
* C++ layer when passed as a parameter to a wrapped function.
* ----------------------------------------------------------------------------- */
%define %auto_ptr(TYPE)
%typemap (ctype) std::auto_ptr< TYPE > "void *"
%typemap (imtype, out="System.IntPtr") std::auto_ptr< TYPE > "global::System.Runtime.InteropServices.HandleRef"
%typemap (cstype) std::auto_ptr< TYPE > "$typemap(cstype, TYPE)"
%typemap(in) std::auto_ptr< TYPE >
%{ $1.reset((TYPE *)$input); %}
%typemap(csin) std::auto_ptr< TYPE > "$typemap(cstype, TYPE).swigRelease($csinput)"
%typemap (out) std::auto_ptr< TYPE > %{
$result = (void *)$1.release();
$result = (void *)$1.release();
%}
%typemap(csout, excode=SWIGEXCODE) std::auto_ptr< TYPE > {
System.IntPtr cPtr = $imcall;
$typemap(cstype, TYPE) ret = (cPtr == System.IntPtr.Zero) ? null : new $typemap(cstype, TYPE)(cPtr, true);$excode
return ret;
}
System.IntPtr cPtr = $imcall;
$typemap(cstype, TYPE) ret = (cPtr == System.IntPtr.Zero) ? null : new $typemap(cstype, TYPE)(cPtr, true);$excode
return ret;
}
%template() std::auto_ptr< TYPE >;
%enddef
namespace std {
template <class T> class auto_ptr {};
}
template <class T> class auto_ptr {};
}