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Lua add an Empty/Nil shared-pointer constructor

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This commit is contained in:
Robin Gareus 2017-01-21 20:07:54 +01:00
parent d0b42aee0e
commit 6f7f527e1d
1 changed files with 26 additions and 0 deletions
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26
libs/lua/LuaBridge/detail/Namespace.h
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@ -482,6 +482,14 @@ private:
return 1;
}
template <class T>
static int ctorNilPtrPlacementProxy (lua_State* L)
{
const T* newobject = new T ();
Stack<T>::push (L, *newobject);
return 1;
}
//--------------------------------------------------------------------------
/**
Pop the Lua stack.
@ -1279,6 +1287,24 @@ private:
return addConstructor <void (*) ()> ();
}
WSPtrClass <T>& addNilPtrConstructor ()
{
FUNDOC ("Weak/Shared Pointer Constructor", "", MemFn)
set_shared_class ();
lua_pushcclosure (L,
&shared. template ctorNilPtrPlacementProxy <boost::shared_ptr<T> >, 0);
rawsetfield(L, -2, "__call");
set_weak_class ();
// NOTE: this constructs an empty weak-ptr,
// ideally we'd construct a weak-ptr from a referenced shared-ptr
lua_pushcclosure (L,
&weak. template ctorNilPtrPlacementProxy <boost::weak_ptr<T> >, 0);
rawsetfield(L, -2, "__call");
return *this;
}
WSPtrClass <T>& addExtCFunction (char const* name, int (*const fp)(lua_State*))
{
DATADOC ("Weak/Shared Ext C Function", name, fp)