Yes, that seems to work... thanks!!!!
-Josh
On 12/10/2015 11:19 PM, Brion Vibber wrote:
The template parameters for 'function' only seem to accept method
pointers for the given type, not for a parent type, so this kinda
borks up even though it feels like it *ought* to work to just pass in
&Base::doSomething here.
(It might be worth filing as an issue on github so it doesn't get
forgotten; seems like something that would come up at API boundaries.)
Try using a static_cast on the method pointer, from the base to the
derived type:
EMSCRIPTEN_BINDINGS(bindo) {
emscripten::class_<Derived>("Derived")
.constructor()
.function("doSomething",
static_cast<void(Derived::*)()>(&Base::doSomething));
}
It's a little verbose, but seems to do the right thing and doesn't
require writing extra functions.
-- brion
On Thu, Dec 10, 2015 at 1:31 AM, Joshua Auerbach
<[email protected] <mailto:[email protected]>> wrote:
Let's say I have the following in C++
|class Base {||
||public:||
|| void doSomething() { ||
||||//do something here ||
||||}||
||};||
||
||class Derived : public Base {||
||};|
And I want to expose Derived to js including the inherited method
doSomething (a toy example illustrative of a bigger issue)
Is this possible without also exposing Base? Or do I really need
to recreate the entire class hierarchy in my bindings?
I know these bindings work:
|
||emscripten::class_<Base>("Base")||
|| .function("doSomething", &Base::doSomething);||
||
||emscripten::class_<Derived, emscripten::base<Base>>("Derived")||
|| .constructor();|
But this does not:
|emscripten::class_<Derived>("Derived")||
|| .constructor()||
|| .function("doSomething", &Derived::doSomething)|
unless I change the C++ definition of Derived to
|class Derived : public Base {||
||public:||
|| void doSomething() { Base::doSomething(); }||
||};||
|
I never want Base to be exposed to js just the inherited method.
Is there any way to expose those without recreating the hierarchy
or making trivial overrides like I do above?
Thanks!!!
Josh
--
Dr. Joshua E. Auerbach
Postdoctoral Researcher
Laboratory of Intelligent Systems
École Polytechnique Fédérale de Lausanne
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École Polytechnique Fédérale de Lausanne
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