Hi Ricky,
I am having the same problem. Did you ever find a solution?
On Monday, May 2, 2016 at 12:30:56 AM UTC+2, Ricky wrote:
>
> I've been investigating/playing with Embind and one of the things that
> currently bothers me is the allow_raw_pointers that I have in locations
> in my code. Essentially I'm using them in locations where I need the
> language specific resources to do some work. An example of this could be
> (but doesn't have to be through the use of Berkley sockets) if I wanted to
> use JQueries Ajax method to do requests.
>
> The code is below if you want to see but basically we have a pure virtual
> class IAjaxAdapter and App. In it's constructor App takes a
> std::shared_ptr<IAjaxAdapter> but since IAjaxAdapter is created by running
> Module.IAjaxAdapter.implement or Module.IAjaxAdapter.extends, it creates a
> raw pointer, not a smart pointer and you eventually get the error
> "BindingError: Passing raw pointer to smart pointer is illegal" which makes
> complete sense.
>
> So my question is if its possible to wrap or create a smart pointer when
> using implement or extends from the javascript side so you do not have to
> use allow_raw_pointers which would open up the internals of your code to
> possible abuse if those raw pointers are not handled correctly.
>
> Cheers,
> Ricky
>
> ExternalImpl.h
> #pragma once
>
> #include <memory>
> #include <string>
> #include <map>
>
> class IAjaxAdapter
> {
> public:
> virtual void ajax(std::wstring url, std::map<std::wstring, std::wstring>
> settings) = 0;
> };
>
> class App
> {
> public:
> App(std::shared_ptr<IAjaxAdapter> ajaxManager);
> };
>
>
> ExternalImpl.cpp
> #include "ExternalImpl.h"
>
> #ifdef EMSCRIPTEN
> #include <emscripten/bind.h>
>
> using namespace emscripten;
> #endif
>
> App::App(std::shared_ptr<IAjaxAdapter> ajaxManager)
> {
> ajaxManager->ajax(L"https://kripken.github.io";, {});
> }
>
> #ifdef EMSCRIPTEN
>
> struct IAjaxAdapterWrapper : public wrapper<IAjaxAdapter> {
> EMSCRIPTEN_WRAPPER(IAjaxAdapterWrapper);
> void ajax(std::wstring url, std::map<std::wstring, std::wstring> settings
> ) {
> return call<void>("ajax", url, settings);
> }
> };
>
> EMSCRIPTEN_BINDINGS(ExternalImpl) {
> class_<IAjaxAdapter>("IAjaxAdapter")
> .smart_ptr<std::shared_ptr<IAjaxAdapter>>("IAjaxAdapter")
> .function("ajax", &IAjaxAdapter::ajax, pure_virtual())
> .allow_subclass<IAjaxAdapterWrapper>("IAjaxAdapterWrapper")
> ;
> class_<App>("App")
> .smart_ptr_constructor("App", &std::make_shared<App, std::shared_ptr<
> IAjaxAdapter>>)
> ;
> }
> #endif
>
>
> externalImpl.html
> <HTML>
> <HEAD>
> <META NAME="GENERATOR" Content="Microsoft Visual Studio">
> <TITLE></TITLE>
> <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.2.1.min.js
> " type="text/javascript"></script>
> <script src="externalImpl.js" type="text/javascript"></script>
> <script>
> $(function () {
> $("#writeToMe").text("Working");
> var item = new Module.App(Module.IAjaxAdapter.implement({
> ajax: function (url, settings) {
> $("#writeToMe").text('Ajax function called');
> }
> }));
> });
> </script>
> </HEAD>
> <BODY>
> <div id="writeToMe"></div>
> </BODY>
> </HTML>
>
>
>
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