Is it possible use your libtorrent.i wrap a c# version?

[ycy1164656]

I am making a wpf client ,and will use libtorrent,I'm wondering if it is possible to use your swig/libtorrent.i to create a c# version ? Thx .

[gubatron]

if swig support C# I'm sure it's possible, it'd be cool if you'd help us with that.

Ideally the C# high level abstraction layer should mimic the current high level abstraction classes we've created in Java, aside from all the automatic wrapping that swig does for us.

Apparently Swig does support C# https://www.swig.org/Doc3.0/CSharp.html#CSharp_introduction_swig2_compatibility

but I think there are some differences and we'll have to have a second libtorrent.c_sharp.i

[ycy1164656]

if swig support C# I'm sure it's possible, it'd be cool if you'd help us with that.

Ideally the C# high level abstraction layer should mimic the current high level abstraction classes we've created in Java, aside from all the automatic wrapping that swig does for us.

Apparently Swig does support C# https://www.swig.org/Doc3.0/CSharp.html#CSharp_introduction_swig2_compatibility

but I think there are some differences and we'll have to have a second libtorrent.c_sharp.i

I modified libtorrent.i file like this :

libtorren.i.txt

mainly modified

` %define TYPE_INTEGRAL_CONVERSION_EX(name, underlying_type, api_type, java_type) %typemap(ctype) name, const name& "java_type" %typemap(imtype) name, const name& "java_type" %typemap(cstype) name, const name& "java_type"

%typemap(in) name { $1 = name(static_cast($input)); } %typemap(out) name { $result = static_cast(static_cast($1)); } %typemap(csin) name, const name& "$csinput" %typemap(csout) name, const name& { return $imcall; } %enddef `

then I copied libtorrent 1.2.18 include directory and boost to swig directory,

and I run swig -c++ -csharp libtorrent.i ,

but I got this error

boost\system\system_error.hpp(20) : Error: Syntax error in input(1)

do you have any idea what may cause this error?

[ycy1164656]

by the way, I used swig 4.1

[ycy1164656]

by the way, I used swig 4.1

ps. this error 'boost\system\system_error.hpp(20) : Error: Syntax error in input(1)' also occured when I run swig -c++ -java libtorrent.i(the origin libtorrent.i)

[gubatron]

running swig on that file has certain requirements in environment variables carrying different paths.

Look at the build-xxx scripts in the swig directory

[gubatron]

You should use swig 4.0.1, I just had it break by running the wrong version.

[gubatron]

/usr/local/bin/swig -version

SWIG Version 4.0.1

[gubatron]

4.0.2 works as well

[gubatron]

just tested with swig 4.1.0 and it breaks. The libtorrent.i would probably need to be updated to make it work with 4.1.0, but that's not really our priority, make sure you have swig 4.0.2 and you should be able to move forward.

[gubatron]

I've made it so that it works with swig 4.1.0

This was the issue. On boost/system/system_error.hpp:20

class BOOST_SYMBOL_VISIBLE system_error: public std::runtime_error

swig couldn't recognize BOOST_SYMBOL_VISIBLE

[ycy1164656]

👍🏻