• Rust Interact With Cars

Since the Objective-C runtime exposes a C interface, it’s actually pretty easyto interact with from Rust.Over the past months I’ve worked on a Rust wrapper around theand some classes of the,creatively called.I had hoped to learn more about Rust’s foreign function interface and theObjective-C runtime, but along the way I also encountered some interestingchallenges in API design. Calling Objective-C methodsIf we want to interact with Objective-C from Rust, one of the first thingswe’ll need to be able to do is call methods on Objective-C objects.Let’s consider this example where we have an NSString pointer, string.

Hello, world. Brand new poster here though I posted similar messages in other language forums. I hope this is the right place to ask because my question is half about existing stuff and half about prospective work.I am considering starting with Rust amid a C code base. Call of pripyat multiplayer mod. New Rust code would need to somehow integrate with the existing C code. The C code is the expected melange of free functions, classes, what have you and uses STL and Boost (also other libs less prominently).

Interfacing Rust with C and C. Scottwilson August 23, 2014, 10:45pm #1. Hello, world. Brand new poster here though I posted similar messages in other language forums. I hope this is the right place to ask because my question is half about existing stuff and half about prospective work. I still consider C# the best language on the market for most practical purposes. When it came around I was young and stupid and I thought that it would make C obsolete. Now the hope is raising again. I can’t wait till Rust is better than C#.

Allow me to ask:.What is the current support for calling C/C free functions from Rust? What level of mangling is supported? What data types can be passed without translation from Rust to C/C?.How about template functions? Is it possible to call a C template function from Rust?.How can a C object be used from Rust? Can C methods be called from Rust? The question applies to value types - no virtuals - and polymorphic types with virtuals, inheritance etc.

And of course simple C structs.How about template objects? One issue is that many C interfaces pass std::string and std::map as parameters. How feasible is to manipulate such objects in Rust?.How about the other way? Can a C/C function call a Rust function?I would appreciate any pointers you have to how-to materials. In equal measure I am interested in plans to address such issues in the foreseeable future.

I looked for #repr© and found. Which I have perused leading to additional questions.Contiguous buffers and lengths can be passed portably. For example fn snappyvalidatecompressedbuffer(compressed:.const u8,compressedlength: sizet) - cintIs there a way short of writing a wrapper to explain the type system that the two parameters are interdependent?How about passing a Rust string to a C function expecting a zero-terminated string? More importantly I am concerned with passing more complex structures such as hash tables across the languages.

Rust Interact With Cars

It seems some marshaling is needed, is there a standard mechanism for marshaling?A full C compiler should not be needed for proper name mangling and ABI. Are there any plans for the Rust designers to enhance C support in Rust? ( that’s why I asked here. I am interested in future outlook as much as what is available right now.).

Scottwilson:that’s why I asked here. I am interested in future outlook as much as what is available right nowI still recommend either of those two venues since these are general questions not language/library work (and yes, many/most of the key Rust developers hang out on /r/rust ); we try to keep this forum focused on proposals/development work, since we have other venues appropriate for questions.

Furthermore, questions very similar to this have been asked recently,.At the very least, it’s a good idea to scout out the current state of Rust’s support by asking on /r/rust, and then digest that into focused ‘future work’ questions which may be more appropriate for here.