Slices

Static Slices

(Supported by c, cpp, kotlin, nanobind, queried with supports=static_slices)

Support for &'static slices.

Primitive Structs

(Supported by c, cpp, nanobind, queried with supports=abi_compatibles)

Some Diplomat backends support providing slices of structs as function parameters:

#[diplomat::bridge]
mod ffi {
    #[diplomat::attr(auto, abi_compatible)]
    struct Struct {
        a : bool,
        b : i32
    }

    impl Struct {
        pub fn bar(slice : &mut [Struct]) {}
        pub fn baz(other_slice : &[Struct]) {}
    }
}

Mapping Diplomat types from the bound language to the C API can vary based on what types are in the struct. To reduce this complexity, slices of structs come with some restrictions:

• The struct type must have #[diplomat::attr(auto, abi_compatible)] attribute.
• The struct can only have fields that are either:
  • Primitive
  • Nested primitive structs