Throwing initializers don't work

[aDifferentJT]

If my bridge module contains the below then the resulting generated Swift fails to compile, because it's trying to return from a convenience initialiser instead of calling .init

extern "Rust" {
    struct T;

    #[swift_bridge(init)]
    fn new() -> Result<T, String>;
}

as a workaround one can use the following, but it's not ideal.

extern "Rust" {
    struct T;

    #[swift_bridge(associated_to = T)]
    fn new() -> Result<T, String>;
}

[chinedufn]

Thanks for the report.

Failable initializers return an Optional https://docs.swift.org/swift-book/documentation/the-swift-programming-language/initialization/#Failable-Initializers .

Here's a PR that implements support for failable initializers: #276
That PR should be a good example for anyone that wants to implement support for throwing initializers.

The Rust calls throwing Swift function PR should also be helpful to look at #347