Swift Mapping for Operations on Local Types

An operation on a local interface or a local class is mapped to a Swift instance method with the same name. The mapping of operation parameters to Swift is identical to the Client-Side Mapping for these parameters.

Unlike the Client-Side mapping, there is trailing Context parameter in these methods.

For example:

Slice

module M
{
    local interface L; // forward declared
    local sequence<L> LSeq;
    local interface L
    {
        string op(int n, string s, LocalObject any, out int m, out string t, out LSeq newLSeq);
    }
}

is mapped to:

Swift

public typealias LSeq = [L?]

public protocol L: AnyObject {
    func op(n: Int32, s: String, any: AnyObject?) throws -> (returnValue: String, m: Int32, t: String, newLSeq: LSeq)
}

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