024 shorthand field params

// Test shorthand parameter syntax with struct fields
// When passing t.field, should expand to field: t.field (not t.field: t.field)

const std = @import("std");

~event process {
    source: []const u8,
    branch: []const u8,
    destination: ?[]const u8,
}
| done {}

~proc process {
    std.debug.print("source={s} branch={s}\n", .{source, branch});
    return .{ .done = .{} };
}

pub const Data = struct {
    source: []const u8,
    branch: []const u8,
    destination: ?[]const u8,
};

// Main flow: Use shorthand syntax (r.data.source) which should expand to (source: r.data.source)
~start()
| result r |> process(r.data.source, r.data.branch, r.data.destination)
    | done |> _

~event start {}
| result { data: Data }

~proc start {
    const data = Data{
        .source = "test_event",
        .branch = "success",
        .destination = null,
    };
    return .{ .result = .{ .data = data } };
}