pkgs/swift2objc/test/integration/tuples_input.swift

// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// Test simple tuple return
public class TupleTest {

    public func getNothing() -> () {
        return ()
    }
    
    public func getSingleValue() -> (Int) {
        return (42)
    }

    public func getCoordinates() -> (Int, Int) {
        return (10, 20)
    }
    
    public func getLabeledTuple() -> (id: Int, name: String) {
        return (id: 42, name: "Alice")
    }
    
    public func getMixedTuple() -> (Int, value: String, Bool) {
        return (1, value: "test", true)
    }
    
    // Tuple with optional elements
    // TODO(https://github.com/dart-lang/native/issues/1743): Enable this when optional primitives are supported.
    // public func getTupleWithOptionals() -> (Int?, String?) {
    //     return (nil, "test")
    // }
    
    // Deeply nested tuple (3 levels)
    public func getDeeplyNestedTuple() -> (Int, (String, (Bool, Double))) {
        return (1, ("test", (true, 3.14)))
    }
    
    // Large tuple with many elements
    public func getLargeTuple() -> (Int, Int, Int, Int, Int) {
        return (1, 2, 3, 4, 5)
    }
    
    // All labeled elements
    public func getAllLabeledTuple() -> (x: Int, y: Int, z: String) {
        return (x: 10, y: 20, z: "point")
    }
    
    public class NestedTupleTest {
        public func getNestedTuple() -> (Int, (String, Bool)) {
            return (42, ("test", true))
        }
    }

    // Test repeated nested tuples (both elements have the same tuple type)
    public func getRepeatedNestedTuple() -> ((Int, String), (Int, String)) {
        return ((1, "a"), (2, "b"))
    }
    // Test tuple with cycle
    // TODO(https://github.com/dart-lang/native/issues/1358): Enable this when the bug is fixed.
    /*
    public func getCircularTuple() -> (Foo, Bar)? {
        return nil
    }
    
    public class Foo {
        public func getCycle() -> (Foo, Bar) {
            return (self, Bar())
        }
    }
    
    public class Bar {
        public func getCycle() -> (Foo, Bar) {
            return (Foo(), self)
        }
    }
    */

// TODO(https://github.com/dart-lang/native/issues/1743): Enable this when optional return types are fully supported.
// public class OptionalTupleTest {
//     public func getOptionalTuple() -> (Int, String)? {
//         return (1, "test")
//     }
    
//     // Optional nested tuple
//     public func getOptionalNestedTuple() -> (Int, (String, Bool)?) {
//         return (42, nil)
//     }
// }
}