// rustfmt-spaces_within_parens: true

enum E {
    A( u32 ),
    B( u32, u32 ),
    C( u32, u32, u32 ),
    D(),
}

struct TupleStruct0();
struct TupleStruct1( u32 );
struct TupleStruct2( u32, u32 );

fn fooEmpty() {}

fn foo( e: E, _: u32 ) -> ( u32, u32 ) {

    // Tuples
    let t1 = ();
    let t2 = ( 1, );
    let t3 = ( 1, 2 );

    let ts0 = TupleStruct0();
    let ts1 = TupleStruct1( 1 );
    let ts2 = TupleStruct2( 1, 2 );

    // Tuple pattern
    let ( a, b, c ) = ( 1, 2, 3 );

    // Expressions
    let x = ( 1 + 2 ) * ( 3 );

    // Function call
    fooEmpty();
    foo( 1, 2 );

    // Pattern matching
    match e {
        A( _ ) => (),
        B( _, _ ) => (),
        C( .. ) => (),
        D => (),
    }

    ( 1, 2 )
}