File: one_element_tuple.swift

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (29 lines) | stat: -rw-r--r-- 965 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
// RUN: %target-typecheck-verify-swift -disable-availability-checking

let t1: (_: Int) = (_: 3)

// FIXME: diag::tuple_single_element should be diagnosed in the constraint system
// instead of MiscDiagnostics, which will allow the compiler to emit that
// error instead of bogus type mismatches for tuple expressions.
let t2: (x: Int) = (x: 3)
// expected-error@-1{{cannot create a single-element tuple with an element label}}
// expected-error@-2 {{cannot convert value of type '(x: Int)' to specified type 'Int'}}

let i1: Int = t1.0
// expected-error@-1 {{value of type 'Int' has no member '0'}}

let i2: Int = t2.x
// expected-error@-1 {{value of type 'Int' has no member 'x'}}

let m1: (_: Int).Type = (_: Int).self
let m2: (x: Int).Type = (x: Int).self
// expected-error@-1 2 {{cannot create a single-element tuple with an element label}}

struct S<each T> {
  var t: (repeat each T)
}

func packSubstitution() -> Int {
  let s = S<Int>(t: 1)
  return s.t
}