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d07af8ad80
This is a nice contained test case that has the goal of testing all the new functionality. Having this committed before the code changes will make it clear whether any behavior changes between the old and new implementation (I expect some small diagnostic changes like uttering T? instead of T! for some types).
117 lines
3.4 KiB
Swift
117 lines
3.4 KiB
Swift
// RUN: %target-typecheck-verify-swift
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func basic() {
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var i: Int! = 0
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let _: Int = i
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i = 7
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}
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func takesIUOs(i: Int!, j: inout Int!) -> Int {
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j = 7
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return i
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}
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struct S {
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let i: Int!
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var j: Int!
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let k: Int
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var m: Int
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func fn() -> Int! { return i }
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}
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func takesStruct(s: S) {
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let _: Int = s.i
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let _: Int = s.j
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var t: S! = s
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t.j = 7
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}
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var a: (Int, Int)! = (0, 0)
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a.0 = 42
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var s: S! = S(i: nil, j: 1, k: 2, m: 3)
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_ = s.i
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let _: Int = s.j
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_ = s.k
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s.m = 7
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s.j = 3
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struct T {
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let i: Float!
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var j: Float!
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func fn() -> Float! { return i }
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}
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func overloaded() -> S { return S(i: 0, j: 1, k: 2, m: 3) }
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func overloaded() -> T { return T(i: 0.5, j: 1.5) }
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let _: Int = overloaded().i
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func cflow(i: Int!, j: inout Bool!, s: S) {
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let k: Int? = i
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let m: Int = i
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let b: Bool! = i == 0
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if i == 7 {
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if s.i == 7 {
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}
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}
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let _ = i ? 7 : 0 // expected-error {{optional type 'Int!' cannot be used as a boolean; test for '!= nil' instead}}
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let _ = b ? i : k
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let _ = b ? i : m
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let _ = b ? j : b
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let _ = i ? i : k // expected-error {{result values in '? :' expression have mismatching types 'Int!' and 'Int?'}}
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let _ = i ? i : m // expected-error {{result values in '? :' expression have mismatching types 'Int!' and 'Int'}}
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let _ = s.i ? s.j : s.k // expected-error {{result values in '? :' expression have mismatching types 'Int!' and 'Int'}}
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let _ = b ? s.j : s.k
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if j {}
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let _ = j ? 7 : 0
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}
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func forcedResultInt() -> Int! {
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return 0
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}
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let _: Int = forcedResultInt()
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func forcedResult() -> Int! {
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return 0
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}
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func forcedResult() -> Float! {
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return 0
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}
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func overloadedForcedResult() -> Int {
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return forcedResult()
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}
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func forceMemberResult(s: S) -> Int {
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return s.fn()
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}
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func overloadedForceMemberResult() -> Int {
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return overloaded().fn()
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}
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func overloadedForcedStructResult() -> S! { return S(i: 0, j: 1, k: 2, m: 3) }
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func overloadedForcedStructResult() -> T! { return T(i: 0.5, j: 1.5) }
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let _: S = overloadedForcedStructResult()
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let _: Int = overloadedForcedStructResult().i
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let x: Int? = 1
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let y0: Int = x as Int! // expected-warning {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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let y1: Int = (x as Int!)! // expected-warning {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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let z0: Int = x as! Int! // expected-warning {{forced cast from 'Int?' to 'Int!' always succeeds; did you mean to use 'as'?}}
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// expected-warning@-1 {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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let z1: Int = (x as! Int!)! // expected-warning {{forced cast from 'Int?' to 'Int!' always succeeds; did you mean to use 'as'?}}
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// expected-warning@-1 {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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let w0: Int = (x as? Int!)! // expected-warning {{conditional cast from 'Int?' to 'Int!' always succeeds}}
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// expected-warning@-1 {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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let w1: Int = (x as? Int!)!! // expected-warning {{conditional cast from 'Int?' to 'Int!' always succeeds}}
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// expected-warning@-1 {{using '!' in this location is deprecated and will be removed in a future release; consider changing this to '?' instead}}
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