| // RUN: %target-swift-frontend -typecheck -verify -swift-version 3 %s |
| |
| let s = "Hello" |
| let ss = s[s.startIndex..<s.endIndex] |
| |
| // CTP_Initialization |
| do { |
| let s1: String = { return ss }() |
| _ = s1 |
| } |
| |
| // CTP_ReturnStmt |
| do { |
| func returnsAString() -> String { |
| return ss |
| } |
| } |
| |
| // CTP_ThrowStmt |
| // Doesn't really make sense for this fix-it - see case in diagnoseContextualConversionError: |
| // The conversion destination of throw is always ErrorType (at the moment) |
| // if this ever expands, this should be a specific form like () is for |
| // return. |
| |
| // CTP_EnumCaseRawValue |
| // Substrings can't be raw values because they aren't literals. |
| |
| // CTP_DefaultParameter |
| do { |
| func foo(x: String = ss) {} |
| } |
| |
| // CTP_CalleeResult |
| do { |
| func getSubstring() -> Substring { return ss } // expected-error {{cannot convert return expression of type 'String' to return type 'Substring'}} |
| let gottenString : String = getSubstring() // expected-error {{cannot convert value of type 'Substring' to specified type 'String'}} {{31-31=String(}} {{45-45=)}} |
| _ = gottenString |
| } |
| |
| // CTP_CallArgument |
| do { |
| func takesAString(_ s: String) {} |
| takesAString(ss) |
| } |
| |
| // CTP_ClosureResult |
| do { |
| [ss].map { (x: Substring) -> String in x } // expected-error {{'Substring' is not convertible to 'String'}} |
| } |
| |
| // CTP_ArrayElement |
| do { |
| let a: [String] = [ ss ] |
| _ = a |
| } |
| |
| // CTP_DictionaryKey |
| do { |
| let d: [ String : String ] = [ ss : s ] |
| _ = d |
| } |
| |
| // CTP_DictionaryValue |
| do { |
| let d: [ String : String ] = [ s : ss ] |
| _ = d |
| } |
| |
| // CTP_CoerceOperand |
| do { |
| let s1: String = ss as String |
| _ = s1 |
| } |
| |
| // CTP_AssignSource |
| do { |
| let s1: String = ss |
| _ = s1 |
| } |
| |
| func takesString(_ s: String) {} |
| |
| func apply(_ fn: (String) -> (), _ s: String) { |
| fn(s[s.startIndex..<s.endIndex]) |
| let _: String = s[s.startIndex..<s.endIndex] |
| _ = s[s.startIndex..<s.endIndex] as String |
| } |