| // RUN: %target-parse-verify-swift |
| |
| struct IntRange<Int> : SequenceType, GeneratorType { |
| typealias Element = (Int, Int) |
| func next() -> (Int, Int)? {} |
| |
| typealias Generator = IntRange<Int> |
| func generate() -> IntRange<Int> { return self } |
| } |
| |
| func for_each(r: Range<Int>, iir: IntRange<Int>) { |
| var sum = 0 |
| |
| // Simple foreach loop, using the variable in the body |
| for i in r { |
| sum = sum + i |
| } |
| // Check scoping of variable introduced with foreach loop |
| i = 0 // expected-error{{use of unresolved identifier 'i'}} |
| |
| // For-each loops with two variables and varying degrees of typedness |
| for (i, j) in iir { |
| sum = sum + i + j |
| } |
| for (i, j) in iir { |
| sum = sum + i + j |
| } |
| for (i, j) : (Int, Int) in iir { |
| sum = sum + i + j |
| } |
| |
| // Parse errors |
| for i r { // expected-error 2{{expected ';' in 'for' statement}} expected-error {{use of unresolved identifier 'i'}} expected-error {{type 'Range<Int>' does not conform to protocol 'BooleanType'}} |
| } |
| for i in r sum = sum + i; // expected-error{{expected '{' to start the body of for-each loop}} |
| for let x in 0..<10 {} // expected-error {{'let' pattern is already in an immutable context}} {{7-11=}} |
| |
| // FIXME: rdar://problem/23378003 |
| // This will eventually become an error. |
| for var x in 0..<10 {} // expected-warning {{Use of 'var' binding here is deprecated and will be removed in a future version of Swift}} {{7-11=}} |
| } |