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// RUN: %empty-directory(%t)
// RUN: %target-build-swift -module-name=test %s -o %t/a.out
// RUN: %target-run %t/a.out | %FileCheck %s
// REQUIRES: executable_test
// REQUIRES: CPU=arm64 || CPU=x86_64
// Check that the ASTMangler does not crash when mangling a retroactive conformance
// and also do a executable test to make sure the code works as expected.
extension Result: RandomAccessCollection, BidirectionalCollection, Collection, Sequence where Success: RandomAccessCollection, Success.Index == Int {
public typealias Element = Result<Success.Element, Failure>
public typealias Index = Int
public var startIndex: Int {
switch self {
case .success(let array):
return array.startIndex
case .failure:
return 0
}
}
public var endIndex: Int {
switch self {
case .success(let array):
return array.endIndex
case .failure:
return 1
}
}
public subscript(position: Int) -> Result<Success.Element, Failure> {
switch self {
case .success(let array):
return .success(array[position])
case .failure(let error):
return .failure(error)
}
}
}
let coll: [Int] = [4, 8, 15, 16, 23, 42]
let result: Result<[Int], Error> = .success(coll)
// CHECK: success(15)
print(result[2])
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