| //===----------------------------------------------------------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| import SwiftShims |
| |
| /// Returns 1 if the running OS version is greater than or equal to |
| /// major.minor.patchVersion and 0 otherwise. |
| /// |
| /// This is a magic entry point known to the compiler. It is called in |
| /// generated code for API availability checking. |
| @_semantics("availability.osversion") |
| @inlinable |
| public func _stdlib_isOSVersionAtLeast( |
| _ major: Builtin.Word, |
| _ minor: Builtin.Word, |
| _ patch: Builtin.Word |
| ) -> Builtin.Int1 { |
| #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS) |
| // The call to _swift_stdlib_operatingSystemVersion is used as an indicator |
| // that this function was called by a compiler optimization pass. If it is |
| // replaced that pass needs to be updated. |
| let runningVersion = _swift_stdlib_operatingSystemVersion() |
| |
| let result = |
| (runningVersion.majorVersion,runningVersion.minorVersion,runningVersion.patchVersion) |
| >= (Int(major),Int(minor),Int(patch)) |
| |
| return result._value |
| #else |
| // FIXME: As yet, there is no obvious versioning standard for platforms other |
| // than Darwin-based OSes, so we just assume false for now. |
| // rdar://problem/18881232 |
| return false._value |
| #endif |
| } |
