File: Availability.mm

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (54 lines) | stat: -rw-r--r-- 1,901 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
//===--- Availability.mm - Swift Language API Availability Support --------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Implementation of run-time API availability queries.
//
//===----------------------------------------------------------------------===//

#include "swift/Runtime/Config.h"

#if SWIFT_OBJC_INTEROP && defined(SWIFT_RUNTIME_OS_VERSIONING)
#include "swift/Basic/Lazy.h"
#include "swift/Runtime/Debug.h"
#include "swift/shims/FoundationShims.h"
#include <TargetConditionals.h>

struct os_system_version_s {
    unsigned int major;
    unsigned int minor;
    unsigned int patch;
};

// This is in libSystem, so it's OK to refer to it directly here
extern "C" int os_system_version_get_current_version(struct os_system_version_s * _Nonnull) SWIFT_RUNTIME_WEAK_IMPORT;

static os_system_version_s getOSVersion() {
  struct os_system_version_s vers = { 0, 0, 0 };
  os_system_version_get_current_version(&vers);
  return vers;
}

using namespace swift;

/// Return the version of the operating system currently running for use in
/// API availability queries.
///
/// This is ABI and cannot be removed. Even though _stdlib_isOSVersionAtLeast()
/// is no longer inlinable, is previously was and so calls to this method
/// have been inlined into shipped apps.
_SwiftNSOperatingSystemVersion _swift_stdlib_operatingSystemVersion() {
  os_system_version_s version = SWIFT_LAZY_CONSTANT(getOSVersion());

  return { (int)version.major, (int)version.minor, (int)version.patch };
}
#endif