1//===--- ObjCRuntime.h - Objective C runtime features -----------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef CLANG_DRIVER_OBJCRUNTIME_H_
11#define CLANG_DRIVER_OBJCRUNTIME_H_
12
13namespace clang {
14namespace driver {
15
16class ObjCRuntime {
17public:
18  enum Kind { GNU, NeXT };
19private:
20  unsigned RuntimeKind : 1;
21public:
22  void setKind(Kind k) { RuntimeKind = k; }
23  Kind getKind() const { return static_cast<Kind>(RuntimeKind); }
24
25  /// True if the runtime provides native ARC entrypoints.  ARC may
26  /// still be usable without this if the tool-chain provides a
27  /// statically-linked runtime support library.
28  unsigned HasARC : 1;
29
30  /// True if the runtime supports ARC zeroing __weak.
31  unsigned HasWeak : 1;
32
33  /// True if the runtime provides the following entrypoint:
34  ///   void objc_terminate(void);
35  /// If available, this will be called instead of abort() when an
36  /// exception is thrown out of an EH cleanup.
37  unsigned HasTerminate : 1;
38
39  ObjCRuntime() : RuntimeKind(NeXT), HasARC(false), HasWeak(false),
40    HasTerminate(false) {}
41};
42
43}
44}
45
46#endif
47