1 //===--- Visibility.h - Visibility enumeration and utilities ----*- 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 // This file defines the Visibility enumeration and various utility
11 // functions.
12 //
13 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_CLANG_BASIC_VISIBILITY_H
15 #define LLVM_CLANG_BASIC_VISIBILITY_H
16
17 namespace clang {
18
19 /// \link Describes the different kinds of visibility that a
20 /// declaration may have. Visibility determines how a declaration
21 /// interacts with the dynamic linker. It may also affect whether the
22 /// symbol can be found by runtime symbol lookup APIs.
23 ///
24 /// Visibility is not described in any language standard and
25 /// (nonetheless) sometimes has odd behavior. Not all platforms
26 /// support all visibility kinds.
27 enum Visibility {
28 /// Objects with "hidden" visibility are not seen by the dynamic
29 /// linker.
30 HiddenVisibility,
31
32 /// Objects with "protected" visibility are seen by the dynamic
33 /// linker but always dynamically resolve to an object within this
34 /// shared object.
35 ProtectedVisibility,
36
37 /// Objects with "default" visibility are seen by the dynamic linker
38 /// and act like normal objects.
39 DefaultVisibility
40 };
41
minVisibility(Visibility L,Visibility R)42 inline Visibility minVisibility(Visibility L, Visibility R) {
43 return L < R ? L : R;
44 }
45
46 }
47
48 #endif // LLVM_CLANG_BASIC_VISIBILITY_H
49