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 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
