1 //===--- ExceptionSpecificationType.h ---------------------------*- 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 ExceptionSpecificationType enumeration and various 11 // utility functions. 12 // 13 //===----------------------------------------------------------------------===// 14 #ifndef LLVM_CLANG_BASIC_EXCEPTIONSPECIFICATIONTYPE_H 15 #define LLVM_CLANG_BASIC_EXCEPTIONSPECIFICATIONTYPE_H 16 17 namespace clang { 18 19 /// \brief The various types of exception specifications that exist in C++11. 20 enum ExceptionSpecificationType { 21 EST_None, ///< no exception specification 22 EST_DynamicNone, ///< throw() 23 EST_Dynamic, ///< throw(T1, T2) 24 EST_MSAny, ///< Microsoft throw(...) extension 25 EST_BasicNoexcept, ///< noexcept 26 EST_ComputedNoexcept, ///< noexcept(expression) 27 EST_Delayed, ///< not known yet 28 EST_Uninstantiated ///< not instantiated yet 29 }; 30 31 inline bool isDynamicExceptionSpec(ExceptionSpecificationType ESpecType) { 32 return ESpecType >= EST_DynamicNone && ESpecType <= EST_MSAny; 33 } 34 35 inline bool isNoexceptExceptionSpec(ExceptionSpecificationType ESpecType) { 36 return ESpecType == EST_BasicNoexcept || ESpecType == EST_ComputedNoexcept; 37 } 38 39 /// \brief Possible results from evaluation of a noexcept expression. 40 enum CanThrowResult { 41 CT_Cannot, 42 CT_Dependent, 43 CT_Can 44 }; 45 46 inline CanThrowResult mergeCanThrow(CanThrowResult CT1, CanThrowResult CT2) { 47 // CanThrowResult constants are ordered so that the maximum is the correct 48 // merge result. 49 return CT1 > CT2 ? CT1 : CT2; 50 } 51 52 } // end namespace clang 53 54 #endif // LLVM_CLANG_BASIC_EXCEPTIONSPECIFICATIONTYPE_H 55
