clang  9.0.0svn
ExceptionSpecificationType.h
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1 //===--- ExceptionSpecificationType.h ---------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// 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 /// The various types of exception specifications that exist in C++11.
21  EST_None, ///< no exception specification
22  EST_DynamicNone, ///< throw()
23  EST_Dynamic, ///< throw(T1, T2)
24  EST_MSAny, ///< Microsoft throw(...) extension
25  EST_NoThrow, ///< Microsoft __declspec(nothrow) extension
26  EST_BasicNoexcept, ///< noexcept
27  EST_DependentNoexcept,///< noexcept(expression), value-dependent
28  EST_NoexceptFalse, ///< noexcept(expression), evals to 'false'
29  EST_NoexceptTrue, ///< noexcept(expression), evals to 'true'
30  EST_Unevaluated, ///< not evaluated yet, for special member function
31  EST_Uninstantiated, ///< not instantiated yet
32  EST_Unparsed ///< not parsed yet
33 };
34 
36  return ESpecType >= EST_DynamicNone && ESpecType <= EST_MSAny;
37 }
38 
40  return ESpecType >= EST_DependentNoexcept &&
41  ESpecType <= EST_NoexceptTrue;
42 }
43 
45  return ESpecType == EST_BasicNoexcept || ESpecType == EST_NoThrow ||
46  isComputedNoexcept(ESpecType);
47 }
48 
50  return ESpecType == EST_Unevaluated || ESpecType == EST_Uninstantiated;
51 }
52 
53 /// Possible results from evaluation of a noexcept expression.
58 };
59 
61  // CanThrowResult constants are ordered so that the maximum is the correct
62  // merge result.
63  return CT1 > CT2 ? CT1 : CT2;
64 }
65 
66 } // end namespace clang
67 
68 #endif // LLVM_CLANG_BASIC_EXCEPTIONSPECIFICATIONTYPE_H
bool isDynamicExceptionSpec(ExceptionSpecificationType ESpecType)
no exception specification
noexcept(expression), value-dependent
bool isNoexceptExceptionSpec(ExceptionSpecificationType ESpecType)
Microsoft throw(...) extension.
CanThrowResult mergeCanThrow(CanThrowResult CT1, CanThrowResult CT2)
noexcept(expression), evals to &#39;false&#39;
CanThrowResult
Possible results from evaluation of a noexcept expression.
bool isComputedNoexcept(ExceptionSpecificationType ESpecType)
Dataflow Directional Tag Classes.
not evaluated yet, for special member function
ExceptionSpecificationType
The various types of exception specifications that exist in C++11.
Microsoft __declspec(nothrow) extension.
bool isUnresolvedExceptionSpec(ExceptionSpecificationType ESpecType)
noexcept(expression), evals to &#39;true&#39;