1//===--- LangOptions.h - C Language Family Language Options -----*- 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/// \file 11/// \brief Defines the clang::LangOptions interface. 12/// 13//===----------------------------------------------------------------------===// 14 15#ifndef LLVM_CLANG_LANGOPTIONS_H 16#define LLVM_CLANG_LANGOPTIONS_H 17 18#include "clang/Basic/CommentOptions.h" 19#include "clang/Basic/LLVM.h" 20#include "clang/Basic/ObjCRuntime.h" 21#include "clang/Basic/Visibility.h" 22#include <string> 23 24namespace clang { 25 26struct SanitizerOptions { 27#define SANITIZER(NAME, ID) unsigned ID : 1; 28#include "clang/Basic/Sanitizers.def" 29 30 /// \brief Cached set of sanitizer options with all sanitizers disabled. 31 static const SanitizerOptions Disabled; 32}; 33 34/// Bitfields of LangOptions, split out from LangOptions in order to ensure that 35/// this large collection of bitfields is a trivial class type. 36class LangOptionsBase { 37public: 38 // Define simple language options (with no accessors). 39#define LANGOPT(Name, Bits, Default, Description) unsigned Name : Bits; 40#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) 41#include "clang/Basic/LangOptions.def" 42 43 SanitizerOptions Sanitize; 44protected: 45 // Define language options of enumeration type. These are private, and will 46 // have accessors (below). 47#define LANGOPT(Name, Bits, Default, Description) 48#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 49 unsigned Name : Bits; 50#include "clang/Basic/LangOptions.def" 51}; 52 53/// \brief Keeps track of the various options that can be 54/// enabled, which controls the dialect of C or C++ that is accepted. 55class LangOptions : public LangOptionsBase { 56public: 57 typedef clang::Visibility Visibility; 58 59 enum GCMode { NonGC, GCOnly, HybridGC }; 60 enum StackProtectorMode { SSPOff, SSPOn, SSPStrong, SSPReq }; 61 62 enum SignedOverflowBehaviorTy { 63 SOB_Undefined, // Default C standard behavior. 64 SOB_Defined, // -fwrapv 65 SOB_Trapping // -ftrapv 66 }; 67 68 enum PragmaMSPointersToMembersKind { 69 PPTMK_BestCase, 70 PPTMK_FullGeneralitySingleInheritance, 71 PPTMK_FullGeneralityMultipleInheritance, 72 PPTMK_FullGeneralityVirtualInheritance 73 }; 74 75 enum AddrSpaceMapMangling { ASMM_Target, ASMM_On, ASMM_Off }; 76 77public: 78 clang::ObjCRuntime ObjCRuntime; 79 80 std::string ObjCConstantStringClass; 81 82 /// \brief The name of the handler function to be called when -ftrapv is 83 /// specified. 84 /// 85 /// If none is specified, abort (GCC-compatible behaviour). 86 std::string OverflowHandler; 87 88 /// \brief The name of the current module. 89 std::string CurrentModule; 90 91 /// \brief Options for parsing comments. 92 CommentOptions CommentOpts; 93 94 LangOptions(); 95 96 // Define accessors/mutators for language options of enumeration type. 97#define LANGOPT(Name, Bits, Default, Description) 98#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 99 Type get##Name() const { return static_cast<Type>(Name); } \ 100 void set##Name(Type Value) { Name = static_cast<unsigned>(Value); } 101#include "clang/Basic/LangOptions.def" 102 103 bool isSignedOverflowDefined() const { 104 return getSignedOverflowBehavior() == SOB_Defined; 105 } 106 107 bool isSubscriptPointerArithmetic() const { 108 return ObjCRuntime.isSubscriptPointerArithmetic() && 109 !ObjCSubscriptingLegacyRuntime; 110 } 111 112 /// \brief Reset all of the options that are not considered when building a 113 /// module. 114 void resetNonModularOptions(); 115}; 116 117/// \brief Floating point control options 118class FPOptions { 119public: 120 unsigned fp_contract : 1; 121 122 FPOptions() : fp_contract(0) {} 123 124 FPOptions(const LangOptions &LangOpts) : 125 fp_contract(LangOpts.DefaultFPContract) {} 126}; 127 128/// \brief OpenCL volatile options 129class OpenCLOptions { 130public: 131#define OPENCLEXT(nm) unsigned nm : 1; 132#include "clang/Basic/OpenCLExtensions.def" 133 134 OpenCLOptions() { 135#define OPENCLEXT(nm) nm = 0; 136#include "clang/Basic/OpenCLExtensions.def" 137 } 138}; 139 140/// \brief Describes the kind of translation unit being processed. 141enum TranslationUnitKind { 142 /// \brief The translation unit is a complete translation unit. 143 TU_Complete, 144 /// \brief The translation unit is a prefix to a translation unit, and is 145 /// not complete. 146 TU_Prefix, 147 /// \brief The translation unit is a module. 148 TU_Module 149}; 150 151} // end namespace clang 152 153#endif 154