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