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//===--- LangOptions.h - C Language Family Language Options -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Defines the clang::LangOptions interface.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_BASIC_LANGOPTIONS_H
#define LLVM_CLANG_BASIC_LANGOPTIONS_H
#include "clang/Basic/CommentOptions.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Sanitizers.h"
#include "clang/Basic/Visibility.h"
#include <string>
#include <vector>
namespace clang {
/// Bitfields of LangOptions, split out from LangOptions in order to ensure that
/// this large collection of bitfields is a trivial class type.
class LangOptionsBase {
public:
// Define simple language options (with no accessors).
#define LANGOPT(Name, Bits, Default, Description) unsigned Name : Bits;
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description)
#include "clang/Basic/LangOptions.def"
protected:
// Define language options of enumeration type. These are private, and will
// have accessors (below).
#define LANGOPT(Name, Bits, Default, Description)
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
unsigned Name : Bits;
#include "clang/Basic/LangOptions.def"
};
/// \brief Keeps track of the various options that can be
/// enabled, which controls the dialect of C or C++ that is accepted.
class LangOptions : public LangOptionsBase {
public:
typedef clang::Visibility Visibility;
enum GCMode { NonGC, GCOnly, HybridGC };
enum StackProtectorMode { SSPOff, SSPOn, SSPStrong, SSPReq };
enum SignedOverflowBehaviorTy {
SOB_Undefined, // Default C standard behavior.
SOB_Defined, // -fwrapv
SOB_Trapping // -ftrapv
};
enum PragmaMSPointersToMembersKind {
PPTMK_BestCase,
PPTMK_FullGeneralitySingleInheritance,
PPTMK_FullGeneralityMultipleInheritance,
PPTMK_FullGeneralityVirtualInheritance
};
enum AddrSpaceMapMangling { ASMM_Target, ASMM_On, ASMM_Off };
enum MSVCMajorVersion {
MSVC2010 = 16,
MSVC2012 = 17,
MSVC2013 = 18,
MSVC2015 = 19
};
public:
/// \brief Set of enabled sanitizers.
SanitizerSet Sanitize;
/// \brief Paths to blacklist files specifying which objects
/// (files, functions, variables) should not be instrumented.
std::vector<std::string> SanitizerBlacklistFiles;
clang::ObjCRuntime ObjCRuntime;
std::string ObjCConstantStringClass;
/// \brief The name of the handler function to be called when -ftrapv is
/// specified.
///
/// If none is specified, abort (GCC-compatible behaviour).
std::string OverflowHandler;
/// \brief The name of the current module, of which the main source file
/// is a part. If CompilingModule is set, we are compiling the interface
/// of this module, otherwise we are compiling an implementation file of
/// it.
std::string CurrentModule;
/// \brief The names of any features to enable in module 'requires' decls
/// in addition to the hard-coded list in Module.cpp and the target features.
///
/// This list is sorted.
std::vector<std::string> ModuleFeatures;
/// \brief Options for parsing comments.
CommentOptions CommentOpts;
/// \brief A list of all -fno-builtin-* function names (e.g., memset).
std::vector<std::string> NoBuiltinFuncs;
/// \brief Triples of the OpenMP targets that the host code codegen should
/// take into account in order to generate accurate offloading descriptors.
std::vector<llvm::Triple> OMPTargetTriples;
/// \brief Name of the IR file that contains the result of the OpenMP target
/// host code generation.
std::string OMPHostIRFile;
LangOptions();
// Define accessors/mutators for language options of enumeration type.
#define LANGOPT(Name, Bits, Default, Description)
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
Type get##Name() const { return static_cast<Type>(Name); } \
void set##Name(Type Value) { Name = static_cast<unsigned>(Value); }
#include "clang/Basic/LangOptions.def"
bool isSignedOverflowDefined() const {
return getSignedOverflowBehavior() == SOB_Defined;
}
bool isSubscriptPointerArithmetic() const {
return ObjCRuntime.isSubscriptPointerArithmetic() &&
!ObjCSubscriptingLegacyRuntime;
}
bool isCompatibleWithMSVC(MSVCMajorVersion MajorVersion) const {
return MSCompatibilityVersion >= MajorVersion * 10000000U;
}
/// \brief Reset all of the options that are not considered when building a
/// module.
void resetNonModularOptions();
/// \brief Is this a libc/libm function that is no longer recognized as a
/// builtin because a -fno-builtin-* option has been specified?
bool isNoBuiltinFunc(const char *Name) const;
};
/// \brief Floating point control options
class FPOptions {
public:
unsigned fp_contract : 1;
FPOptions() : fp_contract(0) {}
FPOptions(const LangOptions &LangOpts) :
fp_contract(LangOpts.DefaultFPContract) {}
};
/// \brief Describes the kind of translation unit being processed.
enum TranslationUnitKind {
/// \brief The translation unit is a complete translation unit.
TU_Complete,
/// \brief The translation unit is a prefix to a translation unit, and is
/// not complete.
TU_Prefix,
/// \brief The translation unit is a module.
TU_Module
};
} // end namespace clang
#endif
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