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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.
//
//===----------------------------------------------------------------------===//
//
// This file defines the LangOptions interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LANGOPTIONS_H
#define LLVM_CLANG_LANGOPTIONS_H
#include <string>
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Visibility.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
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"
};
/// LangOptions - This class keeps track of the various options that can be
/// enabled, which controls the dialect of C that is accepted.
class LangOptions : public RefCountedBase<LangOptions>, public LangOptionsBase {
public:
typedef clang::Visibility Visibility;
enum GCMode { NonGC, GCOnly, HybridGC };
enum StackProtectorMode { SSPOff, SSPOn, SSPReq };
enum SignedOverflowBehaviorTy {
SOB_Undefined, // Default C standard behavior.
SOB_Defined, // -fwrapv
SOB_Trapping // -ftrapv
};
public:
std::string ObjCConstantStringClass;
/// 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.
std::string CurrentModule;
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;
}
/// \brief Reset all of the options that are not considered when building a
/// module.
void resetNonModularOptions();
};
/// Floating point control options
class FPOptions {
public:
unsigned fp_contract : 1;
FPOptions() : fp_contract(0) {}
FPOptions(const LangOptions &LangOpts) :
fp_contract(LangOpts.DefaultFPContract) {}
};
/// OpenCL volatile options
class OpenCLOptions {
public:
#define OPENCLEXT(nm) unsigned nm : 1;
#include "clang/Basic/OpenCLExtensions.def"
OpenCLOptions() {
#define OPENCLEXT(nm) nm = 0;
#include "clang/Basic/OpenCLExtensions.def"
}
};
/// \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
};
/// \brief
} // end namespace clang
#endif
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