llvm/clang/include/clang/Basic/LangOptions.h

//===- LangOptions.h - C Language Family Language Options -------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// 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/LangStandard.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Sanitizers.h"
#include "clang/Basic/TargetCXXABI.h"
#include "clang/Basic/Visibility.h"
#include "llvm/ADT/FloatingPointMode.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/TargetParser/Triple.h"
#include <optional>
#include <string>
#include <vector>

namespace clang {

/// In the Microsoft ABI, this controls the placement of virtual displacement
/// members used to implement virtual inheritance.
enum class MSVtorDispMode { … };

/// Shader programs run in specific pipeline stages.
/// The order of these values matters, and must be kept in sync with the
/// Triple Environment enum in llvm::Triple. The ordering is enforced in
///  static_asserts in Triple.cpp and in clang/Basic/HLSLRuntime.h.
enum class ShaderStage { … };

enum class PointerAuthenticationMode : unsigned { … };

/// Bitfields of LangOptions, split out from LangOptions in order to ensure that
/// this large collection of bitfields is a trivial class type.
class LangOptionsBase { … };

/// 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 { … };

/// Floating point control options
class FPOptionsOverride;
class FPOptions { … };

/// Represents difference between two FPOptions values.
///
/// The effect of language constructs changing the set of floating point options
/// is usually a change of some FP properties while leaving others intact. This
/// class describes such changes by keeping information about what FP options
/// are overridden.
///
/// The integral set of FP options, described by the class FPOptions, may be
/// represented as a default FP option set, defined by language standard and
/// command line options, with the overrides introduced by pragmas.
///
/// The is implemented as a value of the new FPOptions plus a mask showing which
/// fields are actually set in it.
class FPOptionsOverride { … };

inline FPOptionsOverride FPOptions::getChangesFrom(const FPOptions &Base) const { … }

inline void FPOptions::applyChanges(FPOptionsOverride FPO) { … }

/// Describes the kind of translation unit being processed.
enum TranslationUnitKind { … };

} // namespace clang

#endif // LLVM_CLANG_BASIC_LANGOPTIONS_H