TypeTraits.h

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//===--- TypeTraits.h - C++ Type Traits Support Enumerations ----*- 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 enumerations for the type traits support.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_BASIC_TYPETRAITS_H
#define LLVM_CLANG_BASIC_TYPETRAITS_H

namespace clang {

  /// Names for traits that operate specifically on types.
  enum TypeTrait {
    UTT_HasNothrowAssign,
    UTT_HasNothrowMoveAssign,
    UTT_HasNothrowCopy,
    UTT_HasNothrowConstructor,
    UTT_HasTrivialAssign,
    UTT_HasTrivialMoveAssign,
    UTT_HasTrivialCopy,
    UTT_HasTrivialDefaultConstructor,
    UTT_HasTrivialMoveConstructor,
    UTT_HasTrivialDestructor,
    UTT_HasVirtualDestructor,
    UTT_IsAbstract,
    UTT_IsAggregate,
    UTT_IsArithmetic,
    UTT_IsArray,
    UTT_IsClass,
    UTT_IsCompleteType,
    UTT_IsCompound,
    UTT_IsConst,
    UTT_IsDestructible,
    UTT_IsEmpty,
    UTT_IsEnum,
    UTT_IsFinal,
    UTT_IsFloatingPoint,
    UTT_IsFunction,
    UTT_IsFundamental,
    UTT_IsIntegral,
    UTT_IsInterfaceClass,
    UTT_IsLiteral,
    UTT_IsLvalueReference,
    UTT_IsMemberFunctionPointer,
    UTT_IsMemberObjectPointer,
    UTT_IsMemberPointer,
    UTT_IsNothrowDestructible,
    UTT_IsObject,
    UTT_IsPOD,
    UTT_IsPointer,
    UTT_IsPolymorphic,
    UTT_IsReference,
    UTT_IsRvalueReference,
    UTT_IsScalar,
    UTT_IsSealed,
    UTT_IsSigned,
    UTT_IsStandardLayout,
    UTT_IsTrivial,
    UTT_IsTriviallyCopyable,
    UTT_IsTriviallyDestructible,
    UTT_IsUnion,
    UTT_IsUnsigned,
    UTT_IsVoid,
    UTT_IsVolatile,
    UTT_HasUniqueObjectRepresentations,
    UTT_Last = UTT_HasUniqueObjectRepresentations,
    BTT_IsBaseOf,
    BTT_IsConvertible,
    BTT_IsConvertibleTo,
    BTT_IsSame,
    BTT_TypeCompatible,
    BTT_IsAssignable,
    BTT_IsNothrowAssignable,
    BTT_IsTriviallyAssignable,
    BTT_ReferenceBindsToTemporary,
    BTT_Last = BTT_ReferenceBindsToTemporary,
    TT_IsConstructible,
    TT_IsNothrowConstructible,
    TT_IsTriviallyConstructible
  };

  /// Names for the array type traits.
  enum ArrayTypeTrait {
    ATT_ArrayRank,
    ATT_ArrayExtent
  };

  /// Names for the "expression or type" traits.
  enum UnaryExprOrTypeTrait {
    UETT_SizeOf,
    /// Used for C's _Alignof and C++'s alignof.
    /// _Alignof and alignof return the required ABI alignment.
    UETT_AlignOf,
    UETT_VecStep,
    UETT_OpenMPRequiredSimdAlign,
    /// Used for GCC's __alignof.
    /// __alignof returns the preferred alignment of a type, the alignment
    /// clang will attempt to give an object of the type if allowed by ABI.
    UETT_PreferredAlignOf,
  };
}

#endif