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      1 //===--- TypeTraits.h - C++ Type Traits Support Enumerations ----*- C++ -*-===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 ///
      9 /// \file
     10 /// Defines enumerations for the type traits support.
     11 ///
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef LLVM_CLANG_BASIC_TYPETRAITS_H
     15 #define LLVM_CLANG_BASIC_TYPETRAITS_H
     16 
     17 #include "llvm/Support/Compiler.h"
     18 
     19 namespace clang {
     20 /// Names for traits that operate specifically on types.
     21 enum TypeTrait {
     22 #define TYPE_TRAIT_1(Spelling, Name, Key) UTT_##Name,
     23 #include "clang/Basic/TokenKinds.def"
     24   UTT_Last = -1 // UTT_Last == last UTT_XX in the enum.
     25 #define TYPE_TRAIT_1(Spelling, Name, Key) +1
     26 #include "clang/Basic/TokenKinds.def"
     27   ,
     28 #define TYPE_TRAIT_2(Spelling, Name, Key) BTT_##Name,
     29 #include "clang/Basic/TokenKinds.def"
     30   BTT_Last = UTT_Last // BTT_Last == last BTT_XX in the enum.
     31 #define TYPE_TRAIT_2(Spelling, Name, Key) +1
     32 #include "clang/Basic/TokenKinds.def"
     33   ,
     34 #define TYPE_TRAIT_N(Spelling, Name, Key) TT_##Name,
     35 #include "clang/Basic/TokenKinds.def"
     36   TT_Last = BTT_Last // TT_Last == last TT_XX in the enum.
     37 #define TYPE_TRAIT_N(Spelling, Name, Key) +1
     38 #include "clang/Basic/TokenKinds.def"
     39 };
     40 
     41 /// Names for the array type traits.
     42 enum ArrayTypeTrait {
     43 #define ARRAY_TYPE_TRAIT(Spelling, Name, Key) ATT_##Name,
     44 #include "clang/Basic/TokenKinds.def"
     45   ATT_Last = -1 // ATT_Last == last ATT_XX in the enum.
     46 #define ARRAY_TYPE_TRAIT(Spelling, Name, Key) +1
     47 #include "clang/Basic/TokenKinds.def"
     48 };
     49 
     50 /// Names for the "expression or type" traits.
     51 enum UnaryExprOrTypeTrait {
     52 #define UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) UETT_##Name,
     53 #define CXX11_UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) UETT_##Name,
     54 #include "clang/Basic/TokenKinds.def"
     55   UETT_Last = -1 // UETT_Last == last UETT_XX in the enum.
     56 #define UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) +1
     57 #define CXX11_UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) +1
     58 #include "clang/Basic/TokenKinds.def"
     59 };
     60 
     61 /// Return the internal name of type trait \p T. Never null.
     62 const char *getTraitName(TypeTrait T) LLVM_READONLY;
     63 const char *getTraitName(ArrayTypeTrait T) LLVM_READONLY;
     64 const char *getTraitName(UnaryExprOrTypeTrait T) LLVM_READONLY;
     65 
     66 /// Return the spelling of the type trait \p TT. Never null.
     67 const char *getTraitSpelling(TypeTrait T) LLVM_READONLY;
     68 const char *getTraitSpelling(ArrayTypeTrait T) LLVM_READONLY;
     69 const char *getTraitSpelling(UnaryExprOrTypeTrait T) LLVM_READONLY;
     70 } // namespace clang
     71 
     72 #endif
     73