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 71 /// Return the arity of the type trait \p T. 72 unsigned getTypeTraitArity(TypeTrait T) LLVM_READONLY; 73 74 } // namespace clang 75 76 #endif 77