clang/lib/Basic/TypeTraits.cpp

   1 //===--- TypeTraits.cpp - Type Traits Support -----------------------------===//
   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 //  This file implements the type traits support functions.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "clang/Basic/TypeTraits.h"
  14 #include "llvm/Support/ErrorHandling.h"
  15 #include <cassert>
  16 using namespace clang;
  17
  18 static constexpr const char *TypeTraitNames[] = {
  19 #define TYPE_TRAIT_1(Spelling, Name, Key) #Name,
  20 #include "clang/Basic/TokenKinds.def"
  21 #define TYPE_TRAIT_2(Spelling, Name, Key) #Name,
  22 #include "clang/Basic/TokenKinds.def"
  23 #define TYPE_TRAIT_N(Spelling, Name, Key) #Name,
  24 #include "clang/Basic/TokenKinds.def"
  25 };
  26
  27 static constexpr const char *TypeTraitSpellings[] = {
  28 #define TYPE_TRAIT_1(Spelling, Name, Key) #Spelling,
  29 #include "clang/Basic/TokenKinds.def"
  30 #define TYPE_TRAIT_2(Spelling, Name, Key) #Spelling,
  31 #include "clang/Basic/TokenKinds.def"
  32 #define TYPE_TRAIT_N(Spelling, Name, Key) #Spelling,
  33 #include "clang/Basic/TokenKinds.def"
  34 };
  35
  36 static constexpr const char *ArrayTypeTraitNames[] = {
  37 #define ARRAY_TYPE_TRAIT(Spelling, Name, Key) #Name,
  38 #include "clang/Basic/TokenKinds.def"
  39 };
  40
  41 static constexpr const char *ArrayTypeTraitSpellings[] = {
  42 #define ARRAY_TYPE_TRAIT(Spelling, Name, Key) #Spelling,
  43 #include "clang/Basic/TokenKinds.def"
  44 };
  45
  46 static constexpr const char *UnaryExprOrTypeTraitNames[] = {
  47 #define UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) #Name,
  48 #define CXX11_UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) #Name,
  49 #include "clang/Basic/TokenKinds.def"
  50 };
  51
  52 static constexpr const char *UnaryExprOrTypeTraitSpellings[] = {
  53 #define UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) #Spelling,
  54 #define CXX11_UNARY_EXPR_OR_TYPE_TRAIT(Spelling, Name, Key) #Spelling,
  55 #include "clang/Basic/TokenKinds.def"
  56 };
  57
  58 static constexpr const unsigned TypeTraitArities[] = {
  59 #define TYPE_TRAIT_1(Spelling, Name, Key) 1,
  60 #include "clang/Basic/TokenKinds.def"
  61 #define TYPE_TRAIT_2(Spelling, Name, Key) 2,
  62 #include "clang/Basic/TokenKinds.def"
  63 #define TYPE_TRAIT_N(Spelling, Name, Key) 0,
  64 #include "clang/Basic/TokenKinds.def"
  65 };
  66
  67 const char *clang::getTraitName(TypeTrait T) {
  68   assert(T <= TT_Last && "invalid enum value!");
  69   return TypeTraitNames[T];
  70 }
  71
  72 const char *clang::getTraitName(ArrayTypeTrait T) {
  73   assert(T <= ATT_Last && "invalid enum value!");
  74   return ArrayTypeTraitNames[T];
  75 }
  76
  77 const char *clang::getTraitName(UnaryExprOrTypeTrait T) {
  78   assert(T <= UETT_Last && "invalid enum value!");
  79   return UnaryExprOrTypeTraitNames[T];
  80 }
  81
  82 const char *clang::getTraitSpelling(TypeTrait T) {
  83   assert(T <= TT_Last && "invalid enum value!");
  84   return TypeTraitSpellings[T];
  85 }
  86
  87 const char *clang::getTraitSpelling(ArrayTypeTrait T) {
  88   assert(T <= ATT_Last && "invalid enum value!");
  89   return ArrayTypeTraitSpellings[T];
  90 }
  91
  92 const char *clang::getTraitSpelling(UnaryExprOrTypeTrait T) {
  93   assert(T <= UETT_Last && "invalid enum value!");
  94   return UnaryExprOrTypeTraitSpellings[T];
  95 }
  96
  97 unsigned clang::getTypeTraitArity(TypeTrait T) {
  98   assert(T <= TT_Last && "invalid enum value!");
  99   return TypeTraitArities[T];
 100 }