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1 //===-- Implementation of APIIndexer class --------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "APIIndexer.h"
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10
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11 #include "llvm/ADT/StringExtras.h"
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12 #include "llvm/ADT/StringRef.h"
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13 #include "llvm/TableGen/Error.h"
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14 #include "llvm/TableGen/Record.h"
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15
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16 namespace llvm_libc {
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17
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18 static const char NamedTypeClassName[] = "NamedType";
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19 static const char PtrTypeClassName[] = "PtrType";
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20 static const char RestrictedPtrTypeClassName[] = "RestrictedPtrType";
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21 static const char ConstTypeClassName[] = "ConstType";
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22 static const char StructTypeClassName[] = "Struct";
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23
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24 static const char StandardSpecClassName[] = "StandardSpec";
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25 static const char PublicAPIClassName[] = "PublicAPI";
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26
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27 static bool isa(llvm::Record *Def, llvm::Record *TypeClass) {
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28 llvm::RecordRecTy *RecordType = Def->getType();
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29 llvm::ArrayRef<llvm::Record *> Classes = RecordType->getClasses();
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30 // We want exact types. That is, we don't want the classes listed in
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31 // spec.td to be subclassed. Hence, we do not want the record |Def|
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32 // to be of more than one class type..
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33 if (Classes.size() != 1)
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34 return false;
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35 return Classes[0] == TypeClass;
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36 }
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37
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38 bool APIIndexer::isaNamedType(llvm::Record *Def) {
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39 return isa(Def, NamedTypeClass);
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40 }
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41
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42 bool APIIndexer::isaStructType(llvm::Record *Def) {
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43 return isa(Def, StructClass);
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44 }
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45
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46 bool APIIndexer::isaPtrType(llvm::Record *Def) {
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47 return isa(Def, PtrTypeClass);
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48 }
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49
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50 bool APIIndexer::isaConstType(llvm::Record *Def) {
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51 return isa(Def, ConstTypeClass);
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52 }
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53
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54 bool APIIndexer::isaRestrictedPtrType(llvm::Record *Def) {
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55 return isa(Def, RestrictedPtrTypeClass);
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56 }
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57
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58 bool APIIndexer::isaStandardSpec(llvm::Record *Def) {
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59 return isa(Def, StandardSpecClass);
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60 }
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61
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62 bool APIIndexer::isaPublicAPI(llvm::Record *Def) {
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63 return isa(Def, PublicAPIClass);
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64 }
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65
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66 std::string APIIndexer::getTypeAsString(llvm::Record *TypeRecord) {
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67 if (isaNamedType(TypeRecord) || isaStructType(TypeRecord)) {
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68 return std::string(TypeRecord->getValueAsString("Name"));
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69 } else if (isaPtrType(TypeRecord)) {
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70 return getTypeAsString(TypeRecord->getValueAsDef("PointeeType")) + " *";
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71 } else if (isaConstType(TypeRecord)) {
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72 return std::string("const ") +
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73 getTypeAsString(TypeRecord->getValueAsDef("UnqualifiedType"));
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74 } else if (isaRestrictedPtrType(TypeRecord)) {
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75 return getTypeAsString(TypeRecord->getValueAsDef("PointeeType")) +
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76 " *__restrict";
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77 } else {
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78 llvm::PrintFatalError(TypeRecord->getLoc(), "Invalid type.\n");
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79 }
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80 }
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81
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82 void APIIndexer::indexStandardSpecDef(llvm::Record *StandardSpec) {
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83 auto HeaderSpecList = StandardSpec->getValueAsListOfDefs("Headers");
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84 for (llvm::Record *HeaderSpec : HeaderSpecList) {
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85 llvm::StringRef Header = HeaderSpec->getValueAsString("Name");
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236
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86 if (!StdHeader.has_value() || Header == StdHeader) {
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221
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87 PublicHeaders.emplace(Header);
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88 auto MacroSpecList = HeaderSpec->getValueAsListOfDefs("Macros");
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89 // TODO: Trigger a fatal error on duplicate specs.
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90 for (llvm::Record *MacroSpec : MacroSpecList)
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91 MacroSpecMap[std::string(MacroSpec->getValueAsString("Name"))] =
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92 MacroSpec;
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93
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94 auto TypeSpecList = HeaderSpec->getValueAsListOfDefs("Types");
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95 for (llvm::Record *TypeSpec : TypeSpecList)
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96 TypeSpecMap[std::string(TypeSpec->getValueAsString("Name"))] = TypeSpec;
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97
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98 auto FunctionSpecList = HeaderSpec->getValueAsListOfDefs("Functions");
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99 for (llvm::Record *FunctionSpec : FunctionSpecList) {
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100 auto FunctionName = std::string(FunctionSpec->getValueAsString("Name"));
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101 FunctionSpecMap[FunctionName] = FunctionSpec;
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102 FunctionToHeaderMap[FunctionName] = std::string(Header);
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103 }
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104
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105 auto EnumerationSpecList =
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106 HeaderSpec->getValueAsListOfDefs("Enumerations");
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107 for (llvm::Record *EnumerationSpec : EnumerationSpecList) {
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108 EnumerationSpecMap[std::string(
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109 EnumerationSpec->getValueAsString("Name"))] = EnumerationSpec;
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110 }
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236
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111
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112 auto ObjectSpecList = HeaderSpec->getValueAsListOfDefs("Objects");
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113 for (llvm::Record *ObjectSpec : ObjectSpecList) {
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114 auto ObjectName = std::string(ObjectSpec->getValueAsString("Name"));
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115 ObjectSpecMap[ObjectName] = ObjectSpec;
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116 ObjectToHeaderMap[ObjectName] = std::string(Header);
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117 }
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221
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118 }
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119 }
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120 }
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121
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122 void APIIndexer::indexPublicAPIDef(llvm::Record *PublicAPI) {
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123 // While indexing the public API, we do not check if any of the entities
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124 // requested is from an included standard. Such a check is done while
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125 // generating the API.
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126 auto MacroDefList = PublicAPI->getValueAsListOfDefs("Macros");
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127 for (llvm::Record *MacroDef : MacroDefList)
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128 MacroDefsMap[std::string(MacroDef->getValueAsString("Name"))] = MacroDef;
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129
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130 auto TypeList = PublicAPI->getValueAsListOfStrings("Types");
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131 for (llvm::StringRef TypeName : TypeList)
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132 RequiredTypes.insert(std::string(TypeName));
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221
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133
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134 auto StructList = PublicAPI->getValueAsListOfStrings("Structs");
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135 for (llvm::StringRef StructName : StructList)
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136 Structs.insert(std::string(StructName));
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137
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138 auto FunctionList = PublicAPI->getValueAsListOfStrings("Functions");
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139 for (llvm::StringRef FunctionName : FunctionList)
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140 Functions.insert(std::string(FunctionName));
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141
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142 auto EnumerationList = PublicAPI->getValueAsListOfStrings("Enumerations");
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143 for (llvm::StringRef EnumerationName : EnumerationList)
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144 Enumerations.insert(std::string(EnumerationName));
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236
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145
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146 auto ObjectList = PublicAPI->getValueAsListOfStrings("Objects");
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147 for (llvm::StringRef ObjectName : ObjectList)
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148 Objects.insert(std::string(ObjectName));
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221
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149 }
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150
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151 void APIIndexer::index(llvm::RecordKeeper &Records) {
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152 NamedTypeClass = Records.getClass(NamedTypeClassName);
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153 PtrTypeClass = Records.getClass(PtrTypeClassName);
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154 RestrictedPtrTypeClass = Records.getClass(RestrictedPtrTypeClassName);
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155 StructClass = Records.getClass(StructTypeClassName);
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156 ConstTypeClass = Records.getClass(ConstTypeClassName);
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157 StandardSpecClass = Records.getClass(StandardSpecClassName);
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158 PublicAPIClass = Records.getClass(PublicAPIClassName);
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159
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160 const auto &DefsMap = Records.getDefs();
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161 for (auto &Pair : DefsMap) {
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162 llvm::Record *Def = Pair.second.get();
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163 if (isaStandardSpec(Def))
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164 indexStandardSpecDef(Def);
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165 if (isaPublicAPI(Def)) {
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236
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166 if (!StdHeader.has_value() ||
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167 Def->getValueAsString("HeaderName") == StdHeader)
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168 indexPublicAPIDef(Def);
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169 }
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170 }
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171 }
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172
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173 } // namespace llvm_libc
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