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//===-- Implementation of APIIndexer class --------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "APIIndexer.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
namespace llvm_libc {
static const char NamedTypeClassName[] = "NamedType";
static const char PtrTypeClassName[] = "PtrType";
static const char RestrictedPtrTypeClassName[] = "RestrictedPtrType";
static const char ConstTypeClassName[] = "ConstType";
static const char StructTypeClassName[] = "Struct";
static const char StandardSpecClassName[] = "StandardSpec";
static const char PublicAPIClassName[] = "PublicAPI";
static bool isa(llvm::Record *Def, llvm::Record *TypeClass) {
llvm::RecordRecTy *RecordType = Def->getType();
llvm::ArrayRef<llvm::Record *> Classes = RecordType->getClasses();
// We want exact types. That is, we don't want the classes listed in
// spec.td to be subclassed. Hence, we do not want the record |Def|
// to be of more than one class type..
if (Classes.size() != 1)
return false;
return Classes[0] == TypeClass;
}
bool APIIndexer::isaNamedType(llvm::Record *Def) {
return isa(Def, NamedTypeClass);
}
bool APIIndexer::isaStructType(llvm::Record *Def) {
return isa(Def, StructClass);
}
bool APIIndexer::isaPtrType(llvm::Record *Def) {
return isa(Def, PtrTypeClass);
}
bool APIIndexer::isaConstType(llvm::Record *Def) {
return isa(Def, ConstTypeClass);
}
bool APIIndexer::isaRestrictedPtrType(llvm::Record *Def) {
return isa(Def, RestrictedPtrTypeClass);
}
bool APIIndexer::isaStandardSpec(llvm::Record *Def) {
return isa(Def, StandardSpecClass);
}
bool APIIndexer::isaPublicAPI(llvm::Record *Def) {
return isa(Def, PublicAPIClass);
}
std::string APIIndexer::getTypeAsString(llvm::Record *TypeRecord) {
if (isaNamedType(TypeRecord) || isaStructType(TypeRecord)) {
return std::string(TypeRecord->getValueAsString("Name"));
} else if (isaPtrType(TypeRecord)) {
return getTypeAsString(TypeRecord->getValueAsDef("PointeeType")) + " *";
} else if (isaConstType(TypeRecord)) {
return std::string("const ") +
getTypeAsString(TypeRecord->getValueAsDef("UnqualifiedType"));
} else if (isaRestrictedPtrType(TypeRecord)) {
return getTypeAsString(TypeRecord->getValueAsDef("PointeeType")) +
" *__restrict";
} else {
llvm::PrintFatalError(TypeRecord->getLoc(), "Invalid type.\n");
}
}
void APIIndexer::indexStandardSpecDef(llvm::Record *StandardSpec) {
auto HeaderSpecList = StandardSpec->getValueAsListOfDefs("Headers");
for (llvm::Record *HeaderSpec : HeaderSpecList) {
llvm::StringRef Header = HeaderSpec->getValueAsString("Name");
if (!StdHeader.hasValue() || Header == StdHeader) {
PublicHeaders.emplace(Header);
auto MacroSpecList = HeaderSpec->getValueAsListOfDefs("Macros");
// TODO: Trigger a fatal error on duplicate specs.
for (llvm::Record *MacroSpec : MacroSpecList)
MacroSpecMap[std::string(MacroSpec->getValueAsString("Name"))] =
MacroSpec;
auto TypeSpecList = HeaderSpec->getValueAsListOfDefs("Types");
for (llvm::Record *TypeSpec : TypeSpecList)
TypeSpecMap[std::string(TypeSpec->getValueAsString("Name"))] = TypeSpec;
auto FunctionSpecList = HeaderSpec->getValueAsListOfDefs("Functions");
for (llvm::Record *FunctionSpec : FunctionSpecList) {
FunctionSpecMap[std::string(FunctionSpec->getValueAsString("Name"))] =
FunctionSpec;
}
auto EnumerationSpecList =
HeaderSpec->getValueAsListOfDefs("Enumerations");
for (llvm::Record *EnumerationSpec : EnumerationSpecList) {
EnumerationSpecMap[std::string(
EnumerationSpec->getValueAsString("Name"))] = EnumerationSpec;
}
}
}
}
void APIIndexer::indexPublicAPIDef(llvm::Record *PublicAPI) {
// While indexing the public API, we do not check if any of the entities
// requested is from an included standard. Such a check is done while
// generating the API.
auto MacroDefList = PublicAPI->getValueAsListOfDefs("Macros");
for (llvm::Record *MacroDef : MacroDefList)
MacroDefsMap[std::string(MacroDef->getValueAsString("Name"))] = MacroDef;
auto TypeDeclList = PublicAPI->getValueAsListOfDefs("TypeDeclarations");
for (llvm::Record *TypeDecl : TypeDeclList)
TypeDeclsMap[std::string(TypeDecl->getValueAsString("Name"))] = TypeDecl;
auto StructList = PublicAPI->getValueAsListOfStrings("Structs");
for (llvm::StringRef StructName : StructList)
Structs.insert(std::string(StructName));
auto FunctionList = PublicAPI->getValueAsListOfStrings("Functions");
for (llvm::StringRef FunctionName : FunctionList)
Functions.insert(std::string(FunctionName));
auto EnumerationList = PublicAPI->getValueAsListOfStrings("Enumerations");
for (llvm::StringRef EnumerationName : EnumerationList)
Enumerations.insert(std::string(EnumerationName));
}
void APIIndexer::index(llvm::RecordKeeper &Records) {
NamedTypeClass = Records.getClass(NamedTypeClassName);
PtrTypeClass = Records.getClass(PtrTypeClassName);
RestrictedPtrTypeClass = Records.getClass(RestrictedPtrTypeClassName);
StructClass = Records.getClass(StructTypeClassName);
ConstTypeClass = Records.getClass(ConstTypeClassName);
StandardSpecClass = Records.getClass(StandardSpecClassName);
PublicAPIClass = Records.getClass(PublicAPIClassName);
const auto &DefsMap = Records.getDefs();
for (auto &Pair : DefsMap) {
llvm::Record *Def = Pair.second.get();
if (isaStandardSpec(Def))
indexStandardSpecDef(Def);
if (isaPublicAPI(Def)) {
if (!StdHeader.hasValue() ||
Def->getValueAsString("HeaderName") == StdHeader)
indexPublicAPIDef(Def);
}
}
}
} // namespace llvm_libc
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