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AST: Introduce PackElementType

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This commit is contained in:
Slava Pestov
2023-05-22 13:47:24 -04:00
parent 8f9a4cbdae
commit b2bc2c72ec
29 changed files with 274 additions and 4 deletions
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42
lib/AST/ASTContext.cpp
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@@ -416,6 +416,7 @@ struct ASTContext::Implementation {
llvm::FoldingSet<TupleType> TupleTypes;
llvm::FoldingSet<PackType> PackTypes;
llvm::FoldingSet<PackExpansionType> PackExpansionTypes;
llvm::FoldingSet<PackElementType> PackElementTypes;
llvm::DenseMap<llvm::PointerIntPair<TypeBase*, 3, unsigned>,
MetatypeType*> MetatypeTypes;
llvm::DenseMap<llvm::PointerIntPair<TypeBase*, 3, unsigned>,
@@ -3317,6 +3318,47 @@ PackType *PackType::getEmpty(const ASTContext &C) {
return cast<PackType>(CanType(C.TheEmptyPackType));
}
PackElementType::PackElementType(Type packType, unsigned level,
RecursiveTypeProperties properties,
const ASTContext *canCtx)
: TypeBase(TypeKind::PackElement, canCtx, properties),
packType(packType), level(level) {
assert(packType->isParameterPack() ||
packType->is<PackArchetypeType>() ||
packType->is<TypeVariableType>());
assert(level > 0);
}
PackElementType *PackElementType::get(Type packType, unsigned level) {
auto properties = packType->getRecursiveProperties();
auto arena = getArena(properties);
auto &context = packType->getASTContext();
llvm::FoldingSetNodeID id;
PackElementType::Profile(id, packType, level);
void *insertPos;
if (PackElementType *elementType =
context.getImpl().getArena(arena)
.PackElementTypes.FindNodeOrInsertPos(id, insertPos))
return elementType;
const ASTContext *canCtx = packType->isCanonical()
? &context : nullptr;
PackElementType *elementType =
new (context, arena) PackElementType(packType, level, properties,
canCtx);
context.getImpl().getArena(arena).PackElementTypes.InsertNode(elementType,
insertPos);
return elementType;
}
void PackElementType::Profile(llvm::FoldingSetNodeID &ID,
Type packType, unsigned level) {
ID.AddPointer(packType.getPointer());
ID.AddInteger(level);
}
CanPackType CanPackType::get(const ASTContext &C, ArrayRef<CanType> elements) {
SmallVector<Type, 8> ncElements(elements.begin(), elements.end());
return CanPackType(PackType::get(C, ncElements));