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AST: Introduce abstraction for extension/type decl inheritance clauses.

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Wrap the `InheritedEntry` array available on both `ExtensionDecl` and
`TypeDecl` in a new `InheritedTypes` class. This class will provide shared
conveniences for working with inherited type clauses. NFC.
This commit is contained in:
Allan Shortlidge
2023-09-05 17:08:05 -07:00
parent 2c3c3c1933
commit 0dd8f4c492
33 changed files with 221 additions and 163 deletions
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32
lib/AST/Decl.cpp
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@@ -1527,6 +1527,38 @@ InheritedEntry::InheritedEntry(const TypeLoc &typeLoc)
isUnchecked = typeRepr->findUncheckedAttrLoc().isValid();
}
InheritedTypes::InheritedTypes(
llvm::PointerUnion<const TypeDecl *, const ExtensionDecl *> decl)
: Decl(decl) {
if (auto *typeDecl = decl.dyn_cast<const TypeDecl *>()) {
Entries = typeDecl->Inherited;
} else {
Entries = decl.get<const ExtensionDecl *>()->Inherited;
}
}
InheritedTypes::InheritedTypes(const class Decl *decl) {
if (auto typeDecl = dyn_cast<TypeDecl>(decl)) {
Decl = typeDecl;
Entries = typeDecl->Inherited;
} else if (auto extensionDecl = dyn_cast<ExtensionDecl>(decl)) {
Decl = extensionDecl;
Entries = extensionDecl->Inherited;
} else {
Decl = nullptr;
Entries = ArrayRef<InheritedEntry>();
}
}
InheritedTypes::InheritedTypes(const TypeDecl *typeDecl) : Decl(typeDecl) {
Entries = typeDecl->Inherited;
}
InheritedTypes::InheritedTypes(const ExtensionDecl *extensionDecl)
: Decl(extensionDecl) {
Entries = extensionDecl->Inherited;
}
ExtensionDecl::ExtensionDecl(SourceLoc extensionLoc,
TypeRepr *extendedType,
ArrayRef<InheritedEntry> inherited,