sammccall added a comment.
Do I understand the intent of this change correctly?
- friend decls that are not definitions should be ignored for indexing purposes
- this means they should never be selected as canonical decl
- if the friend decl is the only decl, then the symbol should not be indexed
if so, that makes sense to me. I think the comments could make this a little
clearer, but it's not too bad.
================
Comment at: clangd/index/SymbolCollector.cpp:297
+ // If OrigD is an object of a friend declaration, skip it.
+ if (ASTNode.OrigD->getFriendObjectKind() !=
+ Decl::FriendObjectKind::FOK_None)
----------------
this seems suspect, we're going to treat the third decl in `friend X; X; friend
X` differently from that in `X; friend X; friend X;`.
Why? i.e. why is the inner check necessary and why does it treat the original
(meaning first, I think) decl specially?
================
Comment at: unittests/clangd/SymbolCollectorTests.cpp:816
+TEST_F(SymbolCollectorTest, DoNotIndexSymbolsInFriendDecl) {
+ Annotations Header(R"(
+ namespace nx {
----------------
Can you also test that:
- if a friend decl (non-definition) comes first, followed by a non-friend decl
(non-definition), then the decl *is* indexed. (maybe just drop the definition
from foo, since it's otherwise the same as Y)
- if a friend decl has a definition, and there is no other declaration, then
the decl *is* indexed (and the friend decl is canonical)
Repository:
rCTE Clang Tools Extra
https://reviews.llvm.org/D47623
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