[PATCH] D87225: [clangd] When finding refs for a renaming alias, do not return refs to underlying decls
Nathan Ridge via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Sep 28 18:17:29 PDT 2020
nridge updated this revision to Diff 294851.
nridge marked 2 inline comments as done.
nridge added a comment.
Address final review comments
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D87225/new/
https://reviews.llvm.org/D87225
Files:
clang-tools-extra/clangd/XRefs.cpp
clang-tools-extra/clangd/unittests/XRefsTests.cpp
Index: clang-tools-extra/clangd/unittests/XRefsTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/XRefsTests.cpp
+++ clang-tools-extra/clangd/unittests/XRefsTests.cpp
@@ -1582,6 +1582,13 @@
f.[[^~]]Foo();
}
)cpp",
+ R"cpp(// Renaming alias
+ template <typename> class Vector {};
+ using [[^X]] = Vector<int>;
+ [[X]] x1;
+ Vector<int> x2;
+ Vector<double> y;
+ )cpp",
};
for (const char *Test : Tests) {
Annotations T(Test);
Index: clang-tools-extra/clangd/XRefs.cpp
===================================================================
--- clang-tools-extra/clangd/XRefs.cpp
+++ clang-tools-extra/clangd/XRefs.cpp
@@ -1140,11 +1140,21 @@
} else {
// Handle references to Decls.
- // We also show references to the targets of using-decls, so we include
- // DeclRelation::Underlying.
- DeclRelationSet Relations = DeclRelation::TemplatePattern |
- DeclRelation::Alias | DeclRelation::Underlying;
- auto Decls = getDeclAtPosition(AST, *CurLoc, Relations);
+ DeclRelationSet Relations =
+ DeclRelation::TemplatePattern | DeclRelation::Alias;
+ std::vector<const NamedDecl *> Decls =
+ getDeclAtPosition(AST, *CurLoc, Relations);
+ std::vector<const NamedDecl *> NonrenamingAliasUnderlyingDecls;
+ // If the results include a *non-renaming* alias, get its
+ // underlying decls as well. (See similar logic in locateASTReferent()).
+ for (const NamedDecl *D : Decls) {
+ if (llvm::isa<UsingDecl>(D) || llvm::isa<UnresolvedUsingValueDecl>(D)) {
+ for (const NamedDecl *AD :
+ getDeclAtPosition(AST, *CurLoc, DeclRelation::Underlying))
+ NonrenamingAliasUnderlyingDecls.push_back(AD);
+ }
+ }
+ llvm::copy(NonrenamingAliasUnderlyingDecls, std::back_inserter(Decls));
// We traverse the AST to find references in the main file.
auto MainFileRefs = findRefs(Decls, AST);
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