[clang] [clang-tools-extra] [clangd] Support operators new and delete in textDocument/references (PR #135620)

[Christian Kandeler via cfe-commits]

https://github.com/ckandeler created https://github.com/llvm/llvm-project/pull/135620

None

>From 6fb676cec0f907658339708ee17a9e73ea8b2cc7 Mon Sep 17 00:00:00 2001
From: Christian Kandeler <christian.kandeler at qt.io>
Date: Mon, 14 Apr 2025 14:13:41 +0200
Subject: [PATCH] [clangd] Support operators new and delete in
 textDocument/references

---
 clang-tools-extra/clangd/unittests/XRefsTests.cpp | 10 +++++++++-
 clang/lib/Index/IndexBody.cpp                     | 14 ++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/clang-tools-extra/clangd/unittests/XRefsTests.cpp b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
index 693e965e78a96..1892f87c8e82a 100644
--- a/clang-tools-extra/clangd/unittests/XRefsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
@@ -2303,7 +2303,15 @@ TEST(FindReferences, WithinAST) {
         bool $decl[[operator]]"" _u^dl(unsigned long long value);
         bool x = $(x)[[1_udl]];
       )cpp",
-  };
+      R"cpp(
+        struct S {
+        public:
+          static void $decl(S)[[operator]] delete(void *);
+          static void deleteObject(S *S) {
+            $(S::deleteObject)[[de^lete]] S;
+          }
+        };
+      )cpp"};
   for (const char *Test : Tests)
     checkFindRefs(Test);
 }
diff --git a/clang/lib/Index/IndexBody.cpp b/clang/lib/Index/IndexBody.cpp
index 5e69987820730..2ed20df22bda0 100644
--- a/clang/lib/Index/IndexBody.cpp
+++ b/clang/lib/Index/IndexBody.cpp
@@ -153,6 +153,20 @@ class BodyIndexer : public RecursiveASTVisitor<BodyIndexer> {
                                     ParentDC);
   }
 
+  bool VisitCXXNewExpr(CXXNewExpr *E) {
+    if (E->isGlobalNew() || !E->getOperatorNew())
+      return true;
+    return IndexCtx.handleReference(E->getOperatorNew(), E->getBeginLoc(),
+                                    Parent, ParentDC);
+  }
+
+  bool VisitCXXDeleteExpr(CXXDeleteExpr *E) {
+    if (E->isGlobalDelete() || !E->getOperatorDelete())
+      return true;
+    return IndexCtx.handleReference(E->getOperatorDelete(), E->getBeginLoc(),
+                                    Parent, ParentDC);
+  }
+
   bool VisitLabelStmt(LabelStmt *S) {
     if (IndexCtx.shouldIndexFunctionLocalSymbols())
       return IndexCtx.handleDecl(S->getDecl());