1 files changed, 15 insertions, 0 deletions
diff --git a/lib/Index/IndexingContext.cpp b/lib/Index/IndexingContext.cpp
index 85574d0a314d7..709a23657b078 100644
--- a/lib/Index/IndexingContext.cpp
+++ b/lib/Index/IndexingContext.cpp
@@ -17,6 +17,21 @@
 using namespace clang;
 using namespace index;
 
+static bool isGeneratedDecl(const Decl *D) {
+  if (auto *attr = D->getAttr<ExternalSourceSymbolAttr>()) {
+    return attr->getGeneratedDeclaration();
+  }
+  return false;
+}
+
+bool IndexingContext::shouldIndex(const Decl *D) {
+  return !isGeneratedDecl(D);
+}
+
+const LangOptions &IndexingContext::getLangOpts() const {
+  return Ctx->getLangOpts();
+}
+
 bool IndexingContext::shouldIndexFunctionLocalSymbols() const {
   return IndexOpts.IndexFunctionLocals;
 }