[index] Introduce 'ProtocolInterface' as part of SymbolPropertySet

This is useful to directly infer that a method or property is from a protocol interface
at the point of the symbol occurrences.

llvm-svn: 340696

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/Index/IndexSymbol.cpp b/clang/lib/Index/IndexSymbol.cpp
index 03b55ffe8a4..1cdc0984f78 100644
--- a/clang/lib/Index/IndexSymbol.cpp
+++ b/clang/lib/Index/IndexSymbol.cpp
@@ -96,6 +96,9 @@ SymbolInfo index::getSymbolInfo(const Decl *D) {
   if (isFunctionLocalSymbol(D)) {
     Info.Properties |= (SymbolPropertySet)SymbolProperty::Local;
   }
+  if (isa<ObjCProtocolDecl>(D->getDeclContext())) {
+    Info.Properties |= (SymbolPropertySet)SymbolProperty::ProtocolInterface;
+  }
 
   if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
     switch (TD->getTagKind()) {
@@ -519,6 +522,7 @@ void index::applyForEachSymbolProperty(SymbolPropertySet Props,
   APPLY_FOR_PROPERTY(IBOutletCollection);
   APPLY_FOR_PROPERTY(GKInspectable);
   APPLY_FOR_PROPERTY(Local);
+  APPLY_FOR_PROPERTY(ProtocolInterface);
 
 #undef APPLY_FOR_PROPERTY
 }
@@ -539,6 +543,7 @@ void index::printSymbolProperties(SymbolPropertySet Props, raw_ostream &OS) {
     case SymbolProperty::IBOutletCollection: OS << "IBColl"; break;
     case SymbolProperty::GKInspectable: OS << "GKI"; break;
     case SymbolProperty::Local: OS << "local"; break;
+    case SymbolProperty::ProtocolInterface: OS << "protocol"; break;
     }
   });
 }