[index] Report references of ObjC super class/protocols in interfaces and protocols.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262584 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Index/IndexDecl.cpp

@@ -14,6 +14,12 @@
 using namespace clang;
 using namespace index;
 
+#define TRY_TO(CALL_EXPR)                                                      \
+  do {                                                                         \
+    if (!CALL_EXPR)                                                            \
+      return false;                                                            \
+  } while (0)
+
 namespace {
 
 class IndexingDeclVisitor : public ConstDeclVisitor<IndexingDeclVisitor, bool> {
@@ -196,11 +202,30 @@ public:
     return true;
   }
 
+  bool handleReferencedProtocols(const ObjCProtocolList &ProtList,
+                                 const ObjCContainerDecl *ContD) {
+    ObjCInterfaceDecl::protocol_loc_iterator LI = ProtList.loc_begin();
+    for (ObjCInterfaceDecl::protocol_iterator
+         I = ProtList.begin(), E = ProtList.end(); I != E; ++I, ++LI) {
+      SourceLocation Loc = *LI;
+      ObjCProtocolDecl *PD = *I;
+      TRY_TO(IndexCtx.handleReference(PD, Loc, ContD, ContD,
+          SymbolRoleSet(),
+          SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, ContD}));
+    }
+    return true;
+  }
+
   bool VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
     if (D->isThisDeclarationADefinition()) {
-      if (!IndexCtx.handleDecl(D))
-        return false;
-      IndexCtx.indexDeclContext(D);
+      TRY_TO(IndexCtx.handleDecl(D));
+      if (auto *SuperD = D->getSuperClass()) {
+        TRY_TO(IndexCtx.handleReference(SuperD, D->getSuperClassLoc(), D, D,
+            SymbolRoleSet(),
+            SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, D}));
+      }
+      TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D));
+      TRY_TO(IndexCtx.indexDeclContext(D));
     } else {
       return IndexCtx.handleReference(D, D->getLocation(), nullptr, nullptr,
                                       SymbolRoleSet());
@@ -210,9 +235,9 @@ public:
 
   bool VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
     if (D->isThisDeclarationADefinition()) {
-      if (!IndexCtx.handleDecl(D))
-        return false;
-      IndexCtx.indexDeclContext(D);
+      TRY_TO(IndexCtx.handleDecl(D));
+      TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D));
+      TRY_TO(IndexCtx.indexDeclContext(D));
     } else {
       return IndexCtx.handleReference(D, D->getLocation(), nullptr, nullptr,
                                       SymbolRoleSet());

test/Index/Core/index-source.m

@@ -18,3 +18,23 @@ void goo(Base *b) {
   // CHECK-NEXT: RelRec | Base | c:objc(cs)Base
   [b meth];
 }
+
+// CHECK: [[@LINE+1]]:11 | objc-protocol/ObjC | Prot1 | c:objc(pl)Prot1 | <no-cgname> | Decl | rel: 0
+@protocol Prot1
+@end
+
+// CHECK: [[@LINE+3]]:11 | objc-protocol/ObjC | Prot2 | c:objc(pl)Prot2 | <no-cgname> | Decl | rel: 0
+// CHECK: [[@LINE+2]]:17 | objc-protocol/ObjC | Prot1 | c:objc(pl)Prot1 | <no-cgname> | Ref,RelBase | rel: 1
+// CHECK-NEXT: RelBase | Prot2 | c:objc(pl)Prot2
+@protocol Prot2<Prot1>
+@end
+
+// CHECK: [[@LINE+7]]:12 | objc-class/ObjC | Sub | c:objc(cs)Sub | _OBJC_CLASS_$_Sub | Decl | rel: 0
+// CHECK: [[@LINE+6]]:18 | objc-class/ObjC | Base | c:objc(cs)Base | _OBJC_CLASS_$_Base | Ref,RelBase | rel: 1
+// CHECK-NEXT: RelBase | Sub | c:objc(cs)Sub
+// CHECK: [[@LINE+4]]:23 | objc-protocol/ObjC | Prot2 | c:objc(pl)Prot2 | <no-cgname> | Ref,RelBase | rel: 1
+// CHECK-NEXT: RelBase | Sub | c:objc(cs)Sub
+// CHECK: [[@LINE+2]]:30 | objc-protocol/ObjC | Prot1 | c:objc(pl)Prot1 | <no-cgname> | Ref,RelBase | rel: 1
+// CHECK-NEXT: RelBase | Sub | c:objc(cs)Sub
+@interface Sub : Base<Prot2, Prot1>
+@end