[PATCH] D72494: [clangd] Fix targetDecl() on certain usage of ObjC properties.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added reviewers: dgoldman, kadircet.
Herald added subscribers: cfe-commits, usaxena95, jfb, arphaman, jkorous, MaskRay, ilya-biryukov.
Herald added a project: clang.
ilya-biryukov requested changes to this revision.
ilya-biryukov added a comment.
This revision now requires changes to proceed.

Could you also add a test (and possibly support this in the visitors) for `findExplicitReferences`?


In particular there's a common chain:

  OpaqueValueExpr->PseudoObjectExpr->ObjCPropertyRefExpr->ObjCPropertyDecl

and we weren't handling the first two edges


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D72494

Files:
  clang-tools-extra/clangd/FindTarget.cpp
  clang-tools-extra/clangd/unittests/FindTargetTests.cpp


Index: clang-tools-extra/clangd/unittests/FindTargetTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/FindTargetTests.cpp
+++ clang-tools-extra/clangd/unittests/FindTargetTests.cpp
@@ -503,15 +503,16 @@
   EXPECT_DECLS("ObjCPropertyRefExpr", "- (void)setX:(int)x");
 
   Code = R"cpp(
-    @interface Foo {}
-    @property int x;
+    @interface I {}
+    @property(retain) I* x;
+    @property(retain) I* y;
     @end
-    void test(Foo *f) {
-      [[f.x]] = 42;
+    void test(I *f) {
+      [[f.x]].y = 0;
     }
   )cpp";
-  EXPECT_DECLS("ObjCPropertyRefExpr",
-               "@property(atomic, assign, unsafe_unretained, readwrite) int x");
+  EXPECT_DECLS("OpaqueValueExpr",
+               "@property(atomic, retain, readwrite) I *x");
 
   Code = R"cpp(
     @protocol Foo
Index: clang-tools-extra/clangd/FindTarget.cpp
===================================================================
--- clang-tools-extra/clangd/FindTarget.cpp
+++ clang-tools-extra/clangd/FindTarget.cpp
@@ -334,6 +334,12 @@
       void VisitObjCProtocolExpr(const ObjCProtocolExpr *OPE) {
         Outer.add(OPE->getProtocol(), Flags);
       }
+      void VisitOpaqueValueExpr(const OpaqueValueExpr *OVE) {
+        Outer.add(OVE->getSourceExpr(), Flags);
+      }
+      void VisitPseudoObjectExpr(const PseudoObjectExpr *POE) {
+        Outer.add(POE->getSyntacticForm(), Flags);
+      }
     };
     Visitor(*this, Flags).Visit(S);
   }


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