From: Haojian Wu <hokein.wu@gmail.com>
Date: Wed, 5 Feb 2020 11:31:11 +0000 (+0100)
Subject: [clangd] don't rename on protobuf symbols.
X-Git-Tag: llvmorg-12-init~15562
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d6da8a1d945361327b8da79195dbfccc2e533e87;p=platform%2Fupstream%2Fllvm.git

[clangd] don't rename on protobuf symbols.

Reviewers: kadircet

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74036
---

diff --git a/clang-tools-extra/clangd/refactor/Rename.cpp b/clang-tools-extra/clangd/refactor/Rename.cpp
index 31fabc7..44ebdbc 100644
--- a/clang-tools-extra/clangd/refactor/Rename.cpp
+++ b/clang-tools-extra/clangd/refactor/Rename.cpp
@@ -96,7 +96,13 @@ llvm::DenseSet<const NamedDecl *> locateDeclAt(ParsedAST &AST,
   return Result;
 }
 
+// By default, we blacklist C++ standard symbols and protobuf symbols as rename
+// these symbols would change system/generated files which are unlikely to be
+// modified.
 bool isBlacklisted(const NamedDecl &RenameDecl) {
+  if (isProtoFile(RenameDecl.getLocation(),
+                  RenameDecl.getASTContext().getSourceManager()))
+    return true;
   static const auto *StdSymbols = new llvm::DenseSet<llvm::StringRef>({
 #define SYMBOL(Name, NameSpace, Header) {#NameSpace #Name},
 #include "StdSymbolMap.inc"
diff --git a/clang-tools-extra/clangd/unittests/RenameTests.cpp b/clang-tools-extra/clangd/unittests/RenameTests.cpp
index 2aaf45e..a944686 100644
--- a/clang-tools-extra/clangd/unittests/RenameTests.cpp
+++ b/clang-tools-extra/clangd/unittests/RenameTests.cpp
@@ -630,6 +630,21 @@ TEST(RenameTest, MainFileReferencesOnly) {
             expectedResult(Code, NewName));
 }
 
+TEST(RenameTest, ProtobufSymbolIsBlacklisted) {
+  Annotations Code("Prot^obuf buf;");
+  auto TU = TestTU::withCode(Code.code());
+  TU.HeaderCode =
+      R"cpp(// Generated by the protocol buffer compiler.  DO NOT EDIT!
+      class Protobuf {};
+      )cpp";
+  TU.HeaderFilename = "protobuf.pb.h";
+  auto AST = TU.build();
+  auto Results = rename({Code.point(), "newName", AST, testPath(TU.Filename)});
+  EXPECT_FALSE(Results);
+  EXPECT_THAT(llvm::toString(Results.takeError()),
+              testing::HasSubstr("not a supported kind"));
+}
+
 TEST(CrossFileRenameTests, DirtyBuffer) {
   Annotations FooCode("class [[Foo]] {};");
   std::string FooPath = testPath("foo.cc");