Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang/unittests/Rename/CMakeLists.txt

@@ -0,0 +1,27 @@
+set(LLVM_LINK_COMPONENTS
+  support
+  )
+
+# We'd like clang/unittests/Tooling/RewriterTestContext.h in the test.
+include_directories(${CLANG_SOURCE_DIR})
+
+add_clang_unittest(ClangRenameTests
+  RenameClassTest.cpp
+  RenameEnumTest.cpp
+  RenameAliasTest.cpp
+  RenameMemberTest.cpp
+  RenameFunctionTest.cpp
+  )
+
+target_link_libraries(ClangRenameTests
+  PRIVATE
+  clangAST
+  clangASTMatchers
+  clangBasic
+  clangFormat
+  clangFrontend
+  clangRewrite
+  clangTooling
+  clangToolingCore
+  clangToolingRefactor
+  )

external/llvm-project/clang/unittests/Rename/ClangRenameTest.h

@@ -0,0 +1,112 @@
+//===-- ClangRenameTests.cpp - clang-rename unit tests --------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "unittests/Tooling/RewriterTestContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/FileSystemOptions.h"
+#include "clang/Basic/VirtualFileSystem.h"
+#include "clang/Format/Format.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/PCHContainerOperations.h"
+#include "clang/Tooling/Refactoring.h"
+#include "clang/Tooling/Refactoring/Rename/RenamingAction.h"
+#include "clang/Tooling/Refactoring/Rename/USRFindingAction.h"
+#include "clang/Tooling/Tooling.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "gtest/gtest.h"
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace clang {
+namespace clang_rename {
+namespace test {
+
+struct Case {
+  std::string Before;
+  std::string After;
+  std::string OldName;
+  std::string NewName;
+};
+
+class ClangRenameTest : public testing::Test,
+                        public testing::WithParamInterface<Case> {
+protected:
+  void AppendToHeader(StringRef Code) { HeaderContent += Code.str(); }
+
+  std::string runClangRenameOnCode(llvm::StringRef Code,
+                                   llvm::StringRef OldName,
+                                   llvm::StringRef NewName) {
+    std::string NewCode;
+    llvm::raw_string_ostream(NewCode) << llvm::format(
+        "#include \"%s\"\n%s", HeaderName.c_str(), Code.str().c_str());
+    tooling::FileContentMappings FileContents = {{HeaderName, HeaderContent},
+                                                 {CCName, NewCode}};
+    clang::RewriterTestContext Context;
+    Context.createInMemoryFile(HeaderName, HeaderContent);
+    clang::FileID InputFileID = Context.createInMemoryFile(CCName, NewCode);
+
+    tooling::USRFindingAction FindingAction({}, {OldName}, false);
+    std::unique_ptr<tooling::FrontendActionFactory> USRFindingActionFactory =
+        tooling::newFrontendActionFactory(&FindingAction);
+
+    if (!tooling::runToolOnCodeWithArgs(
+            USRFindingActionFactory->create(), NewCode, {"-std=c++11"}, CCName,
+            "clang-rename", std::make_shared<PCHContainerOperations>(),
+            FileContents))
+      return "";
+
+    const std::vector<std::vector<std::string>> &USRList =
+        FindingAction.getUSRList();
+    std::vector<std::string> NewNames = {NewName};
+    std::map<std::string, tooling::Replacements> FileToReplacements;
+    tooling::QualifiedRenamingAction RenameAction(NewNames, USRList,
+                                                  FileToReplacements);
+    auto RenameActionFactory = tooling::newFrontendActionFactory(&RenameAction);
+    if (!tooling::runToolOnCodeWithArgs(
+            RenameActionFactory->create(), NewCode, {"-std=c++11"}, CCName,
+            "clang-rename", std::make_shared<PCHContainerOperations>(),
+            FileContents))
+      return "";
+
+    formatAndApplyAllReplacements(FileToReplacements, Context.Rewrite, "llvm");
+    return Context.getRewrittenText(InputFileID);
+  }
+
+  void CompareSnippets(StringRef Expected, StringRef Actual) {
+    std::string ExpectedCode;
+    llvm::raw_string_ostream(ExpectedCode) << llvm::format(
+        "#include \"%s\"\n%s", HeaderName.c_str(), Expected.str().c_str());
+    EXPECT_EQ(format(ExpectedCode), format(Actual));
+  }
+
+  std::string format(llvm::StringRef Code) {
+    tooling::Replacements Replaces = format::reformat(
+        format::getLLVMStyle(), Code, {tooling::Range(0, Code.size())});
+    auto ChangedCode = tooling::applyAllReplacements(Code, Replaces);
+    EXPECT_TRUE(static_cast<bool>(ChangedCode));
+    if (!ChangedCode) {
+      llvm::errs() << llvm::toString(ChangedCode.takeError());
+      return "";
+    }
+    return *ChangedCode;
+  }
+
+  std::string HeaderContent;
+  std::string HeaderName = "header.h";
+  std::string CCName = "input.cc";
+};
+
+} // namespace test
+} // namespace clang_rename
+} // namesdpace clang

external/llvm-project/clang/unittests/Rename/RenameAliasTest.cpp

@@ -0,0 +1,304 @@
+//===-- RenameAliasTest.cpp - unit tests for renaming alias ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ClangRenameTest.h"
+
+namespace clang {
+namespace clang_rename {
+namespace test {
+namespace {
+
+class RenameAliasTest : public ClangRenameTest {
+public:
+  RenameAliasTest() {
+    AppendToHeader(R"(
+        #define MACRO(x) x
+        namespace some_ns {
+        class A {
+         public:
+          void foo() {}
+          struct Nested {
+           enum NestedEnum {
+             E1, E2,
+           };
+          };
+        };
+        } // namespace some_ns
+        namespace a {
+        typedef some_ns::A TA;
+        using UA = some_ns::A;
+        } // namespace a
+        namespace b {
+        typedef some_ns::A TA;
+        using UA = some_ns::A;
+        }
+        template <typename T> class ptr {};
+        template <typename T>
+
+        using TPtr = ptr<int>;
+    )");
+  }
+};
+
+INSTANTIATE_TEST_CASE_P(
+    RenameAliasTests, RenameAliasTest,
+    testing::ValuesIn(std::vector<Case>({
+        // basic functions
+        {"void f(a::TA a1) {}", "void f(b::TB a1) {}", "a::TA", "b::TB"},
+        {"void f(a::UA a1) {}", "void f(b::UB a1) {}", "a::UA", "b::UB"},
+        {"void f(a::TA* a1) {}", "void f(b::TB* a1) {}", "a::TA", "b::TB"},
+        {"void f(a::TA** a1) {}", "void f(b::TB** a1) {}", "a::TA", "b::TB"},
+        {"a::TA f() { return a::TA(); }", "b::TB f() { return b::TB(); }",
+         "a::TA", "b::TB"},
+        {"a::TA f() { return a::UA(); }", "b::TB f() { return a::UA(); }",
+         "a::TA", "b::TB"},
+        {"a::TA f() { return a::UA(); }", "a::TA f() { return b::UB(); }",
+         "a::UA", "b::UB"},
+        {"void f() { a::TA a; }", "void f() { b::TB a; }", "a::TA", "b::TB"},
+        {"void f(const a::TA& a1) {}", "void f(const b::TB& a1) {}", "a::TA",
+         "b::TB"},
+        {"void f(const a::UA& a1) {}", "void f(const b::UB& a1) {}", "a::UA",
+         "b::UB"},
+        {"void f(const a::TA* a1) {}", "void f(const b::TB* a1) {}", "a::TA",
+         "b::TB"},
+        {"namespace a { void f(TA a1) {} }",
+         "namespace a { void f(b::TB a1) {} }", "a::TA", "b::TB"},
+        {"void f(MACRO(a::TA) a1) {}", "void f(MACRO(b::TB) a1) {}", "a::TA",
+         "b::TB"},
+        {"void f(MACRO(a::TA a1)) {}", "void f(MACRO(b::TB a1)) {}", "a::TA",
+         "b::TB"},
+
+        // shorten/add namespace.
+        {"namespace b { void f(a::UA a1) {} }",
+         "namespace b {void f(UB a1) {} }", "a::UA", "b::UB"},
+        {"namespace a { void f(UA a1) {} }",
+         "namespace a {void f(b::UB a1) {} }", "a::UA", "b::UB"},
+
+        // use namespace and typedefs
+        {"struct S { using T = a::TA; T a_; };",
+         "struct S { using T = b::TB; T a_; };", "a::TA", "b::TB"},
+        {"using T = a::TA; T gA;", "using T = b::TB; T gA;", "a::TA", "b::TB"},
+        {"using T = a::UA; T gA;", "using T = b::UB; T gA;", "a::UA", "b::UB"},
+        {"typedef a::TA T; T gA;", "typedef b::TB T; T gA;", "a::TA", "b::TB"},
+        {"typedef a::UA T; T gA;", "typedef b::UB T; T gA;", "a::UA", "b::UB"},
+        {"typedef MACRO(a::TA) T; T gA;", "typedef MACRO(b::TB) T; T gA;",
+         "a::TA", "b::TB"},
+
+        // types in using shadows.
+        {"using a::TA; TA gA;", "using b::TB; b::TB gA;", "a::TA", "b::TB"},
+        {"using a::UA; UA gA;", "using b::UB; b::UB gA;", "a::UA", "b::UB"},
+
+        // struct members and other oddities
+        {"struct S : public a::TA {};", "struct S : public b::TB {};", "a::TA",
+         "b::TB"},
+        {"struct S : public a::UA {};", "struct S : public b::UB {};", "a::UA",
+         "b::UB"},
+        {"struct F { void f(a::TA a1) {} };",
+         "struct F { void f(b::TB a1) {} };", "a::TA", "b::TB"},
+        {"struct F { a::TA a_; };", "struct F { b::TB a_; };", "a::TA",
+         "b::TB"},
+        {"struct F { ptr<a::TA> a_; };", "struct F { ptr<b::TB> a_; };",
+         "a::TA", "b::TB"},
+        {"struct F { ptr<a::UA> a_; };", "struct F { ptr<b::UB> a_; };",
+         "a::UA", "b::UB"},
+
+        // types in nested name specifiers
+        {"void f() { a::TA::Nested ne; }", "void f() { b::TB::Nested ne; }",
+         "a::TA", "b::TB"},
+        {"void f() { a::UA::Nested ne; }", "void f() { b::UB::Nested ne; }",
+         "a::UA", "b::UB"},
+        {"void f() { a::TA::Nested::NestedEnum e; }",
+         "void f() { b::TB::Nested::NestedEnum e; }", "a::TA", "b::TB"},
+        {"void f() { auto e = a::TA::Nested::NestedEnum::E1; }",
+         "void f() { auto e = b::TB::Nested::NestedEnum::E1; }", "a::TA",
+         "b::TB"},
+        {"void f() { auto e = a::TA::Nested::E1; }",
+         "void f() { auto e = b::TB::Nested::E1; }", "a::TA", "b::TB"},
+
+        // templates
+        {"template <typename T> struct Foo { T t; }; void f() { Foo<a::TA> "
+         "foo; }",
+         "template <typename T> struct Foo { T t; }; void f() { Foo<b::TB> "
+         "foo; }",
+         "a::TA", "b::TB"},
+        {"template <typename T> struct Foo { a::TA a; };",
+         "template <typename T> struct Foo { b::TB a; };", "a::TA", "b::TB"},
+        {"template <typename T> void f(T t) {} void g() { f<a::TA>(a::TA()); }",
+         "template <typename T> void f(T t) {} void g() { f<b::TB>(b::TB()); }",
+         "a::TA", "b::TB"},
+        {"template <typename T> void f(T t) {} void g() { f<a::UA>(a::UA()); }",
+         "template <typename T> void f(T t) {} void g() { f<b::UB>(b::UB()); }",
+         "a::UA", "b::UB"},
+        {"template <typename T> int f() { return 1; } template <> int "
+         "f<a::TA>() { return 2; } int g() { return f<a::TA>(); }",
+         "template <typename T> int f() { return 1; } template <> int "
+         "f<b::TB>() { return 2; } int g() { return f<b::TB>(); }",
+         "a::TA", "b::TB"},
+        {"struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "auto a = f.template foo<a::TA>(); }",
+         "struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "auto a = f.template foo<b::TB>(); }",
+         "a::TA", "b::TB"},
+        {"struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "auto a = f.template foo<a::UA>(); }",
+         "struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "auto a = f.template foo<b::UB>(); }",
+         "a::UA", "b::UB"},
+
+        // The following two templates are distilled from regressions found in
+        // unique_ptr<> and type_traits.h
+        {"template <typename T> struct outer { typedef T type; type Baz(); }; "
+         "outer<a::TA> g_A;",
+         "template <typename T> struct outer { typedef T type; type Baz(); }; "
+         "outer<b::TB> g_A;",
+         "a::TA", "b::TB"},
+        {"template <typename T> struct nested { typedef T type; }; template "
+         "<typename T> struct outer { typename nested<T>::type Foo(); }; "
+         "outer<a::TA> g_A;",
+         "template <typename T> struct nested { typedef T type; }; template "
+         "<typename T> struct outer { typename nested<T>::type Foo(); }; "
+         "outer<b::TB> g_A;",
+         "a::TA", "b::TB"},
+
+        // macros
+        {"#define FOO(T, t) T t\nvoid f() { FOO(a::TA, a1); FOO(a::TA, a2); }",
+         "#define FOO(T, t) T t\nvoid f() { FOO(b::TB, a1); FOO(b::TB, a2); }",
+         "a::TA", "b::TB"},
+        {"#define FOO(n) a::TA n\nvoid f() { FOO(a1); FOO(a2); }",
+         "#define FOO(n) b::TB n\nvoid f() { FOO(a1); FOO(a2); }", "a::TA",
+         "b::TB"},
+        {"#define FOO(n) a::UA n\nvoid f() { FOO(a1); FOO(a2); }",
+         "#define FOO(n) b::UB n\nvoid f() { FOO(a1); FOO(a2); }", "a::UA",
+         "b::UB"},
+
+        // Pointer to member functions
+        {"auto gA = &a::TA::foo;", "auto gA = &b::TB::foo;", "a::TA", "b::TB"},
+        {"using a::TA; auto gA = &TA::foo;",
+         "using b::TB; auto gA = &b::TB::foo;", "a::TA", "b::TB"},
+        {"typedef a::TA T; auto gA = &T::foo;",
+         "typedef b::TB T; auto gA = &T::foo;", "a::TA", "b::TB"},
+        {"auto gA = &MACRO(a::TA)::foo;", "auto gA = &MACRO(b::TB)::foo;",
+         "a::TA", "b::TB"},
+
+        // templated using alias.
+        {"void f(TPtr<int> p) {}", "void f(NewTPtr<int> p) {}", "TPtr",
+         "NewTPtr"},
+        {"void f(::TPtr<int> p) {}", "void f(::NewTPtr<int> p) {}", "TPtr",
+         "NewTPtr"},
+    })), );
+
+TEST_P(RenameAliasTest, RenameAlias) {
+  auto Param = GetParam();
+  assert(!Param.OldName.empty());
+  assert(!Param.NewName.empty());
+  std::string Actual =
+      runClangRenameOnCode(Param.Before, Param.OldName, Param.NewName);
+  CompareSnippets(Param.After, Actual);
+}
+
+TEST_F(RenameAliasTest, RenameTypedefDefinitions) {
+  std::string Before = R"(
+    class X {};
+    typedef X TOld;
+    )";
+  std::string Expected = R"(
+    class X {};
+    typedef X TNew;
+    )";
+  std::string After = runClangRenameOnCode(Before, "TOld", "TNew");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameAliasTest, RenameUsingAliasDefinitions) {
+  std::string Before = R"(
+    class X {};
+    using UOld = X;
+    )";
+  std::string Expected = R"(
+    class X {};
+    using UNew = X;
+    )";
+  std::string After = runClangRenameOnCode(Before, "UOld", "UNew");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameAliasTest, RenameTemplatedAliasDefinitions) {
+  std::string Before = R"(
+    template <typename T>
+    class X { T t; };
+
+    template <typename T>
+    using Old = X<T>;
+    )";
+  std::string Expected = R"(
+    template <typename T>
+    class X { T t; };
+
+    template <typename T>
+    using New = X<T>;
+    )";
+  std::string After = runClangRenameOnCode(Before, "Old", "New");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameAliasTest, RenameAliasesInNamespaces) {
+  std::string Before = R"(
+    namespace x { class X {}; }
+    namespace ns {
+    using UOld = x::X;
+    }
+    )";
+  std::string Expected = R"(
+    namespace x { class X {}; }
+    namespace ns {
+    using UNew = x::X;
+    }
+    )";
+  std::string After = runClangRenameOnCode(Before, "ns::UOld", "ns::UNew");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameAliasTest, AliasesInMacros) {
+  std::string Before = R"(
+    namespace x { class Old {}; }
+    namespace ns {
+    #define REF(alias) alias alias_var;
+
+    #define ALIAS(old) \
+      using old##Alias = x::old; \
+      REF(old##Alias);
+
+    ALIAS(Old);
+
+    OldAlias old_alias;
+    }
+    )";
+  std::string Expected = R"(
+    namespace x { class Old {}; }
+    namespace ns {
+    #define REF(alias) alias alias_var;
+
+    #define ALIAS(old) \
+      using old##Alias = x::old; \
+      REF(old##Alias);
+
+    ALIAS(Old);
+
+    NewAlias old_alias;
+    }
+    )";
+  std::string After =
+      runClangRenameOnCode(Before, "ns::OldAlias", "ns::NewAlias");
+  CompareSnippets(Expected, After);
+}
+
+} // anonymous namespace
+} // namespace test
+} // namespace clang_rename
+} // namesdpace clang

external/llvm-project/clang/unittests/Rename/RenameEnumTest.cpp

@@ -0,0 +1,189 @@
+#include "ClangRenameTest.h"
+
+namespace clang {
+namespace clang_rename {
+namespace test {
+namespace {
+
+class RenameEnumTest : public ClangRenameTest {
+public:
+  RenameEnumTest() {
+    AppendToHeader(R"(
+        #define MACRO(x) x
+        namespace a {
+        enum A1 { Red };
+        enum class A2 { Blue };
+        struct C {
+         enum NestedEnum { White };
+         enum class NestedScopedEnum { Black };
+        };
+        namespace d {
+        enum A3 { Orange };
+        } // namespace d
+        enum A4 { Pink };
+        } // namespace a
+        enum A5 { Green };)");
+  }
+};
+
+INSTANTIATE_TEST_CASE_P(
+    RenameEnumTests, RenameEnumTest,
+    testing::ValuesIn(std::vector<Case>({
+        {"void f(a::A2 arg) { a::A2 t = a::A2::Blue; }",
+         "void f(b::B2 arg) { b::B2 t = b::B2::Blue; }", "a::A2", "b::B2"},
+        {"void f() { a::A1* t1; }", "void f() { b::B1* t1; }", "a::A1",
+         "b::B1"},
+        {"void f() { a::A2* t1; }", "void f() { b::B2* t1; }", "a::A2",
+         "b::B2"},
+        {"void f() { enum a::A2 t = a::A2::Blue; }",
+         "void f() { enum b::B2 t = b::B2::Blue; }", "a::A2", "b::B2"},
+        {"void f() { enum a::A2 t = a::A2::Blue; }",
+         "void f() { enum b::B2 t = b::B2::Blue; }", "a::A2", "b::B2"},
+
+        {"void f() { a::A1 t = a::Red; }", "void f() { b::B1 t = b::B1::Red; }",
+         "a::A1", "b::B1"},
+        {"void f() { a::A1 t = a::A1::Red; }",
+         "void f() { b::B1 t = b::B1::Red; }", "a::A1", "b::B1"},
+        {"void f() { auto t = a::Red; }", "void f() { auto t = b::B1::Red; }",
+         "a::A1", "b::B1"},
+        {"namespace b { void f() { a::A1 t = a::Red; } }",
+         "namespace b { void f() { B1 t = B1::Red; } }", "a::A1", "b::B1"},
+        {"void f() { a::d::A3 t = a::d::Orange; }",
+         "void f() { a::b::B3 t = a::b::B3::Orange; }", "a::d::A3", "a::b::B3"},
+        {"namespace a { void f() { a::d::A3 t = a::d::Orange; } }",
+         "namespace a { void f() { b::B3 t = b::B3::Orange; } }", "a::d::A3",
+         "a::b::B3"},
+        {"void f() { A5 t = Green; }", "void f() { B5 t = Green; }", "A5",
+         "B5"},
+        // FIXME: the new namespace qualifier should be added to the unscoped
+        // enum constant.
+        {"namespace a { void f() { auto t = Green; } }",
+         "namespace a { void f() { auto t = Green; } }", "a::A1", "b::B1"},
+
+        // namespace qualifiers
+        {"namespace a { void f(A1 a1) {} }",
+         "namespace a { void f(b::B1 a1) {} }", "a::A1", "b::B1"},
+        {"namespace a { void f(A2 a2) {} }",
+         "namespace a { void f(b::B2 a2) {} }", "a::A2", "b::B2"},
+        {"namespace b { void f(a::A1 a1) {} }",
+         "namespace b { void f(B1 a1) {} }", "a::A1", "b::B1"},
+        {"namespace b { void f(a::A2 a2) {} }",
+         "namespace b { void f(B2 a2) {} }", "a::A2", "b::B2"},
+
+        // nested enums
+        {"void f() { a::C::NestedEnum t = a::C::White; }",
+         "void f() { a::C::NewNestedEnum t = a::C::NewNestedEnum::White; }",
+         "a::C::NestedEnum", "a::C::NewNestedEnum"},
+        {"void f() { a::C::NestedScopedEnum t = a::C::NestedScopedEnum::Black; "
+         "}",
+         "void f() { a::C::NewNestedScopedEnum t = "
+         "a::C::NewNestedScopedEnum::Black; }",
+         "a::C::NestedScopedEnum", "a::C::NewNestedScopedEnum"},
+
+        // macros
+        {"void f(MACRO(a::A1) a1) {}", "void f(MACRO(b::B1) a1) {}", "a::A1",
+         "b::B1"},
+        {"void f(MACRO(a::A2) a2) {}", "void f(MACRO(b::B2) a2) {}", "a::A2",
+         "b::B2"},
+        {"#define FOO(T, t) T t\nvoid f() { FOO(a::A1, a1); }",
+         "#define FOO(T, t) T t\nvoid f() { FOO(b::B1, a1); }", "a::A1",
+         "b::B1"},
+        {"#define FOO(T, t) T t\nvoid f() { FOO(a::A2, a2); }",
+         "#define FOO(T, t) T t\nvoid f() { FOO(b::B2, a2); }", "a::A2",
+         "b::B2"},
+        {"#define FOO(n) a::A1 n\nvoid f() { FOO(a1); FOO(a2); }",
+         "#define FOO(n) b::B1 n\nvoid f() { FOO(a1); FOO(a2); }", "a::A1",
+         "b::B1"},
+
+        // using and type alias
+        {"using a::A1; A1 gA;", "using b::B1; b::B1 gA;", "a::A1", "b::B1"},
+        {"using a::A2; A2 gA;", "using b::B2; b::B2 gA;", "a::A2", "b::B2"},
+        {"struct S { using T = a::A1; T a_; };",
+         "struct S { using T = b::B1; T a_; };", "a::A1", "b::B1"},
+        {"using T = a::A1; T gA;", "using T = b::B1; T gA;", "a::A1", "b::B1"},
+        {"using T = a::A2; T gA;", "using T = b::B2; T gA;", "a::A2", "b::B2"},
+        {"typedef a::A1 T; T gA;", "typedef b::B1 T; T gA;", "a::A1", "b::B1"},
+        {"typedef a::A2 T; T gA;", "typedef b::B2 T; T gA;", "a::A2", "b::B2"},
+        {"typedef MACRO(a::A1) T; T gA;", "typedef MACRO(b::B1) T; T gA;",
+         "a::A1", "b::B1"},
+
+        // templates
+        {"template<typename T> struct Foo { T t; }; void f() { Foo<a::A1> "
+         "foo1; }",
+         "template<typename T> struct Foo { T t; }; void f() { Foo<b::B1> "
+         "foo1; }",
+         "a::A1", "b::B1"},
+        {"template<typename T> struct Foo { T t; }; void f() { Foo<a::A2> "
+         "foo2; }",
+         "template<typename T> struct Foo { T t; }; void f() { Foo<b::B2> "
+         "foo2; }",
+         "a::A2", "b::B2"},
+        {"template<typename T> struct Foo { a::A1 a1; };",
+         "template<typename T> struct Foo { b::B1 a1; };", "a::A1", "b::B1"},
+        {"template<typename T> struct Foo { a::A2 a2; };",
+         "template<typename T> struct Foo { b::B2 a2; };", "a::A2", "b::B2"},
+        {"template<typename T> int f() { return 1; } template<> int f<a::A1>() "
+         "{ return 2; } int g() { return f<a::A1>(); }",
+         "template<typename T> int f() { return 1; } template<> int f<b::B1>() "
+         "{ return 2; } int g() { return f<b::B1>(); }",
+         "a::A1", "b::B1"},
+        {"template<typename T> int f() { return 1; } template<> int f<a::A2>() "
+         "{ return 2; } int g() { return f<a::A2>(); }",
+         "template<typename T> int f() { return 1; } template<> int f<b::B2>() "
+         "{ return 2; } int g() { return f<b::B2>(); }",
+         "a::A2", "b::B2"},
+        {"struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "f.foo<a::A1>(); }",
+         "struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "f.foo<b::B1>(); }",
+         "a::A1", "b::B1"},
+        {"struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "f.foo<a::A2>(); }",
+         "struct Foo { template <typename T> T foo(); }; void g() { Foo f;  "
+         "f.foo<b::B2>(); }",
+         "a::A2", "b::B2"},
+    })), );
+
+TEST_P(RenameEnumTest, RenameEnums) {
+  auto Param = GetParam();
+  assert(!Param.OldName.empty());
+  assert(!Param.NewName.empty());
+  std::string Actual =
+      runClangRenameOnCode(Param.Before, Param.OldName, Param.NewName);
+  CompareSnippets(Param.After, Actual);
+}
+
+TEST_F(RenameEnumTest, RenameEnumDecl) {
+  std::string Before = R"(
+      namespace ns {
+      enum Old1 { Blue };
+      }
+  )";
+  std::string Expected = R"(
+      namespace ns {
+      enum New1 { Blue };
+      }
+  )";
+  std::string After = runClangRenameOnCode(Before, "ns::Old1", "ns::New1");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameEnumTest, RenameScopedEnumDecl) {
+  std::string Before = R"(
+      namespace ns {
+      enum class Old1 { Blue };
+      }
+  )";
+  std::string Expected = R"(
+      namespace ns {
+      enum class New1 { Blue };
+      }
+  )";
+  std::string After = runClangRenameOnCode(Before, "ns::Old1", "ns::New1");
+  CompareSnippets(Expected, After);
+}
+
+} // anonymous namespace
+} // namespace test
+} // namespace clang_rename
+} // namesdpace clang

external/llvm-project/clang/unittests/Rename/RenameMemberTest.cpp

@@ -0,0 +1,229 @@
+//===-- ClangMemberTests.cpp - unit tests for renaming class members ------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ClangRenameTest.h"
+
+namespace clang {
+namespace clang_rename {
+namespace test {
+namespace {
+
+class RenameMemberTest : public ClangRenameTest {
+public:
+  RenameMemberTest() {
+    AppendToHeader(R"(
+        struct NA {
+          void Foo();
+          void NotFoo();
+          static void SFoo();
+          static void SNotFoo();
+          int Moo;
+        };
+        struct A {
+          virtual void Foo();
+          void NotFoo();
+          static void SFoo();
+          static void SNotFoo();
+          int Moo;
+          int NotMoo;
+          static int SMoo;
+        };
+        struct B : public A {
+          void Foo() override;
+        };
+        template <typename T> struct TA {
+          T* Foo();
+          T* NotFoo();
+          static T* SFoo();
+          static T* NotSFoo();
+        };
+        template <typename T> struct TB : public TA<T> {};
+        namespace ns {
+          template <typename T> struct TA {
+            T* Foo();
+            T* NotFoo();
+            static T* SFoo();
+            static T* NotSFoo();
+            static int SMoo;
+          };
+          template <typename T> struct TB : public TA<T> {};
+          struct A {
+            void Foo();
+            void NotFoo();
+            static void SFoo();
+            static void SNotFoo();
+          };
+          struct B : public A {};
+          struct C {
+            template <class T>
+            void SFoo(const T& t) {}
+            template <class T>
+            void Foo() {}
+          };
+        })");
+  }
+};
+
+INSTANTIATE_TEST_CASE_P(
+    DISABLED_RenameTemplatedClassStaticVariableTest, RenameMemberTest,
+    testing::ValuesIn(std::vector<Case>({
+        // FIXME: support renaming static variables for template classes.
+        {"void f() { ns::TA<int>::SMoo; }",
+         "void f() { ns::TA<int>::SMeh; }", "ns::TA::SMoo", "ns::TA::SMeh"},
+    })), );
+
+INSTANTIATE_TEST_CASE_P(
+    RenameMemberTest, RenameMemberTest,
+    testing::ValuesIn(std::vector<Case>({
+        // Normal methods and fields.
+        {"void f() { A a; a.Foo(); }", "void f() { A a; a.Bar(); }", "A::Foo",
+         "A::Bar"},
+        {"void f() { ns::A a; a.Foo(); }", "void f() { ns::A a; a.Bar(); }",
+         "ns::A::Foo", "ns::A::Bar"},
+        {"void f() { A a; int x = a.Moo; }", "void f() { A a; int x = a.Meh; }",
+         "A::Moo", "A::Meh"},
+        {"void f() { B b; b.Foo(); }", "void f() { B b; b.Bar(); }", "B::Foo",
+         "B::Bar"},
+        {"void f() { ns::B b; b.Foo(); }", "void f() { ns::B b; b.Bar(); }",
+         "ns::A::Foo", "ns::A::Bar"},
+        {"void f() { B b; int x = b.Moo; }", "void f() { B b; int x = b.Meh; }",
+         "A::Moo", "A::Meh"},
+
+        // Static methods.
+        {"void f() { A::SFoo(); }", "void f() { A::SBar(); }", "A::SFoo",
+         "A::SBar"},
+        {"void f() { ns::A::SFoo(); }", "void f() { ns::A::SBar(); }",
+         "ns::A::SFoo", "ns::A::SBar"},
+        {"void f() { TA<int>::SFoo(); }", "void f() { TA<int>::SBar(); }",
+         "TA::SFoo", "TA::SBar"},
+        {"void f() { ns::TA<int>::SFoo(); }",
+         "void f() { ns::TA<int>::SBar(); }", "ns::TA::SFoo", "ns::TA::SBar"},
+
+        // Static variables.
+        {"void f() { A::SMoo; }",
+         "void f() { A::SMeh; }", "A::SMoo", "A::SMeh"},
+
+        // Templated methods.
+        {"void f() { TA<int> a; a.Foo(); }", "void f() { TA<int> a; a.Bar(); }",
+         "TA::Foo", "TA::Bar"},
+        {"void f() { ns::TA<int> a; a.Foo(); }",
+         "void f() { ns::TA<int> a; a.Bar(); }", "ns::TA::Foo", "ns::TA::Bar"},
+        {"void f() { TB<int> b; b.Foo(); }", "void f() { TB<int> b; b.Bar(); }",
+         "TA::Foo", "TA::Bar"},
+        {"void f() { ns::TB<int> b; b.Foo(); }",
+         "void f() { ns::TB<int> b; b.Bar(); }", "ns::TA::Foo", "ns::TA::Bar"},
+        {"void f() { ns::C c; int x; c.SFoo(x); }",
+         "void f() { ns::C c; int x; c.SBar(x); }", "ns::C::SFoo",
+         "ns::C::SBar"},
+        {"void f() { ns::C c; c.Foo<int>(); }",
+         "void f() { ns::C c; c.Bar<int>(); }", "ns::C::Foo", "ns::C::Bar"},
+
+        // Pointers to methods.
+        {"void f() { auto p = &A::Foo; }", "void f() { auto p = &A::Bar; }",
+         "A::Foo", "A::Bar"},
+        {"void f() { auto p = &A::SFoo; }", "void f() { auto p = &A::SBar; }",
+         "A::SFoo", "A::SBar"},
+        {"void f() { auto p = &B::Foo; }", "void f() { auto p = &B::Bar; }",
+         "B::Foo", "B::Bar"},
+        {"void f() { auto p = &ns::A::Foo; }",
+         "void f() { auto p = &ns::A::Bar; }", "ns::A::Foo", "ns::A::Bar"},
+        {"void f() { auto p = &ns::A::SFoo; }",
+         "void f() { auto p = &ns::A::SBar; }", "ns::A::SFoo", "ns::A::SBar"},
+        {"void f() { auto p = &ns::C::SFoo<int>; }",
+         "void f() { auto p = &ns::C::SBar<int>; }", "ns::C::SFoo",
+         "ns::C::SBar"},
+
+        // These methods are not declared or overrided in the subclass B, we
+        // have to use the qualified name with parent class A to identify them.
+        {"void f() { auto p = &ns::B::Foo; }",
+         "void f() { auto p = &ns::B::Bar; }", "ns::A::Foo", "ns::B::Bar"},
+        {"void f() { B::SFoo(); }", "void f() { B::SBar(); }", "A::SFoo",
+         "B::SBar"},
+        {"void f() { ns::B::SFoo(); }", "void f() { ns::B::SBar(); }",
+         "ns::A::SFoo", "ns::B::SBar"},
+        {"void f() { auto p = &B::SFoo; }", "void f() { auto p = &B::SBar; }",
+         "A::SFoo", "B::SBar"},
+        {"void f() { auto p = &ns::B::SFoo; }",
+         "void f() { auto p = &ns::B::SBar; }", "ns::A::SFoo", "ns::B::SBar"},
+        {"void f() { TB<int>::SFoo(); }", "void f() { TB<int>::SBar(); }",
+         "TA::SFoo", "TB::SBar"},
+        {"void f() { ns::TB<int>::SFoo(); }",
+         "void f() { ns::TB<int>::SBar(); }", "ns::TA::SFoo", "ns::TB::SBar"},
+    })), );
+
+TEST_P(RenameMemberTest, RenameMembers) {
+  auto Param = GetParam();
+  assert(!Param.OldName.empty());
+  assert(!Param.NewName.empty());
+  std::string Actual =
+      runClangRenameOnCode(Param.Before, Param.OldName, Param.NewName);
+  CompareSnippets(Param.After, Actual);
+}
+
+TEST_F(RenameMemberTest, RenameMemberInsideClassMethods) {
+  std::string Before = R"(
+      struct X {
+        int Moo;
+        void Baz() { Moo = 1; }
+      };)";
+  std::string Expected = R"(
+      struct X {
+        int Meh;
+        void Baz() { Meh = 1; }
+      };)";
+  std::string After = runClangRenameOnCode(Before, "X::Moo", "Y::Meh");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameMemberTest, RenameMethodInsideClassMethods) {
+  std::string Before = R"(
+      struct X {
+        void Foo() {}
+        void Baz() { Foo(); }
+      };)";
+  std::string Expected = R"(
+      struct X {
+        void Bar() {}
+        void Baz() { Bar(); }
+      };)";
+  std::string After = runClangRenameOnCode(Before, "X::Foo", "X::Bar");
+  CompareSnippets(Expected, After);
+}
+
+TEST_F(RenameMemberTest, RenameCtorInitializer) {
+  std::string Before = R"(
+      class X {
+      public:
+       X();
+       A a;
+       A a2;
+       B b;
+      };
+
+      X::X():a(), b() {}
+      )";
+  std::string Expected = R"(
+      class X {
+      public:
+       X();
+       A bar;
+       A a2;
+       B b;
+      };
+
+      X::X():bar(), b() {}
+      )";
+  std::string After = runClangRenameOnCode(Before, "X::a", "X::bar");
+  CompareSnippets(Expected, After);
+}
+
+} // anonymous namespace
+} // namespace test
+} // namespace clang_rename
+} // namesdpace clang