[clang-tools-extra] r283985 - Revert "[ClangTidy] Add UsingInserter and NamespaceAliaser"

Haojian Wu via cfe-commits cfe-commits at lists.llvm.org
Wed Oct 12 01:19:44 PDT 2016


Author: hokein
Date: Wed Oct 12 03:19:44 2016
New Revision: 283985

URL: http://llvm.org/viewvc/llvm-project?rev=283985&view=rev
Log:
Revert "[ClangTidy] Add UsingInserter and NamespaceAliaser"

This reverts commit r283981. This patch breaks the buildbot.

Removed:
    clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.cpp
    clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.h
    clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.cpp
    clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.h
    clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.cpp
    clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.h
    clang-tools-extra/trunk/unittests/clang-tidy/NamespaceAliaserTest.cpp
    clang-tools-extra/trunk/unittests/clang-tidy/UsingInserterTest.cpp

Removed: clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.cpp?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.cpp (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.cpp (removed)
@@ -1,28 +0,0 @@
-//===---------- ASTUtils.cpp - clang-tidy ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "ASTUtils.h"
-
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/ASTMatchers/ASTMatchers.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-using namespace ast_matchers;
-
-const FunctionDecl *getSurroundingFunction(ASTContext &Context,
-                                           const Stmt &Statement) {
-  return selectFirst<const FunctionDecl>(
-      "function", match(stmt(hasAncestor(functionDecl().bind("function"))),
-                        Statement, Context));
-}
-} // namespace utils
-} // namespace tidy
-} // namespace clang

Removed: clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.h?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.h (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/ASTUtils.h (removed)
@@ -1,25 +0,0 @@
-//===---------- ASTUtils.h - clang-tidy ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ASTUTILS_H
-#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ASTUTILS_H
-
-#include "clang/AST/AST.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-// Returns the (closest) Function declaration surrounding |Statement| or NULL.
-const FunctionDecl *getSurroundingFunction(ASTContext &Context,
-                                           const Stmt &Statement);
-} // namespace utils
-} // namespace tidy
-} // namespace clang
-
-#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ASTUTILS_H

Removed: clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.cpp?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.cpp (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.cpp (removed)
@@ -1,99 +0,0 @@
-//===---------- NamespaceAliaser.cpp - clang-tidy -------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "NamespaceAliaser.h"
-
-#include "ASTUtils.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/ASTMatchers/ASTMatchers.h"
-#include "clang/Lex/Lexer.h"
-namespace clang {
-namespace tidy {
-namespace utils {
-
-using namespace ast_matchers;
-
-NamespaceAliaser::NamespaceAliaser(const SourceManager &SourceMgr)
-    : SourceMgr(SourceMgr) {}
-
-AST_MATCHER_P(NamespaceAliasDecl, hasTargetNamespace,
-              ast_matchers::internal::Matcher<NamespaceDecl>, innerMatcher) {
-  return innerMatcher.matches(*Node.getNamespace(), Finder, Builder);
-}
-
-Optional<FixItHint>
-NamespaceAliaser::createAlias(ASTContext &Context, const Stmt &Statement,
-                              StringRef Namespace,
-                              const std::vector<std::string> &Abbreviations) {
-  const FunctionDecl *Function = getSurroundingFunction(Context, Statement);
-  if (!Function || !Function->hasBody())
-    return None;
-
-
-  if (AddedAliases[Function].count(Namespace.str()) != 0)
-    return None;
-
-
-  // FIXME: Doesn't consider the order of declarations.
-  // If we accidentially pick an alias defined later in the function,
-  // the output won't compile.
-  // FIXME: Also doesn't consider file or class-scope aliases.
-
-  const auto *ExistingAlias = selectFirst<NamedDecl>(
-      "alias",
-      match(functionDecl(hasBody(compoundStmt(has(declStmt(
-                has(namespaceAliasDecl(hasTargetNamespace(hasName(Namespace)))
-                        .bind("alias"))))))),
-            *Function, Context));
-
-  if (ExistingAlias != nullptr) {
-    AddedAliases[Function][Namespace.str()] = ExistingAlias->getName().str();
-    return None;
-  }
-
-  for (const auto &Abbreviation : Abbreviations) {
-    DeclarationMatcher ConflictMatcher = namedDecl(hasName(Abbreviation));
-    const auto HasConflictingChildren =
-        !match(findAll(ConflictMatcher), *Function, Context).empty();
-    const auto HasConflictingAncestors =
-        !match(functionDecl(hasAncestor(decl(has(ConflictMatcher)))), *Function,
-               Context)
-             .empty();
-    if (HasConflictingAncestors || HasConflictingChildren)
-      continue;
-
-    std::string Declaration =
-        (llvm::Twine("\nnamespace ") + Abbreviation + " = " + Namespace + ";")
-            .str();
-    SourceLocation Loc =
-        Lexer::getLocForEndOfToken(Function->getBody()->getLocStart(), 0,
-                                   SourceMgr, Context.getLangOpts());
-    AddedAliases[Function][Namespace.str()] = Abbreviation;
-    return FixItHint::CreateInsertion(Loc, Declaration);
-  }
-
-  return None;
-}
-
-std::string NamespaceAliaser::getNamespaceName(ASTContext &Context,
-                                               const Stmt &Statement,
-                                               StringRef Namespace) const {
-  const auto *Function = getSurroundingFunction(Context, Statement);
-  auto FunctionAliases = AddedAliases.find(Function);
-  if (FunctionAliases != AddedAliases.end()) {
-    if (FunctionAliases->second.count(Namespace) != 0) {
-      return FunctionAliases->second.find(Namespace)->getValue();
-    }
-  }
-  return Namespace.str();
-}
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang

Removed: clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.h?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.h (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/NamespaceAliaser.h (removed)
@@ -1,52 +0,0 @@
-//===---------- NamespaceAliaser.h - clang-tidy ---------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H
-#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H
-
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/Stmt.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/SourceManager.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/StringMap.h"
-#include <map>
-
-namespace clang {
-namespace tidy {
-namespace utils {
-
-// This class creates function-level namespace aliases.
-class NamespaceAliaser {
-public:
-  explicit NamespaceAliaser(const SourceManager &SourceMgr);
-  // Adds a namespace alias for \p Namespace valid near \p
-  // Statement. Picks the first available name from \p Abbreviations.
-  // Returns ``llvm::None`` if an alias already exists or there is an error.
-  llvm::Optional<FixItHint>
-  createAlias(ASTContext &Context, const Stmt &Statement,
-              llvm::StringRef Namespace,
-              const std::vector<std::string> &Abbreviations);
-
-  // Get an alias name for \p Namespace valid at \p Statement. Returns \p
-  // Namespace if there is no alias.
-  std::string getNamespaceName(ASTContext &Context, const Stmt &Statement,
-                               llvm::StringRef Namespace) const;
-
-private:
-  const SourceManager &SourceMgr;
-  llvm::DenseMap<const FunctionDecl *, llvm::StringMap<std::string>>
-      AddedAliases;
-};
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang
-
-#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H

Removed: clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.cpp?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.cpp (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.cpp (removed)
@@ -1,88 +0,0 @@
-//===---------- UsingInserter.cpp - clang-tidy ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "UsingInserter.h"
-
-#include "ASTUtils.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/ASTMatchers/ASTMatchers.h"
-#include "clang/Lex/Lexer.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-
-using namespace ast_matchers;
-
-static StringRef getUnqualifiedName(StringRef QualifiedName) {
-  size_t LastSeparatorPos = QualifiedName.rfind("::");
-  if (LastSeparatorPos == StringRef::npos)
-    return QualifiedName;
-  return QualifiedName.drop_front(LastSeparatorPos + 2);
-}
-
-UsingInserter::UsingInserter(const SourceManager &SourceMgr)
-    : SourceMgr(SourceMgr) {}
-
-Optional<FixItHint> UsingInserter::createUsingDeclaration(
-    ASTContext &Context, const Stmt &Statement, StringRef QualifiedName) {
-  StringRef UnqualifiedName = getUnqualifiedName(QualifiedName);
-  const FunctionDecl *Function = getSurroundingFunction(Context, Statement);
-  if (!Function)
-    return None;
-
-  if (AddedUsing.count(std::make_pair(Function, QualifiedName.str())) != 0)
-    return None;
-
-  SourceLocation InsertLoc = Lexer::getLocForEndOfToken(
-      Function->getBody()->getLocStart(), 0, SourceMgr, Context.getLangOpts());
-
-  // Only use using declarations in the main file, not in includes.
-  if (SourceMgr.getFileID(InsertLoc) != SourceMgr.getMainFileID())
-    return None;
-
-  // FIXME: This declaration could be masked. Investigate if
-  // there is a way to avoid using Sema.
-  bool AlreadyHasUsingDecl =
-      !match(stmt(hasAncestor(decl(has(usingDecl(hasAnyUsingShadowDecl(
-                 hasTargetDecl(hasName(QualifiedName.str())))))))),
-             Statement, Context)
-           .empty();
-  if (AlreadyHasUsingDecl) {
-    AddedUsing.emplace(NameInFunction(Function, QualifiedName.str()));
-    return None;
-  }
-  // Find conflicting declarations and references.
-  auto ConflictingDecl = namedDecl(hasName(UnqualifiedName));
-  bool HasConflictingDeclaration =
-      !match(findAll(ConflictingDecl), *Function, Context).empty();
-  bool HasConflictingDeclRef =
-      !match(findAll(declRefExpr(to(ConflictingDecl))), *Function, Context)
-           .empty();
-  if (HasConflictingDeclaration || HasConflictingDeclRef)
-    return None;
-
-  std::string Declaration = (llvm::Twine("\nusing ") + QualifiedName + ";").str();
-
-  AddedUsing.emplace(std::make_pair(Function, QualifiedName.str()));
-  return FixItHint::CreateInsertion(InsertLoc, Declaration);
-}
-
-StringRef UsingInserter::getShortName(ASTContext &Context,
-                                      const Stmt &Statement,
-                                      StringRef QualifiedName) {
-  const FunctionDecl *Function = getSurroundingFunction(Context, Statement);
-  if (AddedUsing.count(NameInFunction(Function, QualifiedName.str())) != 0)
-    return getUnqualifiedName(QualifiedName);
-  return QualifiedName;
-}
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang

Removed: clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.h?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.h (original)
+++ clang-tools-extra/trunk/clang-tidy/utils/UsingInserter.h (removed)
@@ -1,50 +0,0 @@
-//===---------- UsingInserter.h - clang-tidy ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
-#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
-
-#include "clang/AST/Decl.h"
-#include "clang/AST/Stmt.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/SourceManager.h"
-#include <set>
-
-namespace clang {
-namespace tidy {
-namespace utils {
-
-// UsingInserter adds using declarations for |QualifiedName| to the surrounding
-// function.
-// This allows using a shorter name without clobbering other scopes.
-class UsingInserter {
-public:
-  UsingInserter(const SourceManager &SourceMgr);
-
-  // Creates a \p using declaration fixit. Returns ``llvm::None`` on error
-  // or if the using declaration already exists.
-  llvm::Optional<FixItHint>
-  createUsingDeclaration(ASTContext &Context, const Stmt &Statement,
-                         llvm::StringRef QualifiedName);
-
-  // Returns the unqualified version of the name if there is an
-  // appropriate using declaration and the qualified name otherwise.
-  llvm::StringRef getShortName(ASTContext &Context, const Stmt &Statement,
-                               llvm::StringRef QualifiedName);
-
-private:
-  typedef NameInFunction std::pair<const FunctionDecl *, std::string>;
-  const SourceManager &SourceMgr;
-  std::set<NameInFunction> AddedUsing;
-};
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang
-#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H

Removed: clang-tools-extra/trunk/unittests/clang-tidy/NamespaceAliaserTest.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/unittests/clang-tidy/NamespaceAliaserTest.cpp?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/unittests/clang-tidy/NamespaceAliaserTest.cpp (original)
+++ clang-tools-extra/trunk/unittests/clang-tidy/NamespaceAliaserTest.cpp (removed)
@@ -1,124 +0,0 @@
-//===---- NamespaceAliaserTest.cpp - clang-tidy
-//----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "../clang-tidy/utils/NamespaceAliaser.h"
-
-#include "ClangTidyTest.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/ASTMatchers/ASTMatchers.h"
-#include "gtest/gtest.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-// This checker is for testing only. It can only run on one test case
-// (e.g. with one SourceManager).
-class InsertAliasCheck : public ClangTidyCheck {
-public:
-  using ClangTidyCheck::ClangTidyCheck;
-  void registerMatchers(ast_matchers::MatchFinder *Finder) override {
-    Finder->addMatcher(ast_matchers::callExpr().bind("foo"), this);
-  }
-  void
-  check(const ast_matchers::MatchFinder::MatchResult &Result) override {
-    if (!Aliaser)
-      Aliaser.reset(new NamespaceAliaser(*Result.SourceManager));
-
-    const CallExpr *Call =
-        Result.Nodes.getNodeAs<CallExpr>("foo");
-    assert(Call != nullptr && "Did not find node \"foo\"");
-    auto Hint = Aliaser->createAlias(*Result.Context, *Call, "::foo::bar",
-                                     {"b", "some_alias"});
-    if (Hint.hasValue())
-      diag(Call->getLocStart(), "Fix for testing") << Hint.getValue();
-
-    diag(Call->getLocStart(), "insert call")
-        << FixItHint::CreateInsertion(
-               Call->getLocStart(),
-               Aliaser->getNamespaceName(*Result.Context, *Call, "::foo::bar") +
-                   "::");
-  }
-
-private:
-  std::unique_ptr<NamespaceAliaser> Aliaser;
-};
-
-template <typename Check>
-std::string runChecker(StringRef Code, int ExpectedWarningCount) {
-  std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h",
-                                                            "namespace foo {\n"
-                                                            "namespace bar {\n"
-                                                            "}\n"
-                                                            "void func() { }\n"
-                                                            "}"}};
-  std::vector<ClangTidyError> errors;
-
-  std::string result =
-      test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None,
-                                  ClangTidyOptions(), AdditionalFileContents);
-
-  EXPECT_EQ(ExpectedWarningCount, errors.size());
-  return result;
-}
-
-TEST(NamespaceAliaserTest, AddNewAlias) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "void f() {\n"
-            "namespace b = ::foo::bar;"
-            " b::f(); }",
-            runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
-                                         "void f() { f(); }",
-                                         2));
-}
-
-TEST(NamespaceAliaserTest, ReuseAlias) {
-  EXPECT_EQ(
-      "#include \"foo.h\"\n"
-      "void f() { namespace x = foo::bar; x::f(); }",
-      runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
-                                   "void f() { namespace x = foo::bar; f(); }",
-                                   1));
-}
-
-TEST(NamespaceAliaserTest, AddsOnlyOneAlias) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "void f() {\n"
-            "namespace b = ::foo::bar;"
-            " b::f(); b::f(); }",
-            runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
-                                         "void f() { f(); f(); }",
-                                         3));
-}
-
-TEST(NamespaceAliaserTest, LocalConflict) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "void f() {\n"
-            "namespace some_alias = ::foo::bar;"
-            " namespace b = foo; some_alias::f(); }",
-            runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
-                                         "void f() { namespace b = foo; f(); }",
-                                         2));
-}
-
-TEST(NamespaceAliaserTest, GlobalConflict) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "namespace b = foo;\n"
-            "void f() {\n"
-            "namespace some_alias = ::foo::bar;"
-            " some_alias::f(); }",
-            runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
-                                         "namespace b = foo;\n"
-                                         "void f() { f(); }",
-                                         2));
-}
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang

Removed: clang-tools-extra/trunk/unittests/clang-tidy/UsingInserterTest.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/unittests/clang-tidy/UsingInserterTest.cpp?rev=283984&view=auto
==============================================================================
--- clang-tools-extra/trunk/unittests/clang-tidy/UsingInserterTest.cpp (original)
+++ clang-tools-extra/trunk/unittests/clang-tidy/UsingInserterTest.cpp (removed)
@@ -1,115 +0,0 @@
-//===---- UsingInserterTest.cpp - clang-tidy ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "../clang-tidy/utils/UsingInserter.h"
-
-#include "ClangTidyTest.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/ASTMatchers/ASTMatchers.h"
-#include "gtest/gtest.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-
-// Replace all function calls with calls to foo::func. Inserts using
-// declarations as necessary. This checker is for testing only. It
-// can only run on one test case (e.g. wih one SourceManager).
-class InsertUsingCheck : public clang::tidy::ClangTidyCheck {
-public:
-  using clang::tidy::ClangTidyCheck::ClangTidyCheck;
-  void registerMatchers(clang::ast_matchers::MatchFinder *Finder) override {
-    Finder->addMatcher(clang::ast_matchers::callExpr().bind("foo"), this);
-  }
-  void
-  check(const clang::ast_matchers::MatchFinder::MatchResult &Result) override {
-    if (!Inserter)
-      Inserter.reset(new UsingInserter(*Result.SourceManager,
-                                       Result.Context->getLangOpts()));
-
-    const clang::CallExpr *Call =
-        Result.Nodes.getNodeAs<clang::CallExpr>("foo");
-    assert(Call != nullptr && "Did not find node \"foo\"");
-    auto Hint =
-        Inserter->createUsingDeclaration(*Result.Context, *Call, "::foo::func");
-
-    if (Hint.hasValue())
-      diag(Call->getLocStart(), "Fix for testing") << Hint.getValue();
-
-    diag(Call->getLocStart(), "insert call")
-        << clang::FixItHint::CreateReplacement(
-               Call->getCallee()->getSourceRange(),
-               Inserter->getShortName(*Result.Context, *Call, "::foo::func"));
-  }
-
-private:
-  std::unique_ptr<UsingInserter> Inserter;
-};
-
-template <typename Check>
-std::string runChecker(StringRef Code, int ExpectedWarningCount) {
-  std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h",
-                                                            "namespace foo {\n"
-                                                            "namespace bar {\n"
-                                                            "}\n"
-                                                            "void func() { }\n"
-                                                            "}"}};
-  std::vector<ClangTidyError> errors;
-
-  std::string result =
-      test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None,
-                                  ClangTidyOptions(), AdditionalFileContents);
-
-  EXPECT_EQ(ExpectedWarningCount, errors.size());
-  return result;
-}
-
-TEST(UsingInserterTest, ReusesExisting) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "namespace {"
-            "using ::foo::func;\n"
-            "void f() { func(); }"
-            "}",
-            runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
-                                         "namespace {"
-                                         "using ::foo::func;\n"
-                                         "void f() { f(); }"
-                                         "}",
-                                         1));
-}
-
-TEST(UsingInserterTest, ReusesExistingGlobal) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "using ::foo::func;\n"
-            "namespace {"
-            "void f() { func(); }"
-            "}",
-            runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
-                                         "using ::foo::func;\n"
-                                         "namespace {"
-                                         "void f() { f(); }"
-                                         "}",
-                                         1));
-}
-
-TEST(UsingInserterTest, AvoidsConflict) {
-  EXPECT_EQ("#include \"foo.h\"\n"
-            "namespace {"
-            "void f() { int func; ::foo::func(); }"
-            "}",
-            runChecker<InsertUsingCheck>("#include \"foo.h\"\n"
-                                         "namespace {"
-                                         "void f() { int func; f(); }"
-                                         "}",
-                                         1));
-}
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang




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