Revert "[ClangTidy] Add UsingInserter and NamespaceAliaser"

This reverts commit r283981. This patch breaks the buildbot.

llvm-svn: 283985

1 files changed, 0 insertions, 88 deletions

diff --git a/clang-tools-extra/clang-tidy/utils/UsingInserter.cpp b/clang-tools-extra/clang-tidy/utils/UsingInserter.cpp
deleted file mode 100644
index c0746afc9ab..00000000000
--- a/clang-tools-extra/clang-tidy/utils/UsingInserter.cpp
+++ /dev/null
@@ -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