1 files changed, 0 insertions, 102 deletions
diff --git a/clang-tools-extra/clang-tidy/misc/SwappedArgumentsCheck.cpp b/clang-tools-extra/clang-tidy/misc/SwappedArgumentsCheck.cpp
deleted file mode 100644
index e4dc5ca056a..00000000000
--- a/clang-tools-extra/clang-tidy/misc/SwappedArgumentsCheck.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-//===--- SwappedArgumentsCheck.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 "SwappedArgumentsCheck.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/Lex/Lexer.h"
-#include "clang/Tooling/FixIt.h"
-#include "llvm/ADT/SmallPtrSet.h"
-
-using namespace clang::ast_matchers;
-
-namespace clang {
-namespace tidy {
-namespace misc {
-
-void SwappedArgumentsCheck::registerMatchers(MatchFinder *Finder) {
-  Finder->addMatcher(callExpr().bind("call"), this);
-}
-
-/// \brief Look through lvalue to rvalue and nop casts. This filters out
-/// implicit conversions that have no effect on the input but block our view for
-/// other implicit casts.
-static const Expr *ignoreNoOpCasts(const Expr *E) {
-  if (auto *Cast = dyn_cast<CastExpr>(E))
-    if (Cast->getCastKind() == CK_LValueToRValue ||
-        Cast->getCastKind() == CK_NoOp)
-      return ignoreNoOpCasts(Cast->getSubExpr());
-  return E;
-}
-
-/// \brief Restrict the warning to implicit casts that are most likely
-/// accidental. User defined or integral conversions fit in this category,
-/// lvalue to rvalue or derived to base does not.
-static bool isImplicitCastCandidate(const CastExpr *Cast) {
-  return Cast->getCastKind() == CK_UserDefinedConversion ||
-         Cast->getCastKind() == CK_FloatingToBoolean ||
-         Cast->getCastKind() == CK_FloatingToIntegral ||
-         Cast->getCastKind() == CK_IntegralToBoolean ||
-         Cast->getCastKind() == CK_IntegralToFloating ||
-         Cast->getCastKind() == CK_MemberPointerToBoolean ||
-         Cast->getCastKind() == CK_PointerToBoolean;
-}
-
-void SwappedArgumentsCheck::check(const MatchFinder::MatchResult &Result) {
-  const ASTContext &Ctx = *Result.Context;
-  const auto *Call = Result.Nodes.getNodeAs<CallExpr>("call");
-
-  llvm::SmallPtrSet<const Expr *, 4> UsedArgs;
-  for (unsigned I = 1, E = Call->getNumArgs(); I < E; ++I) {
-    const Expr *LHS = Call->getArg(I - 1);
-    const Expr *RHS = Call->getArg(I);
-
-    // Only need to check RHS, as LHS has already been covered. We don't want to
-    // emit two warnings for a single argument.
-    if (UsedArgs.count(RHS))
-      continue;
-
-    const auto *LHSCast = dyn_cast<ImplicitCastExpr>(ignoreNoOpCasts(LHS));
-    const auto *RHSCast = dyn_cast<ImplicitCastExpr>(ignoreNoOpCasts(RHS));
-
-    // Look if this is a potentially swapped argument pair. First look for
-    // implicit casts.
-    if (!LHSCast || !RHSCast || !isImplicitCastCandidate(LHSCast) ||
-        !isImplicitCastCandidate(RHSCast))
-      continue;
-
-    // If the types that go into the implicit casts match the types of the other
-    // argument in the declaration there is a high probability that the
-    // arguments were swapped.
-    // TODO: We could make use of the edit distance between the argument name
-    // and the name of the passed variable in addition to this type based
-    // heuristic.
-    const Expr *LHSFrom = ignoreNoOpCasts(LHSCast->getSubExpr());
-    const Expr *RHSFrom = ignoreNoOpCasts(RHSCast->getSubExpr());
-    if (LHS->getType() == RHS->getType() ||
-        LHS->getType() != RHSFrom->getType() ||
-        RHS->getType() != LHSFrom->getType())
-      continue;
-
-    // Emit a warning and fix-its that swap the arguments.
-    diag(Call->getLocStart(), "argument with implicit conversion from %0 "
-                              "to %1 followed by argument converted from "
-                              "%2 to %3, potentially swapped arguments.")
-        << LHS->getType() << LHSFrom->getType() << RHS->getType()
-        << RHSFrom->getType()
-        << tooling::fixit::createReplacement(*LHS, *RHS, Ctx)
-        << tooling::fixit::createReplacement(*RHS, *LHS, Ctx);
-
-    // Remember that we emitted a warning for this argument.
-    UsedArgs.insert(RHSCast);
-  }
-}
-
-} // namespace misc
-} // namespace tidy
-} // namespace clang