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Current Path: /usr/src/contrib/llvm-project/clang/lib/ARCMigrate

usr / src / contrib / llvm-project / clang / lib / ARCMigrate /

📁 ..
📄 ARCMT.cpp(21.93 KB)
📄 ARCMTActions.cpp(2.44 KB)
📄 FileRemapper.cpp(8.26 KB)
📄 Internals.h(5.47 KB)
📄 ObjCMT.cpp(81.85 KB)
📄 PlistReporter.cpp(3.64 KB)
📄 TransAPIUses.cpp(3.49 KB)
📄 TransARCAssign.cpp(2.25 KB)
📄 TransAutoreleasePool.cpp(14.26 KB)
📄 TransBlockObjCVariable.cpp(4.55 KB)
📄 TransEmptyStatementsAndDealloc.cpp(7 KB)
📄 TransGCAttrs.cpp(11.29 KB)
📄 TransGCCalls.cpp(2.54 KB)
📄 TransProperties.cpp(12.35 KB)
📄 TransProtectedScope.cpp(6.02 KB)
📄 TransRetainReleaseDealloc.cpp(13.65 KB)
📄 TransUnbridgedCasts.cpp(15.85 KB)
📄 TransUnusedInitDelegate.cpp(2.2 KB)
📄 TransZeroOutPropsInDealloc.cpp(6.71 KB)
📄 TransformActions.cpp(23.07 KB)
📄 Transforms.cpp(17.72 KB)
📄 Transforms.h(6.72 KB)

Editing: TransAPIUses.cpp

//===--- TransAPIUses.cpp - Transformations to ARC mode -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// checkAPIUses:
//
// Emits error/fix with some API uses that are obsolete or not safe in ARC mode:
//
// - NSInvocation's [get/set]ReturnValue and [get/set]Argument are only safe
//   with __unsafe_unretained objects.
// - Calling -zone gets replaced with 'nil'.
//
//===----------------------------------------------------------------------===//

#include "Transforms.h"
#include "Internals.h"
#include "clang/AST/ASTContext.h"
#include "clang/Sema/SemaDiagnostic.h"

using namespace clang;
using namespace arcmt;
using namespace trans;

namespace {

class APIChecker : public RecursiveASTVisitor<APIChecker> {
  MigrationPass &Pass;

Selector getReturnValueSel, setReturnValueSel;
  Selector getArgumentSel, setArgumentSel;

Selector zoneSel;
public:
  APIChecker(MigrationPass &pass) : Pass(pass) {
    SelectorTable &sels = Pass.Ctx.Selectors;
    IdentifierTable &ids = Pass.Ctx.Idents;
    getReturnValueSel = sels.getUnarySelector(&ids.get("getReturnValue"));
    setReturnValueSel = sels.getUnarySelector(&ids.get("setReturnValue"));

IdentifierInfo *selIds[2];
    selIds[0] = &ids.get("getArgument");
    selIds[1] = &ids.get("atIndex");
    getArgumentSel = sels.getSelector(2, selIds);
    selIds[0] = &ids.get("setArgument");
    setArgumentSel = sels.getSelector(2, selIds);

zoneSel = sels.getNullarySelector(&ids.get("zone"));
  }

bool VisitObjCMessageExpr(ObjCMessageExpr *E) {
    // NSInvocation.
    if (E->isInstanceMessage() &&
        E->getReceiverInterface() &&
        E->getReceiverInterface()->getName() == "NSInvocation") {
      StringRef selName;
      if (E->getSelector() == getReturnValueSel)
        selName = "getReturnValue";
      else if (E->getSelector() == setReturnValueSel)
        selName = "setReturnValue";
      else if (E->getSelector() == getArgumentSel)
        selName = "getArgument";
      else if (E->getSelector() == setArgumentSel)
        selName = "setArgument";
      else
        return true;

Expr *parm = E->getArg(0)->IgnoreParenCasts();
      QualType pointee = parm->getType()->getPointeeType();
      if (pointee.isNull())
        return true;

if (pointee.getObjCLifetime() > Qualifiers::OCL_ExplicitNone)
        Pass.TA.report(parm->getBeginLoc(),
                       diag::err_arcmt_nsinvocation_ownership,
                       parm->getSourceRange())
            << selName;

return true;
    }

// -zone.
    if (E->isInstanceMessage() &&
        E->getInstanceReceiver() &&
        E->getSelector() == zoneSel &&
        Pass.TA.hasDiagnostic(diag::err_unavailable,
                              diag::err_unavailable_message,
                              E->getSelectorLoc(0))) {
      // Calling -zone is meaningless in ARC, change it to nil.
      Transaction Trans(Pass.TA);
      Pass.TA.clearDiagnostic(diag::err_unavailable,
                              diag::err_unavailable_message,
                              E->getSelectorLoc(0));
      Pass.TA.replace(E->getSourceRange(), getNilString(Pass));
    }
    return true;
  }
};

} // anonymous namespace

void trans::checkAPIUses(MigrationPass &pass) {
  APIChecker(pass).TraverseDecl(pass.Ctx.getTranslationUnitDecl());
}

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Editing: TransAPIUses.cpp

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