C++ (Cpp) ObjCInterfaceDecl::isArcWeakrefUnavailable 예제들

예제 #1

bool trans::canApplyWeak(ASTContext &Ctx, QualType type,
                         bool AllowOnUnknownClass) {
  if (!Ctx.getLangOpts().ObjCARCWeak)
    return false;

  QualType T = type;
  if (T.isNull())
    return false;

  // iOS is always safe to use 'weak'.
  if (Ctx.getTargetInfo().getTriple().getOS() == llvm::Triple::IOS)
    AllowOnUnknownClass = true;

  while (const PointerType *ptr = T->getAs<PointerType>())
    T = ptr->getPointeeType();
  if (const ObjCObjectPointerType *ObjT = T->getAs<ObjCObjectPointerType>()) {
    ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl();
    if (!AllowOnUnknownClass && (!Class || Class->getName() == "NSObject"))
      return false; // id/NSObject is not safe for weak.
    if (!AllowOnUnknownClass && !Class->hasDefinition())
      return false; // forward classes are not verifiable, therefore not safe.
    if (Class && Class->isArcWeakrefUnavailable())
      return false;
  }

  return true;
}

예제 #2

파일: Transforms.cpp 프로젝트: Bootz/multicore-opimization

bool trans::canApplyWeak(ASTContext &Ctx, QualType type,
                         bool AllowOnUnknownClass) {
  if (!Ctx.getLangOptions().ObjCRuntimeHasWeak)
    return false;

  QualType T = type;
  if (T.isNull())
    return false;

  while (const PointerType *ptr = T->getAs<PointerType>())
    T = ptr->getPointeeType();
  if (const ObjCObjectPointerType *ObjT = T->getAs<ObjCObjectPointerType>()) {
    ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl();
    if (!AllowOnUnknownClass && (!Class || Class->getName() == "NSObject"))
      return false; // id/NSObject is not safe for weak.
    if (!AllowOnUnknownClass && Class->isForwardDecl())
      return false; // forward classes are not verifiable, therefore not safe.
    if (Class->isArcWeakrefUnavailable())
      return false;
    if (isClassInWeakBlacklist(Class))
      return false;
  }

  return true;
}