Пример #1
0
static uint64_t 
ComputeNonVirtualBaseClassOffset(ASTContext &Context, CXXBasePaths &Paths,
                                 unsigned Start) {
  uint64_t Offset = 0;

  const CXXBasePath &Path = Paths.front();
  for (unsigned i = Start, e = Path.size(); i != e; ++i) {
    const CXXBasePathElement& Element = Path[i];

    // Get the layout.
    const ASTRecordLayout &Layout = Context.getASTRecordLayout(Element.Class);
    
    const CXXBaseSpecifier *BS = Element.Base;
    // FIXME: enable test3 from virt.cc to not abort.
    if (BS->isVirtual())
      return 0;
    assert(!BS->isVirtual() && "Should not see virtual bases here!");
    
    const CXXRecordDecl *Base = 
      cast<CXXRecordDecl>(BS->getType()->getAs<RecordType>()->getDecl());
    
    // Add the offset.
    Offset += Layout.getBaseClassOffset(Base) / 8;
  }

  return Offset;
}
Пример #2
0
VTTBuilder::VTTBuilder(ASTContext &Ctx,
                       const CXXRecordDecl *MostDerivedClass,
                       bool GenerateDefinition)
  : Ctx(Ctx), MostDerivedClass(MostDerivedClass), 
  MostDerivedClassLayout(Ctx.getASTRecordLayout(MostDerivedClass)),
    GenerateDefinition(GenerateDefinition) {
  // Lay out this VTT.
  LayoutVTT(BaseSubobject(MostDerivedClass, CharUnits::Zero()), 
            /*BaseIsVirtual=*/false);
}
Пример #3
0
static void 
AddIndirectPrimaryBases(const CXXRecordDecl *RD, ASTContext &Context,
                        CXXIndirectPrimaryBaseSet& Bases) {
  // If the record has a virtual primary base class, add it to our set.
  const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD);
  if (Layout.isPrimaryBaseVirtual())
    Bases.insert(Layout.getPrimaryBase());

  for (const auto &I : RD->bases()) {
    assert(!I.getType()->isDependentType() &&
           "Cannot get indirect primary bases for class with dependent bases.");

    const CXXRecordDecl *BaseDecl =
      cast<CXXRecordDecl>(I.getType()->castAs<RecordType>()->getDecl());

    // Only bases with virtual bases participate in computing the
    // indirect primary virtual base classes.
    if (BaseDecl->getNumVBases())
      AddIndirectPrimaryBases(BaseDecl, Context, Bases);
  }

}