C++ (Cpp) DWARFDie::children Examples

Example #1

File: DWARFDie.cpp Project: jvesely/llvm

static void dumpArrayType(raw_ostream &OS, const DWARFDie &D) {
  Optional<uint64_t> Bound;
  for (const DWARFDie &C : D.children())
    if (C.getTag() == DW_TAG_subrange_type) {
      Optional<uint64_t> LB;
      Optional<uint64_t> Count;
      Optional<uint64_t> UB;
      Optional<unsigned> DefaultLB;
      if (Optional<DWARFFormValue> L = C.find(DW_AT_lower_bound))
        LB = L->getAsUnsignedConstant();
      if (Optional<DWARFFormValue> CountV = C.find(DW_AT_count))
        Count = CountV->getAsUnsignedConstant();
      if (Optional<DWARFFormValue> UpperV = C.find(DW_AT_upper_bound))
        UB = UpperV->getAsUnsignedConstant();
      if (Optional<DWARFFormValue> LV =
              D.getDwarfUnit()->getUnitDIE().find(DW_AT_language))
        if (Optional<uint64_t> LC = LV->getAsUnsignedConstant())
          if ((DefaultLB =
                   LanguageLowerBound(static_cast<dwarf::SourceLanguage>(*LC))))
            if (LB && *LB == *DefaultLB)
              LB = None;
      if (!LB && !Count && !UB)
        OS << "[]";
      else if (!LB && (Count || UB) && DefaultLB)
        OS << '[' << (Count ? *Count : *UB - *DefaultLB + 1) << ']';
      else {
        OS << "[[";
        if (LB)
          OS << *LB;
        else
          OS << '?';
        OS << ", ";
        if (Count)
          if (LB)
            OS << *LB + *Count;
          else
            OS << "? + " << *Count;
        else if (UB)
          OS << *UB + 1;
        else
          OS << '?';
        OS << ")]";
      }
    }
}

Example #2

File: DWARFDie.cpp Project: jvesely/llvm

/// Recursively dump the DIE type name when applicable.
static void dumpTypeName(raw_ostream &OS, const DWARFDie &D) {
  if (!D.isValid())
    return;

  if (const char *Name = D.getName(DINameKind::LinkageName)) {
    OS << Name;
    return;
  }

  // FIXME: We should have pretty printers per language. Currently we print
  // everything as if it was C++ and fall back to the TAG type name.
  const dwarf::Tag T = D.getTag();
  switch (T) {
  case DW_TAG_array_type:
  case DW_TAG_pointer_type:
  case DW_TAG_ptr_to_member_type:
  case DW_TAG_reference_type:
  case DW_TAG_rvalue_reference_type:
  case DW_TAG_subroutine_type:
    break;
  default:
    dumpTypeTagName(OS, T);
  }

  // Follow the DW_AT_type if possible.
  DWARFDie TypeDie = D.getAttributeValueAsReferencedDie(DW_AT_type);
  dumpTypeName(OS, TypeDie);

  switch (T) {
  case DW_TAG_subroutine_type: {
    if (!TypeDie)
      OS << "void";
    OS << '(';
    bool First = true;
    for (const DWARFDie &C : D.children()) {
      if (C.getTag() == DW_TAG_formal_parameter) {
        if (!First)
          OS << ", ";
        First = false;
        dumpTypeName(OS, C.getAttributeValueAsReferencedDie(DW_AT_type));
      }
    }
    OS << ')';
    break;
  }
  case DW_TAG_array_type: {
    dumpArrayType(OS, D);
    break;
  }
  case DW_TAG_pointer_type:
    OS << '*';
    break;
  case DW_TAG_ptr_to_member_type:
    if (DWARFDie Cont =
            D.getAttributeValueAsReferencedDie(DW_AT_containing_type)) {
      dumpTypeName(OS << ' ', Cont);
      OS << "::";
    }
    OS << '*';
    break;
  case DW_TAG_reference_type:
    OS << '&';
    break;
  case DW_TAG_rvalue_reference_type:
    OS << "&&";
    break;
  default:
    break;
  }
}