C++ ConstString::AsCString方法代码示例

static lldb::addr_t
GetObjectPointer (lldb::StackFrameSP frame_sp,
                  ConstString &object_name,
                  Error &err)
{
    err.Clear();

    if (!frame_sp)
    {
        err.SetErrorStringWithFormat("Couldn't load '%s' because the context is incomplete", object_name.AsCString());
        return LLDB_INVALID_ADDRESS;
    }

    lldb::VariableSP var_sp;
    lldb::ValueObjectSP valobj_sp;

    valobj_sp = frame_sp->GetValueForVariableExpressionPath(object_name.AsCString(),
                                                            lldb::eNoDynamicValues,
                                                            StackFrame::eExpressionPathOptionCheckPtrVsMember |
                                                            StackFrame::eExpressionPathOptionsNoFragileObjcIvar |
                                                            StackFrame::eExpressionPathOptionsNoSyntheticChildren |
                                                            StackFrame::eExpressionPathOptionsNoSyntheticArrayRange,
                                                            var_sp,
                                                            err);

    if (!err.Success() || !valobj_sp.get())
        return LLDB_INVALID_ADDRESS;

    lldb::addr_t ret = valobj_sp->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);

    if (ret == LLDB_INVALID_ADDRESS)
    {
        err.SetErrorStringWithFormat("Couldn't load '%s' because its value couldn't be evaluated", object_name.AsCString());
        return LLDB_INVALID_ADDRESS;
    }

    return ret;
}

void
Symbol::GetDescription (Stream *s, lldb::DescriptionLevel level, Target *target) const
{
    s->Printf("id = {0x%8.8x}", m_uid);
    
    if (m_addr_range.GetBaseAddress().GetSection())
    {
        if (ValueIsAddress())
        {
            const lldb::addr_t byte_size = GetByteSize();
            if (byte_size > 0)
            {
                s->PutCString (", range = ");
                m_addr_range.Dump(s, target, Address::DumpStyleLoadAddress, Address::DumpStyleFileAddress);
            }
            else 
            {
                s->PutCString (", address = ");
                m_addr_range.GetBaseAddress().Dump(s, target, Address::DumpStyleLoadAddress, Address::DumpStyleFileAddress);
            }
        }
        else
            s->Printf (", value = 0x%16.16" PRIx64, m_addr_range.GetBaseAddress().GetOffset());
    }
    else
    {
        if (m_size_is_sibling)                
            s->Printf (", sibling = %5" PRIu64, m_addr_range.GetBaseAddress().GetOffset());
        else
            s->Printf (", value = 0x%16.16" PRIx64, m_addr_range.GetBaseAddress().GetOffset());
    }
    ConstString demangled = m_mangled.GetDemangledName(GetLanguage());
    if (demangled)
        s->Printf(", name=\"%s\"", demangled.AsCString());
    if (m_mangled.GetMangledName())
        s->Printf(", mangled=\"%s\"", m_mangled.GetMangledName().AsCString());

}

//.........这里部分代码省略.........
                       platform_module_spec.GetFileSpec())) {
        // printf ("sdk[%u]: '%s'\n", sdk_idx, local_file.GetPath().c_str());

        error = ResolveExecutable(platform_module_spec, module_sp, nullptr);
        if (module_sp) {
          // Remember the index of the last SDK that we found a file
          // in in case the wrong SDK was selected.
          m_last_module_sdk_idx = sdk_idx;
          error.Clear();
          return error;
        }
      }
    }
  }
  // Not the module we are looking for... Nothing to see here...
  module_sp.reset();

  // This may not be an SDK-related module.  Try whether we can bring in the
  // thing to our local cache.
  error = GetSharedModuleWithLocalCache(module_spec, module_sp,
                                        module_search_paths_ptr,
                                        old_module_sp_ptr, did_create_ptr);
  if (error.Success())
    return error;

  // See if the file is present in any of the module_search_paths_ptr
  // directories.
  if (!module_sp && module_search_paths_ptr && platform_file) {
    // create a vector of all the file / directory names in platform_file
    // e.g. this might be
    // /System/Library/PrivateFrameworks/UIFoundation.framework/UIFoundation
    //
    // We'll need to look in the module_search_paths_ptr directories for
    // both "UIFoundation" and "UIFoundation.framework" -- most likely the
    // latter will be the one we find there.

    FileSpec platform_pull_apart(platform_file);
    std::vector<std::string> path_parts;
    ConstString unix_root_dir("/");
    while (true) {
      ConstString part = platform_pull_apart.GetLastPathComponent();
      platform_pull_apart.RemoveLastPathComponent();
      if (part.IsEmpty() || part == unix_root_dir)
        break;
      path_parts.push_back(part.AsCString());
    }
    const size_t path_parts_size = path_parts.size();

    size_t num_module_search_paths = module_search_paths_ptr->GetSize();
    for (size_t i = 0; i < num_module_search_paths; ++i) {
      // Create a new FileSpec with this module_search_paths_ptr
      // plus just the filename ("UIFoundation"), then the parent
      // dir plus filename ("UIFoundation.framework/UIFoundation")
      // etc - up to four names (to handle "Foo.framework/Contents/MacOS/Foo")

      for (size_t j = 0; j < 4 && j < path_parts_size - 1; ++j) {
        FileSpec path_to_try(module_search_paths_ptr->GetFileSpecAtIndex(i));

        // Add the components backwards.  For
        // .../PrivateFrameworks/UIFoundation.framework/UIFoundation
        // path_parts is
        //   [0] UIFoundation
        //   [1] UIFoundation.framework
        //   [2] PrivateFrameworks
        //
        // and if 'j' is 2, we want to append path_parts[1] and then
        // path_parts[0], aka
        // 'UIFoundation.framework/UIFoundation', to the module_search_paths_ptr
        // path.

        for (int k = j; k >= 0; --k) {
          path_to_try.AppendPathComponent(path_parts[k]);
        }

        if (path_to_try.Exists()) {
          ModuleSpec new_module_spec(module_spec);
          new_module_spec.GetFileSpec() = path_to_try;
          Error new_error(Platform::GetSharedModule(
              new_module_spec, process, module_sp, NULL, old_module_sp_ptr,
              did_create_ptr));

          if (module_sp) {
            module_sp->SetPlatformFileSpec(path_to_try);
            return new_error;
          }
        }
      }
    }
  }

  const bool always_create = false;
  error = ModuleList::GetSharedModule(
      module_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr,
      did_create_ptr, always_create);

  if (module_sp)
    module_sp->SetPlatformFileSpec(platform_file);

  return error;
}

  void Dematerialize(lldb::StackFrameSP &frame_sp, IRMemoryMap &map,
                     lldb::addr_t process_address, lldb::addr_t frame_top,
                     lldb::addr_t frame_bottom, Status &err) override {
    err.Clear();

    ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope();

    if (!exe_scope) {
      err.SetErrorString("Couldn't dematerialize a result variable: invalid "
                         "execution context scope");
      return;
    }

    lldb::addr_t address;
    Status read_error;
    const lldb::addr_t load_addr = process_address + m_offset;

    map.ReadPointerFromMemory(&address, load_addr, read_error);

    if (!read_error.Success()) {
      err.SetErrorString("Couldn't dematerialize a result variable: couldn't "
                         "read its address");
      return;
    }

    lldb::TargetSP target_sp = exe_scope->CalculateTarget();

    if (!target_sp) {
      err.SetErrorString("Couldn't dematerialize a result variable: no target");
      return;
    }

    Status type_system_error;
    TypeSystem *type_system = target_sp->GetScratchTypeSystemForLanguage(
        &type_system_error, m_type.GetMinimumLanguage());

    if (!type_system) {
      err.SetErrorStringWithFormat("Couldn't dematerialize a result variable: "
                                   "couldn't get the corresponding type "
                                   "system: %s",
                                   type_system_error.AsCString());
      return;
    }

    PersistentExpressionState *persistent_state =
        type_system->GetPersistentExpressionState();

    if (!persistent_state) {
      err.SetErrorString("Couldn't dematerialize a result variable: "
                         "corresponding type system doesn't handle persistent "
                         "variables");
      return;
    }

    ConstString name = m_delegate
                           ? m_delegate->GetName()
                           : persistent_state->GetNextPersistentVariableName();

    lldb::ExpressionVariableSP ret = persistent_state->CreatePersistentVariable(
        exe_scope, name, m_type, map.GetByteOrder(), map.GetAddressByteSize());

    if (!ret) {
      err.SetErrorStringWithFormat("couldn't dematerialize a result variable: "
                                   "failed to make persistent variable %s",
                                   name.AsCString());
      return;
    }

    lldb::ProcessSP process_sp =
        map.GetBestExecutionContextScope()->CalculateProcess();

    if (m_delegate) {
      m_delegate->DidDematerialize(ret);
    }

    bool can_persist =
        (m_is_program_reference && process_sp && process_sp->CanJIT() &&
         !(address >= frame_bottom && address < frame_top));

    if (can_persist && m_keep_in_memory) {
      ret->m_live_sp = ValueObjectConstResult::Create(exe_scope, m_type, name,
                                                      address, eAddressTypeLoad,
                                                      map.GetAddressByteSize());
    }

    ret->ValueUpdated();

    const size_t pvar_byte_size = ret->GetByteSize();
    uint8_t *pvar_data = ret->GetValueBytes();

    map.ReadMemory(pvar_data, address, pvar_byte_size, read_error);

    if (!read_error.Success()) {
      err.SetErrorString(
          "Couldn't dematerialize a result variable: couldn't read its memory");
      return;
    }

    if (!can_persist || !m_keep_in_memory) {
      ret->m_flags |= ExpressionVariable::EVNeedsAllocation;
//.........这里部分代码省略.........

 void
 Add (ConstString& type_name,
      ConstString& type_equivalent)
 {
     m_impl.Insert(type_name.AsCString(), type_equivalent);
 }

void
lldb_private::formatters::AddCXXSummary (TypeCategoryImpl::SharedPointer category_sp,
                                         CXXFunctionSummaryFormat::Callback funct,
                                         const char* description,
                                         ConstString type_name,
                                         TypeSummaryImpl::Flags flags,
                                         bool regex)
{
    lldb::TypeSummaryImplSP summary_sp(new CXXFunctionSummaryFormat(flags,funct,description));
    if (regex)
        category_sp->GetRegexTypeSummariesContainer()->Add(RegularExpressionSP(new RegularExpression(type_name.AsCString())),summary_sp);
    else
        category_sp->GetTypeSummariesContainer()->Add(type_name, summary_sp);
}

void
lldb_private::formatters::AddSummary(TypeCategoryImpl::SharedPointer category_sp,
                                     TypeSummaryImplSP summary_sp,
                                     ConstString type_name,
                                     bool regex)
{
    if (regex)
        category_sp->GetRegexTypeSummariesContainer()->Add(RegularExpressionSP(new RegularExpression(type_name.AsCString())),summary_sp);
    else
        category_sp->GetTypeSummariesContainer()->Add(type_name, summary_sp);
}

void
lldb_private::formatters::AddFormat (TypeCategoryImpl::SharedPointer category_sp,
                                     lldb::Format format,
                                     ConstString type_name,
                                     TypeFormatImpl::Flags flags,
                                     bool regex)
{
    lldb::TypeFormatImplSP format_sp(new TypeFormatImpl_Format(format, flags));
    
    if (regex)
        category_sp->GetRegexTypeFormatsContainer()->Add(RegularExpressionSP(new RegularExpression(type_name.AsCString())),format_sp);
    else
        category_sp->GetTypeFormatsContainer()->Add(type_name, format_sp);
}

void
lldb_private::formatters::AddFilter  (TypeCategoryImpl::SharedPointer category_sp,
                                      std::vector<std::string> children,
                                      const char* description,
                                      ConstString type_name,
                                      ScriptedSyntheticChildren::Flags flags,
                                      bool regex)
{
    TypeFilterImplSP filter_sp(new TypeFilterImpl(flags));
    for (auto child : children)
        filter_sp->AddExpressionPath(child);
    if (regex)
        category_sp->GetRegexTypeFiltersContainer()->Add(RegularExpressionSP(new RegularExpression(type_name.AsCString())), filter_sp);
    else
        category_sp->GetTypeFiltersContainer()->Add(type_name,filter_sp);
}

void
lldb_private::formatters::AddCXXSynthetic  (TypeCategoryImpl::SharedPointer category_sp,
                                            CXXSyntheticChildren::CreateFrontEndCallback generator,
                                            const char* description,
                                            ConstString type_name,
                                            ScriptedSyntheticChildren::Flags flags,
                                            bool regex)
{
    lldb::SyntheticChildrenSP synth_sp(new CXXSyntheticChildren(flags,description,generator));
    if (regex)
        category_sp->GetRegexTypeSyntheticsContainer()->Add(RegularExpressionSP(new RegularExpression(type_name.AsCString())), synth_sp);
    else
        category_sp->GetTypeSyntheticsContainer()->Add(type_name,synth_sp);
}

ValueObjectSP
ValueObject::GetChildMemberWithName (const ConstString &name, bool can_create)
{
    // when getting a child by name, it could be burried inside some base
    // classes (which really aren't part of the expression path), so we
    // need a vector of indexes that can get us down to the correct child
    std::vector<uint32_t> child_indexes;
    clang::ASTContext *clang_ast = GetClangAST();
    void *clang_type = GetOpaqueClangQualType();
    bool omit_empty_base_classes = true;
    const size_t num_child_indexes =  ClangASTContext::GetIndexOfChildMemberWithName (clang_ast,
                                                                                      clang_type,
                                                                                      name.AsCString(),
                                                                                      omit_empty_base_classes,
                                                                                      child_indexes);
    ValueObjectSP child_sp;
    if (num_child_indexes > 0)
    {
        std::vector<uint32_t>::const_iterator pos = child_indexes.begin ();
        std::vector<uint32_t>::const_iterator end = child_indexes.end ();

        child_sp = GetChildAtIndex(*pos, can_create);
        for (++pos; pos != end; ++pos)
        {
            if (child_sp)
            {
                ValueObjectSP new_child_sp(child_sp->GetChildAtIndex (*pos, can_create));
                child_sp = new_child_sp;
            }
            else
            {
                child_sp.reset();
            }

        }
    }
    return child_sp;
}