gecko-dev/dom/base/Comment.cpp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * Implementations of DOM Core's Comment node.
 */

#include "nsCOMPtr.h"
#include "mozilla/dom/Comment.h"
#include "mozilla/dom/CommentBinding.h"
#include "mozilla/IntegerPrintfMacros.h"

using namespace mozilla;
using namespace dom;

namespace mozilla {
namespace dom {

Comment::~Comment() = default;

already_AddRefed<CharacterData> Comment::CloneDataNode(
    mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const {
  RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
  auto* nim = ni->NodeInfoManager();
  RefPtr<Comment> it = new (nim) Comment(ni.forget());
  if (aCloneText) {
    it->mText = mText;
  }

  return it.forget();
}

#ifdef DEBUG
void Comment::List(FILE* out, int32_t aIndent) const {
  int32_t indx;
  for (indx = aIndent; --indx >= 0;) fputs("  ", out);

  fprintf(out, "Comment@%p refcount=%" PRIuPTR "<!--", (void*)this,
          mRefCnt.get());

  nsAutoString tmp;
  ToCString(tmp, 0, mText.GetLength());
  fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);

  fputs("-->\n", out);
}
#endif

/* static */
already_AddRefed<Comment> Comment::Constructor(const GlobalObject& aGlobal,
                                               const nsAString& aData,
                                               ErrorResult& aRv) {
  nsCOMPtr<nsPIDOMWindowInner> window =
      do_QueryInterface(aGlobal.GetAsSupports());
  if (!window || !window->GetDoc()) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  return window->GetDoc()->CreateComment(aData);
}

JSObject* Comment::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  return Comment_Binding::Wrap(aCx, this, aGivenProto);
}

}  // namespace dom
}  // namespace mozilla