gecko-dev/dom/file/StringBlobImpl.h

/* -*- 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/. */

#ifndef mozilla_dom_StringBlobImpl_h
#define mozilla_dom_StringBlobImpl_h

#include "BaseBlobImpl.h"
#include "nsIMemoryReporter.h"

namespace mozilla {
namespace dom {

class StringBlobImpl final : public BaseBlobImpl
                           , public nsIMemoryReporter
{
  MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf)

public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIMEMORYREPORTER

  static already_AddRefed<StringBlobImpl>
  Create(const nsACString& aData, const nsAString& aContentType);

  virtual void CreateInputStream(nsIInputStream** aStream,
                                 ErrorResult& aRv) override;

  virtual already_AddRefed<BlobImpl>
  CreateSlice(uint64_t aStart, uint64_t aLength,
              const nsAString& aContentType, ErrorResult& aRv) override;

  size_t GetAllocationSize() const override
  {
    return mData.Length();
  }

private:
  StringBlobImpl(const nsACString& aData, const nsAString& aContentType);

  ~StringBlobImpl();

  nsCString mData;
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_StringBlobImpl_h