chromium/storage/browser/blob/blob_data_builder.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#ifndef STORAGE_BROWSER_BLOB_BLOB_DATA_BUILDER_H_
#define STORAGE_BROWSER_BLOB_BLOB_DATA_BUILDER_H_

#include <stddef.h>
#include <stdint.h>
#include <ostream>
#include <string>
#include <vector>

#include "base/component_export.h"
#include "base/files/file_path.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/scoped_refptr.h"
#include "base/numerics/checked_math.h"
#include "components/file_access/scoped_file_access_delegate.h"
#include "components/services/storage/public/mojom/blob_storage_context.mojom.h"
#include "storage/browser/blob/blob_data_item.h"
#include "storage/browser/blob/blob_data_snapshot.h"
#include "storage/browser/blob/blob_entry.h"
#include "storage/browser/blob/shareable_blob_data_item.h"
#include "storage/browser/blob/shareable_file_reference.h"
#include "storage/browser/file_system/file_system_context.h"

namespace storage {
class BlobSliceTest;
class BlobStorageContext;
class BlobStorageRegistry;
class FileSystemURL;

// This class is used to build blobs. It also facilitates the operation of
// 'pending' data, where the user knows the size and existence of a file or
// bytes item, but we don't have the memory or file yet. See AppendFuture* and
// PopulateFuture* methods for more description. Use
// BlobDataHandle::GetBlobStatus to check for an error after creating the blob.
class COMPONENT_EXPORT(STORAGE_BROWSER) BlobDataBuilder { … };

#if defined(UNIT_TEST)
inline bool operator==(const BlobDataSnapshot& a, const BlobDataBuilder& b) {
  return a == *b.CreateSnapshot();
}

inline bool operator==(const BlobDataBuilder& a, const BlobDataBuilder& b) {
  return *a.CreateSnapshot() == b;
}

inline bool operator==(const BlobDataBuilder& a, const BlobDataSnapshot& b) {
  return b == a;
}

inline bool operator!=(const BlobDataSnapshot& a, const BlobDataBuilder& b) {
  return !(a == b);
}

inline bool operator!=(const BlobDataBuilder& a, const BlobDataBuilder& b) {
  return !(a == b);
}

inline bool operator!=(const BlobDataBuilder& a, const BlobDataSnapshot& b) {
  return b != a;
}

#endif  // defined(UNIT_TEST)

}  // namespace storage
#endif  // STORAGE_BROWSER_BLOB_BLOB_DATA_BUILDER_H_