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/* -*- 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_indexeddb_actorsparentcommon_h__
#define mozilla_dom_indexeddb_actorsparentcommon_h__
// Declares functions and types used locally within IndexedDB, which are defined
// in ActorsParent.cpp
#include <stdint.h>
#include <tuple>
#include <utility>
#include "ErrorList.h"
#include "mozilla/Result.h"
#include "mozilla/Span.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/UniquePtrExtensions.h"
#include "mozilla/dom/indexedDB/Key.h"
#include "nscore.h"
#include "nsISupports.h"
#include "nsStringFwd.h"
#include "nsTArray.h"
struct JSContext;
class JSObject;
class mozIStorageConnection;
class mozIStorageStatement;
class mozIStorageValueArray;
namespace mozilla::dom::indexedDB {
class DatabaseFileManager;
struct StructuredCloneFileParent;
struct StructuredCloneReadInfoParent;
extern const nsLiteralString kJournalDirectoryName;
// At the moment, the encrypted stream block size is assumed to be unchangeable
// between encrypting and decrypting blobs. This assumptions holds as long as we
// only encrypt in private browsing mode, but when we support encryption for
// persistent storage, this needs to be changed.
constexpr uint32_t kEncryptedStreamBlockSize = 4096;
using IndexOrObjectStoreId = int64_t;
struct IndexDataValue final {
IndexOrObjectStoreId mIndexId;
Key mPosition;
Key mLocaleAwarePosition;
bool mUnique;
IndexDataValue();
#if defined(DEBUG) || defined(NS_BUILD_REFCNT_LOGGING)
IndexDataValue(IndexDataValue&& aOther) noexcept;
#else
IndexDataValue(IndexDataValue&& aOther) = default;
#endif
IndexDataValue(IndexOrObjectStoreId aIndexId, bool aUnique,
const Key& aPosition);
IndexDataValue(IndexOrObjectStoreId aIndexId, bool aUnique,
const Key& aPosition, const Key& aLocaleAwarePosition);
#ifdef NS_BUILD_REFCNT_LOGGING
MOZ_COUNTED_DTOR(IndexDataValue)
#endif
IndexDataValue& operator=(IndexDataValue&& aOther) = default;
bool operator==(const IndexDataValue& aOther) const;
bool operator<(const IndexDataValue& aOther) const;
};
JSObject* GetSandbox(JSContext* aCx);
// The success value of the Result is a a pair of a pointer to the compressed
// index data values buffer and its size. The function does not return a
// nsTArray because the result is typically passed to a function that acquires
// ownership of the pointer.
Result<std::pair<UniqueFreePtr<uint8_t>, uint32_t>, nsresult>
MakeCompressedIndexDataValues(const nsTArray<IndexDataValue>& aIndexValues);
// aOutIndexValues is an output parameter, since its storage is reused.
nsresult ReadCompressedIndexDataValues(
mozIStorageStatement& aStatement, uint32_t aColumnIndex,
nsTArray<IndexDataValue>& aOutIndexValues);
using IndexDataValuesAutoArray = AutoTArray<IndexDataValue, 32>;
template <typename T>
Result<IndexDataValuesAutoArray, nsresult> ReadCompressedIndexDataValues(
T& aValues, uint32_t aColumnIndex);
Result<std::tuple<IndexOrObjectStoreId, bool, Span<const uint8_t>>, nsresult>
ReadCompressedIndexId(Span<const uint8_t> aData);
Result<std::pair<uint64_t, mozilla::Span<const uint8_t>>, nsresult>
ReadCompressedNumber(Span<const uint8_t> aSpan);
Result<StructuredCloneReadInfoParent, nsresult>
GetStructuredCloneReadInfoFromValueArray(
mozIStorageValueArray* aValues, uint32_t aDataIndex, uint32_t aFileIdsIndex,
const DatabaseFileManager& aFileManager);
Result<StructuredCloneReadInfoParent, nsresult>
GetStructuredCloneReadInfoFromStatement(
mozIStorageStatement* aStatement, uint32_t aDataIndex,
uint32_t aFileIdsIndex, const DatabaseFileManager& aFileManager);
Result<nsTArray<StructuredCloneFileParent>, nsresult>
DeserializeStructuredCloneFiles(const DatabaseFileManager& aFileManager,
const nsAString& aText);
nsresult ExecuteSimpleSQLSequence(mozIStorageConnection& aConnection,
Span<const nsLiteralCString> aSQLCommands);
} // namespace mozilla::dom::indexedDB
#endif // mozilla_dom_indexeddb_actorsparent_h__
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