gecko-dev/dom/indexedDB/DBSchema.h

47 строки
1.6 KiB
C++

/* -*- 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 dom_indexeddb_dbschema_h__
#define dom_indexeddb_dbschema_h__
#include "ErrorList.h"
#include <cstdint>
class mozIStorageConnection;
namespace mozilla::dom::indexedDB {
// Major schema version. Bump for almost everything.
const uint32_t kMajorSchemaVersion = 26;
// Minor schema version. Should almost always be 0 (maybe bump on release
// branches if we have to).
const uint32_t kMinorSchemaVersion = 0;
// The schema version we store in the SQLite database is a (signed) 32-bit
// integer. The major version is left-shifted 4 bits so the max value is
// 0xFFFFFFF. The minor version occupies the lower 4 bits and its max is 0xF.
static_assert(kMajorSchemaVersion <= 0xFFFFFFF,
"Major version needs to fit in 28 bits.");
static_assert(kMinorSchemaVersion <= 0xF,
"Minor version needs to fit in 4 bits.");
constexpr int32_t MakeSchemaVersion(uint32_t aMajorSchemaVersion,
uint32_t aMinorSchemaVersion) {
return int32_t((aMajorSchemaVersion << 4) + aMinorSchemaVersion);
}
constexpr int32_t kSQLiteSchemaVersion =
MakeSchemaVersion(kMajorSchemaVersion, kMinorSchemaVersion);
nsresult CreateFileTables(mozIStorageConnection& aConnection);
nsresult CreateTables(mozIStorageConnection& aConnection);
} // namespace mozilla::dom::indexedDB
#endif