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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_INDEXEDDB_IDB_ANY_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_INDEXEDDB_IDB_ANY_H_
#include <memory>
#include <optional>
#include "third_party/blink/renderer/modules/indexeddb/idb_key.h"
#include "third_party/blink/renderer/modules/indexeddb/idb_record_array.h"
#include "third_party/blink/renderer/modules/indexeddb/idb_value.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class IDBCursor;
class IDBCursorWithValue;
class IDBDatabase;
class IDBIndex;
class IDBObjectStore;
// IDBAny is used for:
// * source of IDBCursor (IDBObjectStore or IDBIndex)
// * source of IDBRequest (IDBObjectStore, IDBIndex, IDBCursor, or null)
// * result of IDBRequest (IDBDatabase, IDBCursor, undefined, integer,
// key, value, array of values or array of records)
//
// This allows for lazy conversion to script values (via IDBBindingUtilities),
// and avoids the need for many dedicated union types.
class MODULES_EXPORT IDBAny final : public GarbageCollected<IDBAny> {
public:
enum Type {
kUndefinedType = 0,
kNullType,
kIDBCursorType,
kIDBCursorWithValueType,
kIDBDatabaseType,
kIntegerType,
kKeyType,
kIDBValueType,
kIDBValueArrayType,
kIDBRecordArrayType,
};
explicit IDBAny(Type);
explicit IDBAny(IDBCursor*);
explicit IDBAny(IDBDatabase*);
explicit IDBAny(std::unique_ptr<IDBKey>);
explicit IDBAny(Vector<std::unique_ptr<IDBValue>>);
explicit IDBAny(std::unique_ptr<IDBValue>);
explicit IDBAny(int64_t);
explicit IDBAny(IDBRecordArray);
~IDBAny();
void Trace(Visitor*) const;
void ContextWillBeDestroyed();
Type GetType() const { return type_; }
// Use type() to figure out which one of these you're allowed to call.
IDBCursor* IdbCursor() const;
IDBCursorWithValue* IdbCursorWithValue() const;
IDBDatabase* IdbDatabase() const;
IDBValue* Value() const;
const Vector<std::unique_ptr<IDBValue>>& Values() const;
const IDBRecordArray& Records() const;
int64_t Integer() const;
const IDBKey* Key() const;
// IDBAny is a variant type used to hold the values produced by the |result|
// attribute of IDBRequest and (as a convenience) the |source| attribute of
// IDBRequest and IDBCursor.
// TODO(jsbell): Replace the use of IDBAny for |source| attributes (which are
// ScriptWrappable types) using unions per IDL.
v8::Local<v8::Value> ToV8(ScriptState* script_state);
private:
const Type type_;
// Only one of the following should ever be in use at any given time.
const Member<IDBCursor> idb_cursor_;
const Member<IDBDatabase> idb_database_;
const std::unique_ptr<IDBKey> idb_key_;
const std::unique_ptr<IDBValue> idb_value_;
const Vector<std::unique_ptr<IDBValue>> idb_values_;
std::optional<IDBRecordArray> idb_records_;
const int64_t integer_ = 0;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_INDEXEDDB_IDB_ANY_H_
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