88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the MIT license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <react/mounting/MountingTelemetry.h>
|
||
|
|
#include <react/mounting/ShadowViewMutation.h>
|
||
|
|
|
||
|
|
namespace facebook {
|
||
|
|
namespace react {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Encapsulates all artifacts of `ShadowTree` commit (or a series of them),
|
||
|
|
* particularly list of mutations and meta-data associated with the commit.
|
||
|
|
* Movable and copyable, but moving is strongly encouraged.
|
||
|
|
* Beware: A moved-from object of this type has unspecified value and accessing
|
||
|
|
* that is UB.
|
||
|
|
*/
|
||
|
|
class MountingTransaction final {
|
||
|
|
public:
|
||
|
|
/*
|
||
|
|
* A Number (or revision) grows continuously starting from `1`. Value `0`
|
||
|
|
* represents the state before the very first transaction happens.
|
||
|
|
*/
|
||
|
|
using Number = int64_t;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copying a list of `ShadowViewMutation` is expensive, so the constructor
|
||
|
|
* accepts it as rvalue reference to discourage copying.
|
||
|
|
*/
|
||
|
|
MountingTransaction(
|
||
|
|
SurfaceId surfaceId,
|
||
|
|
Number number,
|
||
|
|
ShadowViewMutationList &&mutations,
|
||
|
|
MountingTelemetry telemetry);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copy semantic.
|
||
|
|
* Copying of MountingTransaction is expensive, so copy-constructor is
|
||
|
|
* explicit and copy-assignment is deleted to prevent accidental copying.
|
||
|
|
*/
|
||
|
|
explicit MountingTransaction(const MountingTransaction &mountingTransaction) =
|
||
|
|
default;
|
||
|
|
MountingTransaction &operator=(const MountingTransaction &other) = delete;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Move semantic.
|
||
|
|
*/
|
||
|
|
MountingTransaction(MountingTransaction &&mountingTransaction) noexcept =
|
||
|
|
default;
|
||
|
|
MountingTransaction &operator=(MountingTransaction &&other) = default;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Returns a list of mutations that represent the transaction. The list can be
|
||
|
|
* empty (theoretically).
|
||
|
|
*/
|
||
|
|
ShadowViewMutationList const &getMutations() const &;
|
||
|
|
ShadowViewMutationList getMutations() &&;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Returns telemetry associated with this transaction.
|
||
|
|
*/
|
||
|
|
MountingTelemetry const &getTelemetry() const;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Returns the id of the surface that the transaction belongs to.
|
||
|
|
*/
|
||
|
|
SurfaceId getSurfaceId() const;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Returns a sequential number of the particular transaction.
|
||
|
|
*/
|
||
|
|
Number getNumber() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
SurfaceId surfaceId_;
|
||
|
|
Number number_;
|
||
|
|
ShadowViewMutationList mutations_;
|
||
|
|
MountingTelemetry telemetry_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace react
|
||
|
|
} // namespace facebook
|