mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
56501dcc47
Summary: I am not sure why it compiled before, it clearly should not, IMO. The `const` types (and references!) are not allowed inside `std::vector` because they are not assignable. Some experiments that I did caused compilation errors here, so I am changing that to be actually correct. Reviewed By: JoshuaGross Differential Revision: D14249199 fbshipit-source-id: 07a22ef13f5de9dfc7ab307493419e6006994bc2
85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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// This source code is licensed under the MIT license found in the
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// LICENSE file in the root directory of this source tree.
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#pragma once
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#include <folly/Hash.h>
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#include <react/core/EventEmitter.h>
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#include <react/core/LayoutMetrics.h>
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#include <react/core/LocalData.h>
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#include <react/core/Props.h>
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#include <react/core/ReactPrimitives.h>
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#include <react/core/ShadowNode.h>
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namespace facebook {
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namespace react {
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/*
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* Describes a view that can be mounted.
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*/
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struct ShadowView final {
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ShadowView() = default;
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ShadowView(const ShadowView &shadowView) = default;
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~ShadowView(){};
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/*
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* Constructs a `ShadowView` from given `ShadowNode`.
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*/
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explicit ShadowView(const ShadowNode &shadowNode);
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ShadowView &operator=(const ShadowView &other) = default;
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bool operator==(const ShadowView &rhs) const;
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bool operator!=(const ShadowView &rhs) const;
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ComponentName componentName = "";
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ComponentHandle componentHandle = 0;
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Tag tag = -1; // Tag does not change during the lifetime of a shadow view.
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SharedProps props = {};
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SharedEventEmitter eventEmitter = {};
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LayoutMetrics layoutMetrics = EmptyLayoutMetrics;
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SharedLocalData localData = {};
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State::Shared state = {};
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};
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/*
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* Describes pair of a `ShadowView` and a `ShadowNode`.
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*/
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struct ShadowViewNodePair final {
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ShadowView shadowView;
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ShadowNode const *shadowNode;
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/*
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* The stored pointer to `ShadowNode` represents an indentity of the pair.
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*/
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bool operator==(const ShadowViewNodePair &rhs) const;
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bool operator!=(const ShadowViewNodePair &rhs) const;
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};
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using ShadowViewNodePairList = std::vector<ShadowViewNodePair>;
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} // namespace react
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} // namespace facebook
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namespace std {
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template <>
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struct hash<facebook::react::ShadowView> {
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size_t operator()(const facebook::react::ShadowView &shadowView) const {
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auto seed = size_t{0};
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folly::hash::hash_combine(
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seed,
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shadowView.componentHandle,
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shadowView.tag,
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shadowView.props,
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shadowView.eventEmitter,
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shadowView.localData);
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return seed;
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}
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};
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} // namespace std
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