mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
0f4f917663
Reviewed By: igorsugak Differential Revision: D25861683 fbshipit-source-id: 616afca13ae64c76421053ce49286035e0687e36
79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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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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*/
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#pragma once
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#include <better/map.h>
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#include <better/small_vector.h>
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#include <react/renderer/core/Props.h>
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#include <react/renderer/core/RawProps.h>
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#include <react/renderer/core/RawPropsKey.h>
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#include <react/renderer/core/RawPropsKeyMap.h>
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#include <react/renderer/core/RawPropsPrimitives.h>
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#include <react/renderer/core/RawValue.h>
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namespace facebook {
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namespace react {
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/*
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* Specialized (to a particular type of Props) parser that provides the most
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* efficient access to `RawProps` content.
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*/
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class RawPropsParser final {
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public:
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/*
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* Default constructor.
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* To be used by `ConcreteComponentDescriptor` only.
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*/
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RawPropsParser() = default;
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/*
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* To be used by `ConcreteComponentDescriptor` only.
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*/
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template <typename PropsT>
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void prepare() noexcept {
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static_assert(
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std::is_base_of<Props, PropsT>::value,
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"PropsT must be a descendant of Props");
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RawProps emptyRawProps{};
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emptyRawProps.parse(*this);
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PropsT({}, emptyRawProps);
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postPrepare();
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}
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private:
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friend class ComponentDescriptor;
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template <class ShadowNodeT>
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friend class ConcreteComponentDescriptor;
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friend class RawProps;
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/*
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* To be used by `RawProps` only.
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*/
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void preparse(RawProps const &rawProps) const noexcept;
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/*
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* Non-generic part of `prepare`.
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*/
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void postPrepare() noexcept;
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/*
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* To be used by `RawProps` only.
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*/
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RawValue const *at(RawProps const &rawProps, RawPropsKey const &key)
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const noexcept;
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mutable better::small_vector<RawPropsKey, kNumberOfPropsPerComponentSoftCap>
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keys_{};
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mutable RawPropsKeyMap nameToIndex_{};
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mutable int size_{0};
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mutable bool ready_{false};
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};
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} // namespace react
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} // namespace facebook
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