48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and 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 <jsi/jsi.h>
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#include <react/bridging/Base.h>
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#include <react/renderer/core/ShadowNode.h>
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namespace facebook::react {
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template <>
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struct Bridging<std::shared_ptr<const ShadowNode>> {
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static std::shared_ptr<const ShadowNode> fromJs(jsi::Runtime &rt, const jsi::Value &jsiValue)
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{
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auto object = jsiValue.asObject(rt);
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// Using `jsi::NativeState` instead of `ShadowNodeWrapper` to avoid doing a
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// dynamic pointer cast twice (as we're calling `hasNativeState` and then
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// `getNativeState`). When we use `NativeState`, JSI doesn't need to do any
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// dynamic casts and we can do a single one on our own after the checks.
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if (!object.hasNativeState<jsi::NativeState>(rt)) {
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throw jsi::JSINativeException("Value is not a ShadowNode reference");
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}
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auto nativeState = object.getNativeState<jsi::NativeState>(rt);
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auto shadowNodeWrapper = std::dynamic_pointer_cast<ShadowNodeWrapper>(nativeState);
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if (shadowNodeWrapper == nullptr || shadowNodeWrapper->shadowNode == nullptr) {
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throw jsi::JSINativeException("Value state is nullptr, expected a ShadowNode reference");
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}
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return shadowNodeWrapper->shadowNode;
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}
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static jsi::Value toJs(jsi::Runtime &rt, const std::shared_ptr<const ShadowNode> &value)
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{
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jsi::Object obj(rt);
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obj.setNativeState(rt, std::make_shared<ShadowNodeWrapper>(value));
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return obj;
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}
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};
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} // namespace facebook::react
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