GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/element/ComponentBuilder.cpp

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2021-08-16 00:14:59 +00:00
/*
* 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.
*/
#include "ComponentBuilder.h"
namespace facebook {
namespace react {
ComponentBuilder::ComponentBuilder(
ComponentDescriptorRegistry::Shared const &componentDescriptorRegistry)
: componentDescriptorRegistry_(componentDescriptorRegistry){};
ShadowNode::Unshared ComponentBuilder::build(
ElementFragment const &elementFragment) const {
auto &componentDescriptor =
componentDescriptorRegistry_->at(elementFragment.componentHandle);
auto children = ShadowNode::ListOfShared{};
children.reserve(elementFragment.children.size());
for (auto const &childFragment : elementFragment.children) {
children.push_back(build(childFragment));
}
auto family = componentDescriptor.createFamily(
ShadowNodeFamilyFragment{
elementFragment.tag, elementFragment.surfaceId, nullptr},
nullptr);
auto state = elementFragment.state
? elementFragment.state
: componentDescriptor.createInitialState(
ShadowNodeFragment{elementFragment.props}, family);
auto constShadowNode = componentDescriptor.createShadowNode(
ShadowNodeFragment{
elementFragment.props,
std::make_shared<ShadowNode::ListOfShared const>(children),
state},
family);
auto shadowNode = std::const_pointer_cast<ShadowNode>(constShadowNode);
if (elementFragment.referenceCallback) {
elementFragment.referenceCallback(shadowNode);
}
if (elementFragment.finalizeCallback) {
elementFragment.finalizeCallback(*shadowNode);
}
return shadowNode;
}
} // namespace react
} // namespace facebook