/* * Copyright (c) Meta Platforms, Inc. and 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" #include namespace facebook::react { ComponentBuilder::ComponentBuilder( ComponentDescriptorRegistry::Shared componentDescriptorRegistry) : componentDescriptorRegistry_(std::move(componentDescriptorRegistry)){}; ShadowNode::Unshared ComponentBuilder::build( const ElementFragment& elementFragment) const { auto& componentDescriptor = componentDescriptorRegistry_->at(elementFragment.componentHandle); auto children = ShadowNode::ListOfShared{}; children.reserve(elementFragment.children.size()); for (const auto& childFragment : elementFragment.children) { children.push_back(build(childFragment)); } auto family = componentDescriptor.createFamily(ShadowNodeFamilyFragment{ elementFragment.tag, elementFragment.surfaceId, nullptr}); auto initialState = componentDescriptor.createInitialState(elementFragment.props, family); auto constShadowNode = componentDescriptor.createShadowNode( ShadowNodeFragment{ elementFragment.props, std::make_shared(children), initialState}, family); if (elementFragment.stateCallback) { auto newState = componentDescriptor.createState( *family, elementFragment.stateCallback(initialState)); constShadowNode = componentDescriptor.cloneShadowNode( *constShadowNode, ShadowNodeFragment{ ShadowNodeFragment::propsPlaceholder(), ShadowNodeFragment::childrenPlaceholder(), newState}); } auto shadowNode = std::const_pointer_cast(constShadowNode); if (elementFragment.referenceCallback) { elementFragment.referenceCallback(shadowNode); } if (elementFragment.finalizeCallback) { elementFragment.finalizeCallback(*shadowNode); } return shadowNode; } } // namespace facebook::react