CKComponentRootLayout CKComputeRootComponentLayout()

in ComponentKit/Core/CKComponentLayout.mm [70:104]

• 32 lines of code
• 4 McCabe index (conditional complexity)

CKComponentRootLayout CKComputeRootComponentLayout(id<CKMountable> rootComponent,
                                                   const CKSizeRange &sizeRange,
                                                   id<CKAnalyticsListener> analyticsListener,
                                                   CK::Optional<CKBuildTrigger> buildTrigger,
                                                   CKComponentScopeRoot *scopeRoot,
                                                   std::shared_ptr<RCLayoutCache> layoutCache)
{
  [analyticsListener willLayoutComponentTreeWithRootComponent:rootComponent buildTrigger:buildTrigger];
  CK::Component::LayoutSystraceContext systraceContext([analyticsListener systraceListener]);

  RCLayoutResult layoutResult;
  if (layoutCache) {
    layoutResult = RCComputeRootLayout(rootComponent, sizeRange, layoutCache);
  } else {
    layoutResult = {CKComputeComponentLayout(rootComponent, sizeRange, sizeRange.max), nil};
  }

  auto layoutLookup = CKComponentRootLayout::ComponentLayoutCache {};
  layoutResult.layout.enumerateLayouts([&](const auto &l){
    if ([l.component isKindOfClass:[CKComponent class]] && ((CKComponent *)l.component).controller) {
      layoutLookup[l.component] = l;
    }
  });
  const auto componentsByPredicate = buildComponentsByPredicateMap(layoutResult.layout, CKComponentAnimationPredicates());
  const auto rootLayout = CKComponentRootLayout {
    layoutResult,
    layoutLookup,
    componentsByPredicate,
  };

  CKDetectDuplicateComponent(rootLayout.layout());
  CKVerifyTreeNodesToParentLinks(scopeRoot, rootLayout.layout());
  [analyticsListener didLayoutComponentTreeWithRootComponent:rootComponent];
  return rootLayout;
}