divkit/client/ios/DivKit/generated_sources/DivChangeSetTransitionTemplate.swift

// Generated code. Do not modify.

import Foundation
import Serialization
import VGSL

public final class DivChangeSetTransitionTemplate: TemplateValue, Sendable {
  public static let type: String = "set"
  public let parent: String?
  public let items: Field<[DivChangeTransitionTemplate]>? // at least 1 elements

  public convenience init(dictionary: [String: Any], templateToType: [TemplateName: String]) throws {
    self.init(
      parent: dictionary["type"] as? String,
      items: dictionary.getOptionalArray("items", templateToType: templateToType)
    )
  }

  init(
    parent: String?,
    items: Field<[DivChangeTransitionTemplate]>? = nil
  ) {
    self.parent = parent
    self.items = items
  }

  private static func resolveOnlyLinks(context: TemplatesContext, parent: DivChangeSetTransitionTemplate?) -> DeserializationResult<DivChangeSetTransition> {
    let itemsValue = { parent?.items?.resolveValue(context: context, validator: ResolvedValue.itemsValidator, useOnlyLinks: true) ?? .noValue }()
    var errors = mergeErrors(
      itemsValue.errorsOrWarnings?.map { .nestedObjectError(field: "items", error: $0) }
    )
    if case .noValue = itemsValue {
      errors.append(.requiredFieldIsMissing(field: "items"))
    }
    guard
      let itemsNonNil = itemsValue.value
    else {
      return .failure(NonEmptyArray(errors)!)
    }
    let result = DivChangeSetTransition(
      items: { itemsNonNil }()
    )
    return errors.isEmpty ? .success(result) : .partialSuccess(result, warnings: NonEmptyArray(errors)!)
  }

  public static func resolveValue(context: TemplatesContext, parent: DivChangeSetTransitionTemplate?, useOnlyLinks: Bool) -> DeserializationResult<DivChangeSetTransition> {
    if useOnlyLinks {
      return resolveOnlyLinks(context: context, parent: parent)
    }
    var itemsValue: DeserializationResult<[DivChangeTransition]> = .noValue
    _ = {
      // Each field is parsed in its own lambda to keep the stack size managable
      // Otherwise the compiler will allocate stack for each intermediate variable
      // upfront even when we don't actually visit a relevant branch
      for (key, __dictValue) in context.templateData {
        _ = {
          if key == "items" {
           itemsValue = deserialize(__dictValue, templates: context.templates, templateToType: context.templateToType, validator: ResolvedValue.itemsValidator, type: DivChangeTransitionTemplate.self).merged(with: itemsValue)
          }
        }()
        _ = {
         if key == parent?.items?.link {
           itemsValue = itemsValue.merged(with: { deserialize(__dictValue, templates: context.templates, templateToType: context.templateToType, validator: ResolvedValue.itemsValidator, type: DivChangeTransitionTemplate.self) })
          }
        }()
      }
    }()
    if let parent = parent {
      _ = { itemsValue = itemsValue.merged(with: { parent.items?.resolveValue(context: context, validator: ResolvedValue.itemsValidator, useOnlyLinks: true) }) }()
    }
    var errors = mergeErrors(
      itemsValue.errorsOrWarnings?.map { .nestedObjectError(field: "items", error: $0) }
    )
    if case .noValue = itemsValue {
      errors.append(.requiredFieldIsMissing(field: "items"))
    }
    guard
      let itemsNonNil = itemsValue.value
    else {
      return .failure(NonEmptyArray(errors)!)
    }
    let result = DivChangeSetTransition(
      items: { itemsNonNil }()
    )
    return errors.isEmpty ? .success(result) : .partialSuccess(result, warnings: NonEmptyArray(errors)!)
  }

  private func mergedWithParent(templates: [TemplateName: Any]) throws -> DivChangeSetTransitionTemplate {
    guard let parent = parent, parent != Self.type else { return self }
    guard let parentTemplate = templates[parent] as? DivChangeSetTransitionTemplate else {
      throw DeserializationError.unknownType(type: parent)
    }
    let mergedParent = try parentTemplate.mergedWithParent(templates: templates)

    return DivChangeSetTransitionTemplate(
      parent: nil,
      items: items ?? mergedParent.items
    )
  }

  public func resolveParent(templates: [TemplateName: Any]) throws -> DivChangeSetTransitionTemplate {
    let merged = try mergedWithParent(templates: templates)

    return DivChangeSetTransitionTemplate(
      parent: nil,
      items: try merged.items?.resolveParent(templates: templates)
    )
  }
}