returned legacy setSource API with @_spi.

cb114b51e228774670d8f63da27e05ad364c53ca

client/ios/DivKit/Views/DivBlockProvider.swift

@@ -71,6 +71,23 @@ final class DivBlockProvider {
       .dispose(in: disposePool)
   }
 
+  func setSource(
+    _ source: DivViewSource,
+    debugParams: DebugParams
+  ) {
+    id = source.id
+    self.debugParams = debugParams
+
+    switch source.kind {
+    case let .data(data):
+      update(data: data)
+    case let .divData(divData):
+      update(divData: divData)
+    case let .json(json):
+      update(json: json)
+    }
+  }
+
   func setSource(
     _ source: DivViewSource,
     debugParams: DebugParams
@@ -88,6 +105,22 @@ final class DivBlockProvider {
     }
   }
 
+  private func update(data: Data) {
+    dataErrors = []
+    do {
+      guard let jsonObj = try? JSONSerialization.jsonObject(with: data),
+            let jsonDict = jsonObj as? [String: Any] else {
+        throw DeserializationError.nestedObjectError(
+          field: cardId.rawValue,
+          error: .invalidJSONData(data: data)
+        )
+      }
+      update(json: jsonDict)
+    } catch {
+      block = handleError(error: error)
+    }
+  }
+
   private func update(data: Data) async {
     dataErrors = []
 
@@ -110,6 +143,17 @@ final class DivBlockProvider {
     }
   }
 
+  private func update(json: [String: Any]) {
+    dataErrors = []
+    do {
+      let result = try parseDivDataWithTemplates(json, cardId: cardId)
+      dataErrors.append(contentsOf: result.errorsOrWarnings?.asArray() ?? [])
+      update(divData: result.value)
+    } catch {
+      block = handleError(error: error)
+    }
+  }
+
   private func update(json: [String: Any]) async {
     dataErrors = []
     do {
@@ -209,6 +253,21 @@ final class DivBlockProvider {
     }
   }
 
+  private func parseDivDataWithTemplates(
+    _ jsonDict: [String: Any],
+    cardId: DivCardID
+  ) throws -> DeserializationResult<DivData> {
+    let rawDivData = try RawDivData(dictionary: jsonDict)
+    let templates = try measurements.templateParsingTime.updateMeasure {
+      DivTemplates(dictionary: rawDivData.templates)
+    }
+    return try measurements.divDataParsingTime.updateMeasure {
+      templates
+        .parseValue(type: DivDataTemplate.self, from: rawDivData.card)
+        .asCardResult(cardId: cardId)
+    }
+  }
+
   private func parseDivDataWithTemplates(
     _ jsonDict: [String: Any],
     cardId: DivCardID

client/ios/DivKit/Views/DivView.swift

@@ -67,6 +67,29 @@ public final class DivView: VisibleBoundsTrackingView {
     await preloader.setSource(source, debugParams: debugParams)
   }
 
+  /// Sets the source of the ``DivView`` and updates the layout.
+  /// - Parameters:
+  /// - source: The source of the ``DivView``, specified using `JSON` data, a `Data` object, or
+  /// ``DivData``.
+  /// - debugParams: Optional debug configurations for the ``DivView``.
+  /// - shouldResetPreviousCardData: Specifies whether to clear the data of the previous card when
+  /// updating the ``DivView`` with new content.
+  @_spi(Legacy)
+  public func setSource(
+    _ source: DivViewSource,
+    debugParams: DebugParams = DebugParams(),
+    shouldResetPreviousCardData: Bool = false
+  ) {
+    if shouldResetPreviousCardData, let blockProvider {
+      divKitComponents.reset(cardId: blockProvider.cardId)
+    }
+    blockProvider = preloader.blockProvider(for: source.id.cardId)
+    blockSubscription = blockProvider?.$block.currentAndNewValues.addObserver { [weak self] in
+      self?.update(block: $0)
+    }
+    preloader.setSource(source, debugParams: debugParams)
+  }
+
   /// Sets the source of the ``DivView`` and updates the layout.
   /// - Parameters:
   /// - cardId: ID of the card to show. (The card will not be shown if it has not been previously

client/ios/DivKit/Views/DivViewPreloader.swift

@@ -59,6 +59,25 @@ public final class DivViewPreloader {
     blockProviders[source.id.cardId] = blockProvider
   }
 
+  /// Sets the source for  ``DivViewPreloader`` and updates the layout.
+  /// - Parameters:
+  /// - source: The source of the ``DivView``.
+  /// - debugParams: Optional debug configurations for the ``DivView``.
+  @_spi(Legacy)
+  public func setSource(
+    _ source: DivViewSource,
+    debugParams: DebugParams = DebugParams()
+  ) {
+    let blockProvider: DivBlockProvider = blockProvider(for: source.id.cardId)
+
+    blockProvider.setSource(
+      source,
+      debugParams: debugParams
+    )
+
+    blockProviders[source.id.cardId] = blockProvider
+  }
+
   /// Sets the sources for  ``DivViewPreloader`` and updates the layout.
   /// - Parameters:
   /// - sources: The sources of the ``DivView``.