Use computed variables when possible

Source/Classes/Animator.swift

@@ -51,11 +51,10 @@ public class Animator {
     }
   }
 
-
   /// Prepares the animator instance for animation.
   ///
-  /// - parameter imageName:   The file name of the GIF in the main bundle.
+  /// - parameter imageName: The file name of the GIF in the main bundle.
-  /// - parameter size:        The target size of the individual frames.
+  /// - parameter size: The target size of the individual frames.
   /// - parameter contentMode: The view content mode to use for the individual frames.
   func prepareForAnimation(withGIFNamed imageName: String, size: CGSize, contentMode: UIViewContentMode) {
     guard let extensionRemoved = imageName.components(separatedBy: ".")[safe: 0],
@@ -67,8 +66,8 @@ public class Animator {
 
   /// Prepares the animator instance for animation.
   ///
-  /// - parameter imageData:   GIF image data.
+  /// - parameter imageData: GIF image data.
-  /// - parameter size:        The target size of the individual frames.
+  /// - parameter size: The target size of the individual frames.
   /// - parameter contentMode: The view content mode to use for the individual frames.
   func prepareForAnimation(withGIFData imageData: Data, size: CGSize, contentMode: UIViewContentMode) {
     frameStore = FrameStore(data: imageData, size: size, contentMode: contentMode, framePreloadCount: frameBufferCount)
@@ -103,8 +102,8 @@ public class Animator {
 
   /// Prepare for animation and start animating immediately.
   ///
-  /// - parameter imageName:   The file name of the GIF in the main bundle.
+  /// - parameter imageName: The file name of the GIF in the main bundle.
-  /// - parameter size:        The target size of the individual frames.
+  /// - parameter size: The target size of the individual frames.
   /// - parameter contentMode: The view content mode to use for the individual frames.
   func animate(withGIFNamed imageName: String, size: CGSize, contentMode: UIViewContentMode) {
     prepareForAnimation(withGIFNamed: imageName, size: size, contentMode: contentMode)
@@ -113,11 +112,11 @@ public class Animator {
 
   /// Prepare for animation and start animating immediately.
   ///
-  /// - parameter imageData:   GIF image data.
+  /// - parameter imageData: GIF image data.
-  /// - parameter size:        The target size of the individual frames.
+  /// - parameter size: The target size of the individual frames.
   /// - parameter contentMode: The view content mode to use for the individual frames.
-  func animate(withGIFData data: Data, size: CGSize, contentMode: UIViewContentMode) {
+  func animate(withGIFData imageData: Data, size: CGSize, contentMode: UIViewContentMode) {
-    prepareForAnimation(withGIFData: data, size: size, contentMode: contentMode)
+    prepareForAnimation(withGIFData: imageData, size: size, contentMode: contentMode)
     startAnimating()
   }
 

Source/Classes/GIFAnimatable.swift

@@ -23,11 +23,14 @@ extension GIFAnimatable {
     return image?.size ?? CGSize.zero
   }
 
-  /// Prepare for animation and start animating immediately.
+  /// Returns the active frame if available.
-  ///
+  public var activeFrame: UIImage? {
-  /// - parameter imageName:   The file name of the GIF in the main bundle.
+    return animator?.activeFrame()
-  public func animate(withGIFNamed imageName: String) {
+  }
-    animator?.animate(withGIFNamed: imageName, size: frame.size, contentMode: contentMode)
+
+  /// Total frame count of the GIF.
+  public var frameCount: Int {
+    return animator?.frameCount ?? 0
   }
 
   /// Introspect whether the instance is animating.
@@ -35,6 +38,20 @@ extension GIFAnimatable {
     return animator?.isAnimating ?? false
   }
 
+  /// Prepare for animation and start animating immediately.
+  ///
+  /// - parameter imageName: The file name of the GIF in the main bundle.
+  public func animate(withGIFNamed imageName: String) {
+    animator?.animate(withGIFNamed: imageName, size: frame.size, contentMode: contentMode)
+  }
+
+  /// Prepare for animation and start animating immediately.
+  ///
+  /// - parameter imageData: GIF image data.
+  public func animate(withGIFData imageData: Data) {
+    animator?.animate(withGIFData: imageData, size: frame.size, contentMode: contentMode)
+  }
+
   /// Prepares the animator instance for animation.
   ///
   /// - parameter imageName: The file name of the GIF in the main bundle.
@@ -50,10 +67,6 @@ extension GIFAnimatable {
     animator?.prepareForAnimation(withGIFData: imageData, size: frame.size, contentMode: contentMode)
   }
 
-  /// Total frame count of the GIF.
-  public var frameCount: Int {
-    return animator?.frameCount ?? 0
-  }
 
   /// Stop animating and free up GIF data from memory.
   public func prepareForReuse() {
@@ -74,16 +87,11 @@ extension GIFAnimatable {
   public func updateImageIfNeeded() {
     image = animator?.activeFrame() ?? image
   }
-
-  /// Returns the active frame if available.
-  public func activeFrame() -> UIImage? {
-    return animator?.activeFrame()
-  }
 }
 
 extension GIFAnimatable {
   /// Calls setNeedsDisplay on the layer whenever the animator has a new frame. Should *not* be called directly.
-  public func animatorHasNewFrame() {
+  func animatorHasNewFrame() {
     layer.setNeedsDisplay()
   }
 }