From 234107de088c91bf6f879db773a1d6473a8bd84c Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Sat, 1 Jul 2017 14:56:21 +0200
Subject: [PATCH] Sealed some classes and made some classes internal.

---
 src/ImageSharp/Common/Exceptions/ImageFormatException.cs     | 2 +-
 src/ImageSharp/Common/Exceptions/ImageProcessingException.cs | 2 +-
 src/ImageSharp/Formats/Bmp/BmpConfigurationModule.cs         | 2 +-
 src/ImageSharp/Formats/Bmp/BmpDecoder.cs                     | 2 +-
 src/ImageSharp/Formats/Bmp/BmpEncoder.cs                     | 2 +-
 src/ImageSharp/Formats/Bmp/BmpFileHeader.cs                  | 2 +-
 src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs                  | 2 +-
 src/ImageSharp/Formats/Gif/GifConfigurationModule.cs         | 2 +-
 src/ImageSharp/Formats/Gif/GifDecoder.cs                     | 2 +-
 src/ImageSharp/Formats/Gif/GifDecoderCore.cs                 | 2 +-
 src/ImageSharp/Formats/Gif/GifEncoder.cs                     | 2 +-
 src/ImageSharp/Formats/Jpeg/JpegConfigurationModule.cs       | 2 +-
 src/ImageSharp/Formats/Jpeg/JpegDecoder.cs                   | 2 +-
 src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs               | 2 +-
 src/ImageSharp/Formats/Jpeg/JpegEncoder.cs                   | 2 +-
 src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs               | 2 +-
 src/ImageSharp/Formats/Png/PngConfigurationModule.cs         | 2 +-
 src/ImageSharp/Formats/Png/PngDecoder.cs                     | 2 +-
 src/ImageSharp/Formats/Png/PngDecoderCore.cs                 | 2 +-
 src/ImageSharp/Formats/Png/PngEncoder.cs                     | 2 +-
 src/ImageSharp/Formats/Png/PngHeader.cs                      | 2 +-
 src/ImageSharp/Formats/Png/PngInterlaceMode.cs               | 2 +-
 src/ImageSharp/Formats/Png/Zlib/IChecksum.cs                 | 2 +-
 src/ImageSharp/Formats/Png/Zlib/ZlibInflateStream.cs         | 2 +-
 24 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/src/ImageSharp/Common/Exceptions/ImageFormatException.cs b/src/ImageSharp/Common/Exceptions/ImageFormatException.cs
index 70491ba22..32a085435 100644
--- a/src/ImageSharp/Common/Exceptions/ImageFormatException.cs
+++ b/src/ImageSharp/Common/Exceptions/ImageFormatException.cs
@@ -11,7 +11,7 @@ namespace ImageSharp
     /// The exception that is thrown when the library tries to load
     /// an image, which has an invalid format.
     /// </summary>
-    public class ImageFormatException : Exception
+    public sealed class ImageFormatException : Exception
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="ImageFormatException"/> class.
diff --git a/src/ImageSharp/Common/Exceptions/ImageProcessingException.cs b/src/ImageSharp/Common/Exceptions/ImageProcessingException.cs
index a59be9ca8..ef84a1e39 100644
--- a/src/ImageSharp/Common/Exceptions/ImageProcessingException.cs
+++ b/src/ImageSharp/Common/Exceptions/ImageProcessingException.cs
@@ -10,7 +10,7 @@ namespace ImageSharp
     /// <summary>
     /// The exception that is thrown when an error occurs when applying a process to an image.
     /// </summary>
-    public class ImageProcessingException : Exception
+    public sealed class ImageProcessingException : Exception
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="ImageProcessingException"/> class.
diff --git a/src/ImageSharp/Formats/Bmp/BmpConfigurationModule.cs b/src/ImageSharp/Formats/Bmp/BmpConfigurationModule.cs
index 4534f2636..f70ff1a56 100644
--- a/src/ImageSharp/Formats/Bmp/BmpConfigurationModule.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpConfigurationModule.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Registers the image encoders, decoders and mime type detectors for the bmp format.
     /// </summary>
-    public class BmpConfigurationModule : IConfigurationModule
+    public sealed class BmpConfigurationModule : IConfigurationModule
     {
         /// <inheritdoc/>
         public void Configure(Configuration config)
diff --git a/src/ImageSharp/Formats/Bmp/BmpDecoder.cs b/src/ImageSharp/Formats/Bmp/BmpDecoder.cs
index 66af2fa75..5baf1b1a5 100644
--- a/src/ImageSharp/Formats/Bmp/BmpDecoder.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpDecoder.cs
@@ -26,7 +26,7 @@ namespace ImageSharp.Formats
     /// Formats will be supported in a later releases. We advise always
     /// to use only 24 Bit Windows bitmaps.
     /// </remarks>
-    public class BmpDecoder : IImageDecoder, IBmpDecoderOptions
+    public sealed class BmpDecoder : IImageDecoder, IBmpDecoderOptions
     {
         /// <inheritdoc/>
         public Image<TPixel> Decode<TPixel>(Configuration configuration, Stream stream)
diff --git a/src/ImageSharp/Formats/Bmp/BmpEncoder.cs b/src/ImageSharp/Formats/Bmp/BmpEncoder.cs
index b0064a508..dfba0b41c 100644
--- a/src/ImageSharp/Formats/Bmp/BmpEncoder.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpEncoder.cs
@@ -15,7 +15,7 @@ namespace ImageSharp.Formats
     /// Image encoder for writing an image to a stream as a Windows bitmap.
     /// </summary>
     /// <remarks>The encoder can currently only write 24-bit rgb images to streams.</remarks>
-    public class BmpEncoder : IImageEncoder, IBmpEncoderOptions
+    public sealed class BmpEncoder : IImageEncoder, IBmpEncoderOptions
     {
         /// <summary>
         /// Gets or sets the number of bits per pixel.
diff --git a/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs b/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
index 4be602f4b..f9b20a48f 100644
--- a/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
@@ -15,7 +15,7 @@ namespace ImageSharp.Formats
     /// All of the other integer values are stored in little-endian format
     /// (i.e. least-significant byte first).
     /// </remarks>
-    internal class BmpFileHeader
+    internal sealed class BmpFileHeader
     {
         /// <summary>
         /// Defines of the data structure in the bitmap file.
diff --git a/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs b/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
index e652cb504..dc6a489d3 100644
--- a/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
@@ -10,7 +10,7 @@ namespace ImageSharp.Formats
     /// the screen.
     /// <see href="https://en.wikipedia.org/wiki/BMP_file_format"/>
     /// </summary>
-    internal class BmpInfoHeader
+    internal sealed class BmpInfoHeader
     {
         /// <summary>
         /// Defines of the data structure in the bitmap file.
diff --git a/src/ImageSharp/Formats/Gif/GifConfigurationModule.cs b/src/ImageSharp/Formats/Gif/GifConfigurationModule.cs
index 4e810ffad..ee134d66c 100644
--- a/src/ImageSharp/Formats/Gif/GifConfigurationModule.cs
+++ b/src/ImageSharp/Formats/Gif/GifConfigurationModule.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Registers the image encoders, decoders and mime type detectors for the gif format.
     /// </summary>
-    public class GifConfigurationModule : IConfigurationModule
+    public sealed class GifConfigurationModule : IConfigurationModule
     {
         /// <inheritdoc/>
         public void Configure(Configuration config)
diff --git a/src/ImageSharp/Formats/Gif/GifDecoder.cs b/src/ImageSharp/Formats/Gif/GifDecoder.cs
index e026cc29b..927289094 100644
--- a/src/ImageSharp/Formats/Gif/GifDecoder.cs
+++ b/src/ImageSharp/Formats/Gif/GifDecoder.cs
@@ -14,7 +14,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Decoder for generating an image out of a gif encoded stream.
     /// </summary>
-    public class GifDecoder : IImageDecoder, IGifDecoderOptions
+    public sealed class GifDecoder : IImageDecoder, IGifDecoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being decoded.
diff --git a/src/ImageSharp/Formats/Gif/GifDecoderCore.cs b/src/ImageSharp/Formats/Gif/GifDecoderCore.cs
index 22e5e475b..bb230beac 100644
--- a/src/ImageSharp/Formats/Gif/GifDecoderCore.cs
+++ b/src/ImageSharp/Formats/Gif/GifDecoderCore.cs
@@ -18,7 +18,7 @@ namespace ImageSharp.Formats
     /// Performs the gif decoding operation.
     /// </summary>
     /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class GifDecoderCore<TPixel>
+    internal sealed class GifDecoderCore<TPixel>
         where TPixel : struct, IPixel<TPixel>
     {
         /// <summary>
diff --git a/src/ImageSharp/Formats/Gif/GifEncoder.cs b/src/ImageSharp/Formats/Gif/GifEncoder.cs
index b725f1260..b48db5635 100644
--- a/src/ImageSharp/Formats/Gif/GifEncoder.cs
+++ b/src/ImageSharp/Formats/Gif/GifEncoder.cs
@@ -15,7 +15,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Image encoder for writing image data to a stream in gif format.
     /// </summary>
-    public class GifEncoder : IImageEncoder, IGifEncoderOptions
+    public sealed class GifEncoder : IImageEncoder, IGifEncoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being encoded.
diff --git a/src/ImageSharp/Formats/Jpeg/JpegConfigurationModule.cs b/src/ImageSharp/Formats/Jpeg/JpegConfigurationModule.cs
index 8fe4a35a0..bb8c4e83f 100644
--- a/src/ImageSharp/Formats/Jpeg/JpegConfigurationModule.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegConfigurationModule.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Registers the image encoders, decoders and mime type detectors for the jpeg format.
     /// </summary>
-    public class JpegConfigurationModule : IConfigurationModule
+    public sealed class JpegConfigurationModule : IConfigurationModule
     {
         /// <inheritdoc/>
         public void Configure(Configuration config)
diff --git a/src/ImageSharp/Formats/Jpeg/JpegDecoder.cs b/src/ImageSharp/Formats/Jpeg/JpegDecoder.cs
index 0dc186697..b3caddeca 100644
--- a/src/ImageSharp/Formats/Jpeg/JpegDecoder.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegDecoder.cs
@@ -14,7 +14,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Image decoder for generating an image out of a jpg stream.
     /// </summary>
-    public class JpegDecoder : IImageDecoder, IJpegDecoderOptions
+    public sealed class JpegDecoder : IImageDecoder, IJpegDecoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being decoded.
diff --git a/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs b/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs
index 1ce78a8b1..0ce927e51 100644
--- a/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs
@@ -18,7 +18,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Performs the jpeg decoding operation.
     /// </summary>
-    internal unsafe class JpegDecoderCore : IDisposable
+    internal sealed unsafe class JpegDecoderCore : IDisposable
     {
         /// <summary>
         /// The maximum number of color components
diff --git a/src/ImageSharp/Formats/Jpeg/JpegEncoder.cs b/src/ImageSharp/Formats/Jpeg/JpegEncoder.cs
index 350856471..6c6561468 100644
--- a/src/ImageSharp/Formats/Jpeg/JpegEncoder.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegEncoder.cs
@@ -14,7 +14,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Encoder for writing the data image to a stream in jpeg format.
     /// </summary>
-    public class JpegEncoder : IImageEncoder, IJpegEncoderOptions
+    public sealed class JpegEncoder : IImageEncoder, IJpegEncoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being decoded.
diff --git a/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs b/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs
index 2d67f6735..d2b7d2d7c 100644
--- a/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs
+++ b/src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs
@@ -17,7 +17,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Image encoder for writing an image to a stream as a jpeg.
     /// </summary>
-    internal unsafe class JpegEncoderCore
+    internal sealed unsafe class JpegEncoderCore
     {
         /// <summary>
         /// The number of quantization tables.
diff --git a/src/ImageSharp/Formats/Png/PngConfigurationModule.cs b/src/ImageSharp/Formats/Png/PngConfigurationModule.cs
index a3813c500..bb1c2086c 100644
--- a/src/ImageSharp/Formats/Png/PngConfigurationModule.cs
+++ b/src/ImageSharp/Formats/Png/PngConfigurationModule.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Registers the image encoders, decoders and mime type detectors for the png format.
     /// </summary>
-    public class PngConfigurationModule : IConfigurationModule
+    public sealed class PngConfigurationModule : IConfigurationModule
     {
         /// <inheritdoc/>
         public void Configure(Configuration host)
diff --git a/src/ImageSharp/Formats/Png/PngDecoder.cs b/src/ImageSharp/Formats/Png/PngDecoder.cs
index 2e177bc21..61a8cb212 100644
--- a/src/ImageSharp/Formats/Png/PngDecoder.cs
+++ b/src/ImageSharp/Formats/Png/PngDecoder.cs
@@ -31,7 +31,7 @@ namespace ImageSharp.Formats
     /// </list>
     /// </para>
     /// </remarks>
-    public class PngDecoder : IImageDecoder, IPngDecoderOptions
+    public sealed class PngDecoder : IImageDecoder, IPngDecoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being decoded.
diff --git a/src/ImageSharp/Formats/Png/PngDecoderCore.cs b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
index aef588f25..e6f19b915 100644
--- a/src/ImageSharp/Formats/Png/PngDecoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
@@ -20,7 +20,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Performs the png decoding operation.
     /// </summary>
-    internal class PngDecoderCore
+    internal sealed class PngDecoderCore
     {
         /// <summary>
         /// The dictionary of available color types.
diff --git a/src/ImageSharp/Formats/Png/PngEncoder.cs b/src/ImageSharp/Formats/Png/PngEncoder.cs
index f0d332fc4..bfd82a074 100644
--- a/src/ImageSharp/Formats/Png/PngEncoder.cs
+++ b/src/ImageSharp/Formats/Png/PngEncoder.cs
@@ -14,7 +14,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Image encoder for writing image data to a stream in png format.
     /// </summary>
-    public class PngEncoder : IImageEncoder, IPngEncoderOptions
+    public sealed class PngEncoder : IImageEncoder, IPngEncoderOptions
     {
         /// <summary>
         /// Gets or sets a value indicating whether the metadata should be ignored when the image is being encoded.
diff --git a/src/ImageSharp/Formats/Png/PngHeader.cs b/src/ImageSharp/Formats/Png/PngHeader.cs
index 50d6cc9ec..9cf823fa1 100644
--- a/src/ImageSharp/Formats/Png/PngHeader.cs
+++ b/src/ImageSharp/Formats/Png/PngHeader.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Represents the png header chunk.
     /// </summary>
-    public sealed class PngHeader
+    internal sealed class PngHeader
     {
         /// <summary>
         /// Gets or sets the dimension in x-direction of the image in pixels.
diff --git a/src/ImageSharp/Formats/Png/PngInterlaceMode.cs b/src/ImageSharp/Formats/Png/PngInterlaceMode.cs
index ec3b8ebe7..b43aff0b7 100644
--- a/src/ImageSharp/Formats/Png/PngInterlaceMode.cs
+++ b/src/ImageSharp/Formats/Png/PngInterlaceMode.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Formats
     /// <summary>
     /// Provides enumeration of available PNG interlace modes.
     /// </summary>
-    public enum PngInterlaceMode : byte
+    internal enum PngInterlaceMode : byte
     {
         /// <summary>
         /// Non interlaced
diff --git a/src/ImageSharp/Formats/Png/Zlib/IChecksum.cs b/src/ImageSharp/Formats/Png/Zlib/IChecksum.cs
index 935cdf953..cbd292dc4 100644
--- a/src/ImageSharp/Formats/Png/Zlib/IChecksum.cs
+++ b/src/ImageSharp/Formats/Png/Zlib/IChecksum.cs
@@ -12,7 +12,7 @@ namespace ImageSharp.Formats
     /// <code>Value</code>. The complete checksum object can also be reset
     /// so it can be used again with new data.
     /// </summary>
-    public interface IChecksum
+    internal interface IChecksum
     {
         /// <summary>
         /// Gets the data checksum computed so far.
diff --git a/src/ImageSharp/Formats/Png/Zlib/ZlibInflateStream.cs b/src/ImageSharp/Formats/Png/Zlib/ZlibInflateStream.cs
index 0743d8ded..136f919da 100644
--- a/src/ImageSharp/Formats/Png/Zlib/ZlibInflateStream.cs
+++ b/src/ImageSharp/Formats/Png/Zlib/ZlibInflateStream.cs
@@ -9,7 +9,7 @@
     /// <summary>
     /// Provides methods and properties for deframing streams from PNGs.
     /// </summary>
-    internal class ZlibInflateStream : Stream
+    internal sealed class ZlibInflateStream : Stream
     {
         /// <summary>
         /// The inner raw memory stream