- adds a facilitation method to add all ms extensions to the reader

Author: baywet

src/Microsoft.OpenApi.Readers/OpenApiReaderSettings.cs

@@ -3,6 +3,7 @@
 
 using Microsoft.OpenApi.Any;
 using Microsoft.OpenApi.Interfaces;
+using Microsoft.OpenApi.MicrosoftExtensions;
 using Microsoft.OpenApi.Readers.Interface;
 using Microsoft.OpenApi.Validations;
 using System;
@@ -74,5 +75,31 @@ public class OpenApiReaderSettings
         /// from an <see cref="OpenApiStreamReader"/> object.
         /// </summary>
         public bool LeaveStreamOpen { get; set; }
+        
+        /// <summary>
+        /// Adds parsers for Microsoft OpenAPI extensions:
+        /// - <see cref="OpenApiPagingExtension"/>
+        /// - <see cref="OpenApiEnumValuesDescriptionExtension"/>
+        /// - <see cref="OpenApiPrimaryErrorMessageExtension"/>
+        /// - <see cref="OpenApiDeprecationExtension"/>
+        /// - <see cref="OpenApiReservedParameterExtension"/>
+        /// - <see cref="OpenApiEnumFlagsExtension"/>
+        /// NOTE: The list of extensions is subject to change.
+        /// </summary>
+        public void AddMicrosoftExtensionParsers()
+        {
+            if (!ExtensionParsers.ContainsKey(OpenApiPagingExtension.Name)) 
+                ExtensionParsers.Add(OpenApiPagingExtension.Name, static (i, _) => OpenApiPagingExtension.Parse(i));
+            if (!ExtensionParsers.ContainsKey(OpenApiEnumValuesDescriptionExtension.Name)) 
+                ExtensionParsers.Add(OpenApiEnumValuesDescriptionExtension.Name, static (i, _ ) => OpenApiEnumValuesDescriptionExtension.Parse(i));
+            if (!ExtensionParsers.ContainsKey(OpenApiPrimaryErrorMessageExtension.Name)) 
+                ExtensionParsers.Add(OpenApiPrimaryErrorMessageExtension.Name, static (i, _ ) => OpenApiPrimaryErrorMessageExtension.Parse(i));
+            if (!ExtensionParsers.ContainsKey(OpenApiDeprecationExtension.Name)) 
+                ExtensionParsers.Add(OpenApiDeprecationExtension.Name, static (i, _ ) => OpenApiDeprecationExtension.Parse(i));
+            if (!ExtensionParsers.ContainsKey(OpenApiReservedParameterExtension.Name)) 
+                ExtensionParsers.Add(OpenApiReservedParameterExtension.Name, static (i, _ ) => OpenApiReservedParameterExtension.Parse(i));
+            if (!ExtensionParsers.ContainsKey(OpenApiEnumFlagsExtension.Name)) 
+                ExtensionParsers.Add(OpenApiEnumFlagsExtension.Name, static (i, _ ) => OpenApiEnumFlagsExtension.Parse(i));
+        }
     }
 }