In the JsEngineFactoryCollection class was added a Count property and GetRegisteredFactories method

Author: Taritsyn

src/JavaScriptEngineSwitcher.Core/JavaScriptEngineSwitcher.Core.csproj

@@ -13,19 +13,7 @@
 		<Description>JavaScript Engine Switcher determines unified interface for access to the basic features of popular JavaScript engines (MSIE JavaScript Engine for .NET, Microsoft ClearScript.V8, Jurassic, Jint, ChakraCore, VroomJs and NiL.JS). This library allows you to quickly and easily switch to using of another JavaScript engine.</Description>
 		<PackageIconUrl>https://raw.githubusercontent.com/Taritsyn/JavaScriptEngineSwitcher/master/Icons/JavaScriptEngineSwitcher_Core_Logo128x128.png</PackageIconUrl>
 		<PackageTags>JavaScriptEngineSwitcher;JavaScript;ECMAScript</PackageTags>
-		<PackageReleaseNotes>1. In the `JsEngineSwitcher` class a `Instance` property was renamed to the `Current` property;
-2. Now you can implement your own version of the `JsEngineSwitcher` class;
-3. Format of the error messages was unified;
-4. Created a new exception classes: `JsCompilationException`, `JsEngineException`, `JsFatalException`, `JsInterruptedException`, `JsTimeoutException`, `JsScriptException` and `JsUsageException`. These exceptions are responsible for handling errors, some of which were previously handled by the `JsRuntimeException` class;
-5. In the `JsException` class was added two new properties: `Category` and `Description`;
-6. From the `JsRuntimeException` class was removed one property - `ErrorCode`;
-7. In the `JsRuntimeException` class was added three new properties: `Type`, `DocumentName` and `CallStack`;
-8. `JsEngineLoadException` class now is inherited from the `JsEngineException` class;
-9. Removed a `EmptyValueException` class;
-10. `Format` method of the `JsErrorHelpers` class was renamed to the `GenerateErrorDetails`;
-11. Part of the auxiliary code was moved to external libraries: PolyfillsForOldDotNet and AdvancedStringBuilder;
-12. In `IJsEngine` interface was added two new  properties: `SupportsScriptInterruption` and `SupportsScriptPrecompilation`, and four new methods: `Interrupt`, `Precompile`, `PrecompileFile` and `PrecompileResource`;
-13. Added support of .NET Standard 2.0.</PackageReleaseNotes>
+		<PackageReleaseNotes>In the `JsEngineFactoryCollection` class was added a `Count` property and `GetRegisteredFactories` method.</PackageReleaseNotes>
 	</PropertyGroup>
 
 	<Import Project="../../build/common.props" />

src/JavaScriptEngineSwitcher.Core/JsEngineFactoryCollection.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 
 namespace JavaScriptEngineSwitcher.Core
 {
@@ -15,6 +16,23 @@ public sealed class JsEngineFactoryCollection : IEnumerable<IJsEngineFactory>
 		private readonly Dictionary<string, IJsEngineFactory> _factories =
 			new Dictionary<string, IJsEngineFactory>();
 
+		/// <summary>
+		/// Gets a number of factories in the collection
+		/// </summary>
+		public int Count
+		{
+			get { return _factories.Count; }
+		}
+
+
+		/// <summary>
+		/// Gets all registered factories
+		/// </summary>
+		/// <returns>A read-only collection of all factories in the collection</returns>
+		public ReadOnlyCollection<IJsEngineFactory> GetRegisteredFactories()
+		{
+			return new List<IJsEngineFactory>(_factories.Values).AsReadOnly();
+		}
 
 		/// <summary>
 		/// Gets a factory by JS engine name
@@ -91,25 +109,16 @@ public void Clear()
 			_factories.Clear();
 		}
 
-		/// <summary>
-		/// Gets an enumerator for all factories in the collection
-		/// </summary>
-		/// <returns>Enumerator for all factories in the collection</returns>
-		private IEnumerator<IJsEngineFactory> InnerGetEnumerator()
-		{
-			return _factories.Values.GetEnumerator();
-		}
-
 		#region IEnumerable implementation
 
 		public IEnumerator<IJsEngineFactory> GetEnumerator()
 		{
-			return InnerGetEnumerator();
+			return _factories.Values.GetEnumerator();
 		}
 
 		IEnumerator IEnumerable.GetEnumerator()
 		{
-			return InnerGetEnumerator();
+			return _factories.Values.GetEnumerator();
 		}
 
 		#endregion

src/JavaScriptEngineSwitcher.Core/readme.txt

@@ -20,32 +20,8 @@
    =============
    RELEASE NOTES
    =============
-   1.  In the `JsEngineSwitcher` class a `Instance` property was renamed to the
-       `Current` property;
-   2.  Now you can implement your own version of the `JsEngineSwitcher` class;
-   3.  Format of the error messages was unified;
-   4.  Created a new exception classes: `JsCompilationException`,
-       `JsEngineException`, `JsFatalException`, `JsInterruptedException`,
-       `JsTimeoutException`, `JsScriptException` and `JsUsageException`. These
-       exceptions are responsible for handling errors, some of which were
-       previously handled by the `JsRuntimeException` class;
-   5.  In the `JsException` class was added two new properties: `Category` and
-       `Description`;
-   6.  From the `JsRuntimeException` class was removed one property - `ErrorCode`;
-   7.  In the `JsRuntimeException` class was added three new properties: `Type`,
-       `DocumentName` and `CallStack`;
-   8.  `JsEngineLoadException` class now is inherited from the `JsEngineException`
-       class;
-   9.  Removed a `EmptyValueException` class;
-   10. `Format` method of the `JsErrorHelpers` class was renamed to the
-       `GenerateErrorDetails`;
-   11. Part of the auxiliary code was moved to external libraries:
-       PolyfillsForOldDotNet and AdvancedStringBuilder;
-   12. In `IJsEngine` interface was added two new  properties:
-       `SupportsScriptInterruption` and `SupportsScriptPrecompilation`, and four
-       new methods: `Interrupt`, `Precompile`, `PrecompileFile` and
-       `PrecompileResource`;
-   13. Added support of .NET Standard 2.0.
+   In the `JsEngineFactoryCollection` class was added a `Count` property and
+   `GetRegisteredFactories` method.
 
    =============
    DOCUMENTATION