1 files changed, 105 insertions, 0 deletions
diff --git a/main/src/addins/CSharpBinding/MonoDevelop.CSharp.CodeFixes/GenerateConstructor/AbstractGenerateMemberCodeFixProvider.cs b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.CodeFixes/GenerateConstructor/AbstractGenerateMemberCodeFixProvider.cs
new file mode 100644
index 0000000000..a6ced93451
--- /dev/null
+++ b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.CodeFixes/GenerateConstructor/AbstractGenerateMemberCodeFixProvider.cs
@@ -0,0 +1,105 @@
+//
+// AbstractGenerateMemberCodeFixProvider.cs
+//
+// Author:
+//       Mike Krüger <mkrueger@xamarin.com>
+//
+// Copyright (c) 2015 Xamarin Inc. (http://xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Composition;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.CodeActions;
+using Microsoft.CodeAnalysis.CodeFixes;
+using Microsoft.CodeAnalysis.CSharp.Extensions;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Shared.Extensions;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Text;
+using ICSharpCode.NRefactory6.CSharp;
+
+namespace MonoDevelop.CSharp.CodeFixes.GenerateConstructor
+{
+	internal abstract class AbstractGenerateMemberCodeFixProvider : CodeFixProvider
+	{
+		public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
+		{
+			// NOTE(DustinCa): Not supported in REPL for now.
+			if (context.Document.SourceCodeKind == SourceCodeKind.Interactive)
+			{
+				return;
+			}
+			var model = await context.Document.GetSemanticModelAsync(context.CancellationToken).ConfigureAwait (false);
+			if (model.IsFromGeneratedCode (context.CancellationToken))
+				return;
+
+			var root = await model.SyntaxTree.GetRootAsync (context.CancellationToken).ConfigureAwait (false);
+			var names = GetTargetNodes(root, context.Span);
+			foreach (var name in names)
+			{
+				var codeActions = await GetCodeActionsAsync(context.Document, name, context.CancellationToken).ConfigureAwait(false);
+				if (codeActions == null)
+				{
+					continue;
+				}
+				foreach (var act in codeActions)
+					context.RegisterCodeFix (act, context.Diagnostics);
+				return;
+			}
+		}
+
+		protected abstract Task<IEnumerable<CodeAction>> GetCodeActionsAsync(Document document, SyntaxNode node, CancellationToken cancellationToken);
+
+		protected virtual SyntaxNode GetTargetNode(SyntaxNode node)
+		{
+			return node;
+		}
+
+		protected virtual bool IsCandidate(SyntaxNode node)
+		{
+			return false;
+		}
+
+		protected virtual IEnumerable<SyntaxNode> GetTargetNodes(SyntaxNode root, TextSpan span)
+		{
+			var token = root.FindToken(span.Start);
+			if (!token.Span.IntersectsWith(span))
+			{
+				yield break;
+			}
+
+			var nodes = token.GetAncestors<SyntaxNode>().Where(IsCandidate);
+			foreach (var node in nodes)
+			{
+				var name = GetTargetNode(node);
+
+				if (name != null)
+				{
+					yield return name;
+				}
+			}
+		}
+	}
+	
+}