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//
// AbstractAsyncCodeFix.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.Immutable;
using System.Linq;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Formatting;
using Roslyn.Utilities;
using Microsoft.CodeAnalysis.FindSymbols;
using Microsoft.CodeAnalysis.CodeActions;
using ICSharpCode.NRefactory6.CSharp;
using MonoDevelop.CSharp.CodeFixes;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
namespace MonoDevelop.CSharp.CodeFixes
{
internal abstract partial class AbstractAsyncCodeFix : CodeFixProvider
{
protected abstract Task<CodeAction> GetCodeFix(SyntaxNode root, SyntaxNode node, Document document, Diagnostic diagnostic, CancellationToken cancellationToken);
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var model = await context.Document.GetSemanticModelAsync(context.CancellationToken).ConfigureAwait (false);
if (model.IsFromGeneratedCode (context.CancellationToken))
return;
var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
SyntaxNode node;
if (!TryGetNode(root, context.Span, out node))
{
return;
}
var diagnostic = context.Diagnostics.FirstOrDefault();
var codeAction = await GetCodeFix(root, node, context.Document, diagnostic, context.CancellationToken).ConfigureAwait(false);
if (codeAction != null)
{
context.RegisterCodeFix(codeAction, diagnostic);
}
}
private bool TryGetNode(SyntaxNode root, Microsoft.CodeAnalysis.Text.TextSpan span, out SyntaxNode node)
{
node = null;
var ancestors = root.FindToken(span.Start).GetAncestors<SyntaxNode>();
if (!ancestors.Any())
{
return false;
}
node = ancestors.FirstOrDefault(n => n.Span.Contains(span) && n != root);
return node != null;
}
}
}
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