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SolutionCodeFixApplier.cs
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SolutionCodeFixApplier.cs
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// Copyright (c) Microsoft. All Rights Reserved. Licensed under the MIT license. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.Extensions.Logging;
namespace Microsoft.CodeAnalysis.Tools.Analyzers
{
internal class SolutionCodeFixApplier : ICodeFixApplier
{
public async Task<Solution> ApplyCodeFixesAsync(
Solution solution,
CodeAnalysisResult result,
CodeFixProvider codeFix,
ILogger logger,
CancellationToken cancellationToken)
{
var diagnosticId = result.Diagnostics.FirstOrDefault().Value.FirstOrDefault()?.Id;
var fixAllProvider = codeFix.GetFixAllProvider();
if (fixAllProvider?.GetSupportedFixAllScopes()?.Contains(FixAllScope.Solution) != true)
{
logger.LogWarning(Resources.Unable_to_fix_0_Code_fix_1_doesnt_support_Fix_All_in_Solution, diagnosticId, codeFix.GetType().Name);
return solution;
}
var project = solution.Projects.FirstOrDefault();
if (project == null)
{
throw new InvalidOperationException(string.Format(Resources.Solution_0_has__no_projects, solution));
}
var fixAllContext = new FixAllContext(
project: project,
codeFixProvider: codeFix,
scope: FixAllScope.Solution,
codeActionEquivalenceKey: null,
diagnosticIds: codeFix.FixableDiagnosticIds,
fixAllDiagnosticProvider: new DiagnosticProvider(result),
cancellationToken: cancellationToken);
try
{
var action = await fixAllProvider.GetFixAsync(fixAllContext).ConfigureAwait(false);
var operations = action != null
? await action.GetOperationsAsync(cancellationToken).ConfigureAwait(false)
: ImmutableArray<CodeActionOperation>.Empty;
var applyChangesOperation = operations.OfType<ApplyChangesOperation>().SingleOrDefault();
return applyChangesOperation?.ChangedSolution ?? solution;
}
catch (Exception ex)
{
logger.LogWarning(Resources.Failed_to_apply_code_fix_0_for_1_2, codeFix?.GetType().Name, diagnosticId, ex.Message);
return solution;
}
}
private class DiagnosticProvider : FixAllContext.DiagnosticProvider
{
private static Task<IEnumerable<Diagnostic>> EmptyDignosticResult => Task.FromResult(Enumerable.Empty<Diagnostic>());
private readonly IReadOnlyDictionary<Project, List<Diagnostic>> _diagnosticsByProject;
internal DiagnosticProvider(CodeAnalysisResult analysisResult)
{
_diagnosticsByProject = analysisResult.Diagnostics;
}
public override Task<IEnumerable<Diagnostic>> GetAllDiagnosticsAsync(Project project, CancellationToken cancellationToken)
{
return GetProjectDiagnosticsAsync(project, cancellationToken);
}
public override Task<IEnumerable<Diagnostic>> GetDocumentDiagnosticsAsync(Document document, CancellationToken cancellationToken)
{
throw new NotImplementedException();
}
public override Task<IEnumerable<Diagnostic>> GetProjectDiagnosticsAsync(Project project, CancellationToken cancellationToken)
{
return _diagnosticsByProject.ContainsKey(project)
? Task.FromResult<IEnumerable<Diagnostic>>(_diagnosticsByProject[project])
: EmptyDignosticResult;
}
}
}
}