public override async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
{
SyntaxNode root = await context.Document.GetSyntaxRootAsync(context.CancellationToken);
ForEachStatementSyntax forEachStatement = root
.FindNode(context.Span, getInnermostNodeForTie: true)?
.FirstAncestorOrSelf <ForEachStatementSyntax>();
if (forEachStatement == null)
{
return;
}
SemanticModel semanticModel = await context.Document.GetSemanticModelAsync(context.CancellationToken);
if (semanticModel == null)
{
return;
}
ChangeType(context, semanticModel, forEachStatement);
RenameIdentifierNameAccordingToTypeName(context, semanticModel, forEachStatement);
ChangeTypeAccordingToExpression(context, semanticModel, forEachStatement);
if (ForEachToForRefactoring.CanRefactor(forEachStatement, semanticModel, context.CancellationToken))
{
context.RegisterRefactoring(
"Convert foreach to for",
cancellationToken => ForEachToForRefactoring.RefactorAsync(context.Document, forEachStatement, cancellationToken));
}
}
private void AnalyzeForEachStatement(SyntaxNodeAnalysisContext context)
{
if (GeneratedCodeAnalyzer?.IsGeneratedCode(context) == true)
{
return;
}
var forEachStatement = (ForEachStatementSyntax)context.Node;
if (!ForEachToForRefactoring.CanRefactor(forEachStatement, context.SemanticModel, context.CancellationToken))
{
return;
}
context.ReportDiagnostic(
DiagnosticDescriptors.ConvertForEachToFor,
forEachStatement.Type.GetLocation());
TextSpan span = TextSpan.FromBounds(forEachStatement.ForEachKeyword.SpanStart + 3, forEachStatement.ForEachKeyword.Span.End);
Location location = Location.Create(forEachStatement.SyntaxTree, span);
context.ReportDiagnostic(DiagnosticDescriptors.ConvertForEachToForFadeOut, location);
}