public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
UsingStatementSyntax usingStatement = root
.FindNode(context.Span, getInnermostNodeForTie: true)?
.FirstAncestorOrSelf <UsingStatementSyntax>();
if (usingStatement == null)
{
return;
}
bool isMultiple = usingStatement.Statement
.DescendantNodes()
.Any(f => f.IsKind(SyntaxKind.UsingStatement) && UsingStatementAnalysis.ContainsEmbeddableUsingStatement((UsingStatementSyntax)f));
CodeAction codeAction = CodeAction.Create(
"Remove braces from nested using statement" + ((isMultiple) ? "s" : ""),
cancellationToken =>
{
return(RemoveBracesFromNestedUsingStatementRefactoring.RefactorAsync(
context.Document,
usingStatement,
cancellationToken));
},
DiagnosticIdentifiers.SimplifyNestedUsingStatement + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, context.Diagnostics);
}
public static bool CanRefactor(UsingStatementSyntax usingStatement)
{
return(UsingStatementAnalysis.ContainsEmbeddableUsingStatement(usingStatement) &&
!usingStatement
.Ancestors()
.Any(f => f.IsKind(SyntaxKind.UsingStatement) &&
UsingStatementAnalysis.ContainsEmbeddableUsingStatement((UsingStatementSyntax)f)));
}
public override SyntaxNode VisitUsingStatement(UsingStatementSyntax node)
{
if (UsingStatementAnalysis.ContainsEmbeddableUsingStatement(node))
{
var block = (BlockSyntax)node.Statement;
node = node.WithStatement(block.Statements[0]);
}
return(base.VisitUsingStatement(node));
}