public override SyntaxNode VisitUsingStatement(UsingStatementSyntax node)
{
node = (UsingStatementSyntax)base.VisitUsingStatement(node);
if (SimplifyNestedUsingStatementAnalyzer.ContainsEmbeddableUsingStatement(node))
{
var block = (BlockSyntax)node.Statement;
SyntaxToken closeParen = node.CloseParenToken;
SyntaxTriviaList trailing = closeParen.TrailingTrivia;
if (!trailing.Any(SyntaxKind.EndOfLineTrivia))
{
trailing = trailing.EmptyIfWhitespace().AddRange(block.OpenBraceToken.TrailingTrivia);
closeParen = closeParen.WithTrailingTrivia(trailing);
}
node = node.Update(
usingKeyword: node.UsingKeyword,
openParenToken: node.OpenParenToken,
declaration: node.Declaration,
expression: node.Expression,
closeParenToken: closeParen,
statement: block.Statements[0]);
}
return(node);
}
public override SyntaxNode VisitUsingStatement(UsingStatementSyntax node)
{
if (SimplifyNestedUsingStatementAnalyzer.ContainsEmbeddableUsingStatement(node))
{
var block = (BlockSyntax)node.Statement;
node = node.WithStatement(block.Statements[0]);
}
return(base.VisitUsingStatement(node));
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out UsingStatementSyntax usingStatement))
{
return;
}
bool fMultiple = usingStatement.Statement
.DescendantNodes()
.Any(f => f.IsKind(SyntaxKind.UsingStatement) && SimplifyNestedUsingStatementAnalyzer.ContainsEmbeddableUsingStatement((UsingStatementSyntax)f));
CodeAction codeAction = CodeAction.Create(
"Remove braces",
cancellationToken => SimplifyNestedUsingStatementRefactoring.RefactorAsync(context.Document, usingStatement, cancellationToken),
GetEquivalenceKey(DiagnosticIdentifiers.SimplifyNestedUsingStatement));
context.RegisterCodeFix(codeAction, context.Diagnostics);
}