protected sealed override async Task RegisterCodeFixesAsync(SyntaxNode root, CodeFixContext context)
{
var diagnostic = context.Diagnostics.First();
var diagnosticSpan = diagnostic.Location.SourceSpan;
var syntaxNode = root.FindNode(diagnosticSpan, getInnermostNodeForTie: true) as PrefixUnaryExpressionSyntax;
if (syntaxNode == null)
{
return;
}
context.RegisterCodeFix(
CodeAction.Create(
Title,
c =>
{
var expression = syntaxNode.Operand.RemoveParentheses();
var newBinary = ChangeOperator((BinaryExpressionSyntax)expression);
if (syntaxNode.Parent is ExpressionSyntax &&
!ExpressionTypesWithNoParens.Any(type => type.IsInstanceOfType(syntaxNode.Parent)))
{
newBinary = SyntaxFactory.ParenthesizedExpression(newBinary);
}
var newRoot = root.ReplaceNode(
syntaxNode,
newBinary.WithAdditionalAnnotations(Formatter.Annotation));
return(Task.FromResult(context.Document.WithSyntaxRoot(newRoot)));
}),
context.Diagnostics);
}
public override sealed async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
var diagnostic = context.Diagnostics.First();
var diagnosticSpan = diagnostic.Location.SourceSpan;
var syntaxNode = root.FindNode(diagnosticSpan, getInnermostNodeForTie: true) as PrefixUnaryExpressionSyntax;
if (syntaxNode == null)
{
return;
}
context.RegisterCodeFix(
CodeAction.Create(
Title,
c =>
{
var expression = syntaxNode.Operand;
var parenthesized = expression as ParenthesizedExpressionSyntax;
while (parenthesized != null)
{
expression = parenthesized.Expression;
parenthesized = expression as ParenthesizedExpressionSyntax;
}
var newBinary = ChangeOperator((BinaryExpressionSyntax)expression);
if (syntaxNode.Parent is ExpressionSyntax &&
!ExpressionTypesWithNoParens.Any(type => type.IsInstanceOfType(syntaxNode.Parent)))
{
newBinary = SyntaxFactory.ParenthesizedExpression(newBinary);
}
var newRoot = root.ReplaceNode(
syntaxNode,
newBinary.WithAdditionalAnnotations(Formatter.Annotation));
return(Task.FromResult(context.Document.WithSyntaxRoot(newRoot)));
}),
context.Diagnostics);
}