public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
if (!Settings.IsCodeFixEnabled(CodeFixIdentifiers.RemoveTypeParameter))
{
return;
}
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out TypeParameterSyntax typeParameter))
{
return;
}
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case CompilerDiagnosticIdentifiers.TypeParameterHasSameNameAsTypeParameterFromOuterType:
{
TypeParameterInfo typeParameterInfo = SyntaxInfo.TypeParameterInfo(typeParameter);
if (!typeParameterInfo.Success)
{
break;
}
CodeAction codeAction = CodeAction.Create(
$"Remove type parameter '{typeParameterInfo.Name}'",
cancellationToken =>
{
GenericInfo genericInfo = SyntaxInfo.GenericInfo(typeParameterInfo.Declaration);
GenericInfo newGenericInfo = genericInfo.RemoveTypeParameter(typeParameter);
TypeParameterConstraintClauseSyntax constraintClause = typeParameterInfo.ConstraintClause;
if (constraintClause != null)
{
newGenericInfo = newGenericInfo.RemoveConstraintClause(constraintClause);
}
return(context.Document.ReplaceNodeAsync(genericInfo.Declaration, newGenericInfo.Declaration, cancellationToken));
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}