/// <summary>
/// Returns a sequence of <see cref="TagHelperDescriptor"/>s for tag helpers that are registered in the
/// specified <paramref name="documentRoot"/>.
/// </summary>
/// <param name="documentRoot">The <see cref="Block"/> to scan for tag helper registrations in.</param>
/// <param name="errorSink">Used to manage <see cref="RazorError"/>s encountered during the Razor parsing
/// phase.</param>
/// <returns><see cref="TagHelperDescriptor"/>s that are applicable to the <paramref name="documentRoot"/>
/// </returns>
protected virtual IEnumerable<TagHelperDescriptor> GetTagHelperDescriptors([NotNull] Block documentRoot,
[NotNull] ParserErrorSink errorSink)
{
var addOrRemoveTagHelperSpanVisitor =
new TagHelperDirectiveSpanVisitor(TagHelperDescriptorResolver, errorSink);
return addOrRemoveTagHelperSpanVisitor.GetDescriptors(documentRoot);
}
/// <summary>
/// Returns a sequence of <see cref="TagHelperDescriptor"/>s for tag helpers that are registered in the
/// specified <paramref name="documentRoot"/>.
/// </summary>
/// <param name="documentRoot">The <see cref="Block"/> to scan for tag helper registrations in.</param>
/// <param name="errorSink">Used to manage <see cref="RazorError"/>s encountered during the Razor parsing
/// phase.</param>
/// <returns><see cref="TagHelperDescriptor"/>s that are applicable to the <paramref name="documentRoot"/>
/// </returns>
protected virtual IEnumerable<TagHelperDescriptor> GetTagHelperDescriptors(Block documentRoot,
ErrorSink errorSink)
{
if (documentRoot == null)
{
throw new ArgumentNullException(nameof(documentRoot));
}
if (errorSink == null)
{
throw new ArgumentNullException(nameof(errorSink));
}
var addOrRemoveTagHelperSpanVisitor =
new TagHelperDirectiveSpanVisitor(TagHelperDescriptorResolver, errorSink);
return addOrRemoveTagHelperSpanVisitor.GetDescriptors(documentRoot);
}
