private void ProcessAttributes(TagHelperIntermediateNode node)
{
for (var i = node.Children.Count - 1; i >= 0; i--)
{
if (node.Children[i] is TagHelperPropertyIntermediateNode propertyNode)
{
if (HasComplexChildContent(propertyNode))
{
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_UnsupportedComplexContent(
propertyNode,
propertyNode.AttributeName));
node.Children.RemoveAt(i);
continue;
}
node.Children[i] = new ComponentAttributeExtensionNode(propertyNode);
}
else if (node.Children[i] is TagHelperHtmlAttributeIntermediateNode htmlNode)
{
if (HasComplexChildContent(htmlNode))
{
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_UnsupportedComplexContent(
htmlNode,
htmlNode.AttributeName));
node.Children.RemoveAt(i);
continue;
}
}
}
}
private void ProcessAttributes(TagHelperIntermediateNode node)
{
for (var i = node.Children.Count - 1; i >= 0; i--)
{
if (node.Children[i] is TagHelperPropertyIntermediateNode propertyNode)
{
if (TrySimplifyContent(propertyNode) && node.TagHelpers.Any(t => t.IsComponentTagHelper()))
{
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_UnsupportedComplexContent(
propertyNode,
propertyNode.AttributeName));
node.Children.RemoveAt(i);
continue;
}
}
else if (node.Children[i] is TagHelperHtmlAttributeIntermediateNode htmlNode)
{
if (TrySimplifyContent(htmlNode) && node.TagHelpers.Any(t => t.IsComponentTagHelper()))
{
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_UnsupportedComplexContent(
htmlNode,
htmlNode.AttributeName));
node.Children.RemoveAt(i);
continue;
}
}
}
}
private void RewriteUsage(TagHelperIntermediateNode node, TagHelperDescriptor tagHelper)
{
// Ignore Kind here. Some versions of Razor have a bug in the serializer that ignores it.
// We need to surround the contents of the node with open and close nodes to ensure the component
// is scoped correctly.
node.Children.Insert(0, new ComponentOpenExtensionNode()
{
TypeName = tagHelper.GetTypeName(),
});
for (var i = node.Children.Count - 1; i >= 0; i--)
{
if (node.Children[i] is TagHelperBodyIntermediateNode bodyNode)
{
// Replace with a node that we recognize so that it we can do proper scope tracking.
//
// Note that we force the body node to be last, this is done to push it after the
// attribute nodes. This gives us the ordering we want for the render tree.
node.Children.RemoveAt(i);
node.Children.Add(new ComponentBodyExtensionNode(bodyNode)
{
TagMode = node.TagMode,
TagName = node.TagName,
});
}
}
node.Children.Add(new ComponentCloseExtensionNode());
// Now we need to rewrite any set property or HTML nodes to call the appropriate AddAttribute api.
for (var i = node.Children.Count - 1; i >= 0; i--)
{
if (node.Children[i] is TagHelperPropertyIntermediateNode propertyNode &&
propertyNode.TagHelper == tagHelper)
{
// We don't support 'complex' content for components (mixed C# and markup) right now.
// It's not clear yet if Blazor will have a good scenario to use these constructs.
//
// This is where a lot of the complexity in the Razor/TagHelpers model creeps in and we
// might be able to avoid it if these features aren't needed.
if (HasComplexChildContent(propertyNode))
{
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_UnsupportedComplexContent(
propertyNode,
propertyNode.AttributeName));
node.Children.RemoveAt(i);
continue;
}
node.Children[i] = new ComponentAttributeExtensionNode(propertyNode);
}
