private void RewriteUsage(Context context, TagHelperIntermediateNode node, TagHelperDescriptor tagHelper)
{
if (!tagHelper.IsDefaultKind())
{
return;
}
context.Add(tagHelper);
// First we need to insert a node for the creation of the tag helper, and the hook up to the execution
// context. This should come after the body node and any existing create nodes.
//
// If we're dealing with something totally malformed, then we'll end up just inserting at the end, and that's not
// so bad.
var i = 0;
// Find the body node.
while (i < node.Children.Count && node.Children[i] is TagHelperBodyIntermediateNode)
{
i++;
}
while (i < node.Children.Count && node.Children[i] is DefaultTagHelperBodyIntermediateNode)
{
i++;
}
// Now find the last create node.
while (i < node.Children.Count && node.Children[i] is DefaultTagHelperCreateIntermediateNode)
{
i++;
}
// Now i has the right insertion point.
node.Children.Insert(i, new DefaultTagHelperCreateIntermediateNode()
{
FieldName = context.GetFieldName(tagHelper),
TagHelper = tagHelper,
TypeName = tagHelper.GetTypeName(),
});
// Next we need to rewrite any property nodes to use the field and property name for this
// tag helper.
for (i = 0; i < node.Children.Count; i++)
{
if (node.Children[i] is TagHelperPropertyIntermediateNode propertyNode &&
propertyNode.TagHelper == tagHelper)
{
// This belongs to the current tag helper, replace it.
node.Children[i] = new DefaultTagHelperPropertyIntermediateNode(propertyNode)
{
FieldName = context.GetFieldName(tagHelper),
PropertyName = propertyNode.BoundAttribute.GetPropertyName(),
};
}
}
}