private static bool ValidateTypeArguments(ComponentExtensionNode node, Dictionary <string, GenericTypeNameRewriter.Binding> bindings)
{
var missing = new List <BoundAttributeDescriptor>();
foreach (var binding in bindings)
{
if (binding.Value.Node == null || string.IsNullOrWhiteSpace(binding.Value.Content))
{
missing.Add(binding.Value.Attribute);
}
}
if (missing.Count > 0)
{
// We add our own error for this because its likely the user will see other errors due
// to incorrect codegen without the types. Our errors message will pretty clearly indicate
// what to do, whereas the other errors might be confusing.
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_GenericComponentMissingTypeArgument(node.Source, node, missing));
return(false);
}
return(true);
}
private void Process(ComponentExtensionNode node)
{
// First collect all of the information we have about each type parameter
var bindings = new Dictionary <string, GenericTypeNameRewriter.Binding>();
foreach (var attribute in node.Component.GetTypeParameters())
{
bindings.Add(attribute.Name, new GenericTypeNameRewriter.Binding()
{
Attribute = attribute,
});
}
foreach (var typeArgumentNode in node.TypeArguments)
{
var binding = bindings[typeArgumentNode.TypeParameterName];
binding.Node = typeArgumentNode;
binding.Content = GetContent(typeArgumentNode);
}
// Right now we don't have type inference, so all type arguments are required.
var missing = new List <BoundAttributeDescriptor>();
foreach (var binding in bindings)
{
if (binding.Value.Node == null || string.IsNullOrWhiteSpace(binding.Value.Content))
{
missing.Add(binding.Value.Attribute);
}
}
if (missing.Count > 0)
{
// We add our own error for this because its likely the user will see other errors due
// to incorrect codegen without the types. Our errors message will pretty clearly indicate
// what to do, whereas the other errors might be confusing.
node.Diagnostics.Add(BlazorDiagnosticFactory.Create_GenericComponentMissingTypeArgument(node.Source, node, missing));
}
var rewriter = new GenericTypeNameRewriter(bindings);
// Rewrite the component type name
node.TypeName = RewriteTypeName(rewriter, node.TypeName);
foreach (var attribute in node.Attributes)
{
if (attribute.BoundAttribute?.IsGenericTypedProperty() ?? false && attribute.TypeName != null)
{
// If we know the type name, then replace any generic type parameter inside it with
// the known types.
attribute.TypeName = RewriteTypeName(rewriter, attribute.TypeName);
}
}
foreach (var childContent in node.ChildContents)
{
if (childContent.BoundAttribute?.IsGenericTypedProperty() ?? false && childContent.TypeName != null)
{
// If we know the type name, then replace any generic type parameter inside it with
// the known types.
childContent.TypeName = RewriteTypeName(rewriter, childContent.TypeName);
}
}
}
