Function name_for_constructor_search 

fn name_for_constructor_search(
    syntax: &SyntaxNode,
    position: FilePosition,
) -> Option<Name>

Returns Some if the cursor is at a position where we should search for constructor/initialization usages. This is used to implement the special constructor search behavior when the cursor is on specific tokens in a struct/enum/variant definition.

Returns

• Some(name) if the cursor is on:
  • { after a struct/enum/variant definition
  • ( for tuple structs/variants
  • ; for unit structs
  • The type name in a struct/enum/variant definition
• None otherwise

The returned name is the name of the type whose constructor usages should be searched for.