Readonlyargumentsarguments can be undefined, for example when calling as a(1, ,3)
Optionalinfixmarks function calls like 3 %xx% 4 which have been written in special infix notation; deprecated in v2
allows to attach additional information to the node
the original string retrieved from R, can be used for further identification
The location may differ from what is stated in Source#fullRange as it represents the location identified by the R parser.
ReadonlynamedReadonlytype
Direct calls of functions like
(function(x) { x })(3).See
RNamedFunctionCall