class RuboCop::AST::Node
def initialize(type, children = [], properties = {})
- See: https://www.rubydoc.info/gems/ast/AST/Node:initialize -
def initialize(type, children = [], properties = {}) @mutable_attributes = {} # ::AST::Node#initialize freezes itself. super # #parent= may be invoked multiple times for a node because there are # pending nodes while constructing AST and they are replaced later. # For example, `lvar` and `send` type nodes are initially created as an # `ident` type node and fixed to the appropriate type later. # So, the #parent attribute needs to be mutable. each_child_node do |child_node| child_node.parent = self unless child_node.complete? end end