Parent child linkage

lib/ast_node.rb

@@ -8,21 +8,24 @@
 #      speed: "literal"
 #  }, ["if_statement", "exec_sequence"])
 class AstNode
-    attr_reader :args, :body, :comments, :kind
-    def initialize(args:, body: nil, comment: "", kind:)
-        @comment, @kind = comment, kind
+    attr_reader :args, :body, :comments, :kind, :parent
+    def initialize(parent = nil, args:, body: nil, comment: "", kind:)
+        @comment, @kind, @parent = comment, kind, parent
 
-        @args = args.map {|m,e| [m, maybe_initialize(e)] }.to_h if args
-        @body = body.map {|e| maybe_initialize(e) } if body
-    rescue => e
-      binding.pry
+        @args = args.map  do |key, value|
+          [key, maybe_initialize(key, value)]
+        end.to_h if args
+
+        @body = body.map do |e|
+          maybe_initialize(self, e)
+        end if body
     end
 
-    def maybe_initialize(hash)
-      well_formed?(hash) ? AstNode.new(**hash) : hash
+    def maybe_initialize(parent, hash)
+      is_node?(hash) ? AstNode.new(self, **hash) : hash
     end
 
-    def well_formed?(hash)
+    def is_node?(hash)
       hash.is_a?(Hash) && hash.has_key?(:kind) && hash.has_key?(:args)
     end
 end