Support rename symbols about scry HOT 2 CLOSED

require "compiler/crystal/syntax"

class Charify < Crystal::Transformer
  def transform(node : Crystal::Var)
    if node.name == "a"
      return Crystal::Var.new("c")
    end
    node
  end
end

nodes = Crystal::Parser.parse("a = 1; b = a")
puts nodes.transform(Charify.new) # => "c = 1; b = c"