require_relative "environment" module Lox class Function def initialize(decl) @decl = decl end def arity = @decl.params.size def call(interpreter, args) env = Environment.new(interpreter.globals) @decl.params.map(&:lexeme).zip(args).each do |name, value| env.define(name, value) end interpreter.execute_block(@decl.body, env) nil end def to_s = "" end end