Method: Lisp::PrimEnvironment.environment_assignablep_impl

Defined in:
lib/rubylisp/prim_environment.rb

.environment_assignablep_impl(args, env) ⇒ Object 



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# File 'lib/rubylisp/prim_environment.rb', line 110

def self.environment_assignablep_impl(args, env)
  return Lisp::Debug.process_error("environment-assignable? requires an environment for it's first argument, received: #{args.car}", env) unless args.car.environment?
  return Lisp::Debug.process_error("environment-assignable? requires a symbol for it's second argument, received: #{args.cadr}", env) unless args.cadr.symbol?
  local_env = args.car.value
  binding = local_env.binding_for(args.cadr)
  Lisp::Boolean.with_value(!binding.nil?)
end