# File lib/backports/tools/arguments.rb, line 6 def self.coerce_to(obj, cls, meth) return obj if obj.kind_of?(cls) begin ret = obj.__send__(meth) rescue Exception => e raise TypeError, "Coercion error: #{obj.inspect}.#{meth} => #{cls} failed:\n" \ "(#{e.message})" end raise TypeError, "Coercion error: obj.#{meth} did NOT return a #{cls} (was #{ret.class})" unless ret.kind_of? cls ret end