# File lib/spec/matchers/extensions/instance_exec.rb, line 7 def instance_exec(*args, &block) begin orig_critical, Thread.critical = Thread.critical, true n = 0 n += 1 while respond_to?(method_name="__instance_exec#{n}") InstanceExecHelper.module_eval{ define_method(method_name, &block) } ensure Thread.critical = orig_critical end begin return send(method_name, *args) ensure InstanceExecHelper.module_eval{ remove_method(method_name) } rescue nil end end