method

instance_exec

1.3.1 - Show latest stable - Class: Spec::Matchers::InstanceExec

instance_exec(*args, &block)

public

based on Bounded Spec InstanceExec (Mauricio Fernandez) http://eigenclass.org/hiki/bounded+space+instance_exec

uses singleton_class of matcher instead of global InstanceExecHelper module
this keeps it scoped to this class only, which is the only place we need it
only necessary for ruby 1.8.6

# File lib/spec/extensions/instance_exec.rb, line 12
        def instance_exec(*args, &block)
          singleton_class = (class << self; self; end)
          begin
            orig_critical, Thread.critical = Thread.critical, true
            n = 0
            n += 1 while respond_to?(method_name="__instance_exec#{n}")
            singleton_class.module_eval{ define_method(:__instance_exec, &block) }
          ensure
            Thread.critical = orig_critical
          end
          begin
            return send(:__instance_exec, *args)
          ensure
            singleton_class.module_eval{ remove_method(:__instance_exec) } rescue nil
          end
        end

instance_exec

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