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