Class: Object

Inherits:
BasicObject
Includes:
InstanceExecHelper
Defined in:
lib/cucumber/core_ext/instance_exec.rb

Defined Under Namespace

Modules: InstanceExecHelper

Instance Method Summary collapse

Instance Method Details

#cucumber_instance_exec(check_arity, pseudo_method, *args, &block) ⇒ Object 



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# File 'lib/cucumber/core_ext/instance_exec.rb', line 9

def cucumber_instance_exec(check_arity, pseudo_method, *args, &block)
  arity = block.arity
  arity = 0 if arity == -1
  cucumber_run_with_backtrace_filtering(pseudo_method) do
    if check_arity && args.length != arity
      instance_exec do
        raise Cucumber::ArityMismatchError.new("expected #{arity} block argument(s), got #{args.length}")
      end
    else
      instance_exec(*args, &block)
    end
  end
end

#cucumber_run_with_backtrace_filtering(pseudo_method) ⇒ Object 



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# File 'lib/cucumber/core_ext/instance_exec.rb', line 23

def cucumber_run_with_backtrace_filtering(pseudo_method)
  begin
    yield
  rescue Exception => e
    instance_exec_invocation_line = "#{__FILE__}:#{__LINE__ - 2}:in `cucumber_run_with_backtrace_filtering'"
    Exception.cucumber_strip_backtrace!((e.backtrace || []), instance_exec_invocation_line, pseudo_method)
    raise e
  end
end

#instance_exec(*args, &block) ⇒ Object 



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# File 'lib/cucumber/core_ext/instance_exec.rb', line 37

def instance_exec(*args, &block)
  begin
    old_critical, Thread.critical = Thread.critical, true
    n = 0
    n += 1 while respond_to?(mname="__instance_exec#{n}")
    InstanceExecHelper.module_eval{ define_method(mname, &block) }
  ensure
    Thread.critical = old_critical
  end
  begin
    ret = send(mname, *args)
  ensure
    InstanceExecHelper.module_eval{ remove_method(mname) } rescue nil
  end
  ret
end