Module: IceNine::RecursionGuard

Defined in:
lib/ice_nine/support/recursion_guard.rb

Overview

Protect against infinite recursion

Class Method Summary collapse

Class Method Details

.guard(object_id) ⇒ Object

Guard against recursively calling a block with the same object

Examples:

IceNine::RecursionGuard.guard(object_id) do
  logic_which_may_recursively_call_the_containing_method
end

Parameters:

  • object_id (Integer)

Returns:

  • (Object) 


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# File 'lib/ice_nine/support/recursion_guard.rb', line 20

def self.guard(object_id)
  objects = guarded_objects(caller.first)
  return if objects.include?(object_id)
  begin
    objects << object_id
    yield
  ensure
    objects.delete(object_id)
  end
end