Class: Hiera::RecursiveGuard

Inherits:
Object
  • Object
show all
Defined in:
lib/hiera/recursive_guard.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RecursiveGuard

Returns a new instance of RecursiveGuard.



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# File 'lib/hiera/recursive_guard.rb', line 7

def initialize
  @seen = []
end

Instance Method Details

#check(value, &block) ⇒ Object 



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# File 'lib/hiera/recursive_guard.rb', line 11

def check(value, &block)
  if @seen.include?(value)
    raise Hiera::InterpolationLoop, "Lookup recursion detected in [#{@seen.join(', ')}]"
  end
  @seen.push(value)
  ret = yield
  @seen.pop
  ret
end