Class: ConfigDSL::LazyValue

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(block, args = [], options = {}) ⇒ LazyValue

Returns a new instance of LazyValue.



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# File 'lib/configdsl.rb', line 225

def initialize(block, args = [], options = {})
  @block = block
  @args = args
  @options = self.class.default_options.merge(options)
  @cached = false
end

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args.



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# File 'lib/configdsl.rb', line 223

def args
  @args
end

#block ⇒ Object (readonly)

Returns the value of attribute block.



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# File 'lib/configdsl.rb', line 223

def block
  @block
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/configdsl.rb', line 223

def options
  @options
end

Class Method Details

.default_options ⇒ Object 



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# File 'lib/configdsl.rb', line 217

def self.default_options
  {
    caching: true        
  }
end

Instance Method Details

#cached? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/configdsl.rb', line 251

def cached?
  @cached
end

#caching? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/configdsl.rb', line 242

def caching?
  !!options[:caching]
end

#flush_cache! ⇒ Object 



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# File 'lib/configdsl.rb', line 246

def flush_cache!
  @cache = nil # clean pointer so that GC can do it's work immediately
  @cached = true
end

#value(new_args = nil) ⇒ Object 



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# File 'lib/configdsl.rb', line 232

def value(new_args = nil)
  return @cache if caching? && cached?
  value = block.call(*(new_args ? new_args : args))
  if caching?
    @cache = value
    @cached = true
  end
  value
end