Class: Dry::Configurable::Setting

Inherits:
Object
  • Object
show all
Defined in:
lib/dry/configurable/setting.rb

Overview

A defined setting.

Constant Summary collapse

OPTIONS = 
%i[default reader constructor mutable cloneable settings config_class].freeze
DEFAULT_CONSTRUCTOR = 
-> v { v }.freeze
MUTABLE_VALUE_TYPES = 
[Array, Hash, Set, Config].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, default:, constructor: DEFAULT_CONSTRUCTOR, children: EMPTY_ARRAY, **options) ⇒ Setting

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Setting.



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# File 'lib/dry/configurable/setting.rb', line 43

def initialize(
  name,
  default:,
  constructor: DEFAULT_CONSTRUCTOR,
  children: EMPTY_ARRAY,
  **options
)
  @name = name
  @default = default
  @mutable = children.any? || options.fetch(:mutable) {
    # Allow `cloneable` as an option alias for `mutable`
    options.fetch(:cloneable) { Setting.mutable_value?(default) }
  }
  @constructor = constructor
  @children = children
  @options = options
end

Instance Attribute Details

#children ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 32

def children
  @children
end

#constructor ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 29

def constructor
  @constructor
end

#default ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 23

def default
  @default
end

#mutable ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 26

def mutable
  @mutable
end

#name ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 20

def name
  @name
end

#options ⇒ Object (readonly) 



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# File 'lib/dry/configurable/setting.rb', line 35

def options
  @options
end

Class Method Details

.mutable_value?(value) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dry/configurable/setting.rb', line 38

def self.mutable_value?(value)
  MUTABLE_VALUE_TYPES.any? { |type| value.is_a?(type) }
end

Instance Method Details

#mutable? ⇒ Boolean Also known as: cloneable?

Returns:

  • (Boolean) 


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# File 'lib/dry/configurable/setting.rb', line 67

def mutable?
  mutable
end

#reader? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dry/configurable/setting.rb', line 62

def reader?
  options[:reader].equal?(true)
end

#to_value ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dry/configurable/setting.rb', line 73

def to_value
  if children.any?
    (options[:config_class] || Config).new(children)
  else
    value = default
    value = constructor.(value) unless value.eql?(Undefined)

    mutable? ? value.dup : value
  end
end