Module: Lite::Containers::AvlTree::Interfaces::KeyExtractionStrategy::Abstract

Included in:
Explicit, Implicit
Defined in:
lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb

Class Method Summary collapse

Class Method Details

.enforce_exclusion(mod, strategy) ⇒ Object 



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# File 'lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb', line 24

def self.enforce_exclusion(mod, strategy)
  mod.define_singleton_method :included do |base|
    Abstract.enforce_exclusion!(base, strategy)
    super(base)
  end
end

.enforce_exclusion!(base, strategy) ⇒ Object 



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# File 'lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb', line 31

def self.enforce_exclusion!(base, strategy)
  conflicts = Abstract
              .registry
              .select { |candidate| strategy != candidate && base < candidate }
              .map { |conflict| conflict.name.split('::').last }

  if !conflicts.empty?
    raise Error, "Key extraction strategy conflict: #{conflicts.join(', ')}"
  elsif base.is_a?(Module)
    Abstract.enforce_exclusion(base, strategy)
  end
end

.included(base) ⇒ Object 



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# File 'lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb', line 11

def self.included(base)
  register(base)
  enforce_exclusion(base, base)
end

.register(strategy) ⇒ Object 



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# File 'lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb', line 16

def self.register(strategy)
  registry << strategy
end

.registry ⇒ Object 



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# File 'lib/lite/containers/avl_tree/interfaces/key_extraction_strategy/abstract.rb', line 20

def self.registry
  @registry ||= Set.new
end