Class: Ruleset

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

Direct Known Subclasses

StrongRuleset

Defined Under Namespace

Classes: EmptyRuleset

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(subject = nil) ⇒ Ruleset

Returns a new instance of Ruleset.

Raises:



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# File 'lib/patterns/ruleset.rb', line 20

def initialize(subject = nil)
  raise EmptyRuleset if self.class.rules.empty?

  @rules = self.class.rules.map { |rule| rule.new(subject) }
end

Class Attribute Details

.rule_names ⇒ Object

Returns the value of attribute rule_names.



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# File 'lib/patterns/ruleset.rb', line 5

def rule_names
  @rule_names
end

Class Method Details

.add_rule(rule_name) ⇒ Object 



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# File 'lib/patterns/ruleset.rb', line 14

def self.add_rule(rule_name)
  self.rule_names ||= []
  self.rule_names << rule_name.to_sym
  self
end

.rules ⇒ Object 



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# File 'lib/patterns/ruleset.rb', line 8

def self.rules
  (rule_names || []).map do |rule_name|
    rule_name.to_s.classify.constantize
  end
end

Instance Method Details

#applicable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/patterns/ruleset.rb', line 38

def applicable?
  !not_applicable?
end

#each(&block) ⇒ Object 



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# File 'lib/patterns/ruleset.rb', line 54

def each(&block)
  return enum_for(:each) unless block_given?

  rules.each do |rule_or_ruleset|
    if rule_or_ruleset.is_a?(Ruleset)
      rule_or_ruleset.each(&block)
    else
      yield rule_or_ruleset
    end
  end
end

#forceable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/patterns/ruleset.rb', line 46

def forceable?
  rules.all? do |rule|
    rule.forceable? ||
      rule.not_applicable? ||
      rule.satisfied?
  end
end

#not_applicable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/patterns/ruleset.rb', line 42

def not_applicable?
  rules.all?(&:not_applicable?)
end

#not_satisfied? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/patterns/ruleset.rb', line 34

def not_satisfied?
  !satisfied?
end

#satisfied?(force: false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/patterns/ruleset.rb', line 26

def satisfied?(force: false)
  rules.all? do |rule|
    rule.satisfied? ||
      rule.not_applicable? ||
      (force && rule.forceable?)
  end
end