Class: KBS::BetaMemory

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BetaMemory

Returns a new instance of BetaMemory.



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# File 'lib/kbs/beta_memory.rb', line 8

def initialize
  @tokens = []
  @successors = []
  @linked = true
end

Instance Attribute Details

#linked ⇒ Object (readonly)

Returns the value of attribute linked.



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# File 'lib/kbs/beta_memory.rb', line 6

def linked
  @linked
end

#successors ⇒ Object

Returns the value of attribute successors.



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# File 'lib/kbs/beta_memory.rb', line 5

def successors
  @successors
end

#tokens ⇒ Object

Returns the value of attribute tokens.



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# File 'lib/kbs/beta_memory.rb', line 5

def tokens
  @tokens
end

Instance Method Details

#activate(token) ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 24

def activate(token)
  add_token(token)
  @successors.each do |s|
    if s.respond_to?(:left_activate)
      s.left_activate(token)
    elsif s.respond_to?(:activate)
      s.activate(token)
    end
  end
end

#add_token(token) ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 46

def add_token(token)
  @tokens << token
  unlink! if @tokens.empty?
  relink! if @tokens.size == 1
end

#deactivate(token) ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 35

def deactivate(token)
  remove_token(token)
  @successors.each do |s|
    if s.respond_to?(:left_deactivate)
      s.left_deactivate(token)
    elsif s.respond_to?(:deactivate)
      s.deactivate(token)
    end
  end
end

#relink! ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 19

def relink!
  @linked = true
  @successors.each { |s| s.left_relink! if s.respond_to?(:left_relink!) }
end

#remove_token(token) ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 52

def remove_token(token)
  @tokens.delete(token)
  unlink! if @tokens.empty?
end

#unlink! ⇒ Object 



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# File 'lib/kbs/beta_memory.rb', line 14

def unlink!
  @linked = false
  @successors.each { |s| s.left_unlink! if s.respond_to?(:left_unlink!) }
end