35 lines
703 B
Ruby
35 lines
703 B
Ruby
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module Register
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# A label is a placeholder for it's next Instruction
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# It's function is not to turn into code, but to be a valid brnch target
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#
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# So branches and Labels are pairs, fan out, fan in
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#
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#
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class Label < Instruction
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def initialize source , name , nekst = nil
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super(source , nekst)
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@name = name
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end
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attr_reader :name
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def to_s
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"Label: #{@name} (#{self.next.class})"
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end
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def to_ac labels = []
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return [] if labels.include?(self)
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labels << self
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self.next.to_ac(labels)
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end
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def length labels = []
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return 0 if labels.include?(self)
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labels << self
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1 + self.next.length(labels)
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end
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end
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end
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