37 lines
944 B
Ruby
37 lines
944 B
Ruby
module SlotLanguage
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# A SlotMaker makes Slots. A Slot s the central SlotMachines description of a
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# variable in an object. This Language level "Maker" holds the information
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# (names of instance variables) to be able to create the Slot instance
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#
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# In the SlotLanguage this is used in the Assignment. Just as a Slotload stores
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# two slots to define what is loaded where, the Assignment, that creates a SlotLoad,
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# uses two SlotMakers.
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class SlotMaker
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# stores the (instance) names that allow us to create a Slot
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attr_reader :names
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def initialize(names)
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case names
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when Array
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@names = names
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when nil
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raise "No names given"
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else
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@names = [names]
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end
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end
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def add_slot_name(name)
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@names << name
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end
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def to_slot(compiler)
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SlotMachine::Slot.for(:message , names)
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end
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def to_s
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"message." + names.join(",")
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end
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end
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end
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