rubyx/stash/slot.rb

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module Virtual
# A slot is a slot in an object. It is the storage location for a value.
# (Remember, values are typed)
# From a memory perspective a slot is an index into an array (the object)
# The mapping into arrays is a straightforward matter, but happens in the
# next level down, the register machine.
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# Four known objects exist and those correspond to subclasses:
# - the message that has been received: MessageSlot
# - the frame of the method that is executing (local variables): FrameSlot
# - self as an object: SelfsSlot
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# - a message that will be sent, NewMessageSlot
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# additionally frame, self and return are slots in Message and NewMessage
# Slot has a lot of small subclasses
# Names for the slots avoid indexes
end