30 lines
1012 B
Ruby
30 lines
1012 B
Ruby
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module Mom
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# Transering the arguments from the current frame into the next frame
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#
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# This could be _done_ at this level, and in fact used to be.
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# The instructions was introduced to
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# 1. make optimisations easier
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# 2. localise the inevitable change
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#
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# 1. The optimal implementation for this loads old and new frames into registers
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# and does a whole bunch of transfers
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# But if we do individual SlotMoves here, each one has to load the frames,
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# thus making advanced analysis/optimisation neccessary to achieve the same effect.
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#
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# 2. Closures will have to have access to variables after the frame goes out of scope
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# and in fact be able to change the parents variables. This design does not allow for
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# this, and so will have to be change in the not so distant future.
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#
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class ArgumentTransfer < Instruction
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attr_reader :receiver , :arguments
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def initialize( receiver,arguments )
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@receiver , @arguments = receiver , arguments
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end
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end
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end
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