26 lines
909 B
Ruby
26 lines
909 B
Ruby
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module Virtual
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# class for Set instructions, A set is basically a mem move.
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# to and from are indexes into the known objects(frame,message,self and new_message), these are represented as slots
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# (see there)
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# from may be a Constant (Object,Integer,String,Class)
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class Set < Instruction
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def initialize to , from
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@to = to
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# hard to find afterwards where it came from, so ensure it doesn't happen
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raise "From must be slot or constant, not symbol #{from}" if from.is_a? Symbol
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@from = from
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end
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attr_reader :to , :from
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end
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# Get a instance variable by _name_ . So we have to resolve the name to an index to trnsform into a Slot
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# The slot may the be used in a set on left or right hand. The transformation is done by GetImplementation
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class InstanceGet < Instruction
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def initialize name
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@name = name.to_sym
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end
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attr_reader :name
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end
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end
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