Torsten
088017bc05
Object and Constant similarity are coming more into focus. Will unite after the merge
51 lines
1.7 KiB
Ruby
51 lines
1.7 KiB
Ruby
module SlotMachine
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class SlottedObject < Slotted
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attr_reader :known_object
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def initialize( object , slots)
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super(slots)
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@known_object = object
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raise "Not known #{slots}" unless object
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end
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def known_name
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known_object.class.short_name
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end
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# load the slots into a register
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# the code is added to compiler
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# the register returned
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def to_register(compiler, source)
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type = known_object.get_type
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raise "not sym for #{known_object}" if type.is_a?(String)
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last = Risc.load_constant(source, known_object)
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compiler.add_code last
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if slots_length > 1
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last = Risc.slot_to_reg( source , last.register ,slots.name)
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compiler.add_code(last)
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end
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if slots_length > 2
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last = Risc.slot_to_reg( source , last.register , slots.next_slot.name )
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compiler.add_code(last)
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end
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if slots_length > 3
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raise "3 slots only for type #{slots}" unless slots.next_slot.next_slot.name == :type
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last = Risc.slot_to_reg( source , last.register , slots.next_slot.name )
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compiler.add_code(last)
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end
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return last.register
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end
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# Note: this is the left hand case, the right hand being to_register
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# They are very similar (apart from the final reg_to_slot here) and should
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# most likely be united
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def reduce_and_load(const_reg , compiler , original_source )
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raise "only cache" unless known_object.is_a?( Parfait::CacheEntry)
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left = compiler.use_reg( :CacheEntry )
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compiler.add_code Risc.load_constant(original_source, known_object , left)
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compiler.add_code Risc.reg_to_slot(original_source, const_reg , left, slots.name)
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end
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end
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end
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