57 lines
1.5 KiB
Ruby
57 lines
1.5 KiB
Ruby
#
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#
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# In rubyx everything truely is an object. (most smalltalk/ruby systems use a union
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# for integers/pointers that are called objects, but are really very different)
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#
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# Objects have type as their first member. No exception.
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#
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# So where is the data? In DataObjects. DataObjects are opague carriers of data.
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# Opague to rubyx that is. There is no way to get at it or pass the data around.
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#
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# To use Data, Risc instructions have to be used. Luckily there is not soo much one
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# actually wants to do with data, moving it between DataObject , comparing and
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# logical and math operation that are bundled into the OperatorInstruction.
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#
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# For safe access the access code needs to know the length of the data, which is
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# encoded in the class/type name. Ie An Integer derives from Data4, which is 4 long
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# ( one for the type, one for the next, one word for the integer and currently still a marker)
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#
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# DataObjects still have a type, and so can have objects before the data starts
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#
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# A marker class
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module Parfait
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class DataObject < Object
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def self.type_length
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raise "called " + self.to_s
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end
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def padded_length
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self.class.memory_size * 4
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end
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def data_length
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self.class.memory_size
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end
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end
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class Data4 < DataObject
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def self.memory_size
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4
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end
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end
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class Data8 < DataObject
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def self.memory_size
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8
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end
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end
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class Data16 < DataObject
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def self.memory_size
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16
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end
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end
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class Data32 < DataObject
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def self.memory_size
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32
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end
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end
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end
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