31 lines
895 B
Ruby
31 lines
895 B
Ruby
# Helper module that extract position attribute.
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module Positioned
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@@positions = {}
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def self.positions
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@@positions
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end
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def position
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pos = Positioned.positions[self]
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if pos == nil
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str = "position accessed but not set, "
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str += "#{Register.machine.objects.has_key?(self.object_id)}, at #{self.object_id.to_s(16)}\n"
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raise str + "for #{self.class} byte_length #{byte_length} for #{self.inspect[0...100]}"
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end
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pos
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end
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def set_position( pos )
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raise "Position must be number not :#{pos}:" unless pos.is_a?(Numeric)
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# resetting of position used to be error, but since relink and dynamic instruction size it is ok.
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# in measures (of 32)
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old = Positioned.positions[self]
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if old != nil and ((old - pos).abs > 10000)
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raise "position set again #{pos}!=#{old} for #{self}"
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end
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Positioned.positions[self] = pos
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end
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end
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