34 lines
965 B
Ruby
34 lines
965 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 self.position(object)
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pos = self.positions[object]
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if pos == nil
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str = "position accessed but not set, "
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str += "#{object.object_id.to_s(16)}\n"
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str += "for #{object.class} byte_length #{object.byte_length if object.respond_to?(:byte_length)} for #{object.inspect[0...100]}"
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raise str
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end
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pos
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end
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def self.set_position( object , 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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#puts "Setting #{pos} for #{self.class}"
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old = Positioned.positions[object]
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if old != nil and ((old - pos).abs > 10000)
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raise "position set again #{pos}!=#{old} for #{object}"
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end
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self.positions[object] = pos
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end
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end
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