46 lines
1.2 KiB
Ruby
46 lines
1.2 KiB
Ruby
module Virtual
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# Remove all functions that are not called
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# Not called is approximated by the fact that the method name doesn't show up
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# in any function reachable from main
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class Minimizer
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def run
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@gonners = []
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Parfait::Space.object_space.classes.values.each do |c|
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c.instance_methods.each do |f|
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@gonners << f
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end
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end
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init = Parfait::Space.object_space.get_class_by_name(:Kernel).get_instance_method :__init__
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remove init
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dump_remaining
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end
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def remove function
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index = @gonners.index function
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unless index
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puts "function was already removed #{function.name}"
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return
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end
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#puts "stayer #{function.name}"
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@gonners.delete function
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function.source.blocks.each do |block|
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block.codes.each do |code|
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if code.is_a? Virtual::MessageSend
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@gonners.dup.each do |stay|
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remove stay if(stay.name == code.name)
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end
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end
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remove code.method if code.is_a? Virtual::MethodCall
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end
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end
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end
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def dump_remaining
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@gonners.each do |method|
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method.for_class.remove_instance_method method
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end
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end
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end
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end
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