41 lines
1.0 KiB
Ruby
41 lines
1.0 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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keep Virtual.machine.space.get_init
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remove_remaining
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end
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def keep 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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keep code.method if code.is_a? Register::FunctionCall
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end
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end
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end
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def remove_remaining
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@gonners.each do |method|
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next if(method.name == :plus)
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method.for_class.remove_instance_method method.name
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end
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end
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end
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end
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