24 lines
845 B
Ruby
24 lines
845 B
Ruby
module Virtual
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class EnterImplementation
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def run block
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block.codes.dup.each do |code|
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next unless code.is_a? Virtual::MethodEnter
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new_codes = []
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# save return register to the message at instance return_address
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new_codes << Register.save_return(:message , :return_address)
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# set the method instance on message, have to load first
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tmp = Register.tmp_reg
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new_codes << Register::LoadConstant.new( code.method , tmp )
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new_codes << Register.set_slot( tmp , :message , :method)
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# and create a new frame if needed
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unless code.method.locals.empty? and code.method.tmps.empty?
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new_codes << Virtual::NewFrame.new
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end
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block.replace(code , new_codes )
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end
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end
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end
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Virtual.machine.add_pass "Virtual::EnterImplementation"
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end
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