29 lines
1.3 KiB
Ruby
29 lines
1.3 KiB
Ruby
module Virtual
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module Compiler
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# operators are really function calls
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# call_site - attr_reader :name, :args , :receiver
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def self.compile_callsite expession , method
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me = Compiler.compile( expession.receiver , method )
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method.add_code Virtual::NewMessage.new
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method.add_code Virtual::Set.new(Virtual::NewSelf.new(me.type), me)
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method.add_code Virtual::Set.new(Virtual::NewName.new(), Virtual::StringConstant.new(expession.name))
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compiled_args = []
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expession.args.each_with_index do |arg , i|
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#compile in the running method, ie before passing control
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val = Compiler.compile( arg , method)
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# move the compiled value to it's slot in the new message
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to = Virtual::NewMessageSlot.new(i ,val.type , val)
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# (doing this immediately, not after the loop, so if it's a return it won't get overwritten)
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method.add_code Virtual::Set.new(to , val )
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compiled_args << to
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end
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method.add_code Virtual::MessageSend.new(expession.name , me , compiled_args) #and pass control
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# the effect of the method is that the NewMessage Return slot will be filled, return it
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# (this is what is moved _inside_ above loop for such expressions that are calls (or constants))
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Virtual::Return.new( method.return_type )
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end
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end
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end
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