26 lines
1.2 KiB
Ruby
26 lines
1.2 KiB
Ruby
module Ast
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# operators are really function calls
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class CallSiteExpression < Expression
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# attr_reader :name, :args , :receiver
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def compile method , message
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me = receiver.compile( method, message )
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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(), name)
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compiled_args = []
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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 = arg.compile( method, message)
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compiled_args << val
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# move the compiled value to it's slot in the new message
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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(Virtual::NewMessageSlot.new(i ,val.type ) , val )
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end
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method.add_code Virtual::MessageSend.new(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::NewReturn.new( method.return_type )
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end
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end
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end |