42 lines
1.8 KiB
Ruby
42 lines
1.8 KiB
Ruby
module Virtual
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# This implements the send logic
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# Send is so complicated that we actually code it in ruby and stick it in
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# That off course opens up an endless loop possibility that we stop by
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# implementing Class and Module methods
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# Note: I find it slightly unsemetrical that the NewMessage object needs to be created before this instruction
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# This is because all expressions create a (return) value and that return value is overwritten by the next
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# expression unless saved. And since the message is the place to save it it needs to exist. qed
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class SendImplementation
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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? MessageSend
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new_codes = [ ]
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ref = code.me
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raise "only refs implemented #{me.inspect}" unless ( ref.type == Reference)
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if(ref.value)
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me = ref.value
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if( me.is_a? BootClass )
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raise "unimplemented #{code}"
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elsif( me.is_a? ObjectConstant )
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# get the function from my class. easy peasy
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method = me.clazz.get_instance_method(code.name)
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raise "Method not implemented #{clazz.name}.#{code.name}" unless method
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new_codes << FunctionCall.new( method )
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else
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# note: this is the current view: call internal send, even the method name says else
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# but send is "special" and accesses the internal method name and resolves.
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kernel = Virtual::BootSpace.space.get_or_create_class(:Kernel)
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method = kernel.get_instance_method(:__send)
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new_codes << FunctionCall.new( method )
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raise "unimplemented #{code}"
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end
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else
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raise "not constant/ known object for send #{ref.inspect}"
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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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end
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