39 lines
1.4 KiB
Ruby
39 lines
1.4 KiB
Ruby
module Mom
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# As reminder: a statically resolved call (the simplest one) becomes three Mom Instructions.
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# Ie: MessageSetup,ArgumentTransfer,SimpleCall
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#
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# MessageSetup does Setup before a call can be made, acquiring and filling the message
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# basically.
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#
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# With the current design the next message is already ready (hardwired as a linked list),
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# so nothing to be done there.
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# (but this does not account for continuations or closures and so will have to be changed)
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#
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# But we do need to set the message name to the called method's name,
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# and also set the arg and local types on the new message, currently for debugging
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# but later for dynamic checking
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#
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class MessageSetup < Instruction
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attr_reader :method
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def initialize(method)
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@method = method
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end
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# Move method name, frame and arguemnt types from the method to the neext_message
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# Assumes the message is ready, see class description
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def to_risc(compiler)
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name_move = SlotLoad.new( [:message , :next_message,:name] , [method , :name],self)
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moves = name_move.to_risc(compiler)
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args_move = SlotLoad.new( [:message , :next_message, :arguments,:type] , [method , :arguments, :type],self)
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moves << args_move.to_risc(compiler)
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type_move = SlotLoad.new( [:message , :next_message, :frame,:type] , [method , :frame,:type],self)
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moves << type_move.to_risc(compiler)
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end
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end
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end
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