25 lines
855 B
Ruby
25 lines
855 B
Ruby
module Mom
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# The ReturnSequence models the return from a method.
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#
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# This involves the jump to the return address stored in the message, and
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# the reinstantiation of the previous message.
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#
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# The machine (mom) only ever "knows" one message, the current message.
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# Messages are a double linked list, calling involves going forward,
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# returning means going back.
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#
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# The return value of the current message is transferred into the return value of the
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# callers return value during the swap of messages, and just before the jump.
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#
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# The callers perspective of a call is the magical apperance of a return_value
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# in it's message at the instruction after the call.
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#
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# The instruction is not parameterized as it translates to a constant
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# set of lower level instructions.
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#
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class ReturnSequence < Instruction
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end
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end
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