25d7b8bd83
these types are only needed to debug and can be gotten from the method (also in the mesage) just saving the 6 instructions for every call This was made possible through previous commits on fake_memory access
45 lines
1.5 KiB
Ruby
45 lines
1.5 KiB
Ruby
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# A NamedList is used to store local variables and arguments when calling methods.
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# Also temporary variables, which are local variables named by the system
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# The items are named (and typed) by the objects type instance. In effect the
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# variables are like instance variables
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# A Message with is arguments, and a NamedList make up the two sides of message passing:
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# A Message (see details there) is created by the caller and control is transferred
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# A NamedList is created by the receiver
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# PS: it turns out that both messages and named_lists are created at compile, not run-time, and
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# just constantly reused. Each message has two named_list object ready and is also linked
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# to the next message.
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# The better way to say above is that a message is *used* by the caller, and a named_list
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# by the callee.
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# Also at runtime Messages and NamedLists remain completely "normal" objects.
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# Ie they have have type and instances and so on.*
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# Which resolves the dichotomy of objects on the stack or heap. Sama sama.
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#
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# *Alas the type for each call instance is unique.
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#
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module Parfait
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class NamedList < Object
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attr :type
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def self.memory_size
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16
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end
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def to_s
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str = "NamedList len= #{get_length}"
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str += " at #{Risc::Position.get(self)}" if Risc::Position.set?(self)
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end
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def get_length
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get_type.get_length - 1
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end
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def self.type_for( arguments )
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my_class = Parfait.object_space.classes[:NamedList]
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Type.for_hash( my_class , {type: my_class.instance_type}.merge(arguments))
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end
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end
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end
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