71 lines
2.0 KiB
Ruby
71 lines
2.0 KiB
Ruby
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# A message is what is created when a message is sent. Args and stuff are packed up in to a
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# Message and the Message is activated (by swapping it into the machine).
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# Part of the housekeeping (see attributes) makes messages a double linked list (next_message and
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# caller) , and maybe surprisingly this means that we can create all messages at compile-time
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# and link them up and never have to touch that list again.
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# All the args and receiver data changes, but the list of messages stays constant
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# (a pleasant stupor while we ignore closures and longer extended frames ).
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module Parfait
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class Message < Object
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attr_reader :next_message, :receiver
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attr_reader :return_address, :return_value
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attr_reader :caller , :method
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attr_reader :arguments_given, :arg1 , :arg2, :arg3, :arg4, :arg5, :arg6
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attr_reader :locals_used, :local1 , :local2, :local3, :local4, :local5, :local6 ,:local7
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attr_reader :local8 , :local9 ,:local10, :local11 , :local12, :local13, :local14
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def self.type_length
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30
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end
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def self.memory_size
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32
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end
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def self.args_start_at
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Parfait.object_space.get_type_by_class_name(:Message).variable_index(:arguments_given)
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end
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def self.locals_start_at
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Parfait.object_space.get_type_by_class_name(:Message).variable_index(:locals_used)
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end
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def initialize( )
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super()
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@locals_used = Parfait::Integer.new(0)
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@arguments_given = Parfait::Integer.new(0)
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end
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public :initialize
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def set_receiver(rec)
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@receiver = rec
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end
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def set_caller(caller)
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@caller = caller
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end
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def get_type_for(name)
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index = @type.get_index(name)
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get_at(index)
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end
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def method_name
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return "" unless @method
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return "" unless @method == NilClass
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@method.name
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end
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def to_s
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"Message:#{method_name}(#{@arguments_given})"
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end
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def _set_next_message(nekst)
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@next_message = nekst
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end
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def _set_caller(prev)
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@caller = prev
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end
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end
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end
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