79 lines
2.4 KiB
Ruby
79 lines
2.4 KiB
Ruby
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# Class derives from and derives most of it's functionality (that you would associate with a class)
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# from there
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# class is mainly a list of methods with a name (for now)
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# layout of object is seperated into Layout
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# A Class is a module that can be instantiated
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# An Object carries the data for the instance variables it has
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# The Layout lists the names of the instance variables
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# The class keeps a list of instance methods, these have a name and code
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require_relative "meta_class"
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module Parfait
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class Class < Module
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def initialize name , super_class = nil
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super()
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# class methods
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@instance_methods = []
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@name = name.to_sym
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@super_class = super_class
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@meta_class = Virtual::MetaClass.new(self)
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@object_layout = []
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end
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attr_reader :name , :instance_methods , :meta_class , :context , :super_class_name
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def add_instance_method method
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raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Virtual::CompiledMethod
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raise "syserr " unless method.name.is_a? Symbol
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@instance_methods << method
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end
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# this needs to be done during booting as we can't have all the classes and superclassses
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# instantiated. By that logic it should maybe be part of vm rather.
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# On the other hand vague plans to load the hierachy from sof exist, so for now...
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def set_super_class sup
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@super_class = sup
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end
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def set_instance_names list
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@object_layout = Layout.new_object
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@object_layout.set_names list
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end
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def get_instance_method fname
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fname = fname.to_sym
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@instance_methods.detect{ |fun| fun.name == fname }
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end
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# get the method and if not found, try superclasses. raise error if not found
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def resolve_method m_name
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method = get_instance_method(m_name)
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unless method
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unless( @name == "Object" )
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supr = Space.space.get_class_by_name(@super_class_name)
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method = supr.resolve_method(m_name)
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end
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end
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raise "Method not found #{m_name}, for #{@name}" unless method
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method
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end
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@@CLAZZ = { :names => [:name , :super_class_name , :instance_methods] , :types => [Virtual::Reference,Virtual::Reference,Virtual::Reference]}
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def layout
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@@CLAZZ
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end
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def mem_length
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padded_words(3)
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end
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def to_s
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inspect[0...300]
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end
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# ruby 2.1 list (just for reference, keep at bottom)
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#:allocate, :new, :superclass
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end
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end
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