73 lines
2.0 KiB
Ruby
73 lines
2.0 KiB
Ruby
require_relative "meta_class"
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module Boot
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# class is mainly a list of functions with a name (for now)
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# layout of object is seperated into Layout
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class BootClass < Virtual::ObjectConstant
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def initialize name , context , super_class = :Object
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super()
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@context = context
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# class functions
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@functions = []
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@name = name.to_sym
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@super_class = super_class
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@meta_class = MetaClass.new(self)
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end
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attr_reader :name , :functions , :meta_class , :context , :super_class
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def add_function function
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raise "not a function #{function}" unless function.is_a? Virtual::Function
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raise "syserr " unless function.name.is_a? Symbol
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@functions << function
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end
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def get_function fname
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fname = fname.to_sym
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f = @functions.detect{ |f| f.name == fname }
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names = @functions.collect{|f| f.name }
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f
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end
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# get the function and if not found, try superclasses. raise error if not found
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def resolve_function name
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fun = get_function name
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unless fun or name == :Object
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supr = @context.object_space.get_or_create_class(@super_class)
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fun = supr.get_function name
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puts "#{supr.functions.collect(&:name)} for #{name} GOT #{fun.class}" if name == :index_of
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end
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raise "Method not found :#{name}, for #{inspect}" unless fun
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fun
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end
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def inspect
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"BootClass #{@name} < #{@super_class}:#{@functions.collect(&:name)}"
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end
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def to_s
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inspect
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end
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# Code interface follows. Note position is inheitted as is from Code
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# length of the class is the length of it's functions
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def length
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@functions.inject(0) {| sum , item | sum + item.length}
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end
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# linking functions
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def link_at( start , context)
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super
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@functions.each do |function|
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function.link_at(start , context)
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start += function.length
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end
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end
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# assemble functions
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def assemble( io )
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@functions.each do |function|
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function.assemble(io)
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end
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io
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end
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end
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end |