rubyx/lib/vm/boot_class.rb
2014-06-03 22:16:57 +03:00

74 lines
2.0 KiB
Ruby

require_relative "meta_class"
module Vm
# class is mainly a list of functions with a name (for now)
# layout of object is seperated into Layout
class BootClass < Code
def initialize name , context , super_class = :Object
super()
@context = context
# class functions
@functions = []
@name = name.to_sym
@super_class = super_class
@meta_class = MetaClass.new(self)
end
attr_reader :name , :functions , :meta_class
def add_function function
raise "not a function #{function}" unless function.is_a? Function
raise "syserr " unless function.name.is_a? Symbol
@functions << function
end
def get_function fname
fname = fname.to_sym
f = @functions.detect{ |f| f.name == fname }
names = @functions.collect{|f| f.name }
f
end
# way of creating new functions that have not been parsed.
def get_or_create_function name
fun = get_function name
unless fun or name == :Object
supr = @context.object_space.get_or_create_class(@super_class)
fun = supr.get_function name
puts "#{supr.functions.collect(&:name)} for #{name} GOT #{fun.class}" if name == :index_of
end
unless fun
fun = Core::Kernel.send(name , @context)
return nil if fun == nil
@functions << fun
end
fun
end
def inspect
"BootClass #{@name} , super #{@super_class} #{@functions.length} functions"
end
# Code interface follows. Note position is inheitted as is from Code
# length of the class is the length of it's functions
def length
@functions.inject(0) {| sum , item | sum + item.length}
end
# linking functions
def link_at( start , context)
super
@functions.each do |function|
function.link_at(start , context)
start += function.length
end
end
# assemble functions
def assemble( io )
@functions.each do |function|
function.assemble(io)
end
io
end
end
end