87 lines
3.7 KiB
Ruby
87 lines
3.7 KiB
Ruby
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module Virtual
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class Machine
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# The general idea is that compiling is creating an object graph. Functionally
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# one tends to think of methods, and that is complicated enough, sure.
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# but for an object system the graph includes classes and all instance variables
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#
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# And so we have a chicken and egg problem. At the end of the function we want to have a
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# working Space object
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# But that has instance variables (List and Dictionary) and off course a class.
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# Or more precisely in salama, a Layout, that points to a class.
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# So we need a Layout, but that has Layout and Class too. hmmm
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#
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# The way out is to build empty shell objects and stuff the neccessary data into them
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# (not use the normal initialize way)
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def boot_parfait!
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@space = Parfait::Space.new_object
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object_class = Parfait::Class.new_object "Parfait::Object"
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space_class = Parfait::Class.new_object "Parfait::Space" , object_class
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space_layout = Parfait::Layout.new_object space_class
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puts "Space #{space.get_layout}"
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end
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def boot_classes!
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puts "BOOT"
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values = [ "Integer" , "Object" , "Value" , "Kernel"]
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rest = ["Word" , "Class" , "Dictionary" , "Space" , "List", "Layout"]
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(values + rest).each { |cl| @space.create_class(cl) }
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value_class = @space.get_class_by_name "Value"
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@space.get_class_by_name("Integer").set_super_class( value_class )
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object_class = @space.get_class_by_name("Object")
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object_class.set_super_class( value_class )
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rest.each do |name|
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cl = @space.get_class_by_name( name )
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cl.set_super_class(object_class)
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end
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boot_layouts!
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end
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def boot_layouts!
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end
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# boot the classes, ie create a minimal set of classes with a minimal set of functions
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# minimal means only that which can not be coded in ruby
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# CompiledMethods are grabbed from respective modules by sending the method name. This should return the
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# implementation of the method (ie a method object), not actually try to implement it (as that's impossible in ruby)
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def boot_functions!
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@space = Parfait::Space.new
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boot_classes!
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# very fiddly chicken 'n egg problem. Functions need to be in the right order, and in fact we
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# have to define some dummies, just for the other to compile
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# TODO: go through the virtual parfait layer and adjust function names to what they really are
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obj = @space.get_class_by_name "Object"
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[:index_of , :_get_instance_variable , :_set_instance_variable].each do |f|
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obj.add_instance_method Builtin::Object.send(f , nil)
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end
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obj = @space.get_class_by_name "Kernel"
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# create main first, __init__ calls it
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@main = Builtin::Kernel.send(:main , @context)
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obj.add_instance_method @main
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underscore_init = Builtin::Kernel.send(:__init__ ,nil) #store , so we don't have to resolve it below
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obj.add_instance_method underscore_init
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[:putstring,:exit,:__send].each do |f|
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obj.add_instance_method Builtin::Kernel.send(f , nil)
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end
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# and the @init block in turn _jumps_ to __init__
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# the point of which is that by the time main executes, all is "normal"
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@init = Block.new(:_init_ , nil )
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@init.add_code(Register::RegisterMain.new(underscore_init))
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obj = @space.get_class_by_name "Integer"
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[:putint,:fibo].each do |f|
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obj.add_instance_method Builtin::Integer.send(f , nil)
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end
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obj = @space.get_class_by_name "Word"
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[:get , :set , :puts].each do |f|
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obj.add_instance_method Builtin::Word.send(f , nil)
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end
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obj = space.get_class_by_name "List"
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[:get , :set , :push].each do |f|
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obj.add_instance_method Builtin::Array.send(f , nil)
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end
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end
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end
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end
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