introducing references
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@ -19,7 +19,7 @@ module Boot
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# in a non-booting version this should map to _add_singleton_method
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def add_function function
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raise "not a function #{function}" unless function.is_a? Function
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raise "not a function #{function}" unless function.is_a? Vm::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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@ -10,6 +10,11 @@ module Boot
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return index_function
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end
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def self.layout
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layout_function = Vm::Function.new(:layout , Vm::Reference , [ ] , Vm::Reference )
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layout_function.at_index 2
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layout_function
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end
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# in ruby, how this goes is
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# def _get_instance_variable var
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@ -1,7 +1,7 @@
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module Crystal
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module Kernel
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def self.putstring context
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function = Vm::Function.new(:putstring , Vm::Integer , [] )
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function = Vm::Function.new(:putstring , Vm::Reference , [] )
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ret = Vm::RegisterMachine.instance.write_stdout(function)
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function.set_return ret
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function
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@ -28,13 +28,14 @@ module Vm
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class Function < Code
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def initialize(name , receiver = Vm::Integer , args = [] , return_type = Vm::Integer)
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def initialize(name , receiver = Vm::Reference , args = [] , return_type = Vm::Reference)
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super()
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@name = name.to_sym
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if receiver.is_a?(Value)
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@receiver = receiver
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raise "arg in non std register #{receiver.inspect}" unless RegisterMachine.instance.receiver_register == receiver.register_symbol
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else
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puts receiver.inspect
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@receiver = receiver.new(RegisterMachine.instance.receiver_register)
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end
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@ -63,7 +64,7 @@ module Vm
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@insert_at
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end
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def set_return type_or_value
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@return_type = type_or_value || Vm::Integer
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@return_type = type_or_value || Vm::Reference
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if @return_type.is_a?(Value)
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raise "return in non std register #{@return_type.inspect}" unless RegisterMachine.instance.return_register == @return_type.register_symbol
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else
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@ -1,7 +1,7 @@
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module Vm
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class Integer < Word
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# needs to be here as Word's constructor is private (to make it abstract)
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def initilize reg
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def initialize reg
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super
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end
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@ -33,7 +33,7 @@ module Vm
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block.sub( self , left , right )
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self
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end
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def left_shift block , first , right
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def left_shift block , left , right
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block.mov( self , left , shift_lsr: right )
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self
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end
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@ -1,7 +1,7 @@
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module Vm
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class Reference
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class Reference < Word
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# needs to be here as Word's constructor is private (to make it abstract)
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def initilize reg
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def initialize reg
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super
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end
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