89 lines
2.3 KiB
Ruby
89 lines
2.3 KiB
Ruby
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# Below we define functions (in different classes) that are not part of the run-time
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# They are used for the boot process, ie when this codes executes in the vm that builds salama
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# To stay sane, we use the same classes that we use later, but "adapt" them to work in ruby
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# This affects mainly memory layout
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module FakeMem
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def initialize
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@memory = [0,nil]
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end
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end
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module Parfait
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# Objects memory functions. Object memory is 1 based
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# but we implement it with ruby array (0 based) and use 0 as type-word
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# These are the same functions that Builtin implements at run-time
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class Object
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include FakeMem
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def self.new_object *args
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# Space.space.get_class_by_name(:Word)
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#puts "I am #{self}"
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object = self.new(*args)
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object
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end
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# these internal functions are _really_ internal
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# they respresent the smallest code needed to build larger functionality
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# but should _never_ be used outside parfait. in fact that should be impossible
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def internal_object_get_typeword
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@memory[0]
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end
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def internal_object_set_typeword w
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@memory[0] = w
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end
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def internal_object_length
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@memory.length - 1 # take of type-word
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end
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# 1 -based index
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def internal_object_get(index)
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@memory[index]
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end
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# 1 -based index
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def internal_object_set(index , value)
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@memory[index] = value
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end
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def internal_object_grow(length)
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old_length = internal_object_length()
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while( old_length < length )
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internal_object_set( old_length + 1, nil)
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old_length = old_length + 1
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end
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end
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end
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class Parfait::Class
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end
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class Parfait::List
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end
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# Functions to generate parfait objects
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def self.new_word( string )
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string = string.to_s if string.is_a? Symbol
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word = Parfait::Word.new( string.length )
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string.codepoints.each_with_index do |code , index |
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word.set_char(index + 1 , code)
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end
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word
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end
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def self.new_list array
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list = List.new_object
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list.set_length array.length
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index = 1
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while index < array.length do
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list.set(index , array[index - 1])
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end
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list
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end
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Word.class_eval do
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def to_s
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string = ""
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index = 1
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while( index <= self.length)
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string[index - 1] = get_char(index).chr
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index = index + 1
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end
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string
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end
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end
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end
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