nodes.rb

class Nodes < Struct.new(:nodes)
    def <<(node)
      nodes << node
      self
    end
end

class LiteralNode < Struct.new(:value)
end

class NumberNode < LiteralNode
end

class StringNode < LiteralNode
end

class TrueNode < LiteralNode
    def initialize
        super(true)
    end
end

class FalseNode < LiteralNode
    def initialize
        super(false)
    end
end

class NilNode < LiteralNode
    def initialize
        super(nil)
    end
end

class ClassNode < Struct.new(:name, :body); end

class IfNode  < Struct.new(:condition, :body); end

class WhileNode < Struct.new(:condition, :body); end

class DefNode < Struct.new(:name, :params, :body); end

class GetLocalNode < Struct.new(:name); end

class SetLocalNode < Struct.new(:name, :value); end

class CallNode < Struct.new(:receiver, :method, :arguments); end