From: Joel VanderWerf <vjoel@...>
Date: 2008-03-03T14:34:50+09:00
Subject: Re: [QUIZ] Hello, world? (#158)

Going back to the original....


require 'ostruct'

class BProgram
   class Context < OpenStruct
     def extrn(*)
     end

     def putchar char
       print char.gsub(/\*n/) {"\n"}
     end
   end

   def self.run_in_ruby(&block)
     new(&block).run
   end

   def initialize(&block)
     @ctx = Context.new
     instance_eval(&block)
   end

   def run
     @ctx.instance_eval(&@main)
   end

   def main(&block)
     @main = block
   end

   def method_missing(name, arg)
     @ctx.send("#{name}=", arg)
   end
end

BProgram.run_in_ruby {
   main( ) {
    extrn a, b, c;
    putchar(a); putchar(b); putchar(c); putchar('!*n');
   }

   a 'hell';
   b 'o, w';
   c 'orld';
}


-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407