From: ademakov@gmail.com   
      
   On Sat, May 18, 2013 at 12:57 AM, Costello, Roger L.    
   wrote:   
   > Are there any articles or books that discuss this technique?   
   >   
   > [That's been the conventional wisdom at least since I took a compilers   
   > course in the early 1970s.  I believe I mentioned it in lex&yacc and   
   > later in flex&bison.  It's easier, and it also permits much better   
   > error messages. -John]   
      
   Yes, perhaps any book on compilers would present exactly this   
   approach. I personally found "Engineering a Compiler" by Keith Cooper   
   and Linda Torczon to be a very good intro into compilers.   
      
   Regards,   
   Aleksey   
      
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