³ò
»Ã¥Mc           @   sg   d  Z  d d k Z d d k Z d „  Z d „  Z d „  Z d „  Z d „  Z e d j o e ƒ  n d S(	   s&   
Created on Nov 8, 2010

@author: ola
iÿÿÿÿNc            s)   g  ‰ ‡  ‡ ‡ f d †  ‰ ˆ |  ƒ ˆ S(   sM  
    using the nonterminal in string nont (starts with <)
    look up definition in dictionary rules, pick production to expand
    (chooseo at random from list associated with nont in dictionary rules)
    and return list that consists of expanding the non-terminal
    using the randomly chosen production for the non-terminal
    c            sY   ˆ  |  } t  i | ƒ } x9 | D]1 } | i d ƒ o ˆ | ƒ q  ˆ i | ƒ q  Wd  S(   Nt   <(   t   randomt   choicet
   startswitht   append(   t   nontt   prodst   chosent   word(   t   rulest   doworkt   words(    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyR
      s    
 (    (   R   R	   (    (   R	   R
   R   sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyt   generate_from	   s    		
c         C   sb   t  d |  ƒ } d } xD | D]< } | t | ƒ d j o Hd } n | t | ƒ 7} | Gq WHHd  S(   Ns   <start>i    i-   (   R   t   len(   R	   t   outputt   llenR   (    (    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyt   start    s     
c   	      C   s³   d } t  i | |  ƒ } | o‡ | i d ƒ i ƒ  } | i d ƒ } g  | | <d } xY t  i | | ƒ D]8 } | i d ƒ } | i ƒ  i ƒ  } | | i | ƒ qf Wn
 |  Gd GHd S(   s÷   
    rule is a string in the proper format for an RSG grammar definition (complete {...})
    modifies dictionary (SIDE_EFFECT) by adding a key for the non-terminal
    in the definition and the value is the list of rules for the non-terminal
    s   {\s*(<[^>]+>)(.*)}i   i   s   ([^;]+);s   doesn't matchN(   t   ret   matcht   groupt   stript   finditert   splitR   (	   t   rulet
   dictionaryt   patternt   matR   t	   remaindert   partPatternt
   productiont   parts(    (    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyt
   parse_rule.   s    
 c         C   sa   |  i  ƒ  } t i d d | ƒ } h  } d } x- t i | | ƒ D] } t | i ƒ  | ƒ q@ W| S(   sÇ   
    Create a dictionary of grammar definitions from source
    and return the dictionary. Keys are non-terminals, values
    are lists of rules to expand the non-terminals (each rule is a list)
    s   \s+t    s   {[^}]+}(   t   readR   t   subR   R   R   (   t   sourcet   textt   flatR   t   gramt   m(    (    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyt
   initializeE   s     c          C   s:   t  d ƒ }  t |  ƒ } t | ƒ t | ƒ |  i ƒ  d  S(   Ns   apt-issues.g(   t   openR(   R   t   close(   t   ft   d(    (    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pyt   mainV   s
    

t   __main__(	   t   __doc__R   R   R   R   R   R(   R-   t   __name__(    (    (    sB   /usr/project/cwd/spring11/cps006/recitation/lab12/code/rsgModel.pys   <module>   s   					