ply/ply/yacc.py

1134 #       expr : expr PLUS term
1139 #       prod     - A list of symbols on the right side ['expr','PLUS','term']
1251 #       expr : expr . PLUS term
1257 #       prod       - A list of symbols on the right side ['expr','.', 'PLUS','term']
1260 #       lr_next      Next LR item. Example, if we are ' expr -> expr . PLUS term'
1261 #                    then lr_next refers to 'expr -> expr PLUS . term'
1329         for term in terminals:
1330             self.Terminals[term] = []
1365     def set_precedence(self,term,assoc,level):
1367         if term in self.Precedence:
1368             raise GrammarError("Precedence already specified for terminal '%s'" % term)
1371         self.Precedence[term] = (assoc,level)
1380     # a rule such as 'expr : expr PLUS term' has a production name of 'expr' and
1381     # symbols ['expr','PLUS','term'].
1564         for (s,term) in terminates.items():
1565             if not term:
1625     # Returns a list of tuples (term,precedence) corresponding to precedence
1626     # rules that were never used by the grammar.  term is the name of the terminal
2941                     self.log.error("Malformed precedence entry %s. Must be (assoc, term, ..., term)",p)
2949                 for term in p[1:]:
2950                     if not isinstance(term,str):
2954                     preclist.append((term,assoc,level+1))
3111     for term, assoc, level in pinfo.preclist:
3113             grammar.set_precedence(term,assoc,level)
3153         for term in unused_terminals:
3154             errorlog.warning("Token '%s' defined, but not used", term)
3155             debuglog.info("    %s", term)
3186         for term in terms:
3187             debuglog.info("%-20s : %s", term, " ".join([str(s) for s in grammar.Terminals[term]]))
3209     for term, assoc in unused_prec:
3210         errorlog.error("Precedence rule '%s' defined for unknown symbol '%s'", assoc, term)