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       1                 :             : /*
       2                 :             :  * regfree - free an RE
       3                 :             :  *
       4                 :             :  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
       5                 :             :  *
       6                 :             :  * Development of this software was funded, in part, by Cray Research Inc.,
       7                 :             :  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
       8                 :             :  * Corporation, none of whom are responsible for the results.  The author
       9                 :             :  * thanks all of them.
      10                 :             :  *
      11                 :             :  * Redistribution and use in source and binary forms -- with or without
      12                 :             :  * modification -- are permitted for any purpose, provided that
      13                 :             :  * redistributions in source form retain this entire copyright notice and
      14                 :             :  * indicate the origin and nature of any modifications.
      15                 :             :  *
      16                 :             :  * I'd appreciate being given credit for this package in the documentation
      17                 :             :  * of software which uses it, but that is not a requirement.
      18                 :             :  *
      19                 :             :  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
      20                 :             :  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
      21                 :             :  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
      22                 :             :  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
      23                 :             :  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
      24                 :             :  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
      25                 :             :  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
      26                 :             :  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
      27                 :             :  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
      28                 :             :  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      29                 :             :  *
      30                 :             :  * src/backend/regex/regfree.c
      31                 :             :  *
      32                 :             :  *
      33                 :             :  * You might think that this could be incorporated into regcomp.c, and
      34                 :             :  * that would be a reasonable idea... except that this is a generic
      35                 :             :  * function (with a generic name), applicable to all compiled REs
      36                 :             :  * regardless of the size of their characters, whereas the stuff in
      37                 :             :  * regcomp.c gets compiled once per character size.
      38                 :             :  */
      39                 :             : 
      40                 :             : #include "regex/regguts.h"
      41                 :             : 
      42                 :             : 
      43                 :             : /*
      44                 :             :  * pg_regfree - free an RE (generic function, punts to RE-specific function)
      45                 :             :  *
      46                 :             :  * Ignoring invocation with NULL is a convenience.
      47                 :             :  */
      48                 :             : void
      49                 :          20 : pg_regfree(regex_t *re)
      50                 :             : {
      51         [ +  - ]:          20 :         if (re == NULL)
      52                 :           0 :                 return;
      53                 :          20 :         (*((struct fns *) re->re_fns)->free) (re);
      54                 :          20 : }