Line data    Source code

       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          26 : pg_regfree(regex_t *re)
      50             : {
      51          26 :     if (re == NULL)
      52          26 :         return;
      53          26 :     (*((struct fns *) re->re_fns)->free) (re);
      54             : }