pcre2_set_compile_recursion_guard(category31-clients.html) - phpMan

PCRE2_SET_COMPILE_RECURSIONLibrary3FunctioPCRE2_SET_COMPILE_RECURSION_GUARD(3)
NAME
       PCRE2 - Perl-compatible regular expressions (revised API)
SYNOPSIS
       #include <pcre2.h>
       int pcre2_set_compile_recursion_guard(pcre2_compile_context *ccontext,
         int (*guard_function)(uint32_t, void *), void *user_data);
DESCRIPTION
       This  function  defines,  within  a compile context, a function that is
       called whenever pcre2_compile() starts to compile a parenthesized  part
       of  a  pattern.  The  first  argument to the function gives the current
       depth of parenthesis nesting, and the second is user data that is  sup-
       plied  when  the function is set up. The callout function should return
       zero if all is well, or non-zero to force an  error.  This  feature  is
       provided  so  that  applications  can  check the available system stack
       space, in order to avoid running  out.  The  result  of  pcre2_set_com-
       pile_recursion_guard() is always zero.
       There is a complete description of the PCRE2 native API in the pcre2api
       page and a description of the POSIX API in the pcre2posix page.
PCRE2 10.00                     22 OctoberPCRE2_SET_COMPILE_RECURSION_GUARD(3)