| Server IP : 85.214.239.14 / Your IP : 3.142.194.27 Web Server : Apache/2.4.62 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /usr/share/doc/libparse-recdescent-perl/examples/ |
Upload File : |
use v5.10;
use warnings;
# SHOWCASE VARIOUS ERROR MESSAGES WITH A VERY UNWELL GRAMMAR
use Parse::RecDescent;
open (Parse::RecDescent::ERROR, ">-") or die;
$grammar =
q{
<warn:3>
typedef : a ... ...! ... b
typedef : a ...!...!...!...! b
| /type/ ident /has/ field(s) /end type/
{ $result = $item[2]; }
| /type/ ident /is/ ident
{ $result = $item[2]; }
| quasit(s)
| quasit(-1..3)
| quasit(..0)
| field(?) field end
| <error> quasit "here" ...!/why/
Extend: extend
Replace: replace
$%^@#
field : /field/ ident /is/ ident
| field quasit
| !quasit(s?)
!| #NOTHING
typedef : whatever
package somewhereelse
!ident : /[A-Za-z]\w*???/
{ $result = $item[1]; }
quasit : field
| typedef
};
new Parse::RecDescent ($grammar) || die "Bad grammar! No biscuit!\n";