exception

来自「source of perl for linux application,」· 代码 · 共 75 行

################################################################################
##
##  $Revision: 5 $
##  $Author: mhx $
##  $Date: 2007/01/02 12:32:31 +0100 $
##
################################################################################
##
##  Version 3.x, Copyright (C) 2004-2007, Marcus Holland-Moritz.
##  Version 2.x, Copyright (C) 2001, Paul Marquess.
##  Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
##
##  This program is free software; you can redistribute it and/or
##  modify it under the same terms as Perl itself.
##
################################################################################

=provides

dXCPT
XCPT_TRY_START
XCPT_TRY_END
XCPT_CATCH
XCPT_RETHROW

=implementation

#ifdef NO_XSLOCKS
#  ifdef dJMPENV
#    define dXCPT             dJMPENV; int rEtV = 0
#    define XCPT_TRY_START    JMPENV_PUSH(rEtV); if (rEtV == 0)
#    define XCPT_TRY_END      JMPENV_POP;
#    define XCPT_CATCH        if (rEtV != 0)
#    define XCPT_RETHROW      JMPENV_JUMP(rEtV)
#  else
#    define dXCPT             Sigjmp_buf oldTOP; int rEtV = 0
#    define XCPT_TRY_START    Copy(top_env, oldTOP, 1, Sigjmp_buf); rEtV = Sigsetjmp(top_env, 1); if (rEtV == 0)
#    define XCPT_TRY_END      Copy(oldTOP, top_env, 1, Sigjmp_buf);
#    define XCPT_CATCH        if (rEtV != 0)
#    define XCPT_RETHROW      Siglongjmp(top_env, rEtV)
#  endif
#endif

=xsmisc

/* defined in module3.c */
int exception(int throw_e);

=xsubs

int
exception(throw_e)
  int throw_e
  OUTPUT:
    RETVAL

=tests plan => 7

my $rv;

$Devel::PPPort::exception_caught = undef;

$rv = eval { &Devel::PPPort::exception(0) };
ok($@, '');
ok(defined $rv);
ok($rv, 42);
ok($Devel::PPPort::exception_caught, 0);

$Devel::PPPort::exception_caught = undef;

$rv = eval { &Devel::PPPort::exception(1) };
ok($@, "boo\n");
ok(not defined $rv);
ok($Devel::PPPort::exception_caught, 1);