/* cop.h
*
- * Copyright (c) 1991-2002, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
+ * Control ops (cops) are one of the three ops OP_NEXTSTATE, OP_DBSTATE,
+ * and OP_SETSTATE that (loosely speaking) are separate statements.
+ * They hold information important for lexical state and error reporting.
+ * At run time, PL_curcop is set to point to the most recently executed cop,
+ * and thus can be used to determine our current state.
*/
struct cop {
CV * cv;
GV * gv;
GV * dfoutgv;
-#ifndef USE_5005THREADS
AV * savearray;
-#endif /* USE_5005THREADS */
AV * argarray;
long olddepth;
U8 hasargs;
U8 lval; /* XXX merge lval and hasargs? */
- PAD oldcurpad;
+ PAD *oldcomppad;
};
-#define PUSHSUB(cx) \
+/* base for the next two macros. Don't use directly */
+#define PUSHSUB_BASE(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.olddepth = CvDEPTH(cv); \
- cx->blk_sub.hasargs = hasargs; \
+ cx->blk_sub.hasargs = hasargs;
+
+#define PUSHSUB(cx) \
+ PUSHSUB_BASE(cx) \
cx->blk_sub.lval = PL_op->op_private & \
(OPpLVAL_INTRO|OPpENTERSUB_INARGS);
+/* variant for use by OP_DBSTATE, where op_private holds hint bits */
+#define PUSHSUB_DB(cx) \
+ PUSHSUB_BASE(cx) \
+ cx->blk_sub.lval = 0;
+
+
#define PUSHFORMAT(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.gv = gv; \
cx->blk_sub.dfoutgv = PL_defoutgv; \
(void)SvREFCNT_inc(cx->blk_sub.dfoutgv)
-#ifdef USE_5005THREADS
-# define POP_SAVEARRAY() NOOP
-#else
-# define POP_SAVEARRAY() \
+#define POP_SAVEARRAY() \
STMT_START { \
SvREFCNT_dec(GvAV(PL_defgv)); \
GvAV(PL_defgv) = cx->blk_sub.savearray; \
} STMT_END
-#endif /* USE_5005THREADS */
/* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't
* leave any (a fast av_clear(ary), basically) */
OP * last_op;
#ifdef USE_ITHREADS
void * iterdata;
- PAD oldcurpad;
+ PAD *oldcomppad;
#else
SV ** itervar;
#endif
PL_retstack_ix = cx->blk_oldretsp, \
pm = cx->blk_oldpm, \
gimme = cx->blk_gimme; \
+ DEBUG_SCOPE("POPBLOCK"); \
DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \
(long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); )
PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
PL_scopestack_ix = cx->blk_oldscopesp, \
PL_retstack_ix = cx->blk_oldretsp, \
- PL_curpm = cx->blk_oldpm
+ PL_curpm = cx->blk_oldpm; \
+ DEBUG_SCOPE("TOPBLOCK");
/* substitution context */
struct subst {