/* cop.h
*
- * Copyright (c) 1991-2000, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, 2004, 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 {
I32 cop_arybase; /* array base this line was compiled with */
line_t cop_line; /* line # of this command */
SV * cop_warnings; /* lexical warnings bitmask */
+ SV * cop_io; /* lexical IO defaults */
};
#define Nullcop Null(COP*)
# define CopFILE(c) ((c)->cop_file)
# define CopFILEGV(c) (CopFILE(c) \
? gv_fetchfile(CopFILE(c)) : Nullgv)
-# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) /* XXX */
+
+# ifdef NETWARE
+# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv))
+# else
+# define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv))
+# endif
+
# define CopFILESV(c) (CopFILE(c) \
? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv)
# define CopFILEAV(c) (CopFILE(c) \
? GvAV(gv_fetchfile(CopFILE(c))) : Nullav)
# define CopSTASHPV(c) ((c)->cop_stashpv)
-# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savepv(pv)) /* XXX */
+
+# ifdef NETWARE
+# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch))
+# else
+# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv))
+# endif
+
# define CopSTASH(c) (CopSTASHPV(c) \
? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv)
-# define CopSTASH_set(c,hv) CopSTASHPV_set(c, HvNAME(hv))
-# define CopSTASH_eq(c,hv) (hv \
+# define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME(hv) : Nullch)
+# define CopSTASH_eq(c,hv) ((hv) \
&& (CopSTASHPV(c) == HvNAME(hv) \
|| (CopSTASHPV(c) && HvNAME(hv) \
&& strEQ(CopSTASHPV(c), HvNAME(hv)))))
+# ifdef NETWARE
+# define CopSTASH_free(c) SAVECOPSTASH_FREE(c)
+# else
+# define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c))
+# endif
+
+# ifdef NETWARE
+# define CopFILE_free(c) SAVECOPFILE_FREE(c)
+# else
+# define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch))
+# endif
#else
# define CopFILEGV(c) ((c)->cop_filegv)
-# define CopFILEGV_set(c,gv) ((c)->cop_filegv = gv)
-# define CopFILE_set(c,pv) ((c)->cop_filegv = gv_fetchfile(pv))
+# define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv))
+# define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv))
# define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv)
# define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav)
# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch)
# define CopSTASH(c) ((c)->cop_stash)
-# define CopSTASH_set(c,hv) ((c)->cop_stash = hv)
+# define CopSTASH_set(c,hv) ((c)->cop_stash = (hv))
# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch)
-# define CopSTASHPV_set(c,pv) CopSTASH_set(c, gv_stashpv(pv,GV_ADD))
-# define CopSTASH_eq(c,hv) (CopSTASH(c) == hv)
+ /* cop_stash is not refcounted */
+# define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD))
+# define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv))
+# define CopSTASH_free(c)
+# define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv))
+
#endif /* USE_ITHREADS */
#define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv))
#define CopLINE_dec(c) (--CopLINE(c))
#define CopLINE_set(c,l) (CopLINE(c) = (l))
+/* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */
+#ifdef MACOS_TRADITIONAL
+# define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c))
+#else
+# define OutCopFILE(c) CopFILE(c)
+#endif
+
/*
* Here we have some enormously heavy (or at least ponderous) wizardry.
*/
CV * cv;
GV * gv;
GV * dfoutgv;
-#ifndef USE_THREADS
AV * savearray;
-#endif /* USE_THREADS */
AV * argarray;
- U16 olddepth;
+ long olddepth;
U8 hasargs;
U8 lval; /* XXX merge lval and hasargs? */
+ PAD *oldcomppad;
};
-#define PUSHSUB(cx) \
+/* base for the next two macros. Don't use directly.
+ * Note that the refcnt of the cv is incremented twice; The CX one is
+ * decremented by LEAVESUB, the other by LEAVE. */
+
+#define PUSHSUB_BASE(cx) \
cx->blk_sub.cv = cv; \
cx->blk_sub.olddepth = CvDEPTH(cv); \
cx->blk_sub.hasargs = hasargs; \
+ if (!CvDEPTH(cv)) { \
+ (void)SvREFCNT_inc(cv); \
+ (void)SvREFCNT_inc(cv); \
+ SAVEFREESV(cv); \
+ }
+
+
+#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_THREADS
-# 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_THREADS */
-
-#ifdef USE_ITHREADS
- /* junk in @_ spells trouble when cloning CVs, so don't leave any */
-# define CLEAR_ARGARRAY() av_clear(cx->blk_sub.argarray)
-#else
-# define CLEAR_ARGARRAY() NOOP
-#endif /* USE_ITHREADS */
+/* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't
+ * leave any (a fast av_clear(ary), basically) */
+#define CLEAR_ARGARRAY(ary) \
+ STMT_START { \
+ AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \
+ SvPVX(ary) = (char*)AvALLOC(ary); \
+ AvFILLp(ary) = -1; \
+ } STMT_END
#define POPSUB(cx,sv) \
STMT_START { \
cx->blk_sub.argarray = newAV(); \
av_extend(cx->blk_sub.argarray, fill); \
AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \
- PL_curpad[0] = (SV*)cx->blk_sub.argarray; \
+ CX_CURPAD_SV(cx->blk_sub, 0) = (SV*)cx->blk_sub.argarray; \
} \
else { \
- CLEAR_ARGARRAY(); \
+ CLEAR_ARGARRAY(cx->blk_sub.argarray); \
} \
} \
sv = (SV*)cx->blk_sub.cv; \
struct block_eval {
I32 old_in_eval;
I32 old_op_type;
- char * old_name;
+ SV * old_namesv;
OP * old_eval_root;
SV * cur_text;
+ CV * cv;
};
#define PUSHEVAL(cx,n,fgv) \
+ STMT_START { \
cx->blk_eval.old_in_eval = PL_in_eval; \
cx->blk_eval.old_op_type = PL_op->op_type; \
- cx->blk_eval.old_name = (n ? savepv(n) : Nullch); \
+ cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \
cx->blk_eval.old_eval_root = PL_eval_root; \
- cx->blk_eval.cur_text = PL_linestr;
+ cx->blk_eval.cur_text = PL_linestr; \
+ cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \
+ } STMT_END
#define POPEVAL(cx) \
+ STMT_START { \
PL_in_eval = cx->blk_eval.old_in_eval; \
optype = cx->blk_eval.old_op_type; \
PL_eval_root = cx->blk_eval.old_eval_root; \
- Safefree(cx->blk_eval.old_name);
+ if (cx->blk_eval.old_namesv) \
+ sv_2mortal(cx->blk_eval.old_namesv); \
+ } STMT_END
/* loop context */
struct block_loop {
OP * last_op;
#ifdef USE_ITHREADS
void * iterdata;
+ PAD *oldcomppad;
#else
SV ** itervar;
#endif
# define CxITERVAR(c) \
((c)->blk_loop.iterdata \
? (CxPADLOOP(cx) \
- ? &PL_curpad[(PADOFFSET)(c)->blk_loop.iterdata] \
+ ? &CX_CURPAD_SV( (c)->blk_loop, \
+ INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)) \
: &GvSV((GV*)(c)->blk_loop.iterdata)) \
: (SV**)NULL)
# define CX_ITERDATA_SET(cx,idata) \
- if (cx->blk_loop.iterdata = (idata)) \
- cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx));
+ CX_CURPAD_SAVE(cx->blk_loop); \
+ if ((cx->blk_loop.iterdata = (idata))) \
+ cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
+ else \
+ cx->blk_loop.itersave = Nullsv;
#else
# define CxITERVAR(c) ((c)->blk_loop.itervar)
# define CX_ITERDATA_SET(cx,ivar) \
- if (cx->blk_loop.itervar = (SV**)(ivar)) \
- cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx));
+ if ((cx->blk_loop.itervar = (SV**)(ivar))) \
+ cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \
+ else \
+ cx->blk_loop.itersave = Nullsv;
#endif
#define PUSHLOOP(cx, dat, s) \
cx->blk_oldscopesp = PL_scopestack_ix, \
cx->blk_oldretsp = PL_retstack_ix, \
cx->blk_oldpm = PL_curpm, \
- cx->blk_gimme = gimme; \
+ cx->blk_gimme = (U8)gimme; \
DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \
(long)cxstack_ix, PL_block_type[CxTYPE(cx)]); )
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 {
/* private flags for CXt_EVAL */
#define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */
+#define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */
#ifdef USE_ITHREADS
/* private flags for CXt_LOOP */
#define CxTYPE(c) ((c)->cx_type & CXTYPEMASK)
#define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \
== (CXt_EVAL|CXp_REAL))
+#define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \
+ == (CXt_EVAL|CXp_TRYBLOCK))
#define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc()))
-/* "gimme" values */
+/*
+=head1 "Gimme" Values
+*/
/*
=for apidoc AmU||G_SCALAR
L<perlcall>.
=for apidoc AmU||G_ARRAY
-Used to indicate array context. See C<GIMME_V>, C<GIMME> and
+Used to indicate list context. See C<GIMME_V>, C<GIMME> and
L<perlcall>.
=for apidoc AmU||G_VOID
#define G_NOARGS 8 /* Don't construct a @_ array. */
#define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */
#define G_NODEBUG 32 /* Disable debugging at toplevel. */
+#define G_METHOD 64 /* Calling method. */
/* flag bits for PL_in_eval */
#define EVAL_NULL 0 /* not in an eval */
#define EVAL_INEVAL 1 /* some enclosing scope is an eval */
#define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */
#define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */
+#define EVAL_INREQUIRE 8 /* The code is being required. */
/* Support for switching (stack and block) contexts.
* This ensures magic doesn't invalidate local stack and cx pointers.
* PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */
#define POPSTACK \
STMT_START { \
- djSP; \
+ dSP; \
PERL_SI *prev = PL_curstackinfo->si_prev; \
if (!prev) { \
PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \
POPSTACK; \
} \
} STMT_END
+
+#define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
+#define IN_PERL_RUNTIME (PL_curcop != &PL_compiling)
+
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