[p5sagit/p5-mst-13.2.git] / op.h

/*    op.h
 *
 *    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.
 *
 */

/*
 * The fields of BASEOP are:
 *	op_next		Pointer to next ppcode to execute after this one.
 *			(Top level pre-grafted op points to first op,
 *			but this is replaced when op is grafted in, when
 *			this op will point to the real next op, and the new
 *			parent takes over role of remembering starting op.)
 *	op_ppaddr	Pointer to current ppcode's function.
 *	op_type		The type of the operation.
 *	op_flags	Flags common to all operations.  See OPf_* below.
 *	op_private	Flags peculiar to a particular operation (BUT,
 *			by default, set to the number of children until
 *			the operation is privatized by a check routine,
 *			which may or may not check number of children).
 */

#ifdef DEBUGGING_OPS
#define OPCODE opcode
#else
#define OPCODE U16
#endif

#ifdef BASEOP_DEFINITION
#define BASEOP BASEOP_DEFINITION
#else
#define BASEOP				\
    OP*		op_next;		\
    OP*		op_sibling;		\
    OP*		(CPERLscope(*op_ppaddr))(pTHX);		\
    PADOFFSET	op_targ;		\
    OPCODE	op_type;		\
    U16		op_seq;			\
    U8		op_flags;		\
    U8		op_private;
#endif

#define OP_GIMME(op,dfl) \
	(((op)->op_flags & OPf_WANT) == OPf_WANT_VOID   ? G_VOID   : \
	 ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
	 ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST   ? G_ARRAY   : \
	 dfl)

/*
=head1 "Gimme" Values

=for apidoc Amn|U32|GIMME_V
The XSUB-writer's equivalent to Perl's C<wantarray>.  Returns C<G_VOID>,
C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
respectively.

=for apidoc Amn|U32|GIMME
A backward-compatible version of C<GIMME_V> which can only return
C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
Deprecated.  Use C<GIMME_V> instead.

=cut
*/

#define GIMME_V		OP_GIMME(PL_op, block_gimme())

/* Public flags */

#define OPf_WANT	3	/* Mask for "want" bits: */
#define  OPf_WANT_VOID	 1	/*   Want nothing */
#define  OPf_WANT_SCALAR 2	/*   Want single value */
#define  OPf_WANT_LIST	 3	/*   Want list of any length */
#define OPf_KIDS	4	/* There is a firstborn child. */
#define OPf_PARENS	8	/* This operator was parenthesized. */
				/*  (Or block needs explicit scope entry.) */
#define OPf_REF		16	/* Certified reference. */
				/*  (Return container, not containee). */
#define OPf_MOD		32	/* Will modify (lvalue). */
#define OPf_STACKED	64	/* Some arg is arriving on the stack. */
#define OPf_SPECIAL	128	/* Do something weird for this op: */
				/*  On local LVAL, don't init local value. */
				/*  On OP_SORT, subroutine is inlined. */
				/*  On OP_NOT, inversion was implicit. */
				/*  On OP_LEAVE, don't restore curpm. */
				/*  On truncate, we truncate filehandle */
				/*  On control verbs, we saw no label */
				/*  On flipflop, we saw ... instead of .. */
				/*  On UNOPs, saw bare parens, e.g. eof(). */
				/*  On OP_ENTERSUB || OP_NULL, saw a "do". */
				/*  On OP_EXISTS, treat av as av, not avhv.  */
				/*  On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
				/*  On OP_ENTERITER, loop var is per-thread */
				/*  On pushre, re is /\s+/ imp. by split " " */
				/*  On regcomp, "use re 'eval'" was in scope */
				/*  On OP_READLINE, was <$filehandle> */
				/*  On RV2[SG]V, don't create GV--in defined()*/
				/*  On OP_DBSTATE, indicates breakpoint
				 *    (runtime property) */

/* old names; don't use in new code, but don't break them, either */
#define OPf_LIST	OPf_WANT_LIST
#define OPf_KNOW	OPf_WANT

#define GIMME \
	  (PL_op->op_flags & OPf_WANT					\
	   ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST		\
	      ? G_ARRAY							\
	      : G_SCALAR)						\
	   : dowantarray())

/* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
 * bits of PL_hints in op_private */

/* Private for lvalues */
#define OPpLVAL_INTRO	128	/* Lvalue must be localized or lvalue sub */

/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
#define OPpREFCOUNTED		64	/* op_targ carries a refcount */

/* Private for OP_AASSIGN */
#define OPpASSIGN_COMMON	64	/* Left & right have syms in common. */

/* Private for OP_SASSIGN */
#define OPpASSIGN_BACKWARDS	64	/* Left & right switched. */

/* Private for OP_MATCH and OP_SUBST{,CONST} */
#define OPpRUNTIME		64	/* Pattern coming in on the stack */

/* Private for OP_TRANS */
#define OPpTRANS_FROM_UTF	1
#define OPpTRANS_TO_UTF		2
#define OPpTRANS_IDENTICAL	4	/* right side is same as left */
#define OPpTRANS_SQUASH		8
#define OPpTRANS_DELETE		16
#define OPpTRANS_COMPLEMENT	32
#define OPpTRANS_GROWS		64

/* Private for OP_REPEAT */
#define OPpREPEAT_DOLIST	64	/* List replication. */

/* Private for OP_RV2?V, OP_?ELEM */
#define OPpDEREF		(32|64)	/* Want ref to something: */
#define OPpDEREF_AV		32	/*   Want ref to AV. */
#define OPpDEREF_HV		64	/*   Want ref to HV. */
#define OPpDEREF_SV		(32|64)	/*   Want ref to SV. */
  /* OP_ENTERSUB only */
#define OPpENTERSUB_DB		16	/* Debug subroutine. */
#define OPpENTERSUB_HASTARG	32	/* Called from OP tree. */
#define OPpENTERSUB_NOMOD	64	/* Immune to mod() for :attrlist. */
  /* OP_RV2CV only */
#define OPpENTERSUB_AMPER	8	/* Used & form to call. */
#define OPpENTERSUB_NOPAREN	128	/* bare sub call (without parens) */
#define OPpENTERSUB_INARGS	4	/* Lval used as arg to a sub. */
  /* OP_GV only */
#define OPpEARLY_CV		32	/* foo() called before sub foo was parsed */
  /* OP_?ELEM only */
#define OPpLVAL_DEFER		16	/* Defer creation of array/hash elem */
  /* OP_RV2?V, OP_GVSV only */
#define OPpOUR_INTRO		16	/* Variable was in an our() */
  /* OP_RV2[AH]V, OP_PAD[AH]V, OP_[AH]ELEM */
#define OPpMAYBE_LVSUB		8	/* We might be an lvalue to return */
  /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */

/* Private for OPs with TARGLEX */
  /* (lower bits may carry MAXARG) */
#define OPpTARGET_MY		16	/* Target is PADMY. */

/* Private for OP_CONST */
#define	OPpCONST_STRICT		8	/* bearword subject to strict 'subs' */
#define OPpCONST_ENTERED	16	/* Has been entered as symbol. */
#define OPpCONST_ARYBASE	32	/* Was a $[ translated to constant. */
#define OPpCONST_BARE		64	/* Was a bare word (filehandle?). */
#define OPpCONST_WARNING	128	/* Was a $^W translated to constant. */

/* Private for OP_FLIP/FLOP */
#define OPpFLIP_LINENUM		64	/* Range arg potentially a line num. */

/* Private for OP_LIST */
#define OPpLIST_GUESSED		64	/* Guessed that pushmark was needed. */

/* Private for OP_DELETE */
#define OPpSLICE		64	/* Operating on a list of keys */

/* Private for OP_EXISTS */
#define OPpEXISTS_SUB		64	/* Checking for &sub, not {} or [].  */

/* Private for OP_SORT */
#define OPpSORT_NUMERIC		1	/* Optimized away { $a <=> $b } */
#define OPpSORT_INTEGER		2	/* Ditto while under "use integer" */
#define OPpSORT_REVERSE		4	/* Descending sort */
/* Private for OP_THREADSV */
#define OPpDONE_SVREF		64	/* Been through newSVREF once */

/* Private for OP_OPEN and OP_BACKTICK */
#define OPpOPEN_IN_RAW		16	/* binmode(F,":raw") on input fh */
#define OPpOPEN_IN_CRLF		32	/* binmode(F,":crlf") on input fh */
#define OPpOPEN_OUT_RAW		64	/* binmode(F,":raw") on output fh */
#define OPpOPEN_OUT_CRLF	128	/* binmode(F,":crlf") on output fh */

/* Private for OP_EXIT, HUSH also for OP_DIE */
#define OPpHUSH_VMSISH		64	/* hush DCL exit msg vmsish mode*/
#define OPpEXIT_VMSISH		128	/* exit(0) vs. exit(1) vmsish mode*/

struct op {
    BASEOP
};

struct unop {
    BASEOP
    OP *	op_first;
};

struct binop {
    BASEOP
    OP *	op_first;
    OP *	op_last;
};

struct logop {
    BASEOP
    OP *	op_first;
    OP *	op_other;
};

struct listop {
    BASEOP
    OP *	op_first;
    OP *	op_last;
};

struct pmop {
    BASEOP
    OP *	op_first;
    OP *	op_last;
    OP *	op_pmreplroot;
    OP *	op_pmreplstart;
    PMOP *	op_pmnext;		/* list of all scanpats */
#ifdef USE_ITHREADS
    IV          op_pmoffset;
#else
    REGEXP *    op_pmregexp;            /* compiled expression */
#endif
    U32		op_pmflags;
    U32		op_pmpermflags;
    U8		op_pmdynflags;
#ifdef USE_ITHREADS
    char *	op_pmstashpv;
#else
    HV *	op_pmstash;
#endif
};

#ifdef USE_ITHREADS
#define PM_GETRE(o)     (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
#define PM_SETRE(o,r)   STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
#define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
#define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
#else
#define PM_GETRE(o)     ((o)->op_pmregexp)
#define PM_SETRE(o,r)   ((o)->op_pmregexp = (r))
#define PM_GETRE_SAFE PM_GETRE
#define PM_SETRE_SAFE PM_SETRE
#endif

#define PMdf_USED	0x01		/* pm has been used once already */
#define PMdf_TAINTED	0x02		/* pm compiled from tainted pattern */
#define PMdf_UTF8	0x04		/* pm compiled from utf8 data */
#define PMdf_DYN_UTF8	0x08

#define PMdf_CMP_UTF8	(PMdf_UTF8|PMdf_DYN_UTF8)

#define PMf_RETAINT	0x0001		/* taint $1 etc. if target tainted */
#define PMf_ONCE	0x0002		/* use pattern only once per reset */
#define PMf_UNUSED	0x0004		/* free for use */
#define PMf_MAYBE_CONST	0x0008		/* replacement contains variables */
#define PMf_SKIPWHITE	0x0010		/* skip leading whitespace for split */
#define PMf_WHITE	0x0020		/* pattern is \s+ */
#define PMf_CONST	0x0040		/* subst replacement is constant */
#define PMf_KEEP	0x0080		/* keep 1st runtime pattern forever */
#define PMf_GLOBAL	0x0100		/* pattern had a g modifier */
#define PMf_CONTINUE	0x0200		/* don't reset pos() if //g fails */
#define PMf_EVAL	0x0400		/* evaluating replacement as expr */
#define PMf_LOCALE	0x0800		/* use locale for character types */
#define PMf_MULTILINE	0x1000		/* assume multiple lines */
#define PMf_SINGLELINE	0x2000		/* assume single line */
#define PMf_FOLD	0x4000		/* case insensitivity */
#define PMf_EXTENDED	0x8000		/* chuck embedded whitespace */

/* mask of bits stored in regexp->reganch */
#define PMf_COMPILETIME	(PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED)

#ifdef USE_ITHREADS

#  define PmopSTASHPV(o)	((o)->op_pmstashpv)
#  define PmopSTASHPV_set(o,pv)	(PmopSTASHPV(o) = savesharedpv(pv))
#  define PmopSTASH(o)		(PmopSTASHPV(o) \
				 ? gv_stashpv(PmopSTASHPV(o),GV_ADD) : Nullhv)
#  define PmopSTASH_set(o,hv)	PmopSTASHPV_set(o, ((hv) ? HvNAME(hv) : Nullch))
#  define PmopSTASH_free(o)	PerlMemShared_free(PmopSTASHPV(o))

#else
#  define PmopSTASH(o)		((o)->op_pmstash)
#  define PmopSTASH_set(o,hv)	((o)->op_pmstash = (hv))
#  define PmopSTASHPV(o)	(PmopSTASH(o) ? HvNAME(PmopSTASH(o)) : Nullch)
   /* op_pmstash is not refcounted */
#  define PmopSTASHPV_set(o,pv)	PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
#  define PmopSTASH_free(o)    
#endif

struct svop {
    BASEOP
    SV *	op_sv;
};

struct padop {
    BASEOP
    PADOFFSET	op_padix;
};

struct pvop {
    BASEOP
    char *	op_pv;
};

struct loop {
    BASEOP
    OP *	op_first;
    OP *	op_last;
    OP *	op_redoop;
    OP *	op_nextop;
    OP *	op_lastop;
};

#define cUNOPx(o)	((UNOP*)o)
#define cBINOPx(o)	((BINOP*)o)
#define cLISTOPx(o)	((LISTOP*)o)
#define cLOGOPx(o)	((LOGOP*)o)
#define cPMOPx(o)	((PMOP*)o)
#define cSVOPx(o)	((SVOP*)o)
#define cPADOPx(o)	((PADOP*)o)
#define cPVOPx(o)	((PVOP*)o)
#define cCOPx(o)	((COP*)o)
#define cLOOPx(o)	((LOOP*)o)

#define cUNOP		cUNOPx(PL_op)
#define cBINOP		cBINOPx(PL_op)
#define cLISTOP		cLISTOPx(PL_op)
#define cLOGOP		cLOGOPx(PL_op)
#define cPMOP		cPMOPx(PL_op)
#define cSVOP		cSVOPx(PL_op)
#define cPADOP		cPADOPx(PL_op)
#define cPVOP		cPVOPx(PL_op)
#define cCOP		cCOPx(PL_op)
#define cLOOP		cLOOPx(PL_op)

#define cUNOPo		cUNOPx(o)
#define cBINOPo		cBINOPx(o)
#define cLISTOPo	cLISTOPx(o)
#define cLOGOPo		cLOGOPx(o)
#define cPMOPo		cPMOPx(o)
#define cSVOPo		cSVOPx(o)
#define cPADOPo		cPADOPx(o)
#define cPVOPo		cPVOPx(o)
#define cCOPo		cCOPx(o)
#define cLOOPo		cLOOPx(o)

#define kUNOP		cUNOPx(kid)
#define kBINOP		cBINOPx(kid)
#define kLISTOP		cLISTOPx(kid)
#define kLOGOP		cLOGOPx(kid)
#define kPMOP		cPMOPx(kid)
#define kSVOP		cSVOPx(kid)
#define kPADOP		cPADOPx(kid)
#define kPVOP		cPVOPx(kid)
#define kCOP		cCOPx(kid)
#define kLOOP		cLOOPx(kid)


#ifdef USE_ITHREADS
#  define	cGVOPx_gv(o)	((GV*)PAD_SVl(cPADOPx(o)->op_padix))
#  define	IS_PADGV(v)	(v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
#  define	IS_PADCONST(v)	(v && SvREADONLY(v))
#  define	cSVOPx_sv(v)	(cSVOPx(v)->op_sv \
				 ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
#  define	cSVOPx_svp(v)	(cSVOPx(v)->op_sv \
				 ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
#else
#  define	cGVOPx_gv(o)	((GV*)cSVOPx(o)->op_sv)
#  define	IS_PADGV(v)	FALSE
#  define	IS_PADCONST(v)	FALSE
#  define	cSVOPx_sv(v)	(cSVOPx(v)->op_sv)
#  define	cSVOPx_svp(v)	(&cSVOPx(v)->op_sv)
#endif

#define	cGVOP_gv		cGVOPx_gv(PL_op)
#define	cGVOPo_gv		cGVOPx_gv(o)
#define	kGVOP_gv		cGVOPx_gv(kid)
#define cSVOP_sv		cSVOPx_sv(PL_op)
#define cSVOPo_sv		cSVOPx_sv(o)
#define kSVOP_sv		cSVOPx_sv(kid)

#define Nullop Null(OP*)

/* Lowest byte-and-a-bit of PL_opargs */
#define OA_MARK 1
#define OA_FOLDCONST 2
#define OA_RETSCALAR 4
#define OA_TARGET 8
#define OA_RETINTEGER 16
#define OA_OTHERINT 32
#define OA_DANGEROUS 64
#define OA_DEFGV 128
#define OA_TARGLEX 256

/* The next 4 bits encode op class information */
#define OCSHIFT 9

#define OA_CLASS_MASK (15 << OCSHIFT)

#define OA_BASEOP (0 << OCSHIFT)
#define OA_UNOP (1 << OCSHIFT)
#define OA_BINOP (2 << OCSHIFT)
#define OA_LOGOP (3 << OCSHIFT)
#define OA_LISTOP (4 << OCSHIFT)
#define OA_PMOP (5 << OCSHIFT)
#define OA_SVOP (6 << OCSHIFT)
#define OA_PADOP (7 << OCSHIFT)
#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
#define OA_LOOP (9 << OCSHIFT)
#define OA_COP (10 << OCSHIFT)
#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
#define OA_FILESTATOP (12 << OCSHIFT)
#define OA_LOOPEXOP (13 << OCSHIFT)

#define OASHIFT 13

/* Remaining nybbles of PL_opargs */
#define OA_SCALAR 1
#define OA_LIST 2
#define OA_AVREF 3
#define OA_HVREF 4
#define OA_CVREF 5
#define OA_FILEREF 6
#define OA_SCALARREF 7
#define OA_OPTIONAL 8

#ifdef USE_ITHREADS
#  define OP_REFCNT_INIT		MUTEX_INIT(&PL_op_mutex)
#  define OP_REFCNT_LOCK		MUTEX_LOCK(&PL_op_mutex)
#  define OP_REFCNT_UNLOCK		MUTEX_UNLOCK(&PL_op_mutex)
#  define OP_REFCNT_TERM		MUTEX_DESTROY(&PL_op_mutex)
#else
#  define OP_REFCNT_INIT		NOOP
#  define OP_REFCNT_LOCK		NOOP
#  define OP_REFCNT_UNLOCK		NOOP
#  define OP_REFCNT_TERM		NOOP
#endif

#define OpREFCNT_set(o,n)		((o)->op_targ = (n))
#define OpREFCNT_inc(o)			((o) ? (++(o)->op_targ, (o)) : Nullop)
#define OpREFCNT_dec(o)			(--(o)->op_targ)

/* flags used by Perl_load_module() */
#define PERL_LOADMOD_DENY		0x1
#define PERL_LOADMOD_NOIMPORT		0x2
#define PERL_LOADMOD_IMPORT_OPS		0x4

#ifdef USE_REENTRANT_API
#include "reentr.h"
#endif
Commit	Line	Data
a0d0e21e	1	/* op.h
79072805	2	*
4bb101f2	3	* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4bb101f2	4	* 2000, 2001, 2002, 2003, by Larry Wall and others
79072805	5	*
	6	* You may distribute under the terms of either the GNU General Public
	7	* License or the Artistic License, as specified in the README file.
	8	*
79072805	9	*/
	10
	11	/*
	12	* The fields of BASEOP are:
	13	* op_next Pointer to next ppcode to execute after this one.
	14	* (Top level pre-grafted op points to first op,
	15	* but this is replaced when op is grafted in, when
	16	* this op will point to the real next op, and the new
	17	* parent takes over role of remembering starting op.)
	18	* op_ppaddr Pointer to current ppcode's function.
	19	* op_type The type of the operation.
	20	* op_flags Flags common to all operations. See OPf_* below.
	21	* op_private Flags peculiar to a particular operation (BUT,
	22	* by default, set to the number of children until
	23	* the operation is privatized by a check routine,
	24	* which may or may not check number of children).
	25	*/
	26
4633a7c4	27	#ifdef DEBUGGING_OPS
79072805	28	#define OPCODE opcode
	29	#else
	30	#define OPCODE U16
	31	#endif
	32
0f4eea8f	33	#ifdef BASEOP_DEFINITION
	34	#define BASEOP BASEOP_DEFINITION
	35	#else
79072805	36	#define BASEOP \
	37	OP* op_next; \
	38	OP* op_sibling; \
4f63d024	39	OP* (CPERLscope(*op_ppaddr))(pTHX); \
79072805	40	PADOFFSET op_targ; \
	41	OPCODE op_type; \
	42	U16 op_seq; \
a0d0e21e	43	U8 op_flags; \
a0d0e21e	44	U8 op_private;
0f4eea8f	45	#endif
79072805	46
54310121	47	#define OP_GIMME(op,dfl) \
	48	(((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \
	49	((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
	50	((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \
	51	dfl)
	52
954c1994	53	/*
ccfc67b7	54	=head1 "Gimme" Values
ccfc67b7	55
954c1994	56	=for apidoc Amn\|U32\|GIMME_V
954c1994	57	The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
91e74348	58	C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
954c1994	59	respectively.
	60
	61	=for apidoc Amn\|U32\|GIMME
	62	A backward-compatible version of C<GIMME_V> which can only return
	63	C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
	64	Deprecated. Use C<GIMME_V> instead.
	65
	66	=cut
	67	*/
	68
533c011a	69	#define GIMME_V OP_GIMME(PL_op, block_gimme())
79072805	70
79072805	71	/* Public flags */
54310121	72
	73	#define OPf_WANT 3 /* Mask for "want" bits: */
	74	#define OPf_WANT_VOID 1 /* Want nothing */
	75	#define OPf_WANT_SCALAR 2 /* Want single value */
	76	#define OPf_WANT_LIST 3 /* Want list of any length */
79072805	77	#define OPf_KIDS 4 /* There is a firstborn child. */
79072805	78	#define OPf_PARENS 8 /* This operator was parenthesized. */
463ee0b2	79	/* (Or block needs explicit scope entry.) */
a0d0e21e	80	#define OPf_REF 16 /* Certified reference. */
	81	/* (Return container, not containee). */
	82	#define OPf_MOD 32 /* Will modify (lvalue). */
	83	#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
79072805	84	#define OPf_SPECIAL 128 /* Do something weird for this op: */
	85	/* On local LVAL, don't init local value. */
	86	/* On OP_SORT, subroutine is inlined. */
	87	/* On OP_NOT, inversion was implicit. */
a0d0e21e	88	/* On OP_LEAVE, don't restore curpm. */
79072805	89	/* On truncate, we truncate filehandle */
	90	/* On control verbs, we saw no label */
	91	/* On flipflop, we saw ... instead of .. */
	92	/* On UNOPs, saw bare parens, e.g. eof(). */
a0d0e21e	93	/* On OP_ENTERSUB \|\| OP_NULL, saw a "do". */
afebc493	94	/* On OP_EXISTS, treat av as av, not avhv. */
f2ec2afd	95	/* On OP_(ENTER\|LEAVE)EVAL, don't clear $@ */
54b9620d	96	/* On OP_ENTERITER, loop var is per-thread */
497711e7	97	/* On pushre, re is /\s+/ imp. by split " " */
497711e7	98	/* On regcomp, "use re 'eval'" was in scope */
7c6fadd6	99	/* On OP_READLINE, was <$filehandle> */
4e3399f9	100	/* On RV2[SG]V, don't create GV--in defined()*/
5df8de69	101	/* On OP_DBSTATE, indicates breakpoint
5df8de69	102	* (runtime property) */
79072805	103
54310121	104	/* old names; don't use in new code, but don't break them, either */
d91ab173	105	#define OPf_LIST OPf_WANT_LIST
d91ab173	106	#define OPf_KNOW OPf_WANT
954c1994	107
54310121	108	#define GIMME \
62a559b8	109	(PL_op->op_flags & OPf_WANT \
62a559b8	110	? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
d91ab173	111	? G_ARRAY \
	112	: G_SCALAR) \
	113	: dowantarray())
54310121	114
d41ff1b8	115	/* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
	116	* bits of PL_hints in op_private */
	117
a0d0e21e	118	/* Private for lvalues */
cd06dffe	119	#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
a0d0e21e	120
7934575e	121	/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
	122	#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
	123
a0d0e21e	124	/* Private for OP_AASSIGN */
	125	#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
	126
	127	/* Private for OP_SASSIGN */
	128	#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
79072805	129
c90c0ff4	130	/* Private for OP_MATCH and OP_SUBST{,CONST} */
	131	#define OPpRUNTIME 64 /* Pattern coming in on the stack */
	132
79072805	133	/* Private for OP_TRANS */
4757a243	134	#define OPpTRANS_FROM_UTF 1
4757a243	135	#define OPpTRANS_TO_UTF 2
383e7cdd	136	#define OPpTRANS_IDENTICAL 4 /* right side is same as left */
4757a243	137	#define OPpTRANS_SQUASH 8
	138	#define OPpTRANS_DELETE 16
	139	#define OPpTRANS_COMPLEMENT 32
	140	#define OPpTRANS_GROWS 64
79072805	141
79072805	142	/* Private for OP_REPEAT */
a0d0e21e	143	#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805	144
d3011074	145	/* Private for OP_RV2?V, OP_?ELEM */
5f05dabc	146	#define OPpDEREF (32\|64) /* Want ref to something: */
	147	#define OPpDEREF_AV 32 /* Want ref to AV. */
	148	#define OPpDEREF_HV 64 /* Want ref to HV. */
	149	#define OPpDEREF_SV (32\|64) /* Want ref to SV. */
68dc0745	150	/* OP_ENTERSUB only */
68dc0745	151	#define OPpENTERSUB_DB 16 /* Debug subroutine. */
d3011074	152	#define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
95f0a2f1	153	#define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
7a52d87a	154	/* OP_RV2CV only */
68dc0745	155	#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
9675f7ac	156	#define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
cd06dffe	157	#define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
76cd736e	158	/* OP_GV only */
76cd736e	159	#define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
68dc0745	160	/* OP_?ELEM only */
68dc0745	161	#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
64aac5a9	162	/* OP_RV2?V, OP_GVSV only */
78f9721b	163	#define OPpOUR_INTRO 16 /* Variable was in an our() */
	164	/* OP_RV2[AH]V, OP_PAD[AH]V, OP_[AH]ELEM */
	165	#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
192587c2	166	/* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
79072805	167
b162f9ea	168	/* Private for OPs with TARGLEX */
	169	/* (lower bits may carry MAXARG) */
	170	#define OPpTARGET_MY 16 /* Target is PADMY. */
	171
79072805	172	/* Private for OP_CONST */
7a52d87a	173	#define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
748a9306	174	#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
748a9306	175	#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
a0d0e21e	176	#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
599cee73	177	#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
79072805	178
79072805	179	/* Private for OP_FLIP/FLOP */
a0d0e21e	180	#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805	181
ed6116ce	182	/* Private for OP_LIST */
a0d0e21e	183	#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
a0d0e21e	184
5f05dabc	185	/* Private for OP_DELETE */
54310121	186	#define OPpSLICE 64 /* Operating on a list of keys */
5f05dabc	187
afebc493	188	/* Private for OP_EXISTS */
	189	#define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
	190
9c007264	191	/* Private for OP_SORT */
	192	#define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
	193	#define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
	194	#define OPpSORT_REVERSE 4 /* Descending sort */
224a4551	195	/* Private for OP_THREADSV */
224a4551	196	#define OPpDONE_SVREF 64 /* Been through newSVREF once */
554b3eca	197
16fe6d59	198	/* Private for OP_OPEN and OP_BACKTICK */
	199	#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
	200	#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
	201	#define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
	202	#define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
	203
96e176bf	204	/* Private for OP_EXIT, HUSH also for OP_DIE */
96e176bf	205	#define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
d98f61e7	206	#define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
d98f61e7	207
79072805	208	struct op {
	209	BASEOP
	210	};
	211
	212	struct unop {
	213	BASEOP
	214	OP * op_first;
	215	};
	216
	217	struct binop {
	218	BASEOP
	219	OP * op_first;
	220	OP * op_last;
	221	};
	222
	223	struct logop {
	224	BASEOP
	225	OP * op_first;
	226	OP * op_other;
	227	};
	228
79072805	229	struct listop {
	230	BASEOP
	231	OP * op_first;
	232	OP * op_last;
79072805	233	};
	234
	235	struct pmop {
	236	BASEOP
	237	OP * op_first;
	238	OP * op_last;
79072805	239	OP * op_pmreplroot;
	240	OP * op_pmreplstart;
	241	PMOP * op_pmnext; /* list of all scanpats */
1fcf4c12	242	#ifdef USE_ITHREADS
fd1bc7eb	243	IV op_pmoffset;
1fcf4c12	244	#else
	245	REGEXP * op_pmregexp; /* compiled expression */
	246	#endif
699a3330	247	U32 op_pmflags;
e2509266	248	U32 op_pmpermflags;
48c036b1	249	U8 op_pmdynflags;
cb55de95	250	#ifdef USE_ITHREADS
	251	char * op_pmstashpv;
	252	#else
	253	HV * op_pmstash;
	254	#endif
79072805	255	};
a0d0e21e	256
1fcf4c12	257	#ifdef USE_ITHREADS
ba89bb6e	258	#define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
dd7d6c2b	259	#define PM_SETRE(o,r) STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
5f8cb046	260	#define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
5f8cb046	261	#define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
1fcf4c12	262	#else
b9ed2502	263	#define PM_GETRE(o) ((o)->op_pmregexp)
b9ed2502	264	#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
5f8cb046	265	#define PM_GETRE_SAFE PM_GETRE
5f8cb046	266	#define PM_SETRE_SAFE PM_SETRE
1fcf4c12	267	#endif
4825b64b	268
48c036b1	269	#define PMdf_USED 0x01 /* pm has been used once already */
b3eb6a9b	270	#define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */
84e09d5e	271	#define PMdf_UTF8 0x04 /* pm compiled from utf8 data */
	272	#define PMdf_DYN_UTF8 0x08
	273
	274	#define PMdf_CMP_UTF8 (PMdf_UTF8\|PMdf_DYN_UTF8)
48c036b1	275
b3eb6a9b	276	#define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
a0d0e21e	277	#define PMf_ONCE 0x0002 /* use pattern only once per reset */
699a3330	278	#define PMf_UNUSED 0x0004 /* free for use */
ce862d02	279	#define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
a0d0e21e	280	#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
8782bef2	281	#define PMf_WHITE 0x0020 /* pattern is \s+ */
a0d0e21e	282	#define PMf_CONST 0x0040 /* subst replacement is constant */
	283	#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
	284	#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
c90c0ff4	285	#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
a0d0e21e	286	#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
8782bef2	287	#define PMf_LOCALE 0x0800 /* use locale for character types */
a0d0e21e	288	#define PMf_MULTILINE 0x1000 /* assume multiple lines */
a0d0e21e	289	#define PMf_SINGLELINE 0x2000 /* assume single line */
8782bef2	290	#define PMf_FOLD 0x4000 /* case insensitivity */
a0d0e21e	291	#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
79072805	292
8782bef2	293	/* mask of bits stored in regexp->reganch */
	294	#define PMf_COMPILETIME (PMf_MULTILINE\|PMf_SINGLELINE\|PMf_LOCALE\|PMf_FOLD\|PMf_EXTENDED)
	295
cb55de95	296	#ifdef USE_ITHREADS
05ec9bb3	297
cb55de95	298	# define PmopSTASHPV(o) ((o)->op_pmstashpv)
05ec9bb3	299	# define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
cb55de95	300	# define PmopSTASH(o) (PmopSTASHPV(o) \
cb55de95	301	? gv_stashpv(PmopSTASHPV(o),GV_ADD) : Nullhv)
05ec9bb3	302	# define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME(hv) : Nullch))
	303	# define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
	304
cb55de95	305	#else
	306	# define PmopSTASH(o) ((o)->op_pmstash)
	307	# define PmopSTASH_set(o,hv) ((o)->op_pmstash = (hv))
	308	# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME(PmopSTASH(o)) : Nullch)
	309	/* op_pmstash is not refcounted */
	310	# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
05ec9bb3	311	# define PmopSTASH_free(o)
cb55de95	312	#endif
cb55de95	313
79072805	314	struct svop {
	315	BASEOP
	316	SV * op_sv;
	317	};
	318
7934575e	319	struct padop {
79072805	320	BASEOP
7934575e	321	PADOFFSET op_padix;
79072805	322	};
	323
	324	struct pvop {
	325	BASEOP
	326	char * op_pv;
	327	};
	328
79072805	329	struct loop {
	330	BASEOP
	331	OP * op_first;
	332	OP * op_last;
79072805	333	OP * op_redoop;
	334	OP * op_nextop;
	335	OP * op_lastop;
	336	};
	337
350de78d	338	#define cUNOPx(o) ((UNOP*)o)
	339	#define cBINOPx(o) ((BINOP*)o)
	340	#define cLISTOPx(o) ((LISTOP*)o)
	341	#define cLOGOPx(o) ((LOGOP*)o)
	342	#define cPMOPx(o) ((PMOP*)o)
	343	#define cSVOPx(o) ((SVOP*)o)
	344	#define cPADOPx(o) ((PADOP*)o)
	345	#define cPVOPx(o) ((PVOP*)o)
	346	#define cCOPx(o) ((COP*)o)
	347	#define cLOOPx(o) ((LOOP*)o)
	348
	349	#define cUNOP cUNOPx(PL_op)
	350	#define cBINOP cBINOPx(PL_op)
	351	#define cLISTOP cLISTOPx(PL_op)
	352	#define cLOGOP cLOGOPx(PL_op)
	353	#define cPMOP cPMOPx(PL_op)
	354	#define cSVOP cSVOPx(PL_op)
	355	#define cPADOP cPADOPx(PL_op)
	356	#define cPVOP cPVOPx(PL_op)
	357	#define cCOP cCOPx(PL_op)
	358	#define cLOOP cLOOPx(PL_op)
	359
	360	#define cUNOPo cUNOPx(o)
	361	#define cBINOPo cBINOPx(o)
	362	#define cLISTOPo cLISTOPx(o)
	363	#define cLOGOPo cLOGOPx(o)
	364	#define cPMOPo cPMOPx(o)
	365	#define cSVOPo cSVOPx(o)
	366	#define cPADOPo cPADOPx(o)
	367	#define cPVOPo cPVOPx(o)
	368	#define cCOPo cCOPx(o)
	369	#define cLOOPo cLOOPx(o)
	370
	371	#define kUNOP cUNOPx(kid)
	372	#define kBINOP cBINOPx(kid)
	373	#define kLISTOP cLISTOPx(kid)
	374	#define kLOGOP cLOGOPx(kid)
	375	#define kPMOP cPMOPx(kid)
	376	#define kSVOP cSVOPx(kid)
	377	#define kPADOP cPADOPx(kid)
	378	#define kPVOP cPVOPx(kid)
	379	#define kCOP cCOPx(kid)
	380	#define kLOOP cLOOPx(kid)
	381
	382
	383	#ifdef USE_ITHREADS
dd2155a4	384	# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
743e66e6	385	# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
7766f137	386	# define IS_PADCONST(v) (v && SvREADONLY(v))
7766f137	387	# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
dd2155a4	388	? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
638eceb6	389	# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
dd2155a4	390	? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
350de78d	391	#else
638eceb6	392	# define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
743e66e6	393	# define IS_PADGV(v) FALSE
7766f137	394	# define IS_PADCONST(v) FALSE
7766f137	395	# define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
638eceb6	396	# define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
350de78d	397	#endif
79072805	398
638eceb6	399	#define cGVOP_gv cGVOPx_gv(PL_op)
	400	#define cGVOPo_gv cGVOPx_gv(o)
	401	#define kGVOP_gv cGVOPx_gv(kid)
	402	#define cSVOP_sv cSVOPx_sv(PL_op)
	403	#define cSVOPo_sv cSVOPx_sv(o)
	404	#define kSVOP_sv cSVOPx_sv(kid)
7766f137	405
79072805	406	#define Nullop Null(OP*)
79072805	407
91135acb	408	/* Lowest byte-and-a-bit of PL_opargs */
a0d0e21e	409	#define OA_MARK 1
	410	#define OA_FOLDCONST 2
	411	#define OA_RETSCALAR 4
	412	#define OA_TARGET 8
	413	#define OA_RETINTEGER 16
	414	#define OA_OTHERINT 32
	415	#define OA_DANGEROUS 64
	416	#define OA_DEFGV 128
b162f9ea	417	#define OA_TARGLEX 256
a0d0e21e	418
db173bac	419	/* The next 4 bits encode op class information */
b162f9ea	420	#define OCSHIFT 9
	421
	422	#define OA_CLASS_MASK (15 << OCSHIFT)
	423
	424	#define OA_BASEOP (0 << OCSHIFT)
	425	#define OA_UNOP (1 << OCSHIFT)
	426	#define OA_BINOP (2 << OCSHIFT)
	427	#define OA_LOGOP (3 << OCSHIFT)
1a67a97c	428	#define OA_LISTOP (4 << OCSHIFT)
	429	#define OA_PMOP (5 << OCSHIFT)
	430	#define OA_SVOP (6 << OCSHIFT)
7934575e	431	#define OA_PADOP (7 << OCSHIFT)
1a67a97c	432	#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
	433	#define OA_LOOP (9 << OCSHIFT)
	434	#define OA_COP (10 << OCSHIFT)
	435	#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
	436	#define OA_FILESTATOP (12 << OCSHIFT)
	437	#define OA_LOOPEXOP (13 << OCSHIFT)
b162f9ea	438
b162f9ea	439	#define OASHIFT 13
a0d0e21e	440
4369b173	441	/* Remaining nybbles of PL_opargs */
a0d0e21e	442	#define OA_SCALAR 1
	443	#define OA_LIST 2
	444	#define OA_AVREF 3
	445	#define OA_HVREF 4
	446	#define OA_CVREF 5
	447	#define OA_FILEREF 6
	448	#define OA_SCALARREF 7
	449	#define OA_OPTIONAL 8
	450
534825c4	451	#ifdef USE_ITHREADS
	452	# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
	453	# define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
	454	# define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
	455	# define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
534825c4	456	#else
	457	# define OP_REFCNT_INIT NOOP
	458	# define OP_REFCNT_LOCK NOOP
	459	# define OP_REFCNT_UNLOCK NOOP
	460	# define OP_REFCNT_TERM NOOP
534825c4	461	#endif
e4783991	462
282f25c9	463	#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
	464	#define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : Nullop)
	465	#define OpREFCNT_dec(o) (--(o)->op_targ)
	466
e4783991	467	/* flags used by Perl_load_module() */
	468	#define PERL_LOADMOD_DENY 0x1
	469	#define PERL_LOADMOD_NOIMPORT 0x2
	470	#define PERL_LOADMOD_IMPORT_OPS 0x4
e5dd39fc	471
e5dd39fc	472	#ifdef USE_REENTRANT_API
10bc17b6	473	#include "reentr.h"
e5dd39fc	474	#endif
e5dd39fc	475