[perl5.git] / op.h

/*    op.h
 *
 *    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.
 *
 */

/*
 * 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_opt		Whether or not the op has been optimised by the
 *			peephole optimiser.
 *	op_static	Whether or not the op is statically defined.
 *			This flag is used by the B::C compiler backend
 *			and indicates that the op should not be freed.
 *	op_spare	Five spare bits!
 *	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;		\
    unsigned	op_type:9;		\
    unsigned	op_opt:1;		\
    unsigned	op_static:1;		\
    unsigned	op_spare:5;		\
    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) */
				/*  On OP_AELEMFAST, indiciates pad var */

/* 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
    /* 16 is used for OPpTARGET_MY */
#define OPpTRANS_COMPLEMENT	32
#define OPpTRANS_GROWS		64
#define OPpTRANS_DELETE		128
#define OPpTRANS_ALL	(OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|OPpTRANS_SQUASH|OPpTRANS_COMPLEMENT|OPpTRANS_GROWS|OPpTRANS_DELETE)

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

/* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */
#define OPpDEREF		(32|64)	/* autovivify: 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, OP_ENTERITER 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_ENTERITER and OP_ITER */
#define OPpITER_REVERSED	4	/* for (reverse ...) */

/* Private for OP_CONST */
#define	OPpCONST_SHORTCIRCUIT	4	/* eg the constant 5 in (5 || foo) */
#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	/* Reversed sort */
#define OPpSORT_INPLACE		8	/* sort in-place; eg @a = sort @a */
#define OPpSORT_DESCEND		16	/* 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*/

/* Private of OP_FTXXX */
#define OPpFT_ACCESS		2	/* use filetest 'access' */
#define OPpFT_STACKED		4	/* stacked filetest, as in "-f -x $f" */
#define OP_IS_FILETEST_ACCESS(op) 		\
	(((op)->op_type) == OP_FTRREAD  ||	\
	 ((op)->op_type) == OP_FTRWRITE ||	\
	 ((op)->op_type) == OP_FTREXEC  ||	\
	 ((op)->op_type) == OP_FTEREAD  ||	\
	 ((op)->op_type) == OP_FTEWRITE ||	\
	 ((op)->op_type) == OP_FTEEXEC)

/* Private for OP_(MAP|GREP)(WHILE|START) */
#define OPpGREP_LEX		2	/* iterate over lexical $_ */
    
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

#if defined(PL_OP_SLAB_ALLOC)
#define NewOp(m,var,c,type)	\
	(var = (type *) Perl_Slab_Alloc(aTHX_ m,c*sizeof(type)))
#define NewOpSz(m,var,size)	\
	(var = (OP *) Perl_Slab_Alloc(aTHX_ m,size))
#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
#else
#define NewOp(m, var, c, type) Newz(m, var, c, type)
#define NewOpSz(m, var, size)	\
	(var = (OP*)safemalloc(size), memzero(var, size))
#define FreeOp(p) Safefree(p)
#endif
Commit	Line	Data
a0d0e21e	1	/* op.h
79072805	2	*
4bb101f2	3	* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
b5f8cc5c	4	* 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
79072805 LW	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 LW	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.
2814eb74 PJ	20	* op_opt Whether or not the op has been optimised by the
	21	* peephole optimiser.
	22	* op_static Whether or not the op is statically defined.
	23	* This flag is used by the B::C compiler backend
	24	* and indicates that the op should not be freed.
	25	* op_spare Five spare bits!
79072805 LW	26	* op_flags Flags common to all operations. See OPf_* below.
	27	* op_private Flags peculiar to a particular operation (BUT,
	28	* by default, set to the number of children until
	29	* the operation is privatized by a check routine,
	30	* which may or may not check number of children).
	31	*/
	32
4633a7c4	33	#ifdef DEBUGGING_OPS
79072805 LW	34	#define OPCODE opcode
	35	#else
	36	#define OPCODE U16
	37	#endif
	38
0f4eea8f DL	39	#ifdef BASEOP_DEFINITION
	40	#define BASEOP BASEOP_DEFINITION
	41	#else
79072805 LW	42	#define BASEOP \
	43	OP* op_next; \
	44	OP* op_sibling; \
4f63d024	45	OP* (CPERLscope(*op_ppaddr))(pTHX); \
79072805	46	PADOFFSET op_targ; \
2814eb74 PJ	47	unsigned op_type:9; \
	48	unsigned op_opt:1; \
	49	unsigned op_static:1; \
	50	unsigned op_spare:5; \
a0d0e21e LW	51	U8 op_flags; \
a0d0e21e LW	52	U8 op_private;
0f4eea8f	53	#endif
79072805	54
54310121	55	#define OP_GIMME(op,dfl) \
	56	(((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \
	57	((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
	58	((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \
	59	dfl)
	60
954c1994	61	/*
ccfc67b7 JH	62	=head1 "Gimme" Values
ccfc67b7 JH	63
954c1994 GS	64	=for apidoc Amn\|U32\|GIMME_V
954c1994 GS	65	The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
91e74348	66	C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
954c1994 GS	67	respectively.
	68
	69	=for apidoc Amn\|U32\|GIMME
	70	A backward-compatible version of C<GIMME_V> which can only return
	71	C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
	72	Deprecated. Use C<GIMME_V> instead.
	73
	74	=cut
	75	*/
	76
533c011a	77	#define GIMME_V OP_GIMME(PL_op, block_gimme())
79072805 LW	78
79072805 LW	79	/* Public flags */
54310121	80
	81	#define OPf_WANT 3 /* Mask for "want" bits: */
	82	#define OPf_WANT_VOID 1 /* Want nothing */
	83	#define OPf_WANT_SCALAR 2 /* Want single value */
	84	#define OPf_WANT_LIST 3 /* Want list of any length */
79072805 LW	85	#define OPf_KIDS 4 /* There is a firstborn child. */
79072805 LW	86	#define OPf_PARENS 8 /* This operator was parenthesized. */
463ee0b2	87	/* (Or block needs explicit scope entry.) */
a0d0e21e LW	88	#define OPf_REF 16 /* Certified reference. */
	89	/* (Return container, not containee). */
	90	#define OPf_MOD 32 /* Will modify (lvalue). */
	91	#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
79072805 LW	92	#define OPf_SPECIAL 128 /* Do something weird for this op: */
	93	/* On local LVAL, don't init local value. */
	94	/* On OP_SORT, subroutine is inlined. */
	95	/* On OP_NOT, inversion was implicit. */
a0d0e21e	96	/* On OP_LEAVE, don't restore curpm. */
79072805 LW	97	/* On truncate, we truncate filehandle */
	98	/* On control verbs, we saw no label */
	99	/* On flipflop, we saw ... instead of .. */
	100	/* On UNOPs, saw bare parens, e.g. eof(). */
a0d0e21e	101	/* On OP_ENTERSUB \|\| OP_NULL, saw a "do". */
afebc493	102	/* On OP_EXISTS, treat av as av, not avhv. */
f2ec2afd	103	/* On OP_(ENTER\|LEAVE)EVAL, don't clear $@ */
54b9620d	104	/* On OP_ENTERITER, loop var is per-thread */
497711e7 GS	105	/* On pushre, re is /\s+/ imp. by split " " */
497711e7 GS	106	/* On regcomp, "use re 'eval'" was in scope */
7c6fadd6	107	/* On OP_READLINE, was <$filehandle> */
4e3399f9	108	/* On RV2[SG]V, don't create GV--in defined()*/
5df8de69 DM	109	/* On OP_DBSTATE, indicates breakpoint
5df8de69 DM	110	* (runtime property) */
6a077020	111	/* On OP_AELEMFAST, indiciates pad var */
79072805	112
54310121	113	/* old names; don't use in new code, but don't break them, either */
d91ab173 GS	114	#define OPf_LIST OPf_WANT_LIST
d91ab173 GS	115	#define OPf_KNOW OPf_WANT
954c1994	116
54310121	117	#define GIMME \
62a559b8 NIS	118	(PL_op->op_flags & OPf_WANT \
62a559b8 NIS	119	? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
d91ab173 GS	120	? G_ARRAY \
	121	: G_SCALAR) \
	122	: dowantarray())
54310121	123
d41ff1b8 GS	124	/* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
	125	* bits of PL_hints in op_private */
	126
a0d0e21e	127	/* Private for lvalues */
cd06dffe	128	#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
a0d0e21e	129
7934575e GS	130	/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
	131	#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
	132
a0d0e21e LW	133	/* Private for OP_AASSIGN */
	134	#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
	135
	136	/* Private for OP_SASSIGN */
	137	#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
79072805	138
c90c0ff4	139	/* Private for OP_MATCH and OP_SUBST{,CONST} */
	140	#define OPpRUNTIME 64 /* Pattern coming in on the stack */
	141
79072805	142	/* Private for OP_TRANS */
4757a243 LW	143	#define OPpTRANS_FROM_UTF 1
4757a243 LW	144	#define OPpTRANS_TO_UTF 2
383e7cdd	145	#define OPpTRANS_IDENTICAL 4 /* right side is same as left */
4757a243	146	#define OPpTRANS_SQUASH 8
59f00321	147	/* 16 is used for OPpTARGET_MY */
4757a243 LW	148	#define OPpTRANS_COMPLEMENT 32
4757a243 LW	149	#define OPpTRANS_GROWS 64
59f00321 RGS	150	#define OPpTRANS_DELETE 128
59f00321 RGS	151	#define OPpTRANS_ALL (OPpTRANS_FROM_UTF\|OPpTRANS_TO_UTF\|OPpTRANS_IDENTICAL\|OPpTRANS_SQUASH\|OPpTRANS_COMPLEMENT\|OPpTRANS_GROWS\|OPpTRANS_DELETE)
79072805 LW	152
79072805 LW	153	/* Private for OP_REPEAT */
a0d0e21e	154	#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805	155
cf2dc985	156	/* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */
314d4778	157	#define OPpDEREF (32\|64) /* autovivify: Want ref to something: */
5f05dabc	158	#define OPpDEREF_AV 32 /* Want ref to AV. */
	159	#define OPpDEREF_HV 64 /* Want ref to HV. */
	160	#define OPpDEREF_SV (32\|64) /* Want ref to SV. */
68dc0745	161	/* OP_ENTERSUB only */
68dc0745	162	#define OPpENTERSUB_DB 16 /* Debug subroutine. */
d3011074	163	#define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
95f0a2f1	164	#define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
7a52d87a	165	/* OP_RV2CV only */
68dc0745	166	#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
9675f7ac	167	#define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
cd06dffe	168	#define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
76cd736e GS	169	/* OP_GV only */
76cd736e GS	170	#define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
68dc0745	171	/* OP_?ELEM only */
68dc0745	172	#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
241416b8	173	/* OP_RV2?V, OP_GVSV, OP_ENTERITER only */
78f9721b SM	174	#define OPpOUR_INTRO 16 /* Variable was in an our() */
	175	/* OP_RV2[AH]V, OP_PAD[AH]V, OP_[AH]ELEM */
	176	#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
192587c2	177	/* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
79072805	178
b162f9ea IZ	179	/* Private for OPs with TARGLEX */
	180	/* (lower bits may carry MAXARG) */
	181	#define OPpTARGET_MY 16 /* Target is PADMY. */
	182
ef3e5ea9 NC	183	/* Private for OP_ENTERITER and OP_ITER */
	184	#define OPpITER_REVERSED 4 /* for (reverse ...) */
	185
79072805	186	/* Private for OP_CONST */
e7fec78e	187	#define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 \|\| foo) */
7a52d87a	188	#define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
748a9306 LW	189	#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
748a9306 LW	190	#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
a0d0e21e	191	#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
599cee73	192	#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
79072805 LW	193
79072805 LW	194	/* Private for OP_FLIP/FLOP */
a0d0e21e	195	#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805	196
ed6116ce	197	/* Private for OP_LIST */
a0d0e21e LW	198	#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
a0d0e21e LW	199
5f05dabc	200	/* Private for OP_DELETE */
54310121	201	#define OPpSLICE 64 /* Operating on a list of keys */
5f05dabc	202
afebc493 GS	203	/* Private for OP_EXISTS */
	204	#define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
	205
9c007264 JH	206	/* Private for OP_SORT */
	207	#define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
	208	#define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
eb209983	209	#define OPpSORT_REVERSE 4 /* Reversed sort */
fe1bc4cf	210	#define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */
eb209983	211	#define OPpSORT_DESCEND 16 /* Descending sort */
224a4551 MB	212	/* Private for OP_THREADSV */
224a4551 MB	213	#define OPpDONE_SVREF 64 /* Been through newSVREF once */
554b3eca	214
16fe6d59 GS	215	/* Private for OP_OPEN and OP_BACKTICK */
	216	#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
	217	#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
	218	#define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
	219	#define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
	220
96e176bf CL	221	/* Private for OP_EXIT, HUSH also for OP_DIE */
96e176bf CL	222	#define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
d98f61e7 GS	223	#define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
d98f61e7 GS	224
1af34c76 JH	225	/* Private of OP_FTXXX */
1af34c76 JH	226	#define OPpFT_ACCESS 2 /* use filetest 'access' */
fbb0b3b3	227	#define OPpFT_STACKED 4 /* stacked filetest, as in "-f -x $f" */
1af34c76 JH	228	#define OP_IS_FILETEST_ACCESS(op) \
	229	(((op)->op_type) == OP_FTRREAD \|\| \
	230	((op)->op_type) == OP_FTRWRITE \|\| \
	231	((op)->op_type) == OP_FTREXEC \|\| \
	232	((op)->op_type) == OP_FTEREAD \|\| \
	233	((op)->op_type) == OP_FTEWRITE \|\| \
	234	((op)->op_type) == OP_FTEEXEC)
	235
59f00321 RGS	236	/* Private for OP_(MAP\|GREP)(WHILE\|START) */
	237	#define OPpGREP_LEX 2 /* iterate over lexical $_ */
	238
79072805 LW	239	struct op {
	240	BASEOP
	241	};
	242
	243	struct unop {
	244	BASEOP
	245	OP * op_first;
	246	};
	247
	248	struct binop {
	249	BASEOP
	250	OP * op_first;
	251	OP * op_last;
	252	};
	253
	254	struct logop {
	255	BASEOP
	256	OP * op_first;
	257	OP * op_other;
	258	};
	259
79072805 LW	260	struct listop {
	261	BASEOP
	262	OP * op_first;
	263	OP * op_last;
79072805 LW	264	};
	265
	266	struct pmop {
	267	BASEOP
	268	OP * op_first;
	269	OP * op_last;
79072805 LW	270	OP * op_pmreplroot;
	271	OP * op_pmreplstart;
	272	PMOP * op_pmnext; /* list of all scanpats */
1fcf4c12	273	#ifdef USE_ITHREADS
fd1bc7eb	274	IV op_pmoffset;
1fcf4c12 AB	275	#else
	276	REGEXP * op_pmregexp; /* compiled expression */
	277	#endif
699a3330	278	U32 op_pmflags;
e2509266	279	U32 op_pmpermflags;
48c036b1	280	U8 op_pmdynflags;
cb55de95 JH	281	#ifdef USE_ITHREADS
	282	char * op_pmstashpv;
	283	#else
	284	HV * op_pmstash;
	285	#endif
79072805	286	};
a0d0e21e	287
1fcf4c12	288	#ifdef USE_ITHREADS
ba89bb6e	289	#define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
dd7d6c2b	290	#define PM_SETRE(o,r) STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
5f8cb046 DM	291	#define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
5f8cb046 DM	292	#define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
1fcf4c12	293	#else
b9ed2502 AB	294	#define PM_GETRE(o) ((o)->op_pmregexp)
b9ed2502 AB	295	#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
5f8cb046 DM	296	#define PM_GETRE_SAFE PM_GETRE
5f8cb046 DM	297	#define PM_SETRE_SAFE PM_SETRE
1fcf4c12	298	#endif
4825b64b	299
48c036b1	300	#define PMdf_USED 0x01 /* pm has been used once already */
b3eb6a9b	301	#define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */
84e09d5e JH	302	#define PMdf_UTF8 0x04 /* pm compiled from utf8 data */
	303	#define PMdf_DYN_UTF8 0x08
	304
	305	#define PMdf_CMP_UTF8 (PMdf_UTF8\|PMdf_DYN_UTF8)
48c036b1	306
b3eb6a9b	307	#define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
a0d0e21e	308	#define PMf_ONCE 0x0002 /* use pattern only once per reset */
699a3330	309	#define PMf_UNUSED 0x0004 /* free for use */
ce862d02	310	#define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
a0d0e21e	311	#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
8782bef2	312	#define PMf_WHITE 0x0020 /* pattern is \s+ */
a0d0e21e LW	313	#define PMf_CONST 0x0040 /* subst replacement is constant */
	314	#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
	315	#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
c90c0ff4	316	#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
a0d0e21e	317	#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
8782bef2	318	#define PMf_LOCALE 0x0800 /* use locale for character types */
a0d0e21e LW	319	#define PMf_MULTILINE 0x1000 /* assume multiple lines */
a0d0e21e LW	320	#define PMf_SINGLELINE 0x2000 /* assume single line */
8782bef2	321	#define PMf_FOLD 0x4000 /* case insensitivity */
a0d0e21e	322	#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
79072805	323
8782bef2 GB	324	/* mask of bits stored in regexp->reganch */
	325	#define PMf_COMPILETIME (PMf_MULTILINE\|PMf_SINGLELINE\|PMf_LOCALE\|PMf_FOLD\|PMf_EXTENDED)
	326
cb55de95	327	#ifdef USE_ITHREADS
05ec9bb3	328
cb55de95	329	# define PmopSTASHPV(o) ((o)->op_pmstashpv)
05ec9bb3	330	# define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
cb55de95 JH	331	# define PmopSTASH(o) (PmopSTASHPV(o) \
cb55de95 JH	332	? gv_stashpv(PmopSTASHPV(o),GV_ADD) : Nullhv)
05ec9bb3 NIS	333	# define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME(hv) : Nullch))
	334	# define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
	335
cb55de95 JH	336	#else
	337	# define PmopSTASH(o) ((o)->op_pmstash)
	338	# define PmopSTASH_set(o,hv) ((o)->op_pmstash = (hv))
	339	# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME(PmopSTASH(o)) : Nullch)
	340	/* op_pmstash is not refcounted */
	341	# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
05ec9bb3	342	# define PmopSTASH_free(o)
cb55de95 JH	343	#endif
cb55de95 JH	344
79072805 LW	345	struct svop {
	346	BASEOP
	347	SV * op_sv;
	348	};
	349
7934575e	350	struct padop {
79072805	351	BASEOP
7934575e	352	PADOFFSET op_padix;
79072805 LW	353	};
	354
	355	struct pvop {
	356	BASEOP
	357	char * op_pv;
	358	};
	359
79072805 LW	360	struct loop {
	361	BASEOP
	362	OP * op_first;
	363	OP * op_last;
79072805 LW	364	OP * op_redoop;
	365	OP * op_nextop;
	366	OP * op_lastop;
	367	};
	368
350de78d GS	369	#define cUNOPx(o) ((UNOP*)o)
	370	#define cBINOPx(o) ((BINOP*)o)
	371	#define cLISTOPx(o) ((LISTOP*)o)
	372	#define cLOGOPx(o) ((LOGOP*)o)
	373	#define cPMOPx(o) ((PMOP*)o)
	374	#define cSVOPx(o) ((SVOP*)o)
	375	#define cPADOPx(o) ((PADOP*)o)
	376	#define cPVOPx(o) ((PVOP*)o)
	377	#define cCOPx(o) ((COP*)o)
	378	#define cLOOPx(o) ((LOOP*)o)
	379
	380	#define cUNOP cUNOPx(PL_op)
	381	#define cBINOP cBINOPx(PL_op)
	382	#define cLISTOP cLISTOPx(PL_op)
	383	#define cLOGOP cLOGOPx(PL_op)
	384	#define cPMOP cPMOPx(PL_op)
	385	#define cSVOP cSVOPx(PL_op)
	386	#define cPADOP cPADOPx(PL_op)
	387	#define cPVOP cPVOPx(PL_op)
	388	#define cCOP cCOPx(PL_op)
	389	#define cLOOP cLOOPx(PL_op)
	390
	391	#define cUNOPo cUNOPx(o)
	392	#define cBINOPo cBINOPx(o)
	393	#define cLISTOPo cLISTOPx(o)
	394	#define cLOGOPo cLOGOPx(o)
	395	#define cPMOPo cPMOPx(o)
	396	#define cSVOPo cSVOPx(o)
	397	#define cPADOPo cPADOPx(o)
	398	#define cPVOPo cPVOPx(o)
	399	#define cCOPo cCOPx(o)
	400	#define cLOOPo cLOOPx(o)
	401
	402	#define kUNOP cUNOPx(kid)
	403	#define kBINOP cBINOPx(kid)
	404	#define kLISTOP cLISTOPx(kid)
	405	#define kLOGOP cLOGOPx(kid)
	406	#define kPMOP cPMOPx(kid)
	407	#define kSVOP cSVOPx(kid)
	408	#define kPADOP cPADOPx(kid)
	409	#define kPVOP cPVOPx(kid)
	410	#define kCOP cCOPx(kid)
	411	#define kLOOP cLOOPx(kid)
	412
	413
	414	#ifdef USE_ITHREADS
dd2155a4	415	# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
743e66e6	416	# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
7766f137 GS	417	# define IS_PADCONST(v) (v && SvREADONLY(v))
7766f137 GS	418	# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
dd2155a4	419	? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
638eceb6	420	# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
dd2155a4	421	? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
350de78d	422	#else
638eceb6	423	# define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
743e66e6	424	# define IS_PADGV(v) FALSE
7766f137 GS	425	# define IS_PADCONST(v) FALSE
7766f137 GS	426	# define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
638eceb6	427	# define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
350de78d	428	#endif
79072805	429
638eceb6 GS	430	#define cGVOP_gv cGVOPx_gv(PL_op)
	431	#define cGVOPo_gv cGVOPx_gv(o)
	432	#define kGVOP_gv cGVOPx_gv(kid)
	433	#define cSVOP_sv cSVOPx_sv(PL_op)
	434	#define cSVOPo_sv cSVOPx_sv(o)
	435	#define kSVOP_sv cSVOPx_sv(kid)
7766f137	436
79072805 LW	437	#define Nullop Null(OP*)
79072805 LW	438
91135acb	439	/* Lowest byte-and-a-bit of PL_opargs */
a0d0e21e LW	440	#define OA_MARK 1
	441	#define OA_FOLDCONST 2
	442	#define OA_RETSCALAR 4
	443	#define OA_TARGET 8
	444	#define OA_RETINTEGER 16
	445	#define OA_OTHERINT 32
	446	#define OA_DANGEROUS 64
	447	#define OA_DEFGV 128
b162f9ea	448	#define OA_TARGLEX 256
a0d0e21e	449
db173bac	450	/* The next 4 bits encode op class information */
b162f9ea IZ	451	#define OCSHIFT 9
	452
	453	#define OA_CLASS_MASK (15 << OCSHIFT)
	454
	455	#define OA_BASEOP (0 << OCSHIFT)
	456	#define OA_UNOP (1 << OCSHIFT)
	457	#define OA_BINOP (2 << OCSHIFT)
	458	#define OA_LOGOP (3 << OCSHIFT)
1a67a97c SM	459	#define OA_LISTOP (4 << OCSHIFT)
	460	#define OA_PMOP (5 << OCSHIFT)
	461	#define OA_SVOP (6 << OCSHIFT)
7934575e	462	#define OA_PADOP (7 << OCSHIFT)
1a67a97c SM	463	#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
	464	#define OA_LOOP (9 << OCSHIFT)
	465	#define OA_COP (10 << OCSHIFT)
	466	#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
	467	#define OA_FILESTATOP (12 << OCSHIFT)
	468	#define OA_LOOPEXOP (13 << OCSHIFT)
b162f9ea IZ	469
b162f9ea IZ	470	#define OASHIFT 13
a0d0e21e	471
4369b173	472	/* Remaining nybbles of PL_opargs */
a0d0e21e LW	473	#define OA_SCALAR 1
	474	#define OA_LIST 2
	475	#define OA_AVREF 3
	476	#define OA_HVREF 4
	477	#define OA_CVREF 5
	478	#define OA_FILEREF 6
	479	#define OA_SCALARREF 7
	480	#define OA_OPTIONAL 8
	481
534825c4 GS	482	#ifdef USE_ITHREADS
	483	# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
	484	# define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
	485	# define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
	486	# define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
534825c4 GS	487	#else
	488	# define OP_REFCNT_INIT NOOP
	489	# define OP_REFCNT_LOCK NOOP
	490	# define OP_REFCNT_UNLOCK NOOP
	491	# define OP_REFCNT_TERM NOOP
534825c4	492	#endif
e4783991	493
282f25c9 JH	494	#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
	495	#define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : Nullop)
	496	#define OpREFCNT_dec(o) (--(o)->op_targ)
	497
e4783991 GS	498	/* flags used by Perl_load_module() */
	499	#define PERL_LOADMOD_DENY 0x1
	500	#define PERL_LOADMOD_NOIMPORT 0x2
	501	#define PERL_LOADMOD_IMPORT_OPS 0x4
e5dd39fc AB	502
e5dd39fc AB	503	#ifdef USE_REENTRANT_API
10bc17b6	504	#include "reentr.h"
e5dd39fc AB	505	#endif
e5dd39fc AB	506
c7e45529 AE	507	#if defined(PL_OP_SLAB_ALLOC)
c7e45529 AE	508	#define NewOp(m,var,c,type) \
113b9ccf	509	(var = (type ) Perl_Slab_Alloc(aTHX_ m,csizeof(type)))
c7e45529	510	#define NewOpSz(m,var,size) \
113b9ccf	511	(var = (OP *) Perl_Slab_Alloc(aTHX_ m,size))
c7e45529 AE	512	#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
	513	#else
	514	#define NewOp(m, var, c, type) Newz(m, var, c, type)
113b9ccf JH	515	#define NewOpSz(m, var, size) \
113b9ccf JH	516	(var = (OP*)safemalloc(size), memzero(var, size))
c7e45529 AE	517	#define FreeOp(p) Safefree(p)
c7e45529 AE	518	#endif