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/* op.h
*
* Copyright (c) 1991-2001, Larry Wall
*
* 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).
*/
typedef U32 PADOFFSET;
#define NOT_IN_PAD ((PADOFFSET) -1)
#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)
/*
=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 */
/* 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. */
#define OPpASSIGN_HASH 32 /* Assigning to possible pseudohash. */
/* 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. */
/* 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, OP_PRTF, OP_SPRINTF, OP_FTTEXT, OP_FTBINARY, */
/* string comparisons, and case changers. */
#define OPpLOCALE 64 /* Use locale */
/* 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 */
#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 */
REGEXP * op_pmregexp; /* compiled expression */
U16 op_pmflags;
U16 op_pmpermflags;
U8 op_pmdynflags;
};
#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 PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
#define PMf_ONCE 0x0002 /* use pattern only once per reset */
#define PMf_REVERSED 0x0004 /* Should be matched right->left */
#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)
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*)PL_curpad[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 : PL_curpad[(v)->op_targ])
# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
? &cSVOPx(v)->op_sv : &PL_curpad[(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 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
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