-/* $RCSfile: arg.h,v $$Revision: 4.1 $$Date: 92/08/07 17:18:16 $
+/* op.h
*
- * Copyright (c) 1991, Larry Wall
+ * Copyright (c) 1991-2000, 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.
*
- * $Log: arg.h,v $
*/
/*
* which may or may not check number of children).
*/
-typedef U16 PADOFFSET;
+typedef U32 PADOFFSET;
+#define NOT_IN_PAD ((PADOFFSET) -1)
-#ifdef DEBUGGING
+#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* (*op_ppaddr)(); \
+ OP* (CPERLscope(*op_ppaddr))(pTHX); \
PADOFFSET op_targ; \
OPCODE op_type; \
U16 op_seq; \
- char op_flags; \
- char op_private;
+ 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 array 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.
-#define GIMME (op->op_flags & OPf_KNOW ? op->op_flags & OPf_LIST : getgimme(op))
+=cut
+*/
+
+#define GIMME_V OP_GIMME(PL_op, block_gimme())
/* Public flags */
-#define OPf_LIST 1 /* Do operator in list context. */
-#define OPf_KNOW 2 /* Context is known. */
+
+#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_STACKED 16 /* Some arg is arriving on the stack. */
-#define OPf_LVAL 32 /* Certified reference (lvalue). */
-#define OPf_INTRO 64 /* Lvalue must be localized */
+#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 file tests, we fstat filehandle */
+ /* 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_ENTERSUBR || OP_NULL, saw a "do". */
+ /* 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 " " */
+
+/* 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 OP_ASSIGN */
-#define OPpASSIGN_COMMON 1 /* Left & right have syms in common. */
+/* 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_SQUASH 1
-#define OPpTRANS_DELETE 2
-#define OPpTRANS_COMPLEMENT 4
+#define OPpTRANS_FROM_UTF 1
+#define OPpTRANS_TO_UTF 2
+#define OPpTRANS_IDENTICAL 4
+ /* When CU or UC, means straight latin-1 to utf-8 or vice versa */
+ /* Otherwise, IDENTICAL means the right side is the same as the left */
+#define OPpTRANS_SQUASH 8
+#define OPpTRANS_DELETE 16
+#define OPpTRANS_COMPLEMENT 32
+#define OPpTRANS_GROWS 64
/* Private for OP_REPEAT */
-#define OPpREPEAT_DOLIST 1 /* List replication. */
+#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 /* Defer creation of array/hash elem */
+ /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
-/* Private for OP_SUBR */
-#define OPpSUBR_DB 1 /* Debug subroutine. */
+/* Private for OPs with TARGLEX */
+ /* (lower bits may carry MAXARG) */
+#define OPpTARGET_MY 16 /* Target is PADMY. */
/* Private for OP_CONST */
-#define OPpCONST_BARE 1 /* Was a bare word (filehandle?). */
+#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 1 /* Range arg potentially a line num. */
+#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
/* Private for OP_LIST */
-#define OPpLIST_GUESSED 1 /* Guessed that pushmark was needed. */
+#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 */
struct op {
BASEOP
OP * op_other;
};
-struct condop {
- BASEOP
- OP * op_first;
- OP * op_true;
- OP * op_false;
-};
-
struct listop {
BASEOP
OP * op_first;
OP * op_pmreplstart;
PMOP * op_pmnext; /* list of all scanpats */
REGEXP * op_pmregexp; /* compiled expression */
- SV * op_pmshort; /* for a fast bypass of execute() */
- short op_pmflags;
- char op_pmslen;
+ U16 op_pmflags;
+ U16 op_pmpermflags;
+ U8 op_pmdynflags;
};
-#define PMf_USED 1 /* pm has been used once already */
-#define PMf_ONCE 2 /* use pattern only once per reset */
-#define PMf_SCANFIRST 4 /* initial constant not anchored */
-#define PMf_ALL 8 /* initial constant is whole pat */
-#define PMf_SKIPWHITE 16 /* skip leading whitespace for split */
-#define PMf_FOLD 32 /* case insensitivity */
-#define PMf_CONST 64 /* subst replacement is constant */
-#define PMf_KEEP 128 /* keep 1st runtime pattern forever */
-#define PMf_GLOBAL 256 /* pattern had a g modifier */
-#define PMf_RUNTIME 512 /* pattern coming in on the stack */
-#define PMf_EVAL 1024 /* evaluating replacement as expr */
+
+#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 gvop {
+struct padop {
BASEOP
- GV * op_gv;
+ PADOFFSET op_padix;
};
struct pvop {
char * op_pv;
};
-struct cvop {
- BASEOP
- CV * op_cv;
- OP * op_cont;
-};
-
struct loop {
BASEOP
OP * op_first;
OP * op_lastop;
};
-#define cUNOP ((UNOP*)op)
-#define cBINOP ((BINOP*)op)
-#define cLISTOP ((LISTOP*)op)
-#define cLOGOP ((LOGOP*)op)
-#define cCONDOP ((CONDOP*)op)
-#define cPMOP ((PMOP*)op)
-#define cSVOP ((SVOP*)op)
-#define cGVOP ((GVOP*)op)
-#define cPVOP ((PVOP*)op)
-#define cCVOP ((CVOP*)op)
-#define cCOP ((COP*)op)
-#define cLOOP ((LOOP*)op)
-
-#define kUNOP ((UNOP*)kid)
-#define kBINOP ((BINOP*)kid)
-#define kLISTOP ((LISTOP*)kid)
-#define kLOGOP ((LOGOP*)kid)
-#define kCONDOP ((CONDOP*)kid)
-#define kPMOP ((PMOP*)kid)
-#define kSVOP ((SVOP*)kid)
-#define kGVOP ((GVOP*)kid)
-#define kPVOP ((PVOP*)kid)
-#define kCVOP ((CVOP*)kid)
-#define kCOP ((COP*)kid)
-#define kLOOP ((LOOP*)kid)
+#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
+
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