/* op.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006 by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 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.
* 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.
*
* See the comments in S_clear_yystack() for more
* details on the following three flags:
-
+ *
* op_latefree tell op_free() to clear this op (and free any kids)
* but not yet deallocate the struct. This means that
* the op may be safely op_free()d multiple times
* op_latefreed an op_latefree op has been op_free()d
* op_attached this op (sub)tree has been attached to a CV
*
- * op_spare two spare bits!
+ * op_spare three 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
* which may or may not check number of children).
*/
-#ifdef DEBUGGING_OPS
-#define OPCODE opcode
-#else
#define OPCODE U16
-#endif
#ifdef PERL_MAD
# define MADPROP_IN_BASEOP MADPROP* op_madprop;
PADOFFSET op_targ; \
unsigned op_type:9; \
unsigned op_opt:1; \
- unsigned op_static:1; \
unsigned op_latefree:1; \
unsigned op_latefreed:1; \
unsigned op_attached:1; \
- unsigned op_spare:2; \
+ unsigned op_spare:3; \
U8 op_flags; \
U8 op_private;
#endif
#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_CONST, value is the hints hash for
+ eval, so return a copy from pp_const() */
/* On OP_SORT, subroutine is inlined. */
/* On OP_NOT, inversion was implicit. */
/* On OP_LEAVE, don't restore curpm. */
/* On OP_EXISTS, treat av as av, not avhv. */
/* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
/* On OP_ENTERITER, loop var is per-thread */
- /* On pushre, re is /\s+/ imp. by split " " */
+ /* On pushre, rx is used as part of split, e.g. split " " */
/* On regcomp, "use re 'eval'" was in scope */
/* On OP_READLINE, was <$filehandle> */
/* On RV2[ACGHS]V, don't create GV--in
#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
#define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */
-/* Private for OP_[AS]ASSIGN */
-#define OPpASSIGN_STATE 32 /* Assign to a "state" variable */
-
/* Private for OP_MATCH and OP_SUBST{,CONST} */
#define OPpRUNTIME 64 /* Pattern coming in on the stack */
#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 */
+ /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM */
#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
/* OP_PADSV only */
#define OPpPAD_STATE 16 /* is a "state" pad */
/* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
/* OP_RV2GV only */
-#define OPpDONT_INIT_GV 8 /* Call gv_fetchpv with GV_NOINIT */
+#define OPpDONT_INIT_GV 4 /* Call gv_fetchpv with GV_NOINIT */
/* (Therefore will return whatever is currently in the symbol table, not
guaranteed to be a PVGV) */
#define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */
#define OPpSORT_STABLE 64 /* Use a stable algorithm */
-/* 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 */
BASEOP
OP * op_first;
OP * op_last;
- OP * op_pmreplroot; /* (type is really union {OP*,GV*,PADOFFSET}) */
- 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;
+ U32 op_pmflags;
+ union {
+ OP * op_pmreplroot; /* For OP_SUBST */
#ifdef USE_ITHREADS
- char * op_pmstashpv;
+ PADOFFSET op_pmtargetoff; /* For OP_PUSHRE */
#else
- HV * op_pmstash;
+ GV * op_pmtargetgv;
#endif
+ } op_pmreplrootu;
+ union {
+ OP * op_pmreplstart; /* Only used in OP_SUBST */
+#ifdef USE_ITHREADS
+ char * op_pmstashpv; /* Only used in OP_MATCH, with PMf_ONCE set */
+#else
+ HV * op_pmstash;
+#endif
+ } op_pmstashstartu;
};
#ifdef USE_ITHREADS
#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_RETAINT 0x00000040 /* taint $1 etc. if target tainted */
+#define PMf_ONCE 0x00000080 /* match successfully only once per
+ reset, with related flag RXf_USED
+ in re->extflags holding state.
+ This is used only for ?? matches,
+ and only on OP_MATCH and OP_QR */
+
+#define PMf_UNUSED 0x00000100 /* free for use */
+#define PMf_MAYBE_CONST 0x00000200 /* replacement contains variables */
+
+#define PMf_USED 0x00000400 /* PMf_ONCE has matched successfully.
+ Not used under threading. */
+
+#define PMf_CONST 0x00000800 /* subst replacement is constant */
+#define PMf_KEEP 0x00001000 /* keep 1st runtime pattern forever */
+#define PMf_GLOBAL 0x00002000 /* pattern had a g modifier */
+#define PMf_CONTINUE 0x00004000 /* don't reset pos() if //g fails */
+#define PMf_EVAL 0x00008000 /* evaluating replacement as expr */
/* The following flags have exact equivalents in regcomp.h with the prefix RXf_
- * which are stored in the regexp->extflags member.
+ * which are stored in the regexp->extflags member. If you change them here,
+ * you have to change them there, and vice versa.
*/
-#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 */
+#define PMf_MULTILINE 0x00000001 /* assume multiple lines */
+#define PMf_SINGLELINE 0x00000002 /* assume single line */
+#define PMf_FOLD 0x00000004 /* case insensitivity */
+#define PMf_EXTENDED 0x00000008 /* chuck embedded whitespace */
+#define PMf_KEEPCOPY 0x00000010 /* copy the string when matching */
+#define PMf_LOCALE 0x00000020 /* use locale for character types */
/* mask of bits that need to be transfered to re->extflags */
-#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED)
+#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED|PMf_KEEPCOPY)
#ifdef USE_ITHREADS
-# define PmopSTASHPV(o) ((o)->op_pmstashpv)
-# define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
+# define PmopSTASHPV(o) \
+ (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstashpv : NULL)
+# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+# define PmopSTASHPV_set(o,pv) ({ \
+ assert((o)->op_pmflags & PMf_ONCE); \
+ ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv)); \
+ })
+# else
+# define PmopSTASHPV_set(o,pv) \
+ ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv))
+# endif
# define PmopSTASH(o) (PmopSTASHPV(o) \
- ? gv_stashpv(PmopSTASHPV(o),GV_ADD) : NULL)
+ ? gv_stashpv((o)->op_pmstashstartu.op_pmstashpv,GV_ADD) : NULL)
# define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME_get(hv) : NULL))
# 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 PmopSTASH(o) \
+ (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL)
+# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+# define PmopSTASH_set(o,hv) ({ \
+ assert((o)->op_pmflags & PMf_ONCE); \
+ ((o)->op_pmstashstartu.op_pmstash = (hv)); \
+ })
+# else
+# define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv))
+# endif
# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
- /* op_pmstash is not refcounted */
+ /* op_pmstashstartu.op_pmstash is not refcounted */
# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
+/* Note that if this becomes non-empty, then S_forget_pmop in op.c will need
+ changing */
# define PmopSTASH_free(o)
#endif
#define cSVOPo_sv cSVOPx_sv(o)
#define kSVOP_sv cSVOPx_sv(kid)
-#define Nullop Null(OP*)
+#define Nullop ((OP*)NULL)
/* Lowest byte-and-a-bit of PL_opargs */
#define OA_MARK 1
#endif
#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
-#define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL)
-#define OpREFCNT_dec(o) (--(o)->op_targ)
+#ifdef PERL_DEBUG_READONLY_OPS
+# define OpREFCNT_inc(o) Perl_op_refcnt_inc(aTHX_ o)
+# define OpREFCNT_dec(o) Perl_op_refcnt_dec(aTHX_ o)
+#else
+# define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL)
+# define OpREFCNT_dec(o) (--(o)->op_targ)
+#endif
/* flags used by Perl_load_module() */
#define PERL_LOADMOD_DENY 0x1
/* no longer used anywhere in core */
#ifndef PERL_CORE
-#define cv_ckproto(cv, gv, p) cv_ckproto_len(cv, gv, p, p ? strlen(p) : 0)
+#define cv_ckproto(cv, gv, p) \
+ cv_ckproto_len((cv), (gv), (p), (p) ? strlen(p) : 0)
#endif
#ifdef USE_REENTRANT_API
#if defined(PL_OP_SLAB_ALLOC)
#define NewOp(m,var,c,type) \
- (var = (type *) Perl_Slab_Alloc(aTHX_ m,c*sizeof(type)))
+ (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type)))
#define NewOpSz(m,var,size) \
- (var = (OP *) Perl_Slab_Alloc(aTHX_ m,size))
+ (var = (OP *) Perl_Slab_Alloc(aTHX_ size))
#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
#else
#define NewOp(m, var, c, type) \
struct madprop {
MADPROP* mad_next;
- void *mad_val;
+ const void *mad_val;
U32 mad_vlen;
/* short mad_count; */
char mad_key;
#endif
/*
- * Values that can be hold by mad_key :
+ * Values that can be held by mad_key :
* ^ unfilled head spot
* , literal ,
* ; literal ; (blank if implicit ; at end of block)
* E tr/E/R/, /E/
* f folded constant op
* F peg op for format
+ * g op was forced to be a word
* i if/unless modifier
* I if/elsif/unless statement
+ * k local declarator
* K retired kid op
* l last index of array ($#foo)
* L label
* m modifier on regex
- * M my assignment slurped into some other operator's target
* n sub or format name
* o current operator/declarator name
* o else/continue
* Q optimized qw//
* r expression producing R
* R tr/E/R/ s/E/R/
- * R assign slurped by split
* s sub signature
* S use import stub (no import)
* S retired sort block
* _ whitespace/comments preceding anything else
* ~ =~ operator
*/
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */