* op_type The type of the operation.
* op_opt Whether or not the op has been optimised by the
* peephole optimiser.
- *
- * 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 three spare bits!
+ * op_slabbed allocated via opslab
+ * op_static tell op_free() to skip PerlMemShared_free(), when
+ * !op_slabbed.
+ * op_savefree on savestack via SAVEFREEOP
+ * 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
* the operation is privatized by a check routine,
* which may or may not check number of children).
*/
+#include "op_reg_common.h"
#define OPCODE U16
#define BASEOP \
OP* op_next; \
OP* op_sibling; \
- OP* (CPERLscope(*op_ppaddr))(pTHX); \
+ OP* (*op_ppaddr)(pTHX); \
MADPROP_IN_BASEOP \
PADOFFSET op_targ; \
PERL_BITFIELD16 op_type:9; \
PERL_BITFIELD16 op_opt:1; \
- PERL_BITFIELD16 op_latefree:1; \
- PERL_BITFIELD16 op_latefreed:1; \
- PERL_BITFIELD16 op_attached:1; \
+ PERL_BITFIELD16 op_slabbed:1; \
+ PERL_BITFIELD16 op_savefree:1; \
+ PERL_BITFIELD16 op_static:1; \
PERL_BITFIELD16 op_spare:3; \
U8 op_flags; \
U8 op_private;
then all the other bit-fields before/after it should change their
types too to let VC pack them into the same 4 byte integer.*/
+/* for efficiency, requires OPf_WANT_VOID == G_VOID etc */
#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)
+ (((op)->op_flags & OPf_WANT) ? ((op)->op_flags & OPf_WANT) : dfl)
#define OP_GIMME_REVERSE(flags) ((flags) & G_WANT)
=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.
+respectively. See L<perlcall> for a usage example.
=for apidoc Amn|U32|GIMME
A backward-compatible version of C<GIMME_V> which can only return
/* 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 $@ */
- /* On OP_ENTERITER, loop var is per-thread */
- /* On pushre, rx is used as part of split, e.g. split " " */
+ /* On OP_SPLIT, special split " " */
/* On regcomp, "use re 'eval'" was in scope */
/* On OP_READLINE, was <$filehandle> */
/* On RV2[ACGHS]V, don't create GV--in
defined()*/
/* On OP_DBSTATE, indicates breakpoint
* (runtime property) */
- /* On OP_AELEMFAST, indiciates pad var */
/* On OP_REQUIRE, was seen as CORE::require */
- /* On OP_ENTERWHEN, there's no condition */
- /* On OP_BREAK, an implicit break */
+ /* On OP_(ENTER|LEAVE)WHEN, there's
+ no condition */
/* On OP_SMARTMATCH, an implicit smartmatch */
/* On OP_ANONHASH and OP_ANONLIST, create a
reference to the new anon hash or array */
- /* On OP_ENTER, store caller context */
/* On OP_HELEM and OP_HSLICE, localization will be followed
by assignment, so do not wipe the target if it is special
(e.g. a glob or a magic SV) */
+ /* On OP_MATCH, OP_SUBST & OP_TRANS, the
+ operand of a logical or conditional
+ that was optimised away, so it should
+ not be bound via =~ */
+ /* On OP_CONST, from a constant CV */
+ /* On OP_GLOB, two meanings:
+ - Before ck_glob, called as CORE::glob
+ - After ck_glob, use Perl glob function
+ */
+ /* On OP_PADRANGE, push @_ */
/* old names; don't use in new code, but don't break them, either */
#define OPf_LIST OPf_WANT_LIST
: G_SCALAR) \
: dowantarray())
-/* NOTE: OP_NEXTSTATE and OP_DBSTATE (i.e. COPs) carry lower
- * bits of PL_hints in op_private */
+/* Lower bits of op_private often carry the number of arguments, as
+ * set by newBINOP, newUNOP and ck_fun */
+
+/* NOTE: OP_NEXTSTATE and OP_DBSTATE (i.e. COPs) carry NATIVE_HINTS
+ * in op_private */
/* Private for lvalues */
#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
+/* Private for OPs with TARGLEX */
+ /* (lower bits may carry MAXARG) */
+#define OPpTARGET_MY 16 /* Target is PADMY. */
+
/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
#define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */
-/* Private for OP_MATCH and OP_SUBST{,CONST} */
+/* Private for OP_MATCH and OP_SUBST{,CONT} */
#define OPpRUNTIME 64 /* Pattern coming in on the stack */
/* Private for OP_TRANS */
#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_ENTERSUB and OP_RV2CV only */
+#define OPpENTERSUB_HASTARG 4 /* Called from OP tree. */
+#define OPpENTERSUB_INARGS 1 /* Lval used as arg to a sub. */
+/* used by OPpDEREF (32|64) */
+/* used by HINT_STRICT_SUBS 2 */
+ /* Mask for OP_ENTERSUB flags, the absence of which must be propagated
+ in dynamic context */
+#define OPpENTERSUB_LVAL_MASK (OPpLVAL_INTRO|OPpENTERSUB_INARGS)
+
+ /* 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. */
+#define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
+
/* 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 */
+ /* OP_RV2[SAH]V, OP_GVSV, OP_ENTERITER only */
#define OPpOUR_INTRO 16 /* Variable was in an our() */
- /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM */
+ /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM, OP_[AH]SLICE OP_AV2ARYLEN,
+ OP_R?KEYS, OP_SUBSTR, OP_POS, OP_VEC */
#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
+ /* OP_RV2HV and OP_PADHV */
+#define OPpTRUEBOOL 32 /* %hash in (%hash || $foo) in
+ void context */
+#define OPpMAYBE_TRUEBOOL 64 /* %hash in (%hash || $foo) where
+ cx is not known till run time */
+
+ /* OP_SUBSTR only */
+#define OPpSUBSTR_REPL_FIRST 16 /* 1st arg is replacement string */
+
/* 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_PADRANGE only */
+ /* bit 7 is OPpLVAL_INTRO */
+#define OPpPADRANGE_COUNTMASK 127 /* bits 6..0 hold target range, */
+#define OPpPADRANGE_COUNTSHIFT 7 /* 7 bits in total */
+
/* OP_RV2GV only */
#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) */
-
- /* OP_RV2CV only */
-#define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
-
-/* Private for OPs with TARGLEX */
- /* (lower bits may carry MAXARG) */
-#define OPpTARGET_MY 16 /* Target is PADMY. */
+#define OPpALLOW_FAKE 16 /* OK to return fake glob */
/* Private for OP_ENTERITER and OP_ITER */
#define OPpITER_REVERSED 4 /* for (reverse ...) */
/* Private for OP_CONST */
#define OPpCONST_NOVER 2 /* no 6; */
#define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */
-#define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
+#define OPpCONST_STRICT 8 /* bareword 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. */
+#define OPpCONST_FOLDED 128 /* Result of constant folding */
/* Private for OP_FLIP/FLOP */
#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
/* Private for OP_FTXXX */
#define OPpFT_ACCESS 2 /* use filetest 'access' */
-#define OPpFT_STACKED 4 /* stacked filetest, as in "-f -x $f" */
+#define OPpFT_STACKED 4 /* stacked filetest, as "-f" in "-f -x $f" */
+#define OPpFT_STACKING 8 /* stacking filetest, as "-x" in "-f -x $f" */
+#define OPpFT_AFTER_t 16 /* previous op was -t */
/* Private for OP_(MAP|GREP)(WHILE|START) */
#define OPpGREP_LEX 2 /* iterate over lexical $_ */
/* Private for OP_ENTEREVAL */
#define OPpEVAL_HAS_HH 2 /* Does it have a copy of %^H */
+#define OPpEVAL_UNICODE 4
+#define OPpEVAL_BYTES 8
+#define OPpEVAL_COPHH 16 /* Construct %^H from cop hints */
+/* Private for OP_CALLER, OP_WANTARRAY and OP_RUNCV */
+#define OPpOFFBYONE 128 /* Treat caller(1) as caller(2) */
+
+/* Private for OP_COREARGS */
+/* These must not conflict with OPpDONT_INIT_GV or OPpALLOW_FAKE.
+ See pp.c:S_rv2gv. */
+#define OPpCOREARGS_DEREF1 1 /* Arg 1 is a handle constructor */
+#define OPpCOREARGS_DEREF2 2 /* Arg 2 is a handle constructor */
+#define OPpCOREARGS_SCALARMOD 64 /* \$ rather than \[$@%*] */
+#define OPpCOREARGS_PUSHMARK 128 /* Call pp_pushmark */
+
+/* Private for OP_(LAST|REDO|NEXT|GOTO|DUMP) */
+#define OPpPV_IS_UTF8 128 /* label is in UTF8 */
+
struct op {
BASEOP
};
union {
OP * op_pmreplstart; /* Only used in OP_SUBST */
#ifdef USE_ITHREADS
- char * op_pmstashpv; /* Only used in OP_MATCH, with PMf_ONCE set */
+ PADOFFSET op_pmstashoff; /* Only used in OP_MATCH, with PMf_ONCE set */
#else
HV * op_pmstash;
#endif
} op_pmstashstartu;
+ OP * op_code_list; /* list of (?{}) code blocks */
};
#ifdef USE_ITHREADS
#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
#endif
+/* Leave some space, so future bit allocations can go either in the shared or
+ * unshared area without affecting binary compatibility */
+#define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+6)
-#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 */
+/* 'use re "taint"' in scope: taint $1 etc. if target tainted */
+#define PMf_RETAINT (1<<(PMf_BASE_SHIFT+0))
-#define PMf_UNUSED 0x00000100 /* free for use */
-#define PMf_MAYBE_CONST 0x00000200 /* replacement contains variables */
+/* 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_ONCE (1<<(PMf_BASE_SHIFT+1))
-#define PMf_USED 0x00000400 /* PMf_ONCE has matched successfully.
- Not used under threading. */
+/* PMf_ONCE has matched successfully. Not used under threading. */
+#define PMf_USED (1<<(PMf_BASE_SHIFT+3))
-#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 */
+/* subst replacement is constant */
+#define PMf_CONST (1<<(PMf_BASE_SHIFT+4))
-/* The following flags have exact equivalents in regcomp.h with the prefix RXf_
- * which are stored in the regexp->extflags member. If you change them here,
- * you have to change them there, and vice versa.
- */
-#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 */
+/* keep 1st runtime pattern forever */
+#define PMf_KEEP (1<<(PMf_BASE_SHIFT+5))
-/* mask of bits that need to be transfered to re->extflags */
-#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED|PMf_KEEPCOPY)
+#define PMf_GLOBAL (1<<(PMf_BASE_SHIFT+6)) /* pattern had a g modifier */
-#ifdef USE_ITHREADS
+/* don't reset pos() if //g fails */
+#define PMf_CONTINUE (1<<(PMf_BASE_SHIFT+7))
-# 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((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))
+/* evaluating replacement as expr */
+#define PMf_EVAL (1<<(PMf_BASE_SHIFT+8))
+
+/* Return substituted string instead of modifying it. */
+#define PMf_NONDESTRUCT (1<<(PMf_BASE_SHIFT+9))
+
+/* the pattern has a CV attached (currently only under qr/...(?{}).../) */
+#define PMf_HAS_CV (1<<(PMf_BASE_SHIFT+10))
+/* op_code_list is private; don't free it etc. It may well point to
+ * code within another sub, with different pad etc */
+#define PMf_CODELIST_PRIVATE (1<<(PMf_BASE_SHIFT+11))
+
+/* the PMOP is a QR (we should be able to detect that from the op type,
+ * but the regex compilation API passes just the pm flags, not the op
+ * itself */
+#define PMf_IS_QR (1<<(PMf_BASE_SHIFT+12))
+#define PMf_USE_RE_EVAL (1<<(PMf_BASE_SHIFT+13)) /* use re'eval' in scope */
+
+#if PMf_BASE_SHIFT+13 > 31
+# error Too many PMf_ bits used. See above and regnodes.h for any spare in middle
+#endif
+
+#ifdef USE_ITHREADS
+
+# define PmopSTASH(o) ((o)->op_pmflags & PMf_ONCE \
+ ? PL_stashpad[(o)->op_pmstashstartu.op_pmstashoff] \
+ : NULL)
+# define PmopSTASH_set(o,hv) \
+ (assert_((o)->op_pmflags & PMf_ONCE) \
+ (o)->op_pmstashstartu.op_pmstashoff = \
+ (hv) ? alloccopstash(hv) : 0)
#else
# define PmopSTASH(o) \
(((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL)
# else
# define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv))
# endif
-# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
- /* 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 PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
+ /* op_pmstashstartu.op_pmstash is not refcounted */
+#define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
struct svop {
BASEOP
# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \
&& GvIN_PAD(v))
-# define IS_PADCONST(v) (v && SvREADONLY(v))
+# define IS_PADCONST(v) \
+ (v && (SvREADONLY(v) || (SvIsCOW(v) && !SvLEN(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 \
# define Nullop ((OP*)NULL)
#endif
-/* Lowest byte-and-a-bit of PL_opargs */
+/* 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_TARGLEX 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 OCSHIFT 8
#define OA_CLASS_MASK (15 << OCSHIFT)
#define OA_FILESTATOP (12 << OCSHIFT)
#define OA_LOOPEXOP (13 << OCSHIFT)
-#define OASHIFT 13
+#define OASHIFT 12
/* Remaining nybbles of PL_opargs */
#define OA_SCALAR 1
#define ref(o, type) doref(o, type, TRUE)
#endif
+/*
+=head1 Optree Manipulation Functions
+
+=for apidoc Am|OP*|LINKLIST|OP *o
+Given the root of an optree, link the tree in execution order using the
+C<op_next> pointers and return the first op executed. If this has
+already been done, it will not be redone, and C<< o->op_next >> will be
+returned. If C<< o->op_next >> is not already set, I<o> should be at
+least an C<UNOP>.
+
+=cut
+*/
+
+#define LINKLIST(o) ((o)->op_next ? (o)->op_next : op_linklist((OP*)o))
+
/* 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)
+ cv_ckproto_len_flags((cv), (gv), (p), (p) ? strlen(p) : 0, 0)
#endif
#ifdef PERL_CORE
#include "reentr.h"
#endif
-#if defined(PL_OP_SLAB_ALLOC)
#define NewOp(m,var,c,type) \
(var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type)))
#define NewOpSz(m,var,size) \
(var = (OP *) Perl_Slab_Alloc(aTHX_ size))
#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
-#else
-#define NewOp(m, var, c, type) \
- (var = (MEM_WRAP_CHECK_(c,type) \
- (type*)PerlMemShared_calloc(c, sizeof(type))))
-#define NewOpSz(m, var, size) \
- (var = (OP*)PerlMemShared_calloc(1, size))
-#define FreeOp(p) PerlMemShared_free(p)
+
+/*
+ * The per-CV op slabs consist of a header (the opslab struct) and a bunch
+ * of space for allocating op slots, each of which consists of two pointers
+ * followed by an op. The first pointer points to the next op slot. The
+ * second points to the slab. At the end of the slab is a null pointer,
+ * so that slot->opslot_next - slot can be used to determine the size
+ * of the op.
+ *
+ * Each CV can have multiple slabs; opslab_next points to the next slab, to
+ * form a chain. All bookkeeping is done on the first slab, which is where
+ * all the op slots point.
+ *
+ * Freed ops are marked as freed and attached to the freed chain
+ * via op_next pointers.
+ *
+ * When there is more than one slab, the second slab in the slab chain is
+ * assumed to be the one with free space available. It is used when allo-
+ * cating an op if there are no freed ops available or big enough.
+ */
+
+#ifdef PERL_CORE
+struct opslot {
+ /* keep opslot_next first */
+ OPSLOT * opslot_next; /* next slot */
+ OPSLAB * opslot_slab; /* owner */
+ OP opslot_op; /* the op itself */
+};
+
+struct opslab {
+ OPSLOT * opslab_first; /* first op in this slab */
+ OPSLAB * opslab_next; /* next slab */
+ OP * opslab_freed; /* chain of freed ops */
+ size_t opslab_refcnt; /* number of ops */
+# ifdef PERL_DEBUG_READONLY_OPS
+ U16 opslab_size; /* size of slab in pointers */
+ bool opslab_readonly;
+# endif
+ OPSLOT opslab_slots; /* slots begin here */
+};
+
+# define OPSLOT_HEADER STRUCT_OFFSET(OPSLOT, opslot_op)
+# define OPSLOT_HEADER_P (OPSLOT_HEADER/sizeof(I32 *))
+# define OpSLOT(o) (assert_(o->op_slabbed) \
+ (OPSLOT *)(((char *)o)-OPSLOT_HEADER))
+# define OpSLAB(o) OpSLOT(o)->opslot_slab
+# define OpslabREFCNT_dec(slab) \
+ (((slab)->opslab_refcnt == 1) \
+ ? opslab_free_nopad(slab) \
+ : (void)--(slab)->opslab_refcnt)
+ /* Variant that does not null out the pads */
+# define OpslabREFCNT_dec_padok(slab) \
+ (((slab)->opslab_refcnt == 1) \
+ ? opslab_free(slab) \
+ : (void)--(slab)->opslab_refcnt)
#endif
+struct block_hooks {
+ U32 bhk_flags;
+ void (*bhk_start) (pTHX_ int full);
+ void (*bhk_pre_end) (pTHX_ OP **seq);
+ void (*bhk_post_end) (pTHX_ OP **seq);
+ void (*bhk_eval) (pTHX_ OP *const saveop);
+};
+
+/*
+=head1 Compile-time scope hooks
+
+=for apidoc mx|U32|BhkFLAGS|BHK *hk
+Return the BHK's flags.
+
+=for apidoc mx|void *|BhkENTRY|BHK *hk|which
+Return an entry from the BHK structure. I<which> is a preprocessor token
+indicating which entry to return. If the appropriate flag is not set
+this will return NULL. The type of the return value depends on which
+entry you ask for.
+
+=for apidoc Amx|void|BhkENTRY_set|BHK *hk|which|void *ptr
+Set an entry in the BHK structure, and set the flags to indicate it is
+valid. I<which> is a preprocessing token indicating which entry to set.
+The type of I<ptr> depends on the entry.
+
+=for apidoc Amx|void|BhkDISABLE|BHK *hk|which
+Temporarily disable an entry in this BHK structure, by clearing the
+appropriate flag. I<which> is a preprocessor token indicating which
+entry to disable.
+
+=for apidoc Amx|void|BhkENABLE|BHK *hk|which
+Re-enable an entry in this BHK structure, by setting the appropriate
+flag. I<which> is a preprocessor token indicating which entry to enable.
+This will assert (under -DDEBUGGING) if the entry doesn't contain a valid
+pointer.
+
+=for apidoc mx|void|CALL_BLOCK_HOOKS|which|arg
+Call all the registered block hooks for type I<which>. I<which> is a
+preprocessing token; the type of I<arg> depends on I<which>.
+
+=cut
+*/
+
+#define BhkFLAGS(hk) ((hk)->bhk_flags)
+
+#define BHKf_bhk_start 0x01
+#define BHKf_bhk_pre_end 0x02
+#define BHKf_bhk_post_end 0x04
+#define BHKf_bhk_eval 0x08
+
+#define BhkENTRY(hk, which) \
+ ((BhkFLAGS(hk) & BHKf_ ## which) ? ((hk)->which) : NULL)
+
+#define BhkENABLE(hk, which) \
+ STMT_START { \
+ BhkFLAGS(hk) |= BHKf_ ## which; \
+ assert(BhkENTRY(hk, which)); \
+ } STMT_END
+
+#define BhkDISABLE(hk, which) \
+ STMT_START { \
+ BhkFLAGS(hk) &= ~(BHKf_ ## which); \
+ } STMT_END
+
+#define BhkENTRY_set(hk, which, ptr) \
+ STMT_START { \
+ (hk)->which = ptr; \
+ BhkENABLE(hk, which); \
+ } STMT_END
+
+#define CALL_BLOCK_HOOKS(which, arg) \
+ STMT_START { \
+ if (PL_blockhooks) { \
+ I32 i; \
+ for (i = av_len(PL_blockhooks); i >= 0; i--) { \
+ SV *sv = AvARRAY(PL_blockhooks)[i]; \
+ BHK *hk; \
+ \
+ assert(SvIOK(sv)); \
+ if (SvUOK(sv)) \
+ hk = INT2PTR(BHK *, SvUVX(sv)); \
+ else \
+ hk = INT2PTR(BHK *, SvIVX(sv)); \
+ \
+ if (BhkENTRY(hk, which)) \
+ BhkENTRY(hk, which)(aTHX_ arg); \
+ } \
+ } \
+ } STMT_END
+
+/* flags for rv2cv_op_cv */
+
+#define RV2CVOPCV_MARK_EARLY 0x00000001
+#define RV2CVOPCV_RETURN_NAME_GV 0x00000002
+
+#define op_lvalue(op,t) Perl_op_lvalue_flags(aTHX_ op,t,0)
+
+/* flags for op_lvalue_flags */
+
+#define OP_LVALUE_NO_CROAK 1
+
+/*
+=head1 Custom Operators
+
+=for apidoc Am|U32|XopFLAGS|XOP *xop
+Return the XOP's flags.
+
+=for apidoc Am||XopENTRY|XOP *xop|which
+Return a member of the XOP structure. I<which> is a cpp token indicating
+which entry to return. If the member is not set this will return a
+default value. The return type depends on I<which>.
+
+=for apidoc Am|void|XopENTRY_set|XOP *xop|which|value
+Set a member of the XOP structure. I<which> is a cpp token indicating
+which entry to set. See L<perlguts/"Custom Operators"> for details about
+the available members and how they are used.
+
+=for apidoc Am|void|XopDISABLE|XOP *xop|which
+Temporarily disable a member of the XOP, by clearing the appropriate flag.
+
+=for apidoc Am|void|XopENABLE|XOP *xop|which
+Reenable a member of the XOP which has been disabled.
+
+=cut
+*/
+
+struct custom_op {
+ U32 xop_flags;
+ const char *xop_name;
+ const char *xop_desc;
+ U32 xop_class;
+ void (*xop_peep)(pTHX_ OP *o, OP *oldop);
+};
+
+#define XopFLAGS(xop) ((xop)->xop_flags)
+
+#define XOPf_xop_name 0x01
+#define XOPf_xop_desc 0x02
+#define XOPf_xop_class 0x04
+#define XOPf_xop_peep 0x08
+
+#define XOPd_xop_name PL_op_name[OP_CUSTOM]
+#define XOPd_xop_desc PL_op_desc[OP_CUSTOM]
+#define XOPd_xop_class OA_BASEOP
+#define XOPd_xop_peep ((Perl_cpeep_t)0)
+
+#define XopENTRY_set(xop, which, to) \
+ STMT_START { \
+ (xop)->which = (to); \
+ (xop)->xop_flags |= XOPf_ ## which; \
+ } STMT_END
+
+#define XopENTRY(xop, which) \
+ ((XopFLAGS(xop) & XOPf_ ## which) ? (xop)->which : XOPd_ ## which)
+
+#define XopDISABLE(xop, which) ((xop)->xop_flags &= ~XOPf_ ## which)
+#define XopENABLE(xop, which) \
+ STMT_START { \
+ (xop)->xop_flags |= XOPf_ ## which; \
+ assert(XopENTRY(xop, which)); \
+ } STMT_END
+
+/*
+=head1 Optree Manipulation Functions
+
+=for apidoc Am|const char *|OP_NAME|OP *o
+Return the name of the provided OP. For core ops this looks up the name
+from the op_type; for custom ops from the op_ppaddr.
+
+=for apidoc Am|const char *|OP_DESC|OP *o
+Return a short description of the provided OP.
+
+=for apidoc Am|U32|OP_CLASS|OP *o
+Return the class of the provided OP: that is, which of the *OP
+structures it uses. For core ops this currently gets the information out
+of PL_opargs, which does not always accurately reflect the type used.
+For custom ops the type is returned from the registration, and it is up
+to the registree to ensure it is accurate. The value returned will be
+one of the OA_* constants from op.h.
+
+=cut
+*/
+
+#define OP_NAME(o) ((o)->op_type == OP_CUSTOM \
+ ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_name) \
+ : PL_op_name[(o)->op_type])
+#define OP_DESC(o) ((o)->op_type == OP_CUSTOM \
+ ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_desc) \
+ : PL_op_desc[(o)->op_type])
+#define OP_CLASS(o) ((o)->op_type == OP_CUSTOM \
+ ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_class) \
+ : (PL_opargs[(o)->op_type] & OA_CLASS_MASK))
+
+#define newSUB(f, o, p, b) Perl_newATTRSUB(aTHX_ (f), (o), (p), NULL, (b))
+
#ifdef PERL_MAD
# define MAD_NULL 1
# define MAD_PV 2
*/
/*
+=head1 Hook manipulation
+*/
+
+#ifdef USE_ITHREADS
+# define OP_CHECK_MUTEX_INIT MUTEX_INIT(&PL_check_mutex)
+# define OP_CHECK_MUTEX_LOCK MUTEX_LOCK(&PL_check_mutex)
+# define OP_CHECK_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_check_mutex)
+# define OP_CHECK_MUTEX_TERM MUTEX_DESTROY(&PL_check_mutex)
+#else
+# define OP_CHECK_MUTEX_INIT NOOP
+# define OP_CHECK_MUTEX_LOCK NOOP
+# define OP_CHECK_MUTEX_UNLOCK NOOP
+# define OP_CHECK_MUTEX_TERM NOOP
+#endif
+
+/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
- * indent-tabs-mode: t
+ * indent-tabs-mode: nil
* End:
*
- * ex: set ts=8 sts=4 sw=4 noet:
+ * ex: set ts=8 sts=4 sw=4 et:
*/
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