* op_static tell op_free() to skip PerlMemShared_free(), when
* !op_slabbed.
* op_savefree on savestack via SAVEFREEOP
- * op_spare Three spare bits
+ * op_folded Result/remainder of a constant fold operation.
+ * op_lastsib this op is is the last sibling
+ * op_spare One spare bit
* 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
#define OPCODE U16
-#ifdef PERL_MAD
-# define MADPROP_IN_BASEOP MADPROP* op_madprop;
-#else
-# define MADPROP_IN_BASEOP
-#endif
-
typedef PERL_BITFIELD16 Optype;
#ifdef BASEOP_DEFINITION
OP* op_next; \
OP* op_sibling; \
OP* (*op_ppaddr)(pTHX); \
- MADPROP_IN_BASEOP \
PADOFFSET op_targ; \
PERL_BITFIELD16 op_type:9; \
PERL_BITFIELD16 op_opt:1; \
PERL_BITFIELD16 op_slabbed:1; \
PERL_BITFIELD16 op_savefree:1; \
PERL_BITFIELD16 op_static:1; \
- PERL_BITFIELD16 op_spare:3; \
+ PERL_BITFIELD16 op_folded:1; \
+ PERL_BITFIELD16 op_lastsib:1; \
+ PERL_BITFIELD16 op_spare:1; \
U8 op_flags; \
U8 op_private;
#endif
=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. See L<perlcall> for a usage example.
+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_(ENTER|LEAVE)EVAL, don't clear $@ */
/* On pushre, rx is used as part of split, e.g. split " " */
/* On regcomp, "use re 'eval'" was in scope */
- /* On OP_READLINE, was <$filehandle> */
/* On RV2[ACGHS]V, don't create GV--in
defined()*/
/* On OP_DBSTATE, indicates breakpoint
- After ck_glob, use Perl glob function
*/
/* On OP_PADRANGE, push @_ */
+ /* On OP_DUMP, has no label */
/* old names; don't use in new code, but don't break them, either */
#define OPf_LIST OPf_WANT_LIST
/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
+/* Private for OP_LEAVE and OP_LEAVELOOP */
+#define OPpLVALUE 128 /* Do not copy return value */
+
/* Private for OP_AASSIGN */
#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
#define OPpDEREF_HV 64 /* Want ref to HV. */
#define OPpDEREF_SV (32|64) /* Want ref to SV. */
+/* OP_ENTERSUB and OP_RV2CV flags
+
+Flags are set on entersub and rv2cv in three phases:
+ parser - the parser passes the flag to the op constructor
+ check - the check routine called by the op constructor sets the flag
+ context - application of scalar/ref/lvalue context applies the flag
+
+In the third stage, an entersub op might turn into an rv2cv op (undef &foo,
+\&foo, lock &foo, exists &foo, defined &foo). The two places where that
+happens (op_lvalue_flags and doref in op.c) need to make sure the flags do
+not conflict. Flags applied in the context phase are only set when there
+is no conversion of op type.
+
+ bit entersub flag phase rv2cv flag phase
+ --- ------------- ----- ---------- -----
+ 1 OPpENTERSUB_INARGS context
+ 2 HINT_STRICT_REFS check HINT_STRICT_REFS check
+ 4 OPpENTERSUB_HASTARG check
+ 8 OPpENTERSUB_AMPER parser
+ 16 OPpENTERSUB_DB check
+ 32 OPpDEREF_AV context
+ 64 OPpDEREF_HV context OPpMAY_RETURN_CONSTANT context
+ 128 OPpLVAL_INTRO context OPpENTERSUB_NOPAREN parser
+
+*/
+
/* OP_ENTERSUB only */
#define OPpENTERSUB_DB 16 /* Debug subroutine. */
#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 */
+/* used by HINT_STRICT_REFS 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 OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
+#define OPpMAY_RETURN_CONSTANT 64 /* 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[AH]V OP_[AH]SLICE */
+#define OPpSLICEWARNING 4 /* warn about @hash{$scalar} */
/* 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_[AH]SLICE OP_AV2ARYLEN,
#define OPpCONST_STRICT 8 /* bareword subject to strict 'subs' */
#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
-#define OPpCONST_FOLDED 128 /* Result of constant folding */
/* Private for OP_FLIP/FLOP */
#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
#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 for COPs */
+#define OPpHUSH_VMSISH 32 /* hush DCL exit msg vmsish mode*/
+/* Note: Used for NATIVE_HINTS (shifted from the values in PL_hints),
+ currently defined by vms/vmsish.h:
+ 64
+ 128
+ */
/* Private for OP_FTXXX */
#define OPpFT_ACCESS 2 /* use filetest 'access' */
#define OPpEVAL_UNICODE 4
#define OPpEVAL_BYTES 8
#define OPpEVAL_COPHH 16 /* Construct %^H from cop hints */
+#define OPpEVAL_RE_REPARSING 32 /* eval_sv(..., G_RE_REPARSING) */
/* Private for OP_CALLER, OP_WANTARRAY and OP_RUNCV */
#define OPpOFFBYONE 128 /* Treat caller(1) as caller(2) */
/* Private for OP_(LAST|REDO|NEXT|GOTO|DUMP) */
#define OPpPV_IS_UTF8 128 /* label is in UTF8 */
+/* Private for OP_SPLIT */
+#define OPpSPLIT_IMPLIM 128 /* implicit limit */
+
struct op {
BASEOP
};
OP * op_first;
OP * op_last;
#ifdef USE_ITHREADS
- IV op_pmoffset;
+ PADOFFSET op_pmoffset;
#else
REGEXP * op_pmregexp; /* compiled expression */
#endif
/* flags used by Perl_load_module() */
#define PERL_LOADMOD_DENY 0x1 /* no Module */
#define PERL_LOADMOD_NOIMPORT 0x2 /* use Module () */
-#define PERL_LOADMOD_IMPORT_OPS 0x4 /* use Module (...) */
+#define PERL_LOADMOD_IMPORT_OPS 0x4 /* import arguments
+ are passed as a sin-
+ gle op tree, not a
+ list of SVs */
-#if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C)
+#if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C) || defined(PERL_IN_TOKE_C)
#define ref(o, type) doref(o, type, TRUE)
#endif
=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
+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
+returned. If C<< o->op_next >> is not already set, I<o> should be at
least an C<UNOP>.
=cut
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
+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.
+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
+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.
+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
+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 CALL_BLOCK_HOOKS(which, arg) \
STMT_START { \
if (PL_blockhooks) { \
- I32 i; \
- for (i = av_len(PL_blockhooks); i >= 0; i--) { \
+ SSize_t i; \
+ for (i = av_tindex(PL_blockhooks); i >= 0; i--) { \
SV *sv = AvARRAY(PL_blockhooks)[i]; \
BHK *hk; \
\
#define RV2CVOPCV_MARK_EARLY 0x00000001
#define RV2CVOPCV_RETURN_NAME_GV 0x00000002
+#define RV2CVOPCV_RETURN_STUB 0x00000004
+#define RV2CVOPCV_FLAG_MASK 0x00000007 /* all of the above */
#define op_lvalue(op,t) Perl_op_lvalue_flags(aTHX_ op,t,0)
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>.
+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>. This macro evaluates its arguments more than
+once. If you are using C<Perl_custom_op_xop> to retreive a
+C<XOP *> from a C<OP *>, use the more efficient L</XopENTRYCUSTOM> instead.
+
+=for apidoc Am||XopENTRYCUSTOM|const OP *o|which
+Exactly like C<XopENTRY(XopENTRY(Perl_custom_op_xop(aTHX_ o), which)> but more
+efficient. The I<which> parameter is identical to L</XopENTRY>.
=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.
+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. This macro evaluates its argument
+more than once.
=for apidoc Am|void|XopDISABLE|XOP *xop|which
Temporarily disable a member of the XOP, by clearing the appropriate flag.
void (*xop_peep)(pTHX_ OP *o, OP *oldop);
};
+/* return value of Perl_custom_op_get_field, similar to void * then casting but
+ the U32 doesn't need truncation on 64 bit platforms in the caller, also
+ for easier macro writing */
+typedef union {
+ const char *xop_name;
+ const char *xop_desc;
+ U32 xop_class;
+ void (*xop_peep)(pTHX_ OP *o, OP *oldop);
+ XOP *xop_ptr;
+} XOPRETANY;
+
#define XopFLAGS(xop) ((xop)->xop_flags)
#define XOPf_xop_name 0x01
#define XOPf_xop_class 0x04
#define XOPf_xop_peep 0x08
+/* used by Perl_custom_op_get_field for option checking */
+typedef enum {
+ XOPe_xop_ptr = 0, /* just get the XOP *, don't look inside it */
+ XOPe_xop_name = XOPf_xop_name,
+ XOPe_xop_desc = XOPf_xop_desc,
+ XOPe_xop_class = XOPf_xop_class,
+ XOPe_xop_peep = XOPf_xop_peep
+} xop_flags_enum;
+
#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 XopENTRY(xop, which) \
((XopFLAGS(xop) & XOPf_ ## which) ? (xop)->which : XOPd_ ## which)
+#define XopENTRYCUSTOM(o, which) \
+ (Perl_custom_op_get_field(aTHX_ o, XOPe_ ## which).which)
+
#define XopDISABLE(xop, which) ((xop)->xop_flags &= ~XOPf_ ## which)
#define XopENABLE(xop, which) \
STMT_START { \
assert(XopENTRY(xop, which)); \
} STMT_END
+#define Perl_custom_op_xop(x) \
+ (Perl_custom_op_get_field(x, XOPe_xop_ptr).xop_ptr)
+
/*
=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
+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
=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
+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
+to the registree to ensure it is accurate. The value returned will be
one of the OA_* constants from op.h.
+=for apidoc Am|bool|OP_TYPE_IS|OP *o, Optype type
+Returns true if the given OP is not a NULL pointer
+and if it is of the given type.
+
+The negation of this macro, C<OP_TYPE_ISNT> is also available
+as well as C<OP_TYPE_IS_NN> and C<OP_TYPE_ISNT_NN> which elide
+the NULL pointer check.
+
+=for apidoc Am|bool|OP_TYPE_IS_OR_WAS|OP *o, Optype type
+Returns true if the given OP is not a NULL pointer and
+if it is of the given type or used to be before being
+replaced by an OP of type OP_NULL.
+
+The negation of this macro, C<OP_TYPE_ISNT_AND_WASNT>
+is also available as well as C<OP_TYPE_IS_OR_WAS_NN>
+and C<OP_TYPE_ISNT_AND_WASNT_NN> which elide
+the NULL pointer check.
+
+=for apidoc Am|bool|OP_HAS_SIBLING|OP *o
+Returns true if o has a sibling
+
+=for apidoc Am|bool|OP_SIBLING|OP *o
+Returns the sibling of o, or NULL if there is no sibling
+
+=for apidoc Am|bool|OP_SIBLING_set|OP *o|OP *sib
+Sets the sibling of o to sib
+
=cut
*/
#define OP_NAME(o) ((o)->op_type == OP_CUSTOM \
- ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_name) \
+ ? XopENTRYCUSTOM(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) \
+ ? XopENTRYCUSTOM(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) \
+ ? XopENTRYCUSTOM(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
-# define MAD_OP 3
-# define MAD_SV 4
-
-struct madprop {
- MADPROP* mad_next;
- void *mad_val;
- U32 mad_vlen;
-/* short mad_count; */
- char mad_key;
- char mad_type;
-};
-
-struct token {
- I32 tk_type;
- YYSTYPE tk_lval;
- MADPROP* tk_mad;
-};
+#define OP_TYPE_IS(o, type) ((o) && (o)->op_type == (type))
+#define OP_TYPE_IS_NN(o, type) ((o)->op_type == (type))
+#define OP_TYPE_ISNT(o, type) ((o) && (o)->op_type != (type))
+#define OP_TYPE_ISNT_NN(o, type) ((o)->op_type != (type))
+
+#define OP_TYPE_IS_OR_WAS_NN(o, type) \
+ ( ((o)->op_type == OP_NULL \
+ ? (o)->op_targ \
+ : (o)->op_type) \
+ == (type) )
+
+#define OP_TYPE_IS_OR_WAS(o, type) \
+ ( (o) && OP_TYPE_IS_OR_WAS_NN(o, type) )
+
+#define OP_TYPE_ISNT_AND_WASNT_NN(o, type) \
+ ( ((o)->op_type == OP_NULL \
+ ? (o)->op_targ \
+ : (o)->op_type) \
+ != (type) )
+
+#define OP_TYPE_ISNT_AND_WASNT(o, type) \
+ ( (o) && OP_TYPE_ISNT_AND_WASNT_NN(o, type) )
+
+#ifdef PERL_OP_PARENT
+# define OP_HAS_SIBLING(o) (!cBOOL((o)->op_lastsib))
+# define OP_SIBLING(o) (0 + (o)->op_lastsib ? NULL : (o)->op_sibling)
+# define OP_SIBLING_set(o, sib) ((o)->op_sibling = (sib))
+#else
+# define OP_HAS_SIBLING(o) (cBOOL((o)->op_sibling))
+# define OP_SIBLING(o) (0 + (o)->op_sibling)
+# define OP_SIBLING_set(o, sib) ((o)->op_sibling = (sib))
#endif
-/*
- * Values that can be held by mad_key :
- * ^ unfilled head spot
- * , literal ,
- * ; literal ; (blank if implicit ; at end of block)
- * : literal : from ?: or attr list
- * + unary +
- * ? literal ? from ?:
- * ( literal (
- * ) literal )
- * [ literal [
- * ] literal ]
- * { literal {
- * } literal }
- * @ literal @ sigil
- * $ literal $ sigil
- * * literal * sigil
- * ! use is source filtered
- * & & or sub
- * # whitespace/comment following ; or }
- * # $# sigil
- * 1 1st ; from for(;;)
- * 1 retired protasis
- * 2 2nd ; from for(;;)
- * 2 retired apodosis
- * 3 C-style for list
- * a sub or var attributes
- * a non-method arrow operator
- * A method arrow operator
- * A use import args
- * b format block
- * B retired stub block
- * C constant conditional op
- * d declarator
- * D do block
- * e unreached "else" (see C)
- * e expression producing E
- * E tr/E/R/, /E/
- * f folded constant op
- * F peg op for format
- * g op was forced to be a word
- * i if/unless modifier
- * I if/elsif/unless statement
- * k local declarator
- * K retired kid op
- * l last index of array ($#foo)
- * L label
- * m modifier on regex
- * n sub or format name
- * o current operator/declarator name
- * o else/continue
- * O generic optimized op
- * p peg to hold extra whitespace at statement level
- * P peg op for package declaration
- * q opening quote
- * = quoted material
- * Q closing quote
- * Q optimized qw//
- * r expression producing R
- * R tr/E/R/ s/E/R/
- * s sub signature
- * S use import stub (no import)
- * S retired sort block
- * t unreached "then" (see C)
- * U use import op
- * v private sv of for loop
- * V use version
- * w while/until modifier
- * W while/for statement
- * x optimized qw
- * X random thing
- * _ whitespace/comments preceding anything else
- * ~ =~ operator
- */
+#define newATTRSUB(f, o, p, a, b) Perl_newATTRSUB_x(aTHX_ f, o, p, a, b, FALSE)
+#define newSUB(f, o, p, b) newATTRSUB((f), (o), (p), NULL, (b))
/*
=head1 Hook manipulation
https://perl5.git.perl.org / perl5.git / blobdiff