* !op_slabbed.
* op_savefree on savestack via SAVEFREEOP
* op_folded Result/remainder of a constant fold operation.
- * op_lastsib this op is is the last sibling
+ * op_moresib this op is is not 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,
typedef PERL_BITFIELD16 Optype;
+/* this field now either points to the next sibling or to the parent,
+ * depending on op_moresib. So rename it from op_sibling to op_sibparent.
+ */
+#ifdef PERL_OP_PARENT
+# define _OP_SIBPARENT_FIELDNAME op_sibparent
+#else
+# define _OP_SIBPARENT_FIELDNAME op_sibling
+#endif
+
#ifdef BASEOP_DEFINITION
#define BASEOP BASEOP_DEFINITION
#else
#define BASEOP \
OP* op_next; \
- OP* op_sibling; \
+ OP* _OP_SIBPARENT_FIELDNAME;\
OP* (*op_ppaddr)(pTHX); \
PADOFFSET op_targ; \
PERL_BITFIELD16 op_type:9; \
PERL_BITFIELD16 op_savefree:1; \
PERL_BITFIELD16 op_static:1; \
PERL_BITFIELD16 op_folded:1; \
- PERL_BITFIELD16 op_lastsib:1; \
+ PERL_BITFIELD16 op_moresib:1; \
PERL_BITFIELD16 op_spare:1; \
U8 op_flags; \
U8 op_private;
#endif
-/* If op_type:9 is changed to :10, also change PUSHEVAL in cop.h.
+/* If op_type:9 is changed to :10, also change cx_pusheval()
Also, if the type of op_type is ever changed (e.g. to PERL_BITFIELD32)
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.*/
/* 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 OP_LEAVE, don't restore curpm, e.g.
+ * /(...)/ while ...>; */
/* On truncate, we truncate filehandle */
/* On control verbs, we saw no label */
/* On flipflop, we saw ... instead of .. */
* allocate off the low end until you get to PMf_BASE_SHIFT+0. If that isn't
* enough, move PMf_BASE_SHIFT down (if possible) and add the new bit at the
* other end instead; this preserves binary compatibility. */
-#define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+3)
+#define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+2)
/* 'use re "taint"' in scope: taint $1 etc. if target tainted */
#define PMf_RETAINT (1U<<(PMf_BASE_SHIFT+5))
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
+returned. If C<< o->op_next >> is not already set, C<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
+Return an entry from the BHK structure. C<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
+this will return C<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.
+valid. C<which> is a preprocessing token indicating which entry to set.
+The type of
C<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. C<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. C<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>.
+Call all the registered block hooks for type C<which>. C<which> is a
+preprocessing token; the type of C<arg> depends on C<which>.
=cut
*/
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
+Return a member of the XOP structure. C<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
+on C<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>.
+efficient. The C<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
+Set a member of the XOP structure. C<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
=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.
+of C<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.
+one of the C<OA_>* constants from F<op.h>.
-=for apidoc Am|bool|OP_TYPE_IS|OP *o, Optype type
-Returns true if the given OP is not a NULL pointer
+=for apidoc Am|bool|OP_TYPE_IS|OP *o|Optype type
+Returns true if the given OP is not a C<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
+=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.
+the C<NULL> pointer check.
=for apidoc Am|bool|OpHAS_SIBLING|OP *o
-Returns true if o has a sibling
+Returns true if C<o> has a sibling
+
+=for apidoc Am|OP*|OpSIBLING|OP *o
+Returns the sibling of C<o>, or C<NULL> if there is no sibling
-=for apidoc Am|bool|OpSIBLING|OP *o
-Returns the sibling of o, or NULL if there is no sibling
+=for apidoc Am|void|OpMORESIB_set|OP *o|OP *sib
+Sets the sibling of C<o> to the non-zero value C<sib>. See also C<L</OpLASTSIB_set>>
+and C<L</OpMAYBESIB_set>>. For a higher-level interface, see
+C<L</op_sibling_splice>>.
-=for apidoc Am|bool|OpSIBLING_set|OP *o|OP *sib
-Sets the sibling of o to sib
+=for apidoc Am|void|OpLASTSIB_set|OP *o|OP *parent
+Marks C<o> as having no further siblings. On C<PERL_OP_PARENT> builds, marks
+o as having the specified parent. See also C<L</OpMORESIB_set>> and
+C<OpMAYBESIB_set>. For a higher-level interface, see
+C<L</op_sibling_splice>>.
+
+=for apidoc Am|void|OpMAYBESIB_set|OP *o|OP *sib|OP *parent
+Conditionally does C<OpMORESIB_set> or C<OpLASTSIB_set> depending on whether
+C<sib> is non-null. For a higher-level interface, see C<L</op_sibling_splice>>.
=cut
*/
#define OP_TYPE_ISNT_AND_WASNT(o, type) \
( (o) && OP_TYPE_ISNT_AND_WASNT_NN(o, type) )
+
#ifdef PERL_OP_PARENT
-# define OpHAS_SIBLING(o) (!cBOOL((o)->op_lastsib))
-# define OpSIBLING(o) (0 + (o)->op_lastsib ? NULL : (o)->op_sibling)
-# define OpSIBLING_set(o, sib) ((o)->op_sibling = (sib))
+# define OpHAS_SIBLING(o) (cBOOL((o)->op_moresib))
+# define OpSIBLING(o) (0 + (o)->op_moresib ? (o)->op_sibparent : NULL)
+# define OpMORESIB_set(o, sib) ((o)->op_moresib = 1, (o)->op_sibparent = (sib))
+# define OpLASTSIB_set(o, parent) \
+ ((o)->op_moresib = 0, (o)->op_sibparent = (parent))
+# define OpMAYBESIB_set(o, sib, parent) \
+ ((o)->op_sibparent = ((o)->op_moresib = cBOOL(sib)) ? (sib) : (parent))
#else
# define OpHAS_SIBLING(o) (cBOOL((o)->op_sibling))
# define OpSIBLING(o) (0 + (o)->op_sibling)
-# define OpSIBLING_set(o, sib) ((o)->op_sibling = (sib))
+# define OpMORESIB_set(o, sib) ((o)->op_moresib = 1, (o)->op_sibling = (sib))
+# define OpLASTSIB_set(o, parent) \
+ ((o)->op_moresib = 0, (o)->op_sibling = NULL)
+# define OpMAYBESIB_set(o, sib, parent) \
+ ((o)->op_moresib = cBOOL(sib), (o)->op_sibling = (sib))
#endif
+
#if !defined(PERL_CORE) && !defined(PERL_EXT)
+/* for backwards compatibility only */
# define OP_SIBLING(o) OpSIBLING(o)
#endif
#define MDEREF_MASK 0x7F
#define MDEREF_SHIFT 7
+#if defined(PERL_IN_DOOP_C) || defined(PERL_IN_PP_C)
+static const char * const deprecated_above_ff_msg
+ = "Use of strings with code points over 0xFF as arguments to "
+ "%s operator is deprecated";
+#endif
+
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
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