/* op.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006 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_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.
- * op_spare Five spare bits!
+ *
+ * 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_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
unsigned op_type:9; \
unsigned op_opt:1; \
unsigned op_static:1; \
- unsigned op_spare:5; \
+ unsigned op_latefree:1; \
+ unsigned op_latefreed:1; \
+ unsigned op_attached:1; \
+ unsigned op_spare:2; \
U8 op_flags; \
U8 op_private;
#endif
/* On OP_ENTERWHEN, there's no condition */
/* On OP_BREAK, an implicit break */
/* On OP_SMARTMATCH, an implicit smartmatch */
+ /* On OP_ANONHASH and OP_ANONLIST, create a
+ reference to the new anon hash or array */
/* old names; don't use in new code, but don't break them, either */
#define OPf_LIST OPf_WANT_LIST
#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 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)
+/* The following flags have exact equivalents in regcomp.h with the prefix RXf_
+ * which are stored in the regexp->extflags member.
+ */
+#define PMf_LOCALE 0x00800 /* use locale for character types */
+#define PMf_MULTILINE 0x01000 /* assume multiple lines */
+#define PMf_SINGLELINE 0x02000 /* assume single line */
+#define PMf_FOLD 0x04000 /* case insensitivity */
+#define PMf_EXTENDED 0x08000 /* chuck embedded whitespace */
+#define PMf_KEEPCOPY 0x10000 /* copy the string when matching */
+
+/* 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)
#ifdef USE_ITHREADS
#ifdef USE_ITHREADS
# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
-# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && GvIN_PAD(v))
+# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \
+ && GvIN_PAD(v))
# define IS_PADCONST(v) (v && SvREADONLY(v))
# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
#define OA_SCALARREF 7
#define OA_OPTIONAL 8
+/* Op_REFCNT is a reference count at the head of each op tree: needed
+ * since the tree is shared between threads, and between cloned closure
+ * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying
+ * this count.
+ * The same mutex is used to protect the refcounts of the reg_trie_data
+ * and reg_ac_data structures, which are shared between duplicated
+ * regexes.
+ */
+
#ifdef USE_ITHREADS
# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
# ifdef PERL_CORE
#define PERL_LOADMOD_NOIMPORT 0x2
#define PERL_LOADMOD_IMPORT_OPS 0x4
-/* used in perly.y */
+#if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C)
#define ref(o, type) doref(o, type, TRUE)
+#endif
/* 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
MADPROP* tk_mad;
};
#endif
+
+/*
+ * Values that can be hold 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 }
+ * # $# sigil
+ * 1 1st ; from for(;;)
+ * 1 retired protasis
+ * 2 2nd ; from for(;;)
+ * 2 retired apodosis
+ * 3 C-style for list
+ * a sub or var attributes
+ * a non-method arrow operator
+ * A method arrow operator
+ * A use import args
+ * b format block
+ * B retired stub block
+ * C constant conditional op
+ * d declarator
+ * D do block
+ * e unreached "else" (see C)
+ * e expression producing E
+ * E tr/E/R/, /E/
+ * f folded constant op
+ * F peg op for format
+ * i if/unless modifier
+ * I if/elsif/unless statement
+ * K retired kid op
+ * l last index of array ($#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
+ * 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/
+ * R assign slurped by split
+ * 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
+ */
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