*
* See regexp.h for flags used externally to the regexp engine
*/
+#define RXp_INTFLAGS(rx) ((rx)->intflags)
+#define RX_INTFLAGS(prog) RXp_INTFLAGS(ReANY(prog))
+
#define PREGf_SKIP 0x00000001
#define PREGf_IMPLICIT 0x00000002 /* Converted .* to ^.* */
#define PREGf_NAUGHTY 0x00000004 /* how exponential is this pattern? */
#define PREGf_VERBARG_SEEN 0x00000008
#define PREGf_CUTGROUP_SEEN 0x00000010
#define PREGf_USE_RE_EVAL 0x00000020 /* compiled with "use re 'eval'" */
+/* these used to be extflags, but are now intflags */
+#define PREGf_NOSCAN 0x00000040
+#define PREGf_CANY_SEEN 0x00000080
+#define PREGf_GPOS_SEEN 0x00000100
+#define PREGf_GPOS_FLOAT 0x00000200
+
+#define PREGf_ANCH_BOL 0x00000400
+#define PREGf_ANCH_MBOL 0x00000800
+#define PREGf_ANCH_SBOL 0x00001000
+#define PREGf_ANCH_GPOS 0x00002000
+#define PREGf_ANCH (PREGf_ANCH_SBOL | PREGf_ANCH_GPOS | \
+ PREGf_ANCH_MBOL | PREGf_ANCH_BOL )
/* this is where the old regcomp.h started */
};
-#define ANYOF_BITMAP_SIZE 32 /* 256 b/(8 b/B) */
+#define ANYOF_BITMAP_SIZE (256 / 8) /* 8 bits/Byte */
+
+/* Note that these form structs which are supersets of the next smaller one, by
+ * appending fields. Alignment problems can occur if one of those optional
+ * fields requires stricter alignment than the base struct. And formal
+ * parameters that can really be two or more of the structs should be
+ * declared as the smallest one it could be. See commit message for
+ * 7dcac5f6a5195002b55c935ee1d67f67e1df280b. Regnode allocation is done
+ * without regard to alignment, and changing it to would also require changing
+ * the code that inserts and deletes regnodes. The basic single-argument
+ * regnode has a U32, which is what reganode() allocates as a unit. Therefore
+ * no field can require stricter alignment than U32. */
/* also used by trie */
struct regnode_charclass {
U8 flags;
U8 type;
U16 next_off;
- U32 arg1; /* used as ptr in S_regclass */
+ U32 arg1;
char bitmap[ANYOF_BITMAP_SIZE]; /* only compile-time */
};
U8 flags; /* ANYOF_POSIXL bit must go here */
U8 type;
U16 next_off;
- U32 arg1; /* used as ptr in S_regclass */
+ U32 arg1;
char bitmap[ANYOF_BITMAP_SIZE]; /* both compile-time */
U32 classflags; /* and run-time */
};
-/* Synthetic start class; is a regnode_charclass_class plus an SV*. Note that
- * the 'next_off' field is unused, as the SSC stands alone, so there is never a
- * next node. */
+/* A synthetic start class (SSC); is a regnode_charclass_posixl_fold, plus an
+ * extra SV*, used only during its construction and which is not used by
+ * regexec.c. Note that the 'next_off' field is unused, as the SSC stands
+ * alone, so there is never a next node. Also, there is no alignment issue,
+ * becase these are declared or allocated as a complete unit so the compiler
+ * takes care of alignment. This is unlike the other regnodes which are
+ * allocated in terms of multiples of a single-argument regnode. SSC nodes can
+ * have a pointer field because there is no alignment issue, and because it is
+ * set to NULL after construction, before any cloning of the pattern */
struct regnode_ssc {
U8 flags; /* ANYOF_POSIXL bit must go here */
U8 type;
U16 next_off;
- U32 arg1; /* used as ptr in S_regclass */
+ U32 arg1;
char bitmap[ANYOF_BITMAP_SIZE]; /* both compile-time */
U32 classflags; /* and run-time */
- SV* invlist; /* list of code points matched */
+
+ /* Auxiliary, only used during construction; NULL afterwards: list of code
+ * points matched */
+ SV* invlist;
};
/* We take advantage of 'next_off' not otherwise being used in the SSC by
* reach this high). */
#define ANYOF_NONBITMAP_EMPTY ((U32) -1)
-/* The information used to be stored as as combination of the ANYOF_UTF8 and
- * ANYOF_NONBITMAP_NON_UTF8 bits in the flags field, but was moved out of there
- * to free up a bit for other uses. This tries to hide the change from
- * existing code as much as possible. Now, the data structure that goes in ARG
- * is not allocated unless it is needed, and that is what is used to determine
- * if there is something outside the bitmap. The code now assumes that if
- * that structure exists, that any UTF-8 encoded string should be tried against
- * it, but a non-UTF8-encoded string will be tried only if the
- * ANYOF_NONBITMAP_NON_UTF8 bit is also set. */
-#define ANYOF_NONBITMAP(node) (ARG(node) != ANYOF_NONBITMAP_EMPTY)
-
/* Flags for node->flags of ANYOF. These are in short supply, with none
- * currently available. If more are needed, the ANYOF_LOCALE and
- * ANYOF_POSIXL bits could be shared, making a space penalty for all locale
- * nodes. Also, the ABOVE_LATIN1_ALL bit could be freed up by resorting to
- * creating a swash containing everything above 255. This introduces a
- * performance penalty. Better would be to split it off into a separate node,
- * which actually would improve performance a bit by allowing regexec.c to test
- * for a UTF-8 character being above 255 without having to call a function nor
- * calculate its code point value. Several flags are not used in synthetic
- * start class (SSC) nodes, so could be shared should new flags be needed for
- * SSCs. */
+ * currently available. The ABOVE_LATIN1_ALL bit could be freed up
+ * by resorting to creating a swash containing everything above 255. This
+ * introduces a performance penalty. An option that wouldn't slow things down
+ * would be to split one of the two LOC flags out into a separate
+ * node, like what was done with ANYOF_NON_UTF8_NON_ASCII_ALL in commit
+ * 34fdef848b1687b91892ba55e9e0c3430e0770f6 (but which was reverted because it
+ * wasn't the best option available at the time), and using a LOC flag is
+ * probably better than that commit anyway. But it could be reinstated if we
+ * need a bit. The LOC flags are only for /l nodes; the reverted commit was
+ * only for /d, so there are no combinatorial issues. The LOC flag to use is
+ * probably the POSIXL one.
+ * Several flags are not used in synthetic start class (SSC) nodes, so could be
+ * shared should new flags be needed for SSCs, like ANYOF_EMPTY_STRING now. */
/* regexec.c is expecting this to be in the low bit */
#define ANYOF_INVERT 0x01
* regex compilation. */
#define ANYOF_EMPTY_STRING ANYOF_INVERT
-#define ANYOF_LOCALE 0x02 /* /l modifier */
+/* Are there things that will match only if the target string is encoded in
+ * UTF-8? (This is not set if ANYOF_AOVE_LATIN1_ALL is set) */
+#define ANYOF_UTF8 0x02
/* The fold is calculated and stored in the bitmap where possible at compile
* time. However under locale, the actual folding varies depending on
/* Set if this is a regnode_charclass_posixl vs a regnode_charclass. This
* is used for runtime \d, \w, [:posix:], ..., which are used only in locale
* and the optimizer's synthetic start class. Non-locale \d, etc are resolved
- * at compile-time. Could be shared with ANYOF_LOCALE, forcing all locale
- * nodes to be large */
+ * at compile-time */
#define ANYOF_POSIXL 0x08
#define ANYOF_CLASS ANYOF_POSIXL
#define ANYOF_LARGE ANYOF_POSIXL
/* Match all Latin1 characters that aren't ASCII when the target string is not
* in utf8. */
-#define ANYOF_NON_UTF8_LATIN1_ALL 0x80
+#define ANYOF_NON_UTF8_NON_ASCII_ALL 0x80
#define ANYOF_FLAGS_ALL (0xff)
-#define ANYOF_LOCALE_FLAGS (ANYOF_LOCALE \
- |ANYOF_LOC_FOLD \
- |ANYOF_POSIXL)
+#define ANYOF_LOCALE_FLAGS (ANYOF_LOC_FOLD | ANYOF_POSIXL)
/* These are the flags that apply to both regular ANYOF nodes and synthetic
* start class nodes during construction of the SSC. During finalization of
* the SSC, other of the flags could be added to it */
-#define ANYOF_COMMON_FLAGS (ANYOF_LOCALE_FLAGS | ANYOF_WARN_SUPER)
+#define ANYOF_COMMON_FLAGS (ANYOF_WARN_SUPER|ANYOF_UTF8)
/* Character classes for node->classflags of ANYOF */
/* Should be synchronized with a table in regprop() */
&& (((regnode_charclass_posixl*)(p))->classflags))
#define ANYOF_CLASS_TEST_ANY_SET(p) ANYOF_POSIXL_TEST_ANY_SET(p)
-#define ANYOF_POSIXL_TEST_ALL_SET(p) \
- ((ANYOF_FLAGS(p) & ANYOF_POSIXL) \
- && ((regnode_charclass_posixl*) (p))->classflags == ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1)
+/* Since an SSC always has this field, we don't have to test for that; nor do
+ * we want to because the bit isn't set for SSC during its construction */
+#define ANYOF_POSIXL_SSC_TEST_ANY_SET(p) \
+ cBOOL(((regnode_ssc*)(p))->classflags)
+#define ANYOF_POSIXL_SSC_TEST_ALL_SET(p) /* Are all bits set? */ \
+ (((regnode_ssc*) (p))->classflags \
+ == ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1)
+
+#define ANYOF_POSIXL_TEST_ALL_SET(p) \
+ ((ANYOF_FLAGS(p) & ANYOF_POSIXL) \
+ && ((regnode_charclass_posixl*) (p))->classflags \
+ == ((1U << ((ANYOF_POSIXL_MAX) - 1))) - 1)
#define ANYOF_POSIXL_OR(source, dest) STMT_START { (dest)->classflags |= (source)->classflags ; } STMT_END
#define ANYOF_CLASS_OR(source, dest) ANYOF_POSIXL_OR((source), (dest))
#define EXTRA_SIZE(guy) ((sizeof(guy)-1)/sizeof(struct regnode))
-#define REG_SEEN_ZERO_LEN 0x00000001
-#define REG_SEEN_LOOKBEHIND 0x00000002
-#define REG_SEEN_GPOS 0x00000004
+#define REG_ZERO_LEN_SEEN 0x00000001
+#define REG_LOOKBEHIND_SEEN 0x00000002
+#define REG_GPOS_SEEN 0x00000004
/* spare */
-#define REG_SEEN_CANY 0x00000010
-#define REG_SEEN_SANY REG_SEEN_CANY /* src bckwrd cmpt */
-#define REG_SEEN_RECURSE 0x00000020
-#define REG_TOP_LEVEL_BRANCHES 0x00000040
-#define REG_SEEN_VERBARG 0x00000080
-#define REG_SEEN_CUTGROUP 0x00000100
-#define REG_SEEN_RUN_ON_COMMENT 0x00000200
-#define REG_SEEN_EXACTF_SHARP_S 0x00000400
-#define REG_SEEN_GOSTART 0x00000800
+#define REG_CANY_SEEN 0x00000010
+#define REG_RECURSE_SEEN 0x00000020
+#define REG_TOP_LEVEL_BRANCHES_SEEN 0x00000040
+#define REG_VERBARG_SEEN 0x00000080
+#define REG_CUTGROUP_SEEN 0x00000100
+#define REG_RUN_ON_COMMENT_SEEN 0x00000200
+#define REG_UNFOLDED_MULTI_SEEN 0x00000400
+#define REG_GOSTART_SEEN 0x00000800
+#define REG_UNBOUNDED_QUANTIFIER_SEEN 0x00001000
+
START_EXTERN_C
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