* Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
* not the System V one.
*/
-
+#ifndef PLUGGABLE_RE_EXTENSION
+/* we don't want to include this stuff if we are inside Nicholas'
+ * pluggable regex engine code */
struct regnode {
U8 flags;
#define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS|ROPT_ANCH_SBOL)
#define ROPT_ANCH_SINGLE (ROPT_ANCH_SBOL|ROPT_ANCH_GPOS)
-#define ROPT_ANCH_BOL 0x00001
-#define ROPT_ANCH_MBOL 0x00002
-#define ROPT_ANCH_SBOL 0x00004
-#define ROPT_ANCH_GPOS 0x00008
-#define ROPT_SKIP 0x00010
-#define ROPT_IMPLICIT 0x00020 /* Converted .* to ^.* */
-#define ROPT_NOSCAN 0x00040 /* Check-string always at start. */
-#define ROPT_GPOS_SEEN 0x00080
-#define ROPT_CHECK_ALL 0x00100
-#define ROPT_LOOKBEHIND_SEEN 0x00200
-#define ROPT_EVAL_SEEN 0x00400
-#define ROPT_CANY_SEEN 0x00800
+#define ROPT_ANCH_BOL 0x00000001
+#define ROPT_ANCH_MBOL 0x00000002
+#define ROPT_ANCH_SBOL 0x00000004
+#define ROPT_ANCH_GPOS 0x00000008
+#define ROPT_SKIP 0x00000010
+#define ROPT_IMPLICIT 0x00000020 /* Converted .* to ^.* */
+#define ROPT_NOSCAN 0x00000040 /* Check-string always at start. */
+#define ROPT_GPOS_SEEN 0x00000080
+#define ROPT_CHECK_ALL 0x00000100
+#define ROPT_LOOKBEHIND_SEEN 0x00000200
+#define ROPT_EVAL_SEEN 0x00000400
+#define ROPT_CANY_SEEN 0x00000800
#define ROPT_SANY_SEEN ROPT_CANY_SEEN /* src bckwrd cmpt */
/* 0xf800 of reganch is used by PMf_COMPILETIME */
-#define ROPT_UTF8 0x10000
-#define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */
-#define ROPT_COPY_DONE 0x40000 /* subbeg is a copy of the string */
-#define ROPT_TAINTED_SEEN 0x80000
+#define ROPT_UTF8 0x00010000
+#define ROPT_NAUGHTY 0x00020000 /* how exponential is this pattern? */
+#define ROPT_COPY_DONE 0x00040000 /* subbeg is a copy of the string */
+#define ROPT_TAINTED_SEEN 0x00080000
#define ROPT_MATCH_UTF8 0x10000000 /* subbeg is utf-8 */
-#define RE_USE_INTUIT_NOML 0x0100000 /* Best to intuit before matching */
-#define RE_USE_INTUIT_ML 0x0200000
-#define REINT_AUTORITATIVE_NOML 0x0400000 /* Can trust a positive answer */
-#define REINT_AUTORITATIVE_ML 0x0800000
-#define REINT_ONCE_NOML 0x1000000 /* Intuit can succed once only. */
-#define REINT_ONCE_ML 0x2000000
-#define RE_INTUIT_ONECHAR 0x4000000
-#define RE_INTUIT_TAIL 0x8000000
+#define RE_USE_INTUIT_NOML 0x00100000 /* Best to intuit before matching */
+#define RE_USE_INTUIT_ML 0x00200000
+#define REINT_AUTORITATIVE_NOML 0x00400000 /* Can trust a positive answer */
+#define REINT_AUTORITATIVE_ML 0x00800000
+#define REINT_ONCE_NOML 0x01000000 /* Intuit can succed once only. */
+#define REINT_ONCE_ML 0x02000000
+#define RE_INTUIT_ONECHAR 0x04000000
+#define RE_INTUIT_TAIL 0x08000000
+
#define RE_USE_INTUIT (RE_USE_INTUIT_NOML|RE_USE_INTUIT_ML)
#define REINT_AUTORITATIVE (REINT_AUTORITATIVE_NOML|REINT_AUTORITATIVE_ML)
#define RX_MATCH_COPIED_set(prog,t) ((t) \
? RX_MATCH_COPIED_on(prog) \
: RX_MATCH_COPIED_off(prog))
+#endif /* PLUGGABLE_RE_EXTENSION */
+
+/* Stuff that needs to be included in the plugable extension goes below here */
+
+#define RE_DEBUG_BIT 0x20000000
+#define RX_DEBUG(prog) ((prog)->reganch & RE_DEBUG_BIT)
+#define RX_DEBUG_on(prog) ((prog)->reganch |= RE_DEBUG_BIT)
#ifdef PERL_OLD_COPY_ON_WRITE
#define RX_MATCH_COPY_FREE(rx) \
};
typedef struct _reg_trie_accepted reg_trie_accepted;
+/* some basic information about the current match that is created by
+ * Perl_regexec_flags and then passed to regtry(), regmatch() etc */
+
+typedef struct {
+ regexp *prog;
+ char *bol;
+ char *till;
+ SV *sv;
+ char *ganch;
+} regmatch_info;
+
/* structures for holding and saving the state maintained by regmatch() */
typedef I32 CHECKPOINT;
-typedef struct re_cc_state
-{
- I32 ss;
- regnode *node;
- struct re_cc_state *prev;
- struct regmatch_state *cc; /* state corresponding to the current curly */
- regexp *re;
-} re_cc_state;
-
-
typedef enum {
resume_TRIE1,
resume_TRIE2,
+ resume_EVAL,
resume_CURLYX,
resume_WHILEM1,
resume_WHILEM2,
resume_CURLYM1,
resume_CURLYM2,
resume_CURLYM3,
- resume_CURLYM4,
resume_IFMATCH,
resume_PLUS1,
resume_PLUS2,
resume_PLUS3,
- resume_PLUS4,
- resume_END
+ resume_PLUS4
} regmatch_resume_states;
regmatch_resume_states resume_state; /* where to jump to on return */
regnode *scan; /* Current node. */
regnode *next; /* Next node. */
- bool minmod; /* the next "{n.m}" is a "{n,m}?" */
+ bool minmod; /* the next "{n,m}" is a "{n,m}?" */
bool sw; /* the condition value in (?(cond)a|b) */
int logical;
I32 unwind; /* savestack index of current unwind block */
I32 ln; /* len or last */
union {
+
+ /* this is a fake union member that matches the first element
+ * of each member that needs to store positive backtrack
+ * information */
+ struct {
+ struct regmatch_state *prev_yes_state;
+ } yes;
+
struct {
reg_trie_accepted *accept_buff;
U32 accepted; /* how many accepting states we have seen */
} trie;
struct {
- CHECKPOINT cp; /* remember current savestack indexes */
- CHECKPOINT lastcp;
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ regexp *prev_rex;
+ int toggleutf;
+ CHECKPOINT cp; /* remember current savestack indexes */
+ CHECKPOINT lastcp;
} eval;
struct {
} whilem;
struct {
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
I32 paren;
I32 c1, c2; /* case fold search */
CHECKPOINT lastcp;
I32 l;
I32 matches;
I32 maxwanted;
+ bool minmod;
} curlym;
struct {
} plus; /* and CURLYN/CURLY/STAR */
struct {
- CHECKPOINT cp; /* remember current savestack indexes */
- CHECKPOINT lastcp;
- struct regmatch_state *savecc;
- re_cc_state *cur_call_cc;
- regexp *end_re;
- } end;
+ /* this first element must match u.yes */
+ struct regmatch_state *prev_yes_state;
+ I32 wanted;
+ } ifmatch; /* and SUSPEND/UNLESSM */
} u;
-
- re_cc_state *reg_call_cc; /* saved value of PL_reg_call_cc */
} regmatch_state;
/* how many regmatch_state structs to allocate as a single slab.
#define PL_reg_flags PL_reg_state.re_state_reg_flags
#define PL_bostr PL_reg_state.re_state_bostr
#define PL_reginput PL_reg_state.re_state_reginput
-#define PL_regbol PL_reg_state.re_state_regbol
#define PL_regeol PL_reg_state.re_state_regeol
#define PL_regstartp PL_reg_state.re_state_regstartp
#define PL_regendp PL_reg_state.re_state_regendp
#define PL_reglastparen PL_reg_state.re_state_reglastparen
#define PL_reglastcloseparen PL_reg_state.re_state_reglastcloseparen
-#define PL_regtill PL_reg_state.re_state_regtill
#define PL_reg_start_tmp PL_reg_state.re_state_reg_start_tmp
#define PL_reg_start_tmpl PL_reg_state.re_state_reg_start_tmpl
#define PL_reg_eval_set PL_reg_state.re_state_reg_eval_set
-#define PL_regnarrate PL_reg_state.re_state_regnarrate
#define PL_regindent PL_reg_state.re_state_regindent
-#define PL_reg_call_cc PL_reg_state.re_state_reg_call_cc
-#define PL_reg_re PL_reg_state.re_state_reg_re
-#define PL_reg_ganch PL_reg_state.re_state_reg_ganch
-#define PL_reg_sv PL_reg_state.re_state_reg_sv
#define PL_reg_match_utf8 PL_reg_state.re_state_reg_match_utf8
#define PL_reg_magic PL_reg_state.re_state_reg_magic
#define PL_reg_oldpos PL_reg_state.re_state_reg_oldpos
U32 re_state_reg_flags; /* from regexec.c */
char *re_state_bostr;
char *re_state_reginput; /* String-input pointer. */
- char *re_state_regbol; /* Beginning of input, for ^ check. */
char *re_state_regeol; /* End of input, for $ check. */
I32 *re_state_regstartp; /* Pointer to startp array. */
I32 *re_state_regendp; /* Ditto for endp. */
U32 *re_state_reglastparen; /* Similarly for lastparen. */
U32 *re_state_reglastcloseparen; /* Similarly for lastcloseparen. */
- char *re_state_regtill; /* How far we are required to go. */
char **re_state_reg_start_tmp; /* from regexec.c */
U32 re_state_reg_start_tmpl; /* from regexec.c */
I32 re_state_reg_eval_set; /* from regexec.c */
- I32 re_state_regnarrate; /* from regexec.c */
int re_state_regindent; /* from regexec.c */
- struct re_cc_state *re_state_reg_call_cc; /* from regexec.c */
- regexp *re_state_reg_re; /* from regexec.c */
- char *re_state_reg_ganch; /* from regexec.c */
- SV *re_state_reg_sv; /* from regexec.c */
bool re_state_reg_match_utf8; /* from regexec.c */
MAGIC *re_state_reg_magic; /* from regexec.c */
I32 re_state_reg_oldpos; /* from regexec.c */
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