X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=regexec.c;h=841b9008c28a3bd97a0a910040e75afcc456c4de;hb=a1e2a3203e4b30744c9b7c687f0438326033e3c3;hp=250704c2285e9623483139618828ffa78e855057;hpb=dc45a647708b6c5442e1362e6b6e7a2583c30346;p=p5sagit%2Fp5-mst-13.2.git diff --git a/regexec.c b/regexec.c index 250704c..841b900 100644 --- a/regexec.c +++ b/regexec.c @@ -19,6 +19,26 @@ * with the POSIX routines of the same names. */ +#ifdef PERL_EXT_RE_BUILD +/* need to replace pregcomp et al, so enable that */ +# ifndef PERL_IN_XSUB_RE +# define PERL_IN_XSUB_RE +# endif +/* need access to debugger hooks */ +# ifndef DEBUGGING +# define DEBUGGING +# endif +#endif + +#ifdef PERL_IN_XSUB_RE +/* We *really* need to overwrite these symbols: */ +# define Perl_regexec_flags my_regexec +# define Perl_regdump my_regdump +# define Perl_regprop my_regprop +/* *These* symbols are masked to allow static link. */ +# define Perl_pregexec my_pregexec +#endif + /*SUPPRESS 112*/ /* * pregcomp and pregexec -- regsub and regerror are not used in perl @@ -42,7 +62,7 @@ * **** Alterations to Henry's code are... **** - **** Copyright (c) 1991-1997, Larry Wall + **** Copyright (c) 1991-1998, Larry Wall **** **** You may distribute under the terms of either the GNU General Public **** License or the Artistic License, as specified in the README file. @@ -53,57 +73,24 @@ */ #include "EXTERN.h" #include "perl.h" -#include "regcomp.h" -static char * reginput; /* String-input pointer. */ -static char * regbol; /* Beginning of input, for ^ check. */ -static char * regeol; /* End of input, for $ check. */ -static char ** regstartp; /* Pointer to startp array. */ -static char ** regendp; /* Ditto for endp. */ -static U32 * reglastparen; /* Similarly for lastparen. */ -static char * regtill; /* How far we are required to go. */ -static char regprev; /* char before regbol, \n if none */ - -static char * regprecomp; /* uncompiled string. */ -static I32 regnpar; /* () count. */ -static I32 regsize; /* Largest OPEN seens. */ -static char ** reg_start_tmp; -static U32 reg_start_tmpl; -static struct reg_data *data; -static char *bostr; - -static U32 reg_flags; /* tainted/warned */ -static I32 reg_eval_set; +#include "regcomp.h" #define RF_tainted 1 /* tainted information used? */ #define RF_warned 2 /* warned about big count? */ -#define RF_evaled 4 /* Did an EVAL? */ +#define RF_evaled 4 /* Did an EVAL with setting? */ +#define RF_utf8 8 /* String contains multibyte chars? */ + +#define UTF (PL_reg_flags & RF_utf8) + +#define RS_init 1 /* eval environment created */ +#define RS_set 2 /* replsv value is set */ #ifndef STATIC #define STATIC static #endif -#ifdef DEBUGGING -static I32 regnarrate = 0; -static regnode* regprogram = 0; -#endif - -/* Current curly descriptor */ -typedef struct curcur CURCUR; -struct curcur { - int parenfloor; /* how far back to strip paren data */ - int cur; /* how many instances of scan we've matched */ - int min; /* the minimal number of scans to match */ - int max; /* the maximal number of scans to match */ - int minmod; /* whether to work our way up or down */ - regnode * scan; /* the thing to match */ - regnode * next; /* what has to match after it */ - char * lastloc; /* where we started matching this scan */ - CURCUR * oldcc; /* current curly before we started this one */ -}; - -static CURCUR* regcc; - +#ifndef PERL_OBJECT typedef I32 CHECKPOINT; /* @@ -114,38 +101,66 @@ static I32 regmatch _((regnode *prog)); static I32 regrepeat _((regnode *p, I32 max)); static I32 regrepeat_hard _((regnode *p, I32 max, I32 *lp)); static I32 regtry _((regexp *prog, char *startpos)); + static bool reginclass _((char *p, I32 c)); +static bool reginclassutf8 _((regnode *f, U8* p)); static CHECKPOINT regcppush _((I32 parenfloor)); static char * regcppop _((void)); +static char * regcp_set_to _((I32 ss)); +static void cache_re _((regexp *prog)); +#endif + +#define REGINCLASS(p,c) (*(p) ? reginclass(p,c) : ANYOF_TEST(p,c)) +#define REGINCLASSUTF8(f,p) (ARG1(f) ? reginclassutf8(f,p) : swash_fetch((SV*)PL_regdata->data[ARG2(f)],p)) -static CHECKPOINT +#define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv)) +#define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b) + +#ifndef PERL_OBJECT +static U8 * reghop _((U8 *pos, I32 off)); +static U8 * reghopmaybe _((U8 *pos, I32 off)); +#endif +#define reghop_c(pos,off) ((char*)reghop((U8*)pos, off)) +#define reghopmaybe_c(pos,off) ((char*)reghopmaybe((U8*)pos, off)) +#define HOP(pos,off) (UTF ? reghop((U8*)pos, off) : (U8*)(pos + off)) +#define HOPMAYBE(pos,off) (UTF ? reghopmaybe((U8*)pos, off) : (U8*)(pos + off)) +#define HOPc(pos,off) ((char*)HOP(pos,off)) +#define HOPMAYBEc(pos,off) ((char*)HOPMAYBE(pos,off)) + +STATIC CHECKPOINT regcppush(I32 parenfloor) { dTHR; - int retval = savestack_ix; - int i = (regsize - parenfloor) * 4; + int retval = PL_savestack_ix; + int i = (PL_regsize - parenfloor) * 4; int p; SSCHECK(i + 5); - for (p = regsize; p > parenfloor; p--) { - SSPUSHPTR(regendp[p]); - SSPUSHPTR(regstartp[p]); - SSPUSHPTR(reg_start_tmp[p]); + for (p = PL_regsize; p > parenfloor; p--) { + SSPUSHPTR(PL_regendp[p]); + SSPUSHPTR(PL_regstartp[p]); + SSPUSHPTR(PL_reg_start_tmp[p]); SSPUSHINT(p); } - SSPUSHINT(regsize); - SSPUSHINT(*reglastparen); - SSPUSHPTR(reginput); + SSPUSHINT(PL_regsize); + SSPUSHINT(*PL_reglastparen); + SSPUSHPTR(PL_reginput); SSPUSHINT(i + 3); SSPUSHINT(SAVEt_REGCONTEXT); return retval; } /* These are needed since we do not localize EVAL nodes: */ -# define REGCP_SET DEBUG_r(PerlIO_printf(Perl_debug_log, " Setting an EVAL scope, savestack=%i\n", savestack_ix)); lastcp = savestack_ix -# define REGCP_UNWIND DEBUG_r(lastcp != savestack_ix ? PerlIO_printf(Perl_debug_log," Clearing an EVAL scope, savestack=%i..%i\n", lastcp, savestack_ix) : 0); regcpblow(lastcp) +# define REGCP_SET DEBUG_r(PerlIO_printf(Perl_debug_log, \ + " Setting an EVAL scope, savestack=%i\n", \ + PL_savestack_ix)); lastcp = PL_savestack_ix -static char * +# define REGCP_UNWIND DEBUG_r(lastcp != PL_savestack_ix ? \ + PerlIO_printf(Perl_debug_log, \ + " Clearing an EVAL scope, savestack=%i..%i\n", \ + lastcp, PL_savestack_ix) : 0); regcpblow(lastcp) + +STATIC char * regcppop(void) { dTHR; @@ -156,37 +171,60 @@ regcppop(void) assert(i == SAVEt_REGCONTEXT); i = SSPOPINT; input = (char *) SSPOPPTR; - *reglastparen = SSPOPINT; - regsize = SSPOPINT; + *PL_reglastparen = SSPOPINT; + PL_regsize = SSPOPINT; for (i -= 3; i > 0; i -= 4) { paren = (U32)SSPOPINT; - reg_start_tmp[paren] = (char *) SSPOPPTR; - regstartp[paren] = (char *) SSPOPPTR; + PL_reg_start_tmp[paren] = (char *) SSPOPPTR; + PL_regstartp[paren] = (char *) SSPOPPTR; tmps = (char*)SSPOPPTR; - if (paren <= *reglastparen) - regendp[paren] = tmps; + if (paren <= *PL_reglastparen) + PL_regendp[paren] = tmps; DEBUG_r( - PerlIO_printf(Perl_debug_log, " restoring \\%d to %d(%d)..%d%s\n", - paren, regstartp[paren] - regbol, - reg_start_tmp[paren] - regbol, - regendp[paren] - regbol, - (paren > *reglastparen ? "(no)" : "")); + PerlIO_printf(Perl_debug_log, + " restoring \\%d to %d(%d)..%d%s\n", + paren, PL_regstartp[paren] - PL_regbol, + PL_reg_start_tmp[paren] - PL_regbol, + PL_regendp[paren] - PL_regbol, + (paren > *PL_reglastparen ? "(no)" : "")); ); } DEBUG_r( - if (*reglastparen + 1 <= regnpar) { - PerlIO_printf(Perl_debug_log, " restoring \\%d..\\%d to undef\n", - *reglastparen + 1, regnpar); + if (*PL_reglastparen + 1 <= PL_regnpar) { + PerlIO_printf(Perl_debug_log, + " restoring \\%d..\\%d to undef\n", + *PL_reglastparen + 1, PL_regnpar); } ); - for (paren = *reglastparen + 1; paren <= regnpar; paren++) { - if (paren > regsize) - regstartp[paren] = Nullch; - regendp[paren] = Nullch; + for (paren = *PL_reglastparen + 1; paren <= PL_regnpar; paren++) { + if (paren > PL_regsize) + PL_regstartp[paren] = Nullch; + PL_regendp[paren] = Nullch; } return input; } +STATIC char * +regcp_set_to(I32 ss) +{ + dTHR; + I32 tmp = PL_savestack_ix; + + PL_savestack_ix = ss; + regcppop(); + PL_savestack_ix = tmp; + return Nullch; +} + +typedef struct re_cc_state +{ + I32 ss; + regnode *node; + struct re_cc_state *prev; + CURCUR *cc; + regexp *re; +} re_cc_state; + #define regcpblow(cp) LEAVE_SCOPE(cp) /* @@ -197,7 +235,8 @@ regcppop(void) - pregexec - match a regexp against a string */ I32 -pregexec(register regexp *prog, char *stringarg, register char *strend, char *strbeg, I32 minend, SV *screamer, U32 nosave) +pregexec(register regexp *prog, char *stringarg, register char *strend, + char *strbeg, I32 minend, SV *screamer, U32 nosave) /* strend: pointer to null at end of string */ /* strbeg: real beginning of string */ /* minend: end of match must be >=minend after stringarg. */ @@ -207,18 +246,33 @@ pregexec(register regexp *prog, char *stringarg, register char *strend, char *st regexec_flags(prog, stringarg, strend, strbeg, minend, screamer, NULL, nosave ? 0 : REXEC_COPY_STR); } + +STATIC void +cache_re(regexp *prog) +{ + dTHR; + PL_regprecomp = prog->precomp; /* Needed for FAIL. */ +#ifdef DEBUGGING + PL_regprogram = prog->program; +#endif + PL_regnpar = prog->nparens; + PL_regdata = prog->data; + PL_reg_re = prog; +} /* - regexec_flags - match a regexp against a string */ I32 -regexec_flags(register regexp *prog, char *stringarg, register char *strend, char *strbeg, I32 minend, SV *screamer, void *data, U32 flags) +regexec_flags(register regexp *prog, char *stringarg, register char *strend, + char *strbeg, I32 minend, SV *screamer, void *data, U32 flags) /* strend: pointer to null at end of string */ /* strbeg: real beginning of string */ /* minend: end of match must be >=minend after stringarg. */ /* data: May be used for some additional optimizations. */ /* nosave: For optimizations. */ { + dTHR; register char *s; register regnode *c; register char *startpos = stringarg; @@ -227,19 +281,19 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha I32 dontbother = 0; /* how many characters not to try at end */ CURCUR cc; I32 start_shift = 0; /* Offset of the start to find - constant substr. */ - I32 end_shift = 0; /* Same for the end. */ + constant substr. */ /* CC */ + I32 end_shift = 0; /* Same for the end. */ /* CC */ I32 scream_pos = -1; /* Internal iterator of scream. */ char *scream_olds; + SV* oreplsv = GvSV(PL_replgv); cc.cur = 0; cc.oldcc = 0; - regcc = &cc; + PL_regcc = &cc; - regprecomp = prog->precomp; /* Needed for error messages. */ + cache_re(prog); #ifdef DEBUGGING - regnarrate = debug & 512; - regprogram = prog->program; + PL_regnarrate = PL_debug & 512; #endif /* Be paranoid... */ @@ -252,21 +306,36 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha if (strend - startpos < minlen) goto phooey; if (startpos == strbeg) /* is ^ valid at stringarg? */ - regprev = '\n'; + PL_regprev = '\n'; else { - regprev = stringarg[-1]; - if (!multiline && regprev == '\n') - regprev = '\0'; /* force ^ to NOT match */ + PL_regprev = (U32)stringarg[-1]; + if (!PL_multiline && PL_regprev == '\n') + PL_regprev = '\0'; /* force ^ to NOT match */ } /* Check validity of program. */ - if (UCHARAT(prog->program) != MAGIC) { + if (UCHARAT(prog->program) != REG_MAGIC) { FAIL("corrupted regexp program"); } - regnpar = prog->nparens; - reg_flags = 0; - reg_eval_set = 0; + PL_reg_flags = 0; + PL_reg_eval_set = 0; + + if (prog->reganch & ROPT_UTF8) + PL_reg_flags |= RF_utf8; + + /* Mark beginning of line for ^ and lookbehind. */ + PL_regbol = startpos; + PL_bostr = strbeg; + + /* Mark end of line for $ (and such) */ + PL_regeol = strend; + + /* see how far we have to get to not match where we matched before */ + PL_regtill = startpos+minend; + + /* We start without call_cc context. */ + PL_reg_call_cc = 0; /* If there is a "must appear" string, look for it. */ s = startpos; @@ -274,13 +343,14 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha && prog->check_substr != Nullsv && !(prog->reganch & ROPT_ANCH_GPOS) && (!(prog->reganch & (ROPT_ANCH_BOL | ROPT_ANCH_MBOL)) - || (multiline && prog->check_substr == prog->anchored_substr)) ) + || (PL_multiline && prog->check_substr == prog->anchored_substr)) ) { - start_shift = prog->check_offset_min; + char *t; + start_shift = prog->check_offset_min; /* okay to underestimate on CC */ /* Should be nonnegative! */ - end_shift = minlen - start_shift - SvCUR(prog->check_substr); + end_shift = minlen - start_shift - CHR_SVLEN(prog->check_substr); if (screamer) { - if (screamfirst[BmRARE(prog->check_substr)] >= 0) + if (PL_screamfirst[BmRARE(prog->check_substr)] >= 0) s = screaminstr(screamer, prog->check_substr, start_shift + (stringarg - strbeg), end_shift, &scream_pos, 0); @@ -291,40 +361,43 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha else s = fbm_instr((unsigned char*)s + start_shift, (unsigned char*)strend - end_shift, - prog->check_substr); + prog->check_substr, 0); if (!s) { ++BmUSEFUL(prog->check_substr); /* hooray */ goto phooey; /* not present */ - } else if ((s - stringarg) > prog->check_offset_max) { + } + else if (s - stringarg > prog->check_offset_max && + (UTF + ? ((t = reghopmaybe_c(s, -(prog->check_offset_max))) && t >= stringarg) + : (t = s - prog->check_offset_max) != 0 + ) + ) + { ++BmUSEFUL(prog->check_substr); /* hooray/2 */ - s -= prog->check_offset_max; - } else if (!prog->naughty + s = t; + } + else if (!(prog->reganch & ROPT_NAUGHTY) && --BmUSEFUL(prog->check_substr) < 0 && prog->check_substr == prog->float_substr) { /* boo */ SvREFCNT_dec(prog->check_substr); prog->check_substr = Nullsv; /* disable */ prog->float_substr = Nullsv; /* clear */ s = startpos; - } else s = startpos; + } + else + s = startpos; } - /* Mark beginning of line for ^ and lookbehind. */ - regbol = startpos; - bostr = strbeg; - - /* Mark end of line for $ (and such) */ - regeol = strend; - - /* see how far we have to get to not match where we matched before */ - regtill = startpos+minend; - DEBUG_r( PerlIO_printf(Perl_debug_log, - "Matching `%.60s%s' against `%.*s%s'\n", - prog->precomp, + "%sMatching%s `%s%.60s%s%s' against `%s%.*s%s%s'\n", + PL_colors[4],PL_colors[5],PL_colors[0], + prog->precomp, + PL_colors[1], (strlen(prog->precomp) > 60 ? "..." : ""), + PL_colors[0], (strend - startpos > 60 ? 60 : strend - startpos), - startpos, + startpos, PL_colors[1], (strend - startpos > 60 ? "..." : "")) ); @@ -334,17 +407,17 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha if (regtry(prog, startpos)) goto got_it; else if (!(prog->reganch & ROPT_ANCH_GPOS) && - (multiline || (prog->reganch & ROPT_IMPLICIT) + (PL_multiline || (prog->reganch & ROPT_IMPLICIT) || (prog->reganch & ROPT_ANCH_MBOL))) { if (minlen) dontbother = minlen - 1; - strend -= dontbother; + strend = HOPc(strend, -dontbother); /* for multiline we only have to try after newlines */ if (s > startpos) s--; while (s < strend) { - if (*s++ == '\n') { + if (*s++ == '\n') { /* don't need PL_utf8skip here */ if (s < strend && regtry(prog, s)) goto got_it; } @@ -358,14 +431,27 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha /* we have /x+whatever/ */ /* it must be a one character string */ char ch = SvPVX(prog->anchored_substr)[0]; - while (s < strend) { - if (*s == ch) { - if (regtry(prog, s)) goto got_it; - s++; - while (s < strend && *s == ch) + if (UTF) { + while (s < strend) { + if (*s == ch) { + if (regtry(prog, s)) goto got_it; + s += UTF8SKIP(s); + while (s < strend && *s == ch) + s += UTF8SKIP(s); + } + s += UTF8SKIP(s); + } + } + else { + while (s < strend) { + if (*s == ch) { + if (regtry(prog, s)) goto got_it; s++; + while (s < strend && *s == ch) + s++; + } + s++; } - s++; } } /*SUPPRESS 560*/ @@ -379,50 +465,80 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha I32 back_min = prog->anchored_substr ? prog->anchored_offset : prog->float_min_offset; I32 delta = back_max - back_min; - char *last = strend - SvCUR(must) - back_min; /* Cannot start after this */ - char *last1 = s - 1; /* Last position checked before */ + char *last = HOPc(strend, 0-(CHR_SVLEN(must) + back_min)); /* Cannot start after this */ + char *last1; /* Last position checked before */ + + if (s > PL_bostr) + last1 = HOPc(s, -1); + else + last1 = s - 1; /* bogus */ /* XXXX check_substr already used to find `s', can optimize if check_substr==must. */ scream_pos = -1; dontbother = end_shift; - strend -= dontbother; + strend = HOPc(strend, -dontbother); while ( (s <= last) && (screamer - ? (s = screaminstr(screamer, must, s + back_min - strbeg, + ? (s = screaminstr(screamer, must, HOPc(s, back_min) - strbeg, end_shift, &scream_pos, 0)) - : (s = fbm_instr((unsigned char*)s + back_min, - (unsigned char*)strend, must))) ) { - if (s - back_max > last1) { - last1 = s - back_min; - s = s - back_max; - } else { - char *t = last1 + 1; - - last1 = s - back_min; + : (s = fbm_instr((unsigned char*)HOP(s, back_min), + (unsigned char*)strend, must, 0))) ) { + if (HOPc(s, -back_max) > last1) { + last1 = HOPc(s, -back_min); + s = HOPc(s, -back_max); + } + else { + char *t = (last1 >= PL_bostr) ? HOPc(last1, 1) : last1 + 1; + + last1 = HOPc(s, -back_min); s = t; } - while (s <= last1) { - if (regtry(prog, s)) - goto got_it; - s++; + if (UTF) { + while (s <= last1) { + if (regtry(prog, s)) + goto got_it; + s += UTF8SKIP(s); + } + } + else { + while (s <= last1) { + if (regtry(prog, s)) + goto got_it; + s++; + } } } goto phooey; - } else if (c = prog->regstclass) { + } + else if (c = prog->regstclass) { I32 doevery = (prog->reganch & ROPT_SKIP) == 0; - char *Class; + char *cc; if (minlen) dontbother = minlen - 1; - strend -= dontbother; /* don't bother with what can't match */ + strend = HOPc(strend, -dontbother); /* don't bother with what can't match */ tmp = 1; /* We know what class it must start with. */ switch (OP(c)) { + case ANYOFUTF8: + cc = (char *) OPERAND(c); + while (s < strend) { + if (REGINCLASSUTF8(c, (U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case ANYOF: - Class = (char *) OPERAND(c); + cc = (char *) OPERAND(c); while (s < strend) { - if (reginclass(Class, *s)) { + if (REGINCLASS(cc, *s)) { if (tmp && regtry(prog, s)) goto got_it; else @@ -434,12 +550,14 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha } break; case BOUNDL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case BOUND: - if (minlen) - dontbother++,strend--; - tmp = (s != startpos) ? UCHARAT(s - 1) : regprev; + if (minlen) { + dontbother++; + strend -= 1; + } + tmp = (s != startpos) ? UCHARAT(s - 1) : PL_regprev; tmp = ((OP(c) == BOUND ? isALNUM(tmp) : isALNUM_LC(tmp)) != 0); while (s < strend) { if (tmp == !(OP(c) == BOUND ? isALNUM(*s) : isALNUM_LC(*s))) { @@ -452,13 +570,39 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha if ((minlen || tmp) && regtry(prog,s)) goto got_it; break; + case BOUNDLUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case BOUNDUTF8: + if (minlen) { + dontbother++; + strend = reghop_c(strend, -1); + } + tmp = (I32)(s != startpos) ? utf8_to_uv(reghop((U8*)s, -1), 0) : PL_regprev; + tmp = ((OP(c) == BOUND ? isALNUM_uni(tmp) : isALNUM_LC_uni(tmp)) != 0); + while (s < strend) { + if (tmp == !(OP(c) == BOUND ? + swash_fetch(PL_utf8_alnum, (U8*)s) : + isALNUM_LC_utf8((U8*)s))) + { + tmp = !tmp; + if (regtry(prog, s)) + goto got_it; + } + s += UTF8SKIP(s); + } + if ((minlen || tmp) && regtry(prog,s)) + goto got_it; + break; case NBOUNDL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case NBOUND: - if (minlen) - dontbother++,strend--; - tmp = (s != startpos) ? UCHARAT(s - 1) : regprev; + if (minlen) { + dontbother++; + strend -= 1; + } + tmp = (s != startpos) ? UCHARAT(s - 1) : PL_regprev; tmp = ((OP(c) == NBOUND ? isALNUM(tmp) : isALNUM_LC(tmp)) != 0); while (s < strend) { if (tmp == !(OP(c) == NBOUND ? isALNUM(*s) : isALNUM_LC(*s))) @@ -470,6 +614,28 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha if ((minlen || !tmp) && regtry(prog,s)) goto got_it; break; + case NBOUNDLUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case NBOUNDUTF8: + if (minlen) { + dontbother++; + strend = reghop_c(strend, -1); + } + tmp = (I32)(s != startpos) ? utf8_to_uv(reghop((U8*)s, -1), 0) : PL_regprev; + tmp = ((OP(c) == NBOUND ? isALNUM_uni(tmp) : isALNUM_LC_uni(tmp)) != 0); + while (s < strend) { + if (tmp == !(OP(c) == NBOUND ? + swash_fetch(PL_utf8_alnum, (U8*)s) : + isALNUM_LC_utf8((U8*)s))) + tmp = !tmp; + else if (regtry(prog, s)) + goto got_it; + s += UTF8SKIP(s); + } + if ((minlen || !tmp) && regtry(prog,s)) + goto got_it; + break; case ALNUM: while (s < strend) { if (isALNUM(*s)) { @@ -483,8 +649,21 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case ALNUMUTF8: + while (s < strend) { + if (swash_fetch(PL_utf8_alnum, (U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case ALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (s < strend) { if (isALNUM_LC(*s)) { if (tmp && regtry(prog, s)) @@ -497,6 +676,20 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case ALNUMLUTF8: + PL_reg_flags |= RF_tainted; + while (s < strend) { + if (isALNUM_LC_utf8((U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case NALNUM: while (s < strend) { if (!isALNUM(*s)) { @@ -510,8 +703,21 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case NALNUMUTF8: + while (s < strend) { + if (!swash_fetch(PL_utf8_alnum, (U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case NALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (s < strend) { if (!isALNUM_LC(*s)) { if (tmp && regtry(prog, s)) @@ -524,6 +730,20 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case NALNUMLUTF8: + PL_reg_flags |= RF_tainted; + while (s < strend) { + if (!isALNUM_LC_utf8((U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case SPACE: while (s < strend) { if (isSPACE(*s)) { @@ -537,8 +757,21 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case SPACEUTF8: + while (s < strend) { + if (*s == ' ' || swash_fetch(PL_utf8_space,(U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case SPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (s < strend) { if (isSPACE_LC(*s)) { if (tmp && regtry(prog, s)) @@ -551,6 +784,20 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case SPACELUTF8: + PL_reg_flags |= RF_tainted; + while (s < strend) { + if (*s == ' ' || isSPACE_LC_utf8((U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case NSPACE: while (s < strend) { if (!isSPACE(*s)) { @@ -564,8 +811,21 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case NSPACEUTF8: + while (s < strend) { + if (!(*s == ' ' || swash_fetch(PL_utf8_space,(U8*)s))) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case NSPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (s < strend) { if (!isSPACE_LC(*s)) { if (tmp && regtry(prog, s)) @@ -578,6 +838,20 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case NSPACELUTF8: + PL_reg_flags |= RF_tainted; + while (s < strend) { + if (!(*s == ' ' || isSPACE_LC_utf8((U8*)s))) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case DIGIT: while (s < strend) { if (isDIGIT(*s)) { @@ -591,6 +865,19 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case DIGITUTF8: + while (s < strend) { + if (swash_fetch(PL_utf8_digit,(U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; case NDIGIT: while (s < strend) { if (!isDIGIT(*s)) { @@ -604,6 +891,19 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha s++; } break; + case NDIGITUTF8: + while (s < strend) { + if (!swash_fetch(PL_utf8_digit,(U8*)s)) { + if (tmp && regtry(prog, s)) + goto got_it; + else + tmp = doevery; + } + else + tmp = 1; + s += UTF8SKIP(s); + } + break; } } else { @@ -618,32 +918,46 @@ regexec_flags(register regexp *prog, char *stringarg, register char *strend, cha if (!last) { last = scream_olds; /* Only one occurence. */ } - } else { + } + else { STRLEN len; char *little = SvPV(prog->float_substr, len); - last = rninstr(s, strend, little, little + len); + if (len) + last = rninstr(s, strend, little, little + len); + else + last = strend; /* matching `$' */ } if (last == NULL) goto phooey; /* Should not happen! */ - dontbother = strend - last - 1; + dontbother = strend - last + prog->float_min_offset; } if (minlen && (dontbother < minlen)) dontbother = minlen - 1; - strend -= dontbother; + strend -= dontbother; /* this one's always in bytes! */ /* We don't know much -- general case. */ - do { - if (regtry(prog, s)) - goto got_it; - } while (s++ < strend); + if (UTF) { + for (;;) { + if (regtry(prog, s)) + goto got_it; + if (s >= strend) + break; + s += UTF8SKIP(s); + }; + } + else { + do { + if (regtry(prog, s)) + goto got_it; + } while (s++ < strend); + } } /* Failure. */ goto phooey; got_it: - strend += dontbother; /* uncheat */ prog->subbeg = strbeg; - prog->subend = strend; - RX_MATCH_TAINTED_SET(prog, reg_flags & RF_tainted); + prog->subend = PL_regeol; /* strend may have been modified */ + RX_MATCH_TAINTED_set(prog, PL_reg_flags & RF_tainted); /* make sure $`, $&, $', and $digit will work later */ if (strbeg != prog->subbase) { /* second+ //g match. */ @@ -654,7 +968,7 @@ got_it: } } else { - I32 i = strend - startpos + (stringarg - strbeg); + I32 i = PL_regeol - startpos + (stringarg - strbeg); s = savepvn(strbeg, i); Safefree(prog->subbase); prog->subbase = s; @@ -669,6 +983,12 @@ got_it: } } } + /* Preserve the current value of $^R */ + if (oreplsv != GvSV(PL_replgv)) { + sv_setsv(oreplsv, GvSV(PL_replgv));/* So that when GvSV(replgv) is + restored, the value remains + the same. */ + } return 1; phooey: @@ -678,7 +998,7 @@ phooey: /* - regtry - try match at specific point */ -static I32 /* 0 failure, 1 success */ +STATIC I32 /* 0 failure, 1 success */ regtry(regexp *prog, char *startpos) { dTHR; @@ -687,23 +1007,36 @@ regtry(regexp *prog, char *startpos) register char **ep; CHECKPOINT lastcp; - reginput = startpos; - regstartp = prog->startp; - regendp = prog->endp; - reglastparen = &prog->lastparen; + if ((prog->reganch & ROPT_EVAL_SEEN) && !PL_reg_eval_set) { + PL_reg_eval_set = RS_init; + DEBUG_r(DEBUG_s( + PerlIO_printf(Perl_debug_log, " setting stack tmpbase at %i\n", + PL_stack_sp - PL_stack_base); + )); + SAVEINT(cxstack[cxstack_ix].blk_oldsp); + cxstack[cxstack_ix].blk_oldsp = PL_stack_sp - PL_stack_base; + /* Otherwise OP_NEXTSTATE will free whatever on stack now. */ + SAVETMPS; + /* Apparently this is not needed, judging by wantarray. */ + /* SAVEINT(cxstack[cxstack_ix].blk_gimme); + cxstack[cxstack_ix].blk_gimme = G_SCALAR; */ + } + PL_reginput = startpos; + PL_regstartp = prog->startp; + PL_regendp = prog->endp; + PL_reglastparen = &prog->lastparen; prog->lastparen = 0; - regsize = 0; - if (reg_start_tmpl <= prog->nparens) { - reg_start_tmpl = prog->nparens*3/2 + 3; - if(reg_start_tmp) - Renew(reg_start_tmp, reg_start_tmpl, char*); + PL_regsize = 0; + if (PL_reg_start_tmpl <= prog->nparens) { + PL_reg_start_tmpl = prog->nparens*3/2 + 3; + if(PL_reg_start_tmp) + Renew(PL_reg_start_tmp, PL_reg_start_tmpl, char*); else - New(22,reg_start_tmp, reg_start_tmpl, char*); + New(22,PL_reg_start_tmp, PL_reg_start_tmpl, char*); } sp = prog->startp; ep = prog->endp; - data = prog->data; if (prog->nparens) { for (i = prog->nparens; i >= 0; i--) { *sp++ = NULL; @@ -711,9 +1044,9 @@ regtry(regexp *prog, char *startpos) } } REGCP_SET; - if (regmatch(prog->program + 1) && reginput >= regtill) { + if (regmatch(prog->program + 1)) { prog->startp[0] = startpos; - prog->endp[0] = reginput; + prog->endp[0] = PL_reginput; return 1; } REGCP_UNWIND; @@ -734,26 +1067,27 @@ regtry(regexp *prog, char *startpos) * maybe save a little bit of pushing and popping on the stack. It also takes * advantage of machines that use a register save mask on subroutine entry. */ -static I32 /* 0 failure, 1 success */ +STATIC I32 /* 0 failure, 1 success */ regmatch(regnode *prog) { dTHR; register regnode *scan; /* Current node. */ regnode *next; /* Next node. */ regnode *inner; /* Next node in internal branch. */ - register I32 nextchar; + register I32 nextchr; /* renamed nextchr - nextchar colides with + function of same name */ register I32 n; /* no or next */ register I32 ln; /* len or last */ register char *s; /* operand or save */ - register char *locinput = reginput; + register char *locinput = PL_reginput; register I32 c1, c2, paren; /* case fold search, parenth */ int minmod = 0, sw = 0, logical = 0; #ifdef DEBUGGING - static int regindent = 0; - regindent++; + PL_regindent++; #endif - nextchar = UCHARAT(locinput); + /* Note that nextchr is a byte even in UTF */ + nextchr = UCHARAT(locinput); scan = prog; while (scan != NULL) { #define sayNO_L (logical ? (logical = 0, sw = 0, goto cont) : sayNO) @@ -769,227 +1103,466 @@ regmatch(regnode *prog) #endif DEBUG_r( { SV *prop = sv_newmortal(); - int docolor = *colors[0]; + int docolor = *PL_colors[0]; int taill = (docolor ? 10 : 7); /* 3 chars for "> <" */ - int l = (regeol - locinput > taill ? taill : regeol - locinput); - int pref_len = (locinput - bostr > (5 + taill) - l - ? (5 + taill) - l : locinput - bostr); - - if (l + pref_len < (5 + taill) && l < regeol - locinput) - l = ( regeol - locinput > (5 + taill) - pref_len - ? (5 + taill) - pref_len : regeol - locinput); + int l = (PL_regeol - locinput > taill ? taill : PL_regeol - locinput); + int pref_len = (locinput - PL_bostr > (5 + taill) - l + ? (5 + taill) - l : locinput - PL_bostr); + int pref0_len = pref_len - (locinput - PL_reginput); + + if (l + pref_len < (5 + taill) && l < PL_regeol - locinput) + l = ( PL_regeol - locinput > (5 + taill) - pref_len + ? (5 + taill) - pref_len : PL_regeol - locinput); + if (pref0_len < 0) + pref0_len = 0; regprop(prop, scan); PerlIO_printf(Perl_debug_log, - "%4i <%s%.*s%s%s%s%.*s%s>%*s|%*s%2d%s\n", - locinput - bostr, - colors[2], pref_len, locinput - pref_len, colors[3], + "%4i <%s%.*s%s%s%.*s%s%s%s%.*s%s>%*s|%3d:%*s%s\n", + locinput - PL_bostr, + PL_colors[4], pref0_len, + locinput - pref_len, PL_colors[5], + PL_colors[2], pref_len - pref0_len, + locinput - pref_len + pref0_len, PL_colors[3], (docolor ? "" : "> <"), - colors[0], l, locinput, colors[1], + PL_colors[0], l, locinput, PL_colors[1], 15 - l - pref_len + 1, "", - regindent*2, "", scan - regprogram, + scan - PL_regprogram, PL_regindent*2, "", SvPVX(prop)); } ); -#ifdef REGALIGN next = scan + NEXT_OFF(scan); if (next == scan) next = NULL; -#else - next = regnext(scan); -#endif switch (OP(scan)) { case BOL: - if (locinput == regbol - ? regprev == '\n' - : (multiline && - (nextchar || locinput < regeol) && locinput[-1] == '\n') ) + if (locinput == PL_bostr + ? PL_regprev == '\n' + : (PL_multiline && + (nextchr || locinput < PL_regeol) && locinput[-1] == '\n') ) { /* regtill = regbol; */ break; } sayNO; case MBOL: - if (locinput == regbol - ? regprev == '\n' - : ((nextchar || locinput < regeol) && locinput[-1] == '\n') ) + if (locinput == PL_bostr + ? PL_regprev == '\n' + : ((nextchr || locinput < PL_regeol) && locinput[-1] == '\n') ) { break; } sayNO; case SBOL: - if (locinput == regbol && regprev == '\n') + if (locinput == PL_regbol && PL_regprev == '\n') break; sayNO; case GPOS: - if (locinput == regbol) + if (locinput == PL_regbol) break; sayNO; case EOL: - if (multiline) + if (PL_multiline) goto meol; else goto seol; case MEOL: meol: - if ((nextchar || locinput < regeol) && nextchar != '\n') + if ((nextchr || locinput < PL_regeol) && nextchr != '\n') sayNO; break; case SEOL: seol: - if ((nextchar || locinput < regeol) && nextchar != '\n') + if ((nextchr || locinput < PL_regeol) && nextchr != '\n') sayNO; - if (regeol - locinput > 1) + if (PL_regeol - locinput > 1) sayNO; break; + case EOS: + if (PL_regeol != locinput) + sayNO; + break; + case SANYUTF8: + if (nextchr & 0x80) { + locinput += PL_utf8skip[nextchr]; + if (locinput > PL_regeol) + sayNO; + nextchr = UCHARAT(locinput); + break; + } + if (!nextchr && locinput >= PL_regeol) + sayNO; + nextchr = UCHARAT(++locinput); + break; case SANY: - if (!nextchar && locinput >= regeol) + if (!nextchr && locinput >= PL_regeol) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); break; - case ANY: - if (!nextchar && locinput >= regeol || nextchar == '\n') + case ANYUTF8: + if (nextchr & 0x80) { + locinput += PL_utf8skip[nextchr]; + if (locinput > PL_regeol) + sayNO; + nextchr = UCHARAT(locinput); + break; + } + if (!nextchr && locinput >= PL_regeol || nextchr == '\n') + sayNO; + nextchr = UCHARAT(++locinput); + break; + case REG_ANY: + if (!nextchr && locinput >= PL_regeol || nextchr == '\n') sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); break; case EXACT: s = (char *) OPERAND(scan); ln = UCHARAT(s++); /* Inline the first character, for speed. */ - if (UCHARAT(s) != nextchar) + if (UCHARAT(s) != nextchr) sayNO; - if (regeol - locinput < ln) + if (PL_regeol - locinput < ln) sayNO; if (ln > 1 && memNE(s, locinput, ln)) sayNO; locinput += ln; - nextchar = UCHARAT(locinput); + nextchr = UCHARAT(locinput); break; case EXACTFL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case EXACTF: s = (char *) OPERAND(scan); ln = UCHARAT(s++); + + if (UTF) { + char *l = locinput; + char *e = s + ln; + c1 = OP(scan) == EXACTF; + while (s < e) { + if (l >= PL_regeol) + sayNO; + if (utf8_to_uv((U8*)s, 0) != (c1 ? + toLOWER_utf8((U8*)l) : + toLOWER_LC_utf8((U8*)l))) + { + sayNO; + } + s += UTF8SKIP(s); + l += UTF8SKIP(l); + } + locinput = l; + nextchr = UCHARAT(locinput); + break; + } + /* Inline the first character, for speed. */ - if (UCHARAT(s) != nextchar && + if (UCHARAT(s) != nextchr && UCHARAT(s) != ((OP(scan) == EXACTF) - ? fold : fold_locale)[nextchar]) + ? PL_fold : PL_fold_locale)[nextchr]) sayNO; - if (regeol - locinput < ln) + if (PL_regeol - locinput < ln) sayNO; if (ln > 1 && (OP(scan) == EXACTF ? ibcmp(s, locinput, ln) : ibcmp_locale(s, locinput, ln))) sayNO; locinput += ln; - nextchar = UCHARAT(locinput); + nextchr = UCHARAT(locinput); + break; + case ANYOFUTF8: + s = (char *) OPERAND(scan); + if (!REGINCLASSUTF8(scan, (U8*)locinput)) + sayNO; + if (locinput >= PL_regeol) + sayNO; + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); break; case ANYOF: s = (char *) OPERAND(scan); - if (nextchar < 0) - nextchar = UCHARAT(locinput); - if (!reginclass(s, nextchar)) + if (nextchr < 0) + nextchr = UCHARAT(locinput); + if (!REGINCLASS(s, nextchr)) sayNO; - if (!nextchar && locinput >= regeol) + if (!nextchr && locinput >= PL_regeol) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); break; case ALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case ALNUM: - if (!nextchar) + if (!nextchr) sayNO; if (!(OP(scan) == ALNUM - ? isALNUM(nextchar) : isALNUM_LC(nextchar))) + ? isALNUM(nextchr) : isALNUM_LC(nextchr))) + sayNO; + nextchr = UCHARAT(++locinput); + break; + case ALNUMLUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case ALNUMUTF8: + if (!nextchr) + sayNO; + if (nextchr & 0x80) { + if (!(OP(scan) == ALNUMUTF8 + ? swash_fetch(PL_utf8_alnum, (U8*)locinput) + : isALNUM_LC_utf8((U8*)locinput))) + { + sayNO; + } + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (!(OP(scan) == ALNUMUTF8 + ? isALNUM(nextchr) : isALNUM_LC(nextchr))) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); break; case NALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case NALNUM: - if (!nextchar && locinput >= regeol) + if (!nextchr && locinput >= PL_regeol) sayNO; if (OP(scan) == NALNUM - ? isALNUM(nextchar) : isALNUM_LC(nextchar)) + ? isALNUM(nextchr) : isALNUM_LC(nextchr)) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); + break; + case NALNUMLUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case NALNUMUTF8: + if (!nextchr && locinput >= PL_regeol) + sayNO; + if (nextchr & 0x80) { + if (OP(scan) == NALNUMUTF8 + ? swash_fetch(PL_utf8_alnum, (U8*)locinput) + : isALNUM_LC_utf8((U8*)locinput)) + { + sayNO; + } + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (OP(scan) == NALNUMUTF8 + ? isALNUM(nextchr) : isALNUM_LC(nextchr)) + sayNO; + nextchr = UCHARAT(++locinput); break; case BOUNDL: case NBOUNDL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case BOUND: case NBOUND: /* was last char in word? */ - ln = (locinput != regbol) ? UCHARAT(locinput - 1) : regprev; + ln = (locinput != PL_regbol) ? UCHARAT(locinput - 1) : PL_regprev; if (OP(scan) == BOUND || OP(scan) == NBOUND) { ln = isALNUM(ln); - n = isALNUM(nextchar); + n = isALNUM(nextchr); } else { ln = isALNUM_LC(ln); - n = isALNUM_LC(nextchar); + n = isALNUM_LC(nextchr); } if (((!ln) == (!n)) == (OP(scan) == BOUND || OP(scan) == BOUNDL)) sayNO; break; + case BOUNDLUTF8: + case NBOUNDLUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case BOUNDUTF8: + case NBOUNDUTF8: + /* was last char in word? */ + ln = (locinput != PL_regbol) + ? utf8_to_uv(reghop((U8*)locinput, -1), 0) : PL_regprev; + if (OP(scan) == BOUNDUTF8 || OP(scan) == NBOUNDUTF8) { + ln = isALNUM_uni(ln); + n = swash_fetch(PL_utf8_alnum, (U8*)locinput); + } + else { + ln = isALNUM_LC_uni(ln); + n = isALNUM_LC_utf8((U8*)locinput); + } + if (((!ln) == (!n)) == (OP(scan) == BOUNDUTF8 || OP(scan) == BOUNDLUTF8)) + sayNO; + break; case SPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case SPACE: - if (!nextchar && locinput >= regeol) + if (!nextchr && locinput >= PL_regeol) sayNO; if (!(OP(scan) == SPACE - ? isSPACE(nextchar) : isSPACE_LC(nextchar))) + ? isSPACE(nextchr) : isSPACE_LC(nextchr))) + sayNO; + nextchr = UCHARAT(++locinput); + break; + case SPACELUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case SPACEUTF8: + if (!nextchr && locinput >= PL_regeol) sayNO; - nextchar = UCHARAT(++locinput); + if (nextchr & 0x80) { + if (!(OP(scan) == SPACEUTF8 + ? swash_fetch(PL_utf8_space,(U8*)locinput) + : isSPACE_LC_utf8((U8*)locinput))) + { + sayNO; + } + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (!(OP(scan) == SPACEUTF8 + ? isSPACE(nextchr) : isSPACE_LC(nextchr))) + sayNO; + nextchr = UCHARAT(++locinput); break; case NSPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case NSPACE: - if (!nextchar) + if (!nextchr) sayNO; if (OP(scan) == SPACE - ? isSPACE(nextchar) : isSPACE_LC(nextchar)) + ? isSPACE(nextchr) : isSPACE_LC(nextchr)) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); + break; + case NSPACELUTF8: + PL_reg_flags |= RF_tainted; + /* FALL THROUGH */ + case NSPACEUTF8: + if (!nextchr) + sayNO; + if (nextchr & 0x80) { + if (OP(scan) == NSPACEUTF8 + ? swash_fetch(PL_utf8_space,(U8*)locinput) + : isSPACE_LC_utf8((U8*)locinput)) + { + sayNO; + } + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (OP(scan) == NSPACEUTF8 + ? isSPACE(nextchr) : isSPACE_LC(nextchr)) + sayNO; + nextchr = UCHARAT(++locinput); break; case DIGIT: - if (!isDIGIT(nextchar)) + if (!isDIGIT(nextchr)) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); + break; + case DIGITUTF8: + if (nextchr & 0x80) { + if (!(swash_fetch(PL_utf8_digit,(U8*)locinput))) + sayNO; + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (!isDIGIT(nextchr)) + sayNO; + nextchr = UCHARAT(++locinput); break; case NDIGIT: - if (!nextchar && locinput >= regeol) + if (!nextchr && locinput >= PL_regeol) sayNO; - if (isDIGIT(nextchar)) + if (isDIGIT(nextchr)) sayNO; - nextchar = UCHARAT(++locinput); + nextchr = UCHARAT(++locinput); + break; + case NDIGITUTF8: + if (!nextchr && locinput >= PL_regeol) + sayNO; + if (nextchr & 0x80) { + if (swash_fetch(PL_utf8_digit,(U8*)locinput)) + sayNO; + locinput += PL_utf8skip[nextchr]; + nextchr = UCHARAT(locinput); + break; + } + if (isDIGIT(nextchr)) + sayNO; + nextchr = UCHARAT(++locinput); + break; + case CLUMP: + if (locinput >= PL_regeol || swash_fetch(PL_utf8_mark,(U8*)locinput)) + sayNO; + locinput += PL_utf8skip[nextchr]; + while (locinput < PL_regeol && swash_fetch(PL_utf8_mark,(U8*)locinput)) + locinput += UTF8SKIP(locinput); + if (locinput > PL_regeol) + sayNO; + nextchr = UCHARAT(locinput); break; case REFFL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; /* FALL THROUGH */ case REF: case REFF: n = ARG(scan); /* which paren pair */ - s = regstartp[n]; - if (*reglastparen < n || !s) + s = PL_regstartp[n]; + if (*PL_reglastparen < n || !s) sayNO; /* Do not match unless seen CLOSEn. */ - if (s == regendp[n]) + if (s == PL_regendp[n]) + break; + + if (UTF && OP(scan) != REF) { /* REF can do byte comparison */ + char *l = locinput; + char *e = PL_regendp[n]; + /* + * Note that we can't do the "other character" lookup trick as + * in the 8-bit case (no pun intended) because in Unicode we + * have to map both upper and title case to lower case. + */ + if (OP(scan) == REFF) { + while (s < e) { + if (l >= PL_regeol) + sayNO; + if (toLOWER_utf8((U8*)s) != toLOWER_utf8((U8*)l)) + sayNO; + s += UTF8SKIP(s); + l += UTF8SKIP(l); + } + } + else { + while (s < e) { + if (l >= PL_regeol) + sayNO; + if (toLOWER_LC_utf8((U8*)s) != toLOWER_LC_utf8((U8*)l)) + sayNO; + s += UTF8SKIP(s); + l += UTF8SKIP(l); + } + } + locinput = l; + nextchr = UCHARAT(locinput); break; + } + /* Inline the first character, for speed. */ - if (UCHARAT(s) != nextchar && + if (UCHARAT(s) != nextchr && (OP(scan) == REF || (UCHARAT(s) != ((OP(scan) == REFF - ? fold : fold_locale)[nextchar])))) + ? PL_fold : PL_fold_locale)[nextchr])))) sayNO; - ln = regendp[n] - s; - if (locinput + ln > regeol) + ln = PL_regendp[n] - s; + if (locinput + ln > PL_regeol) sayNO; if (ln > 1 && (OP(scan) == REF ? memNE(s, locinput, ln) @@ -998,7 +1571,7 @@ regmatch(regnode *prog) : ibcmp_locale(s, locinput, ln)))) sayNO; locinput += ln; - nextchar = UCHARAT(locinput); + nextchr = UCHARAT(locinput); break; case NOTHING: @@ -1009,62 +1582,125 @@ regmatch(regnode *prog) case EVAL: { dSP; - OP_4tree *oop = op; - COP *ocurcop = curcop; - SV **ocurpad = curpad; + OP_4tree *oop = PL_op; + COP *ocurcop = PL_curcop; + SV **ocurpad = PL_curpad; SV *ret; n = ARG(scan); - op = (OP_4tree*)data->data[n]; - DEBUG_r( PerlIO_printf(Perl_debug_log, " re_eval 0x%x\n", op) ); - curpad = AvARRAY((AV*)data->data[n + 1]); - if (!reg_eval_set) { - /* Preserve whatever is on stack now, otherwise - OP_NEXTSTATE will overwrite it. */ - SAVEINT(reg_eval_set); /* Protect against unwinding. */ - reg_eval_set = 1; - DEBUG_r(DEBUG_s( - PerlIO_printf(Perl_debug_log, " setting stack tmpbase at %i\n", stack_sp - stack_base); - )); - SAVEINT(cxstack[cxstack_ix].blk_oldsp); - cxstack[cxstack_ix].blk_oldsp = stack_sp - stack_base; - /* Otherwise OP_NEXTSTATE will free whatever on stack now. */ - SAVETMPS; - /* Apparently this is not needed, judging by wantarray. */ - /* SAVEINT(cxstack[cxstack_ix].blk_gimme); - cxstack[cxstack_ix].blk_gimme = G_SCALAR; */ - } - - runops(); /* Scalar context. */ + PL_op = (OP_4tree*)PL_regdata->data[n]; + DEBUG_r( PerlIO_printf(Perl_debug_log, " re_eval 0x%x\n", PL_op) ); + PL_curpad = AvARRAY((AV*)PL_regdata->data[n + 1]); + + CALLRUNOPS(); /* Scalar context. */ SPAGAIN; ret = POPs; PUTBACK; + PL_op = oop; + PL_curpad = ocurpad; + PL_curcop = ocurcop; if (logical) { - logical = 0; + if (logical == 2) { /* Postponed subexpression. */ + regexp *re; + MAGIC *mg = Null(MAGIC*); + re_cc_state state; + CURCUR cctmp; + CHECKPOINT cp, lastcp; + + if(SvROK(ret) || SvRMAGICAL(ret)) { + SV *sv = SvROK(ret) ? SvRV(ret) : ret; + + if(SvMAGICAL(sv)) + mg = mg_find(sv, 'r'); + } + if (mg) { + re = (regexp *)mg->mg_obj; + (void)ReREFCNT_inc(re); + } + else { + STRLEN len; + char *t = SvPV(ret, len); + PMOP pm; + char *oprecomp = PL_regprecomp; + I32 osize = PL_regsize; + I32 onpar = PL_regnpar; + + pm.op_pmflags = 0; + re = CALLREGCOMP(t, t + len, &pm); + if (!(SvFLAGS(ret) + & (SVs_TEMP | SVs_PADTMP | SVf_READONLY))) + sv_magic(ret,(SV*)ReREFCNT_inc(re),'r',0,0); + PL_regprecomp = oprecomp; + PL_regsize = osize; + PL_regnpar = onpar; + } + DEBUG_r( + PerlIO_printf(Perl_debug_log, + "Entering embedded `%s%.60s%s%s'\n", + PL_colors[0], + re->precomp, + PL_colors[1], + (strlen(re->precomp) > 60 ? "..." : "")) + ); + state.node = next; + state.prev = PL_reg_call_cc; + state.cc = PL_regcc; + state.re = PL_reg_re; + + cctmp.cur = 0; + cctmp.oldcc = 0; + PL_regcc = &cctmp; + + cp = regcppush(0); /* Save *all* the positions. */ + REGCP_SET; + cache_re(re); + state.ss = PL_savestack_ix; + *PL_reglastparen = 0; + PL_reg_call_cc = &state; + PL_reginput = locinput; + if (regmatch(re->program + 1)) { + ReREFCNT_dec(re); + regcpblow(cp); + sayYES; + } + DEBUG_r( + PerlIO_printf(Perl_debug_log, + "%*s failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") + ); + ReREFCNT_dec(re); + REGCP_UNWIND; + regcppop(); + PL_reg_call_cc = state.prev; + PL_regcc = state.cc; + PL_reg_re = state.re; + cache_re(PL_reg_re); + sayNO; + } sw = SvTRUE(ret); + logical = 0; } - op = oop; - curpad = ocurpad; - curcop = ocurcop; + else + sv_setsv(save_scalar(PL_replgv), ret); break; } case OPEN: n = ARG(scan); /* which paren pair */ - reg_start_tmp[n] = locinput; - if (n > regsize) - regsize = n; + PL_reg_start_tmp[n] = locinput; + if (n > PL_regsize) + PL_regsize = n; break; case CLOSE: n = ARG(scan); /* which paren pair */ - regstartp[n] = reg_start_tmp[n]; - regendp[n] = locinput; - if (n > *reglastparen) - *reglastparen = n; + PL_regstartp[n] = PL_reg_start_tmp[n]; + PL_regendp[n] = locinput; + if (n > *PL_reglastparen) + *PL_reglastparen = n; break; case GROUPP: n = ARG(scan); /* which paren pair */ - sw = (*reglastparen >= n && regendp[n] != NULL); + sw = (*PL_reglastparen >= n && PL_regendp[n] != NULL); break; case IFTHEN: if (sw) @@ -1076,17 +1712,17 @@ regmatch(regnode *prog) } break; case LOGICAL: - logical = 1; + logical = scan->flags; break; case CURLYX: { CURCUR cc; - CHECKPOINT cp = savestack_ix; + CHECKPOINT cp = PL_savestack_ix; if (OP(PREVOPER(next)) == NOTHING) /* LONGJMP */ next += ARG(next); - cc.oldcc = regcc; - regcc = &cc; - cc.parenfloor = *reglastparen; + cc.oldcc = PL_regcc; + PL_regcc = &cc; + cc.parenfloor = *PL_reglastparen; cc.cur = -1; cc.min = ARG1(scan); cc.max = ARG2(scan); @@ -1094,10 +1730,10 @@ regmatch(regnode *prog) cc.next = next; cc.minmod = minmod; cc.lastloc = 0; - reginput = locinput; + PL_reginput = locinput; n = regmatch(PREVOPER(next)); /* start on the WHILEM */ regcpblow(cp); - regcc = cc.oldcc; + PL_regcc = cc.oldcc; saySAME(n); } /* NOT REACHED */ @@ -1112,16 +1748,16 @@ regmatch(regnode *prog) */ CHECKPOINT cp, lastcp; - CURCUR* cc = regcc; + CURCUR* cc = PL_regcc; char *lastloc = cc->lastloc; /* Detection of 0-len. */ n = cc->cur + 1; /* how many we know we matched */ - reginput = locinput; + PL_reginput = locinput; DEBUG_r( PerlIO_printf(Perl_debug_log, "%*s %ld out of %ld..%ld cc=%lx\n", - REPORT_CODE_OFF+regindent*2, "", + REPORT_CODE_OFF+PL_regindent*2, "", (long)n, (long)cc->min, (long)cc->max, (long)cc) ); @@ -1129,18 +1765,22 @@ regmatch(regnode *prog) /* If degenerate scan matches "", assume scan done. */ if (locinput == cc->lastloc && n >= cc->min) { - regcc = cc->oldcc; - ln = regcc->cur; + PL_regcc = cc->oldcc; + ln = PL_regcc->cur; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s empty match detected, try continuation...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s empty match detected, try continuation...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); if (regmatch(cc->next)) sayYES; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s failed...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); - regcc->cur = ln; - regcc = cc; + PL_regcc->cur = ln; + PL_regcc = cc; sayNO; } @@ -1154,7 +1794,9 @@ regmatch(regnode *prog) cc->cur = n - 1; cc->lastloc = lastloc; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s failed...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); sayNO; } @@ -1162,8 +1804,8 @@ regmatch(regnode *prog) /* Prefer next over scan for minimal matching. */ if (cc->minmod) { - regcc = cc->oldcc; - ln = regcc->cur; + PL_regcc = cc->oldcc; + ln = PL_regcc->cur; cp = regcppush(cc->parenfloor); REGCP_SET; if (regmatch(cc->next)) { @@ -1172,23 +1814,27 @@ regmatch(regnode *prog) } REGCP_UNWIND; regcppop(); - regcc->cur = ln; - regcc = cc; + PL_regcc->cur = ln; + PL_regcc = cc; if (n >= cc->max) { /* Maximum greed exceeded? */ - if (dowarn && n >= REG_INFTY - && !(reg_flags & RF_warned)) { - reg_flags |= RF_warned; - warn("count exceeded %d", REG_INFTY - 1); + if (ckWARN(WARN_UNSAFE) && n >= REG_INFTY + && !(PL_reg_flags & RF_warned)) { + PL_reg_flags |= RF_warned; + warner(WARN_UNSAFE, "%s limit (%d) exceeded", + "Complex regular subexpression recursion", + REG_INFTY - 1); } sayNO; } DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s trying longer...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s trying longer...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); /* Try scanning more and see if it helps. */ - reginput = locinput; + PL_reginput = locinput; cc->cur = n; cc->lastloc = locinput; cp = regcppush(cc->parenfloor); @@ -1198,7 +1844,9 @@ regmatch(regnode *prog) sayYES; } DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s failed...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); REGCP_UNWIND; regcppop(); @@ -1220,26 +1868,32 @@ regmatch(regnode *prog) } REGCP_UNWIND; regcppop(); /* Restore some previous $s? */ - reginput = locinput; + PL_reginput = locinput; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s failed, try continuation...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, + "%*s failed, try continuation...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); } - if (dowarn && n >= REG_INFTY && !(reg_flags & RF_warned)) { - reg_flags |= RF_warned; - warn("count exceeded %d", REG_INFTY - 1); + if (ckWARN(WARN_UNSAFE) && n >= REG_INFTY + && !(PL_reg_flags & RF_warned)) { + PL_reg_flags |= RF_warned; + warner(WARN_UNSAFE, "%s limit (%d) exceeded", + "Complex regular subexpression recursion", + REG_INFTY - 1); } /* Failed deeper matches of scan, so see if this one works. */ - regcc = cc->oldcc; - ln = regcc->cur; + PL_regcc = cc->oldcc; + ln = PL_regcc->cur; if (regmatch(cc->next)) sayYES; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s failed...\n", REPORT_CODE_OFF+regindent*2, "") + PerlIO_printf(Perl_debug_log, "%*s failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") ); - regcc->cur = ln; - regcc = cc; + PL_regcc->cur = ln; + PL_regcc = cc; cc->cur = n - 1; cc->lastloc = lastloc; sayNO; @@ -1260,27 +1914,23 @@ regmatch(regnode *prog) if (OP(next) != c1) /* No choice. */ next = inner; /* Avoid recursion. */ else { - int lastparen = *reglastparen; + int lastparen = *PL_reglastparen; REGCP_SET; do { - reginput = locinput; + PL_reginput = locinput; if (regmatch(inner)) sayYES; REGCP_UNWIND; - for (n = *reglastparen; n > lastparen; n--) - regendp[n] = 0; - *reglastparen = n; + for (n = *PL_reglastparen; n > lastparen; n--) + PL_regendp[n] = 0; + *PL_reglastparen = n; scan = next; -#ifdef REGALIGN /*SUPPRESS 560*/ if (n = (c1 == BRANCH ? NEXT_OFF(next) : ARG(next))) next += n; else next = NULL; -#else - next = regnext(next); -#endif inner = NEXTOPER(scan); if (c1 == BRANCHJ) { inner = NEXTOPER(inner); @@ -1296,7 +1946,7 @@ regmatch(regnode *prog) break; case CURLYM: { - I32 l; + I32 l = 0; CHECKPOINT lastcp; /* We suppose that the next guy does not need @@ -1304,68 +1954,70 @@ regmatch(regnode *prog) and has no parenths to influence future backrefs. */ ln = ARG1(scan); /* min to match */ n = ARG2(scan); /* max to match */ -#ifdef REGALIGN_STRUCT paren = scan->flags; if (paren) { - if (paren > regsize) - regsize = paren; - if (paren > *reglastparen) - *reglastparen = paren; + if (paren > PL_regsize) + PL_regsize = paren; + if (paren > *PL_reglastparen) + *PL_reglastparen = paren; } -#endif scan = NEXTOPER(scan) + NODE_STEP_REGNODE; if (paren) scan += NEXT_OFF(scan); /* Skip former OPEN. */ - reginput = locinput; + PL_reginput = locinput; if (minmod) { minmod = 0; if (ln && regrepeat_hard(scan, ln, &l) < ln) sayNO; - if (l == 0 && n >= ln + if (ln && l == 0 && n >= ln /* In fact, this is tricky. If paren, then the fact that we did/didnot match may influence future execution. */ && !(paren && ln == 0)) ln = n; - locinput = reginput; - if (regkind[(U8)OP(next)] == EXACT) { + locinput = PL_reginput; + if (PL_regkind[(U8)OP(next)] == EXACT) { c1 = UCHARAT(OPERAND(next) + 1); if (OP(next) == EXACTF) - c2 = fold[c1]; + c2 = PL_fold[c1]; else if (OP(next) == EXACTFL) - c2 = fold_locale[c1]; + c2 = PL_fold_locale[c1]; else c2 = c1; - } else + } + else c1 = c2 = -1000; REGCP_SET; + /* This may be improved if l == 0. */ while (n >= ln || (n == REG_INFTY && ln > 0 && l)) { /* ln overflow ? */ /* If it could work, try it. */ if (c1 == -1000 || - UCHARAT(reginput) == c1 || - UCHARAT(reginput) == c2) + UCHARAT(PL_reginput) == c1 || + UCHARAT(PL_reginput) == c2) { if (paren) { if (n) { - regstartp[paren] = reginput - l; - regendp[paren] = reginput; - } else - regendp[paren] = NULL; + PL_regstartp[paren] = HOPc(PL_reginput, -l); + PL_regendp[paren] = PL_reginput; + } + else + PL_regendp[paren] = NULL; } if (regmatch(next)) sayYES; REGCP_UNWIND; } /* Couldn't or didn't -- move forward. */ - reginput = locinput; + PL_reginput = locinput; if (regrepeat_hard(scan, 1, &l)) { ln++; - locinput = reginput; + locinput = PL_reginput; } else sayNO; } - } else { + } + else { n = regrepeat_hard(scan, n, &l); if (n != 0 && l == 0 /* In fact, this is tricky. If paren, then the @@ -1373,47 +2025,53 @@ regmatch(regnode *prog) future execution. */ && !(paren && ln == 0)) ln = n; - locinput = reginput; + locinput = PL_reginput; DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s matched %ld times, len=%ld...\n", REPORT_CODE_OFF+regindent*2, "", n, l) + PerlIO_printf(Perl_debug_log, + "%*s matched %ld times, len=%ld...\n", + REPORT_CODE_OFF+PL_regindent*2, "", n, l) ); if (n >= ln) { - if (regkind[(U8)OP(next)] == EXACT) { + if (PL_regkind[(U8)OP(next)] == EXACT) { c1 = UCHARAT(OPERAND(next) + 1); if (OP(next) == EXACTF) - c2 = fold[c1]; + c2 = PL_fold[c1]; else if (OP(next) == EXACTFL) - c2 = fold_locale[c1]; + c2 = PL_fold_locale[c1]; else c2 = c1; - } else + } + else c1 = c2 = -1000; } REGCP_SET; while (n >= ln) { /* If it could work, try it. */ if (c1 == -1000 || - UCHARAT(reginput) == c1 || - UCHARAT(reginput) == c2) - { - DEBUG_r( - PerlIO_printf(Perl_debug_log, "%*s trying tail with n=%ld...\n", REPORT_CODE_OFF+regindent*2, "", n) - ); - if (paren) { - if (n) { - regstartp[paren] = reginput - l; - regendp[paren] = reginput; - } else - regendp[paren] = NULL; + UCHARAT(PL_reginput) == c1 || + UCHARAT(PL_reginput) == c2) + { + DEBUG_r( + PerlIO_printf(Perl_debug_log, + "%*s trying tail with n=%ld...\n", + REPORT_CODE_OFF+PL_regindent*2, "", n) + ); + if (paren) { + if (n) { + PL_regstartp[paren] = HOPc(PL_reginput, -l); + PL_regendp[paren] = PL_reginput; } - if (regmatch(next)) - sayYES; - REGCP_UNWIND; + else + PL_regendp[paren] = NULL; } + if (regmatch(next)) + sayYES; + REGCP_UNWIND; + } /* Couldn't or didn't -- back up. */ n--; - locinput -= l; - reginput = locinput; + locinput = HOPc(locinput, -l); + PL_reginput = locinput; } } sayNO; @@ -1421,10 +2079,10 @@ regmatch(regnode *prog) } case CURLYN: paren = scan->flags; /* Which paren to set */ - if (paren > regsize) - regsize = paren; - if (paren > *reglastparen) - *reglastparen = paren; + if (paren > PL_regsize) + PL_regsize = paren; + if (paren > *PL_reglastparen) + *PL_reglastparen = paren; ln = ARG1(scan); /* min to match */ n = ARG2(scan); /* max to match */ scan = regnext(NEXTOPER(scan) + NODE_STEP_REGNODE); @@ -1451,70 +2109,75 @@ regmatch(regnode *prog) * Lookahead to avoid useless match attempts * when we know what character comes next. */ - if (regkind[(U8)OP(next)] == EXACT) { + if (PL_regkind[(U8)OP(next)] == EXACT) { c1 = UCHARAT(OPERAND(next) + 1); if (OP(next) == EXACTF) - c2 = fold[c1]; + c2 = PL_fold[c1]; else if (OP(next) == EXACTFL) - c2 = fold_locale[c1]; + c2 = PL_fold_locale[c1]; else c2 = c1; } else c1 = c2 = -1000; - reginput = locinput; + PL_reginput = locinput; if (minmod) { CHECKPOINT lastcp; minmod = 0; if (ln && regrepeat(scan, ln) < ln) sayNO; + locinput = PL_reginput; REGCP_SET; while (n >= ln || (n == REG_INFTY && ln > 0)) { /* ln overflow ? */ /* If it could work, try it. */ if (c1 == -1000 || - UCHARAT(reginput) == c1 || - UCHARAT(reginput) == c2) + UCHARAT(PL_reginput) == c1 || + UCHARAT(PL_reginput) == c2) { if (paren) { if (n) { - regstartp[paren] = reginput - 1; - regendp[paren] = reginput; - } else - regendp[paren] = NULL; + PL_regstartp[paren] = HOPc(PL_reginput, -1); + PL_regendp[paren] = PL_reginput; + } + else + PL_regendp[paren] = NULL; } if (regmatch(next)) sayYES; REGCP_UNWIND; } /* Couldn't or didn't -- move forward. */ - reginput = locinput + ln; + PL_reginput = locinput; if (regrepeat(scan, 1)) { ln++; - reginput = locinput + ln; - } else + locinput = PL_reginput; + } + else sayNO; } } else { CHECKPOINT lastcp; n = regrepeat(scan, n); - if (ln < n && regkind[(U8)OP(next)] == EOL && - (!multiline || OP(next) == SEOL)) + locinput = PL_reginput; + if (ln < n && PL_regkind[(U8)OP(next)] == EOL && + (!PL_multiline || OP(next) == SEOL)) ln = n; /* why back off? */ REGCP_SET; if (paren) { while (n >= ln) { /* If it could work, try it. */ if (c1 == -1000 || - UCHARAT(reginput) == c1 || - UCHARAT(reginput) == c2) + UCHARAT(PL_reginput) == c1 || + UCHARAT(PL_reginput) == c2) { if (paren && n) { if (n) { - regstartp[paren] = reginput - 1; - regendp[paren] = reginput; - } else - regendp[paren] = NULL; + PL_regstartp[paren] = HOPc(PL_reginput, -1); + PL_regendp[paren] = PL_reginput; + } + else + PL_regendp[paren] = NULL; } if (regmatch(next)) sayYES; @@ -1522,14 +2185,15 @@ regmatch(regnode *prog) } /* Couldn't or didn't -- back up. */ n--; - reginput = locinput + n; + PL_reginput = locinput = HOPc(locinput, -1); } - } else { + } + else { while (n >= ln) { /* If it could work, try it. */ if (c1 == -1000 || - UCHARAT(reginput) == c1 || - UCHARAT(reginput) == c2) + UCHARAT(PL_reginput) == c1 || + UCHARAT(PL_reginput) == c2) { if (regmatch(next)) sayYES; @@ -1537,30 +2201,80 @@ regmatch(regnode *prog) } /* Couldn't or didn't -- back up. */ n--; - reginput = locinput + n; + PL_reginput = locinput = HOPc(locinput, -1); } } } sayNO; break; - case SUCCEED: case END: - reginput = locinput; /* put where regtry can find it */ + if (PL_reg_call_cc) { + re_cc_state *cur_call_cc = PL_reg_call_cc; + CURCUR *cctmp = PL_regcc; + regexp *re = PL_reg_re; + CHECKPOINT cp, lastcp; + + cp = regcppush(0); /* Save *all* the positions. */ + REGCP_SET; + regcp_set_to(PL_reg_call_cc->ss); /* Restore parens of + the caller. */ + PL_reginput = locinput; /* Make position available to + the callcc. */ + cache_re(PL_reg_call_cc->re); + PL_regcc = PL_reg_call_cc->cc; + PL_reg_call_cc = PL_reg_call_cc->prev; + if (regmatch(cur_call_cc->node)) { + PL_reg_call_cc = cur_call_cc; + regcpblow(cp); + sayYES; + } + REGCP_UNWIND; + regcppop(); + PL_reg_call_cc = cur_call_cc; + PL_regcc = cctmp; + PL_reg_re = re; + cache_re(re); + + DEBUG_r( + PerlIO_printf(Perl_debug_log, + "%*s continuation failed...\n", + REPORT_CODE_OFF+PL_regindent*2, "") + ); + sayNO; + } + if (locinput < PL_regtill) + sayNO; /* Cannot match: too short. */ + /* Fall through */ + case SUCCEED: + PL_reginput = locinput; /* put where regtry can find it */ sayYES; /* Success! */ case SUSPEND: n = 1; + PL_reginput = locinput; goto do_ifmatch; case UNLESSM: n = 0; - if (locinput < bostr + scan->flags) - goto say_yes; + if (scan->flags) { + s = HOPMAYBEc(locinput, -scan->flags); + if (!s) + goto say_yes; + PL_reginput = s; + } + else + PL_reginput = locinput; goto do_ifmatch; case IFMATCH: n = 1; - if (locinput < bostr + scan->flags) - goto say_no; + if (scan->flags) { + s = HOPMAYBEc(locinput, -scan->flags); + if (!s || s < PL_bostr) + goto say_no; + PL_reginput = s; + } + else + PL_reginput = locinput; + do_ifmatch: - reginput = locinput - scan->flags; inner = NEXTOPER(NEXTOPER(scan)); if (regmatch(inner) != n) { say_no: @@ -1568,7 +2282,8 @@ regmatch(regnode *prog) logical = 0; sw = 0; goto do_longjump; - } else + } + else sayNO; } say_yes: @@ -1577,8 +2292,8 @@ regmatch(regnode *prog) sw = 1; } if (OP(scan) == SUSPEND) { - locinput = reginput; - nextchar = UCHARAT(locinput); + locinput = PL_reginput; + nextchr = UCHARAT(locinput); } /* FALL THROUGH. */ case LONGJMP: @@ -1605,13 +2320,13 @@ regmatch(regnode *prog) yes: #ifdef DEBUGGING - regindent--; + PL_regindent--; #endif return 1; no: #ifdef DEBUGGING - regindent--; + PL_regindent--; #endif return 0; } @@ -1622,28 +2337,44 @@ no: /* * [This routine now assumes that it will only match on things of length 1. * That was true before, but now we assume scan - reginput is the count, - * rather than incrementing count on every character.] + * rather than incrementing count on every character. [Er, except utf8.]] */ -static I32 +STATIC I32 regrepeat(regnode *p, I32 max) { + dTHR; register char *scan; register char *opnd; register I32 c; - register char *loceol = regeol; + register char *loceol = PL_regeol; + register I32 hardcount = 0; - scan = reginput; + scan = PL_reginput; if (max != REG_INFTY && max < loceol - scan) loceol = scan + max; opnd = (char *) OPERAND(p); switch (OP(p)) { - case ANY: + case REG_ANY: while (scan < loceol && *scan != '\n') scan++; break; case SANY: scan = loceol; break; + case ANYUTF8: + loceol = PL_regeol; + while (scan < loceol && *scan != '\n') { + scan += UTF8SKIP(scan); + hardcount++; + } + break; + case SANYUTF8: + loceol = PL_regeol; + while (scan < loceol) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case EXACT: /* length of string is 1 */ c = UCHARAT(++opnd); while (scan < loceol && UCHARAT(scan) == c) @@ -1652,70 +2383,156 @@ regrepeat(regnode *p, I32 max) case EXACTF: /* length of string is 1 */ c = UCHARAT(++opnd); while (scan < loceol && - (UCHARAT(scan) == c || UCHARAT(scan) == fold[c])) + (UCHARAT(scan) == c || UCHARAT(scan) == PL_fold[c])) scan++; break; case EXACTFL: /* length of string is 1 */ - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; c = UCHARAT(++opnd); while (scan < loceol && - (UCHARAT(scan) == c || UCHARAT(scan) == fold_locale[c])) + (UCHARAT(scan) == c || UCHARAT(scan) == PL_fold_locale[c])) scan++; break; + case ANYOFUTF8: + loceol = PL_regeol; + while (scan < loceol && REGINCLASSUTF8(p, (U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case ANYOF: - while (scan < loceol && reginclass(opnd, *scan)) + while (scan < loceol && REGINCLASS(opnd, *scan)) scan++; break; case ALNUM: while (scan < loceol && isALNUM(*scan)) scan++; break; + case ALNUMUTF8: + loceol = PL_regeol; + while (scan < loceol && swash_fetch(PL_utf8_alnum, (U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case ALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (scan < loceol && isALNUM_LC(*scan)) scan++; break; + case ALNUMLUTF8: + PL_reg_flags |= RF_tainted; + loceol = PL_regeol; + while (scan < loceol && isALNUM_LC_utf8((U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; + break; case NALNUM: while (scan < loceol && !isALNUM(*scan)) scan++; break; + case NALNUMUTF8: + loceol = PL_regeol; + while (scan < loceol && !swash_fetch(PL_utf8_alnum, (U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case NALNUML: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (scan < loceol && !isALNUM_LC(*scan)) scan++; break; + case NALNUMLUTF8: + PL_reg_flags |= RF_tainted; + loceol = PL_regeol; + while (scan < loceol && !isALNUM_LC_utf8((U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case SPACE: while (scan < loceol && isSPACE(*scan)) scan++; break; + case SPACEUTF8: + loceol = PL_regeol; + while (scan < loceol && (*scan == ' ' || swash_fetch(PL_utf8_space,(U8*)scan))) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case SPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (scan < loceol && isSPACE_LC(*scan)) scan++; break; + case SPACELUTF8: + PL_reg_flags |= RF_tainted; + loceol = PL_regeol; + while (scan < loceol && (*scan == ' ' || isSPACE_LC_utf8((U8*)scan))) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case NSPACE: while (scan < loceol && !isSPACE(*scan)) scan++; break; + case NSPACEUTF8: + loceol = PL_regeol; + while (scan < loceol && !(*scan == ' ' || swash_fetch(PL_utf8_space,(U8*)scan))) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case NSPACEL: - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; while (scan < loceol && !isSPACE_LC(*scan)) scan++; break; + case NSPACELUTF8: + PL_reg_flags |= RF_tainted; + loceol = PL_regeol; + while (scan < loceol && !(*scan == ' ' || isSPACE_LC_utf8((U8*)scan))) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; case DIGIT: while (scan < loceol && isDIGIT(*scan)) scan++; break; + case DIGITUTF8: + loceol = PL_regeol; + while (scan < loceol && swash_fetch(PL_utf8_digit,(U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; + break; case NDIGIT: while (scan < loceol && !isDIGIT(*scan)) scan++; break; + case NDIGITUTF8: + loceol = PL_regeol; + while (scan < loceol && !swash_fetch(PL_utf8_digit,(U8*)scan)) { + scan += UTF8SKIP(scan); + hardcount++; + } + break; default: /* Called on something of 0 width. */ break; /* So match right here or not at all. */ } - c = scan - reginput; - reginput = scan; + if (hardcount) + c = hardcount; + else + c = scan - PL_reginput; + PL_reginput = scan; DEBUG_r( { @@ -1736,60 +2553,81 @@ regrepeat(regnode *p, I32 max) * The repeater is supposed to have constant length. */ -static I32 +STATIC I32 regrepeat_hard(regnode *p, I32 max, I32 *lp) { + dTHR; register char *scan; register char *start; - register char *loceol = regeol; - I32 l = -1; - - start = reginput; - while (reginput < loceol && (scan = reginput, regmatch(p))) { - if (l == -1) { - *lp = l = reginput - start; - if (max != REG_INFTY && l*max < loceol - scan) - loceol = scan + l*max; - if (l == 0) { - return max; + register char *loceol = PL_regeol; + I32 l = 0; + I32 count = 0, res = 1; + + if (!max) + return 0; + + start = PL_reginput; + if (UTF) { + while (PL_reginput < loceol && (scan = PL_reginput, res = regmatch(p))) { + if (!count++) { + l = 0; + while (start < PL_reginput) { + l++; + start += UTF8SKIP(start); + } + *lp = l; + if (l == 0) + return max; } + if (count == max) + return count; } } - if (reginput < loceol) - reginput = scan; - else - scan = reginput; + else { + while (PL_reginput < loceol && (scan = PL_reginput, res = regmatch(p))) { + if (!count++) { + *lp = l = PL_reginput - start; + if (max != REG_INFTY && l*max < loceol - scan) + loceol = scan + l*max; + if (l == 0) + return max; + } + } + } + if (!res) + PL_reginput = scan; - return (scan - start)/l; + return count; } /* - regclass - determine if a character falls into a character class */ -static bool +STATIC bool reginclass(register char *p, register I32 c) { + dTHR; char flags = *p; bool match = FALSE; c &= 0xFF; - if (p[1 + (c >> 3)] & (1 << (c & 7))) + if (ANYOF_TEST(p, c)) match = TRUE; else if (flags & ANYOF_FOLD) { I32 cf; if (flags & ANYOF_LOCALE) { - reg_flags |= RF_tainted; - cf = fold_locale[c]; + PL_reg_flags |= RF_tainted; + cf = PL_fold_locale[c]; } else - cf = fold[c]; - if (p[1 + (cf >> 3)] & (1 << (cf & 7))) + cf = PL_fold[c]; + if (ANYOF_TEST(p, cf)) match = TRUE; } if (!match && (flags & ANYOF_ISA)) { - reg_flags |= RF_tainted; + PL_reg_flags |= RF_tainted; if (((flags & ANYOF_ALNUML) && isALNUM_LC(c)) || ((flags & ANYOF_NALNUML) && !isALNUM_LC(c)) || @@ -1800,8 +2638,93 @@ reginclass(register char *p, register I32 c) } } - return match ^ ((flags & ANYOF_INVERT) != 0); + return (flags & ANYOF_INVERT) ? !match : match; } +STATIC bool +reginclassutf8(regnode *f, U8 *p) +{ + dTHR; + char flags = ARG1(f); + bool match = FALSE; + SV *sv = (SV*)PL_regdata->data[ARG2(f)]; + if (swash_fetch(sv, p)) + match = TRUE; + else if (flags & ANYOF_FOLD) { + I32 cf; + U8 tmpbuf[10]; + if (flags & ANYOF_LOCALE) { + PL_reg_flags |= RF_tainted; + uv_to_utf8(tmpbuf, toLOWER_LC_utf8(p)); + } + else + uv_to_utf8(tmpbuf, toLOWER_utf8(p)); + if (swash_fetch(sv, tmpbuf)) + match = TRUE; + } + if (!match && (flags & ANYOF_ISA)) { + PL_reg_flags |= RF_tainted; + + if (((flags & ANYOF_ALNUML) && isALNUM_LC_utf8(p)) || + ((flags & ANYOF_NALNUML) && !isALNUM_LC_utf8(p)) || + ((flags & ANYOF_SPACEL) && isSPACE_LC_utf8(p)) || + ((flags & ANYOF_NSPACEL) && !isSPACE_LC_utf8(p))) + { + match = TRUE; + } + } + + return (flags & ANYOF_INVERT) ? !match : match; +} + +STATIC U8 * +reghop(U8 *s, I32 off) +{ + dTHR; + if (off >= 0) { + while (off-- && s < (U8*)PL_regeol) + s += UTF8SKIP(s); + } + else { + while (off++) { + if (s > (U8*)PL_bostr) { + s--; + if (*s & 0x80) { + while (s > (U8*)PL_bostr && (*s & 0xc0) == 0x80) + s--; + } /* XXX could check well-formedness here */ + } + } + } + return s; +} + +STATIC U8 * +reghopmaybe(U8* s, I32 off) +{ + dTHR; + if (off >= 0) { + while (off-- && s < (U8*)PL_regeol) + s += UTF8SKIP(s); + if (off >= 0) + return 0; + } + else { + while (off++) { + if (s > (U8*)PL_bostr) { + s--; + if (*s & 0x80) { + while (s > (U8*)PL_bostr && (*s & 0xc0) == 0x80) + s--; + } /* XXX could check well-formedness here */ + } + else + break; + } + if (off <= 0) + return 0; + } + return s; +}