assert(nextchr >= 0);
switch (state_num) {
- case BOL:
+ case BOL: /* /^../ */
if (locinput == PL_bostr)
{
/* reginfo->till = reginfo->bol; */
break;
}
sayNO;
- case MBOL:
+
+ case MBOL: /* /^../m */
if (locinput == PL_bostr ||
((nextchr || locinput < PL_regeol) && locinput[-1] == '\n'))
{
break;
}
sayNO;
- case SBOL:
+
+ case SBOL: /* /^../s */
if (locinput == PL_bostr)
break;
sayNO;
- case GPOS:
+
+ case GPOS: /* \G */
if (locinput == reginfo->ganch)
break;
sayNO;
- case KEEPS:
+ case KEEPS: /* \K */
/* update the startpoint */
st->u.keeper.val = rex->offs[0].start;
rex->offs[0].start = locinput - PL_bostr;
rex->offs[0].start = st->u.keeper.val;
sayNO_SILENT;
/*NOT-REACHED*/
- case EOL:
+
+ case EOL: /* /..$/ */
goto seol;
- case MEOL:
+
+ case MEOL: /* /..$/m */
if ((nextchr || locinput < PL_regeol) && nextchr != '\n')
sayNO;
break;
- case SEOL:
+
+ case SEOL: /* /..$/s */
seol:
if ((nextchr || locinput < PL_regeol) && nextchr != '\n')
sayNO;
if (PL_regeol - locinput > 1)
sayNO;
break;
- case EOS:
+
+ case EOS: /* \z */
if (PL_regeol != locinput)
sayNO;
break;
- case SANY:
+
+ case SANY: /* /./s */
if (!nextchr && locinput >= PL_regeol)
sayNO;
goto increment_locinput;
- case CANY:
+
+ case CANY: /* \C */
if (!nextchr && locinput >= PL_regeol)
sayNO;
locinput++;
break;
- case REG_ANY:
+
+ case REG_ANY: /* /./ */
if ((!nextchr && locinput >= PL_regeol) || nextchr == '\n')
sayNO;
goto increment_locinput;
#undef ST
#define ST st->u.trie
- case TRIEC:
+ case TRIEC: /* (ab|cd) with known charclass */
/* In this case the charclass data is available inline so
we can fail fast without a lot of extra overhead.
*/
assert(0); /* NOTREACHED */
}
/* FALL THROUGH */
- case TRIE:
+ case TRIE: /* (ab|cd) */
/* the basic plan of execution of the trie is:
* At the beginning, run though all the states, and
* find the longest-matching word. Also remember the position
}
#undef ST
- case EXACT: {
+ case EXACT: { /* /abc/ */
char *s = STRING(scan);
ln = STR_LEN(scan);
if (utf8_target != UTF_PATTERN) {
locinput += ln;
break;
}
- case EXACTFL: {
+ case EXACTFL: { /* /abc/il */
re_fold_t folder;
const U8 * fold_array;
const char * s;
fold_utf8_flags = FOLDEQ_UTF8_LOCALE;
goto do_exactf;
- case EXACTFU_SS:
- case EXACTFU_TRICKYFOLD:
- case EXACTFU:
+ case EXACTFU_SS: /* /\x{df}/iu */
+ case EXACTFU_TRICKYFOLD: /* /\x{390}/iu */
+ case EXACTFU: /* /abc/iu */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
fold_utf8_flags = (UTF_PATTERN) ? FOLDEQ_S1_ALREADY_FOLDED : 0;
goto do_exactf;
- case EXACTFA:
+ case EXACTFA: /* /abc/iaa */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
fold_utf8_flags = FOLDEQ_UTF8_NOMIX_ASCII;
goto do_exactf;
- case EXACTF:
+ case EXACTF: /* /abc/i */
folder = foldEQ;
fold_array = PL_fold;
fold_utf8_flags = 0;
/* XXX Could improve efficiency by separating these all out using a
* macro or in-line function. At that point regcomp.c would no longer
* have to set the FLAGS fields of these */
- case BOUNDL:
- case NBOUNDL:
+ case BOUNDL: /* /\b/l */
+ case NBOUNDL: /* /\B/l */
PL_reg_flags |= RF_tainted;
/* FALL THROUGH */
- case BOUND:
- case BOUNDU:
- case BOUNDA:
- case NBOUND:
- case NBOUNDU:
- case NBOUNDA:
+ case BOUND: /* /\b/ */
+ case BOUNDU: /* /\b/u */
+ case BOUNDA: /* /\b/a */
+ case NBOUND: /* /\B/ */
+ case NBOUNDU: /* /\B/u */
+ case NBOUNDA: /* /\B/a */
/* was last char in word? */
if (utf8_target
&& FLAGS(scan) != REGEX_ASCII_RESTRICTED_CHARSET
if (((!ln) == (!n)) == (OP(scan) < NBOUND))
sayNO;
break;
- case ANYOFV:
- case ANYOF:
+
+ case ANYOFV: /* /[abx{df}]/i */
+ case ANYOF: /* /[abc]/ */
if (utf8_target || state_num == ANYOFV) {
STRLEN inclasslen = PL_regeol - locinput;
if (locinput >= PL_regeol)
break;
}
break;
- /* Special char classes - The defines start on line 129 or so */
+
+ /* Special char classes: \d, \w etc.
+ * The defines start on line 166 or so */
CCC_TRY_U(ALNUM, NALNUM, isWORDCHAR,
ALNUML, NALNUML, isALNUM_LC, isALNUM_LC_utf8,
ALNUMU, NALNUMU, isWORDCHAR_L1,
DIGITA, NDIGITA, isDIGIT_A,
digit, "0");
- case POSIXA:
+ case POSIXA: /* /[[:ascii:]]/ etc */
if (locinput >= PL_regeol || ! _generic_isCC_A(nextchr, FLAGS(scan))) {
sayNO;
}
/* Matched a utf8-invariant, so don't have to worry about utf8 */
locinput++;
break;
- case NPOSIXA:
+
+ case NPOSIXA: /* /[^[:ascii:]]/ etc */
if (locinput >= PL_regeol || _generic_isCC_A(nextchr, FLAGS(scan))) {
sayNO;
}
}
break;
- case NREFFL:
+ case NREFFL: /* /\g{name}/il */
{ /* The capture buffer cases. The ones beginning with N for the
named buffers just convert to the equivalent numbered and
pretend they were called as the corresponding numbered buffer
utf8_fold_flags = FOLDEQ_UTF8_LOCALE;
goto do_nref;
- case NREFFA:
+ case NREFFA: /* /\g{name}/iaa */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
type = REFFA;
utf8_fold_flags = FOLDEQ_UTF8_NOMIX_ASCII;
goto do_nref;
- case NREFFU:
+ case NREFFU: /* /\g{name}/iu */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
type = REFFU;
utf8_fold_flags = 0;
goto do_nref;
- case NREFF:
+ case NREFF: /* /\g{name}/i */
folder = foldEQ;
fold_array = PL_fold;
type = REFF;
utf8_fold_flags = 0;
goto do_nref;
- case NREF:
+ case NREF: /* /\g{name}/ */
type = REF;
folder = NULL;
fold_array = NULL;
}
goto do_nref_ref_common;
- case REFFL:
+ case REFFL: /* /\1/il */
PL_reg_flags |= RF_tainted;
folder = foldEQ_locale;
fold_array = PL_fold_locale;
utf8_fold_flags = FOLDEQ_UTF8_LOCALE;
goto do_ref;
- case REFFA:
+ case REFFA: /* /\1/iaa */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
utf8_fold_flags = FOLDEQ_UTF8_NOMIX_ASCII;
goto do_ref;
- case REFFU:
+ case REFFU: /* /\1/iu */
folder = foldEQ_latin1;
fold_array = PL_fold_latin1;
utf8_fold_flags = 0;
goto do_ref;
- case REFF:
+ case REFF: /* /\1/i */
folder = foldEQ;
fold_array = PL_fold;
utf8_fold_flags = 0;
goto do_ref;
- case REF:
+ case REF: /* /\1/ */
folder = NULL;
fold_array = NULL;
utf8_fold_flags = 0;
locinput += ln;
break;
}
- case NOTHING:
- case TAIL:
+
+ case NOTHING: /* null op; e.g. the 'nothing' following
+ * the '*' in m{(a+|b)*}' */
+ break;
+ case TAIL: /* placeholder while compiling (A|B|C) */
break;
- case BACK:
+
+ case BACK: /* ??? doesn't appear to be used ??? */
break;
#undef ST
regexp_internal *rei;
regnode *startpoint;
- case GOSTART:
+ case GOSTART: /* (?R) */
case GOSUB: /* /(...(?1))/ /(...(?&foo))/ */
if (cur_eval && cur_eval->locinput==locinput) {
if (cur_eval->u.eval.close_paren == (U32)ARG(scan))
}
goto eval_recurse_doit;
assert(0); /* NOTREACHED */
+
case EVAL: /* /(?{A})B/ /(??{A})B/ and /(?(?{A})X|Y)B/ */
if (cur_eval && cur_eval->locinput==locinput) {
if ( ++nochange_depth > max_nochange_depth )
sayNO_SILENT;
#undef ST
- case OPEN:
+ case OPEN: /* ( */
n = ARG(scan); /* which paren pair */
rex->offs[n].start_tmp = locinput - PL_bostr;
if (n > PL_regsize)
(IV)rex->offs[n].end \
))
- case CLOSE:
+ case CLOSE: /* ) */
n = ARG(scan); /* which paren pair */
CLOSE_CAPTURE;
/*if (n > PL_regsize)
goto fake_end;
}
break;
- case ACCEPT:
+
+ case ACCEPT: /* (*ACCEPT) */
if (ARG(scan)){
regnode *cursor;
for (cursor=scan;
}
goto fake_end;
/*NOTREACHED*/
- case GROUPP:
+
+ case GROUPP: /* (?(1)) */
n = ARG(scan); /* which paren pair */
sw = cBOOL(rex->lastparen >= n && rex->offs[n].end != -1);
break;
- case NGROUPP:
+
+ case NGROUPP: /* (?(<name>)) */
/* reg_check_named_buff_matched returns 0 for no match */
sw = cBOOL(0 < reg_check_named_buff_matched(rex,scan));
break;
- case INSUBP:
+
+ case INSUBP: /* (?(R)) */
n = ARG(scan);
sw = (cur_eval && (!n || cur_eval->u.eval.close_paren == n));
break;
- case DEFINEP:
+
+ case DEFINEP: /* (?(DEFINE)) */
sw = 0;
break;
- case IFTHEN:
+
+ case IFTHEN: /* (?(cond)A|B) */
PL_reg_leftiter = PL_reg_maxiter; /* Void cache */
if (sw)
next = NEXTOPER(NEXTOPER(scan));
next = NEXTOPER(NEXTOPER(next));
}
break;
- case LOGICAL:
+
+ case LOGICAL: /* modifier for EVAL and IFMATCH */
logical = scan->flags;
break;
PUSH_STATE_GOTO(BRANCH_next, scan, locinput);
}
assert(0); /* NOTREACHED */
- case CUTGROUP:
+
+ case CUTGROUP: /* /(*THEN)/ */
sv_yes_mark = st->u.mark.mark_name = scan->flags ? NULL :
MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
PUSH_STATE_GOTO(CUTGROUP_next, next, locinput);
assert(0); /* NOTREACHED */
+
case CUTGROUP_next_fail:
do_cutgroup = 1;
no_final = 1;
sv_commit = st->u.mark.mark_name;
sayNO;
assert(0); /* NOTREACHED */
+
case BRANCH_next:
sayYES;
assert(0); /* NOTREACHED */
+
case BRANCH_next_fail: /* that branch failed; try the next, if any */
if (do_cutgroup) {
do_cutgroup = 0;
continue; /* execute next BRANCH[J] op */
assert(0); /* NOTREACHED */
- case MINMOD:
+ case MINMOD: /* next op will be non-greedy, e.g. A*? */
minmod = 1;
break;
ST.max = REG_INFTY;
scan = NEXTOPER(scan);
goto repeat;
+
case PLUS: /* /A+B/ where A is width 1 */
ST.paren = 0;
ST.min = 1;
ST.max = REG_INFTY;
scan = NEXTOPER(scan);
goto repeat;
+
case CURLYN: /* /(A){m,n}B/ where A is width 1 */
ST.paren = scan->flags; /* Which paren to set */
ST.lastparen = rex->lastparen;
}
scan = regnext(NEXTOPER(scan) + NODE_STEP_REGNODE);
goto repeat;
+
case CURLY: /* /A{m,n}B/ where A is width 1 */
ST.paren = 0;
ST.min = ARG1(scan); /* min to match */
}
}
/* FALL THROUGH */
+
case CURLY_B_max_fail:
/* failed to find B in a greedy match */
#undef ST
- case END:
+ case END: /* last op of main pattern */
fake_end:
if (cur_eval) {
/* we've just finished A in /(??{A})B/; now continue with B */
#undef ST
- case LONGJMP:
+ case LONGJMP: /* alternative with many branches compiles to
+ * (BRANCHJ; EXACT ...; LONGJMP ) x N */
next = scan + ARG(scan);
if (next == scan)
next = NULL;
break;
- case COMMIT:
+
+ case COMMIT: /* (*COMMIT) */
reginfo->cutpoint = PL_regeol;
/* FALLTHROUGH */
- case PRUNE:
+
+ case PRUNE: /* (*PRUNE) */
if (!scan->flags)
sv_yes_mark = sv_commit = MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
PUSH_STATE_GOTO(COMMIT_next, next, locinput);
assert(0); /* NOTREACHED */
+
case COMMIT_next_fail:
no_final = 1;
/* FALLTHROUGH */
- case OPFAIL:
+
+ case OPFAIL: /* (*FAIL) */
sayNO;
assert(0); /* NOTREACHED */
#define ST st->u.mark
- case MARKPOINT:
+ case MARKPOINT: /* (*MARK:foo) */
ST.prev_mark = mark_state;
ST.mark_name = sv_commit = sv_yes_mark
= MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
ST.mark_loc = locinput;
PUSH_YES_STATE_GOTO(MARKPOINT_next, next, locinput);
assert(0); /* NOTREACHED */
+
case MARKPOINT_next:
mark_state = ST.prev_mark;
sayYES;
assert(0); /* NOTREACHED */
+
case MARKPOINT_next_fail:
if (popmark && sv_eq(ST.mark_name,popmark))
{
mark_state->u.mark.mark_name : NULL;
sayNO;
assert(0); /* NOTREACHED */
- case SKIP:
+
+ case SKIP: /* (*SKIP) */
if (scan->flags) {
/* (*SKIP) : if we fail we cut here*/
ST.mark_name = NULL;
}
/* Didn't find our (*MARK:NAME) so ignore this (*SKIP:NAME) */
break;
+
case SKIP_next_fail:
if (ST.mark_name) {
/* (*CUT:NAME) - Set up to search for the name as we
sayNO;
assert(0); /* NOTREACHED */
#undef ST
- case LNBREAK:
+
+ case LNBREAK: /* \R */
if ((n=is_LNBREAK(locinput,utf8_target))) {
locinput += n;
} else
} \
break
- CASE_CLASS(VERTWS);
- CASE_CLASS(HORIZWS);
+ CASE_CLASS(VERTWS); /* \v \V */
+ CASE_CLASS(HORIZWS); /* \h \H */
#undef CASE_CLASS
default:
projects / platform / upstream / perl.git / commitdiff