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-rw-r--r--regexec.c82
1 files changed, 37 insertions, 45 deletions
diff --git a/regexec.c b/regexec.c
index a65ded7b3c..7ca466737c 100644
--- a/regexec.c
+++ b/regexec.c
@@ -285,18 +285,6 @@ S_regcppop(pTHX)
return input;
}
-STATIC char *
-S_regcp_set_to(pTHX_ I32 ss)
-{
- dVAR;
- const I32 tmp = PL_savestack_ix;
-
- PL_savestack_ix = ss;
- regcppop();
- PL_savestack_ix = tmp;
- return Nullch;
-}
-
typedef struct re_cc_state
{
I32 ss;
@@ -1193,8 +1181,7 @@ S_find_byclass(pTHX_ regexp * prog, regnode *c, char *s, const char *strend, I32
if (s == PL_bostr)
tmp = '\n';
else {
- U8 *r = reghop3((U8*)s, -1, (U8*)PL_bostr);
-
+ U8 * const r = reghop3((U8*)s, -1, (U8*)PL_bostr);
tmp = utf8n_to_uvchr(r, UTF8SKIP(r), 0, 0);
}
tmp = ((OP(c) == BOUND ?
@@ -1236,8 +1223,7 @@ S_find_byclass(pTHX_ regexp * prog, regnode *c, char *s, const char *strend, I32
if (s == PL_bostr)
tmp = '\n';
else {
- U8 *r = reghop3((U8*)s, -1, (U8*)PL_bostr);
-
+ U8 * const r = reghop3((U8*)s, -1, (U8*)PL_bostr);
tmp = utf8n_to_uvchr(r, UTF8SKIP(r), 0, 0);
}
tmp = ((OP(c) == NBOUND ?
@@ -1651,8 +1637,8 @@ Perl_regexec_flags(pTHX_ register regexp *prog, char *stringarg, register char *
const bool do_utf8 = DO_UTF8(sv);
const I32 multiline = prog->reganch & PMf_MULTILINE;
#ifdef DEBUGGING
- SV *dsv0 = PERL_DEBUG_PAD_ZERO(0);
- SV *dsv1 = PERL_DEBUG_PAD_ZERO(1);
+ SV * const dsv0 = PERL_DEBUG_PAD_ZERO(0);
+ SV * const dsv1 = PERL_DEBUG_PAD_ZERO(1);
#endif
GET_RE_DEBUG_FLAGS_DECL;
@@ -2417,9 +2403,9 @@ S_regmatch(pTHX_ regnode *prog)
#endif
register const bool do_utf8 = PL_reg_match_utf8;
#ifdef DEBUGGING
- SV *dsv0 = PERL_DEBUG_PAD_ZERO(0);
- SV *dsv1 = PERL_DEBUG_PAD_ZERO(1);
- SV *dsv2 = PERL_DEBUG_PAD_ZERO(2);
+ SV * const dsv0 = PERL_DEBUG_PAD_ZERO(0);
+ SV * const dsv1 = PERL_DEBUG_PAD_ZERO(1);
+ SV * const dsv2 = PERL_DEBUG_PAD_ZERO(2);
SV *re_debug_flags = NULL;
#endif
@@ -2438,7 +2424,7 @@ S_regmatch(pTHX_ regnode *prog)
while (scan != NULL) {
DEBUG_EXECUTE_r( {
- SV *prop = sv_newmortal();
+ SV * const prop = sv_newmortal();
const int docolor = *PL_colors[0];
const int taill = (docolor ? 10 : 7); /* 3 chars for "> <" */
int l = (PL_regeol - locinput) > taill ? taill : (PL_regeol - locinput);
@@ -2762,7 +2748,7 @@ S_regmatch(pTHX_ regnode *prog)
best = cur;
}
DEBUG_EXECUTE_r({
- SV **tmp = av_fetch( trie->words, accept_buff[ best ].wordnum - 1, 0 );
+ SV ** const tmp = av_fetch( trie->words, accept_buff[ best ].wordnum - 1, 0 );
PerlIO_printf( Perl_debug_log, "%*s %strying alternation #%d <%s> at 0x%p%s\n",
REPORT_CODE_OFF+PL_regindent*2, "", PL_colors[4],
accept_buff[best].wordnum,
@@ -3204,11 +3190,11 @@ S_regmatch(pTHX_ regnode *prog)
case EVAL:
{
dSP;
- OP_4tree *oop = PL_op;
- COP *ocurcop = PL_curcop;
+ OP_4tree * const oop = PL_op;
+ COP * const ocurcop = PL_curcop;
PAD *old_comppad;
SV *ret;
- struct regexp *oreg = PL_reg_re;
+ struct regexp * const oreg = PL_reg_re;
n = ARG(scan);
PL_op = (OP_4tree*)PL_regdata->data[n];
@@ -3217,7 +3203,7 @@ S_regmatch(pTHX_ regnode *prog)
PL_regendp[0] = PL_reg_magic->mg_len = locinput - PL_bostr;
{
- SV **before = SP;
+ SV ** const before = SP;
CALLRUNOPS(aTHX); /* Scalar context. */
SPAGAIN;
if (SP == before)
@@ -3234,7 +3220,7 @@ S_regmatch(pTHX_ regnode *prog)
if (logical) {
if (logical == 2) { /* Postponed subexpression. */
regexp *re;
- MAGIC *mg = Null(MAGIC*);
+ MAGIC *mg = NULL;
re_cc_state state;
CHECKPOINT cp, lastcp;
int toggleutf;
@@ -3255,7 +3241,7 @@ S_regmatch(pTHX_ regnode *prog)
}
else {
STRLEN len;
- const char *t = SvPV_const(ret, len);
+ const char * const t = SvPV_const(ret, len);
PMOP pm;
char * const oprecomp = PL_regprecomp;
const I32 osize = PL_regsize;
@@ -3494,7 +3480,7 @@ S_regmatch(pTHX_ regnode *prog)
CHECKPOINT cp, lastcp;
CURCUR* cc = PL_regcc;
- char *lastloc = cc->lastloc; /* Detection of 0-len. */
+ char * const lastloc = cc->lastloc; /* Detection of 0-len. */
I32 cache_offset = 0, cache_bit = 0;
n = cc->cur + 1; /* how many we know we matched */
@@ -3698,12 +3684,10 @@ S_regmatch(pTHX_ regnode *prog)
next = inner; /* Avoid recursion. */
else {
const I32 lastparen = *PL_reglastparen;
- I32 unwind1;
- re_unwind_branch_t *uw;
-
/* Put unwinding data on stack */
- unwind1 = SSNEWt(1,re_unwind_branch_t);
- uw = SSPTRt(unwind1,re_unwind_branch_t);
+ const I32 unwind1 = SSNEWt(1,re_unwind_branch_t);
+ re_unwind_branch_t * const uw = SSPTRt(unwind1,re_unwind_branch_t);
+
uw->prev = unwind;
unwind = unwind1;
uw->type = ((c1 == BRANCH)
@@ -4152,14 +4136,22 @@ S_regmatch(pTHX_ regnode *prog)
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. */
+ CHECKPOINT lastcp;
+ I32 tmp;
+
+ /* Save *all* the positions. */
+ const CHECKPOINT cp = regcppush(0);
REGCP_SET(lastcp);
- regcp_set_to(PL_reg_call_cc->ss); /* Restore parens of
- the caller. */
- PL_reginput = locinput; /* Make position available to
- the callcc. */
+
+ /* Restore parens of the caller. */
+ tmp = PL_savestack_ix;
+ PL_savestack_ix = PL_reg_call_cc->ss;
+ regcppop();
+ PL_savestack_ix = tmp;
+
+ /* Make position available to the callcc. */
+ PL_reginput = locinput;
+
cache_re(PL_reg_call_cc->re);
PL_regcc = PL_reg_call_cc->cc;
PL_reg_call_cc = PL_reg_call_cc->prev;
@@ -4298,13 +4290,13 @@ no:
no_final:
do_no:
if (unwind) {
- re_unwind_t *uw = SSPTRt(unwind,re_unwind_t);
+ re_unwind_t * const uw = SSPTRt(unwind,re_unwind_t);
switch (uw->type) {
case RE_UNWIND_BRANCH:
case RE_UNWIND_BRANCHJ:
{
- re_unwind_branch_t *uwb = &(uw->branch);
+ re_unwind_branch_t * const uwb = &(uw->branch);
const I32 lastparen = uwb->lastparen;
REGCP_UNWIND(uwb->lastcp);
@@ -4586,7 +4578,7 @@ S_regrepeat(pTHX_ const regnode *p, I32 max)
DEBUG_r({
SV *re_debug_flags = NULL;
- SV *prop = sv_newmortal();
+ SV * const prop = sv_newmortal();
GET_RE_DEBUG_FLAGS;
DEBUG_EXECUTE_r({
regprop(prop, p);
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