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dump.c
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/* dump.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
* 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* 'You have talked long in your sleep, Frodo,' said Gandalf gently, 'and
* it has not been hard for me to read your mind and memory.'
*
* [p.220 of _The Lord of the Rings_, II/i: "Many Meetings"]
*/
/* This file contains utility routines to dump the contents of SV and OP
* structures, as used by command-line options like -Dt and -Dx, and
* by Devel::Peek.
*
* It also holds the debugging version of the runops function.
=head1 Display and Dump functions
*/
#include "EXTERN.h"
#define PERL_IN_DUMP_C
#include "perl.h"
#include "regcomp.h"
static const char* const svtypenames[SVt_LAST] = {
"NULL",
"IV",
"NV",
"PV",
"INVLIST",
"PVIV",
"PVNV",
"PVMG",
"REGEXP",
"PVGV",
"PVLV",
"PVAV",
"PVHV",
"PVCV",
"PVFM",
"PVIO"
};
static const char* const svshorttypenames[SVt_LAST] = {
"UNDEF",
"IV",
"NV",
"PV",
"INVLST",
"PVIV",
"PVNV",
"PVMG",
"REGEXP",
"GV",
"PVLV",
"AV",
"HV",
"CV",
"FM",
"IO"
};
struct flag_to_name {
U32 flag;
const char *name;
};
static void
S_append_flags(pTHX_ SV *sv, U32 flags, const struct flag_to_name *start,
const struct flag_to_name *const end)
{
do {
if (flags & start->flag)
sv_catpv(sv, start->name);
} while (++start < end);
}
#define append_flags(sv, f, flags) \
S_append_flags(aTHX_ (sv), (f), (flags), C_ARRAY_END(flags))
#define generic_pv_escape(sv,s,len,utf8) pv_escape( (sv), (s), (len), \
(len) * (4+UTF8_MAXBYTES) + 1, NULL, \
PERL_PV_ESCAPE_NONASCII | PERL_PV_ESCAPE_DWIM \
| ((utf8) ? PERL_PV_ESCAPE_UNI : 0) )
/*
=for apidoc pv_escape
Escapes at most the first C<count> chars of C<pv> and puts the results into
C<dsv> such that the size of the escaped string will not exceed C<max> chars
and will not contain any incomplete escape sequences. The number of bytes
escaped will be returned in the C<STRLEN *escaped> parameter if it is not null.
When the C<dsv> parameter is null no escaping actually occurs, but the number
of bytes that would be escaped were it not null will be calculated.
If flags contains C<PERL_PV_ESCAPE_QUOTE> then any double quotes in the string
will also be escaped.
Normally the SV will be cleared before the escaped string is prepared,
but when C<PERL_PV_ESCAPE_NOCLEAR> is set this will not occur.
If C<PERL_PV_ESCAPE_UNI> is set then the input string is treated as UTF-8
if C<PERL_PV_ESCAPE_UNI_DETECT> is set then the input string is scanned
using C<is_utf8_string()> to determine if it is UTF-8.
If C<PERL_PV_ESCAPE_ALL> is set then all input chars will be output
using C<\x01F1> style escapes, otherwise if C<PERL_PV_ESCAPE_NONASCII> is set, only
non-ASCII chars will be escaped using this style; otherwise, only chars above
255 will be so escaped; other non printable chars will use octal or
common escaped patterns like C<\n>.
Otherwise, if C<PERL_PV_ESCAPE_NOBACKSLASH>
then all chars below 255 will be treated as printable and
will be output as literals.
If C<PERL_PV_ESCAPE_FIRSTCHAR> is set then only the first char of the
string will be escaped, regardless of max. If the output is to be in hex,
then it will be returned as a plain hex
sequence. Thus the output will either be a single char,
an octal escape sequence, a special escape like C<\n> or a hex value.
If C<PERL_PV_ESCAPE_RE> is set then the escape char used will be a C<"%"> and
not a C<"\\">. This is because regexes very often contain backslashed
sequences, whereas C<"%"> is not a particularly common character in patterns.
Returns a pointer to the escaped text as held by C<dsv>.
=cut
*/
#define PV_ESCAPE_OCTBUFSIZE 32
char *
Perl_pv_escape( pTHX_ SV *dsv, char const * const str,
const STRLEN count, const STRLEN max,
STRLEN * const escaped, const U32 flags )
{
const char esc = (flags & PERL_PV_ESCAPE_RE) ? '%' : '\\';
const char dq = (flags & PERL_PV_ESCAPE_QUOTE) ? '"' : esc;
char octbuf[PV_ESCAPE_OCTBUFSIZE] = "%123456789ABCDF";
STRLEN wrote = 0; /* chars written so far */
STRLEN chsize = 0; /* size of data to be written */
STRLEN readsize = 1; /* size of data just read */
bool isuni= flags & PERL_PV_ESCAPE_UNI ? 1 : 0; /* is this UTF-8 */
const char *pv = str;
const char * const end = pv + count; /* end of string */
octbuf[0] = esc;
PERL_ARGS_ASSERT_PV_ESCAPE;
if (dsv && !(flags & PERL_PV_ESCAPE_NOCLEAR)) {
/* This won't alter the UTF-8 flag */
sv_setpvs(dsv, "");
}
if ((flags & PERL_PV_ESCAPE_UNI_DETECT) && is_utf8_string((U8*)pv, count))
isuni = 1;
for ( ; (pv < end && (!max || (wrote < max))) ; pv += readsize ) {
const UV u= (isuni) ? utf8_to_uvchr_buf((U8*)pv, (U8*) end, &readsize) : (U8)*pv;
const U8 c = (U8)u & 0xFF;
if ( ( u > 255 )
|| (flags & PERL_PV_ESCAPE_ALL)
|| (( ! isASCII(u) ) && (flags & (PERL_PV_ESCAPE_NONASCII|PERL_PV_ESCAPE_DWIM))))
{
if (flags & PERL_PV_ESCAPE_FIRSTCHAR)
chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
"%"UVxf, u);
else
chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
((flags & PERL_PV_ESCAPE_DWIM) && !isuni)
? "%cx%02"UVxf
: "%cx{%02"UVxf"}", esc, u);
} else if (flags & PERL_PV_ESCAPE_NOBACKSLASH) {
chsize = 1;
} else {
if ( (c == dq) || (c == esc) || !isPRINT(c) ) {
chsize = 2;
switch (c) {
case '\\' : /* FALLTHROUGH */
case '%' : if ( c == esc ) {
octbuf[1] = esc;
} else {
chsize = 1;
}
break;
case '\v' : octbuf[1] = 'v'; break;
case '\t' : octbuf[1] = 't'; break;
case '\r' : octbuf[1] = 'r'; break;
case '\n' : octbuf[1] = 'n'; break;
case '\f' : octbuf[1] = 'f'; break;
case '"' :
if ( dq == '"' )
octbuf[1] = '"';
else
chsize = 1;
break;
default:
if ( (flags & PERL_PV_ESCAPE_DWIM) && c != '\0' ) {
chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
isuni ? "%cx{%02"UVxf"}" : "%cx%02"UVxf,
esc, u);
}
else if ( (pv+readsize < end) && isDIGIT((U8)*(pv+readsize)) )
chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
"%c%03o", esc, c);
else
chsize = my_snprintf( octbuf, PV_ESCAPE_OCTBUFSIZE,
"%c%o", esc, c);
}
} else {
chsize = 1;
}
}
if ( max && (wrote + chsize > max) ) {
break;
} else if (chsize > 1) {
if (dsv)
sv_catpvn(dsv, octbuf, chsize);
wrote += chsize;
} else {
/* If PERL_PV_ESCAPE_NOBACKSLASH is set then non-ASCII bytes
can be appended raw to the dsv. If dsv happens to be
UTF-8 then we need catpvf to upgrade them for us.
Or add a new API call sv_catpvc(). Think about that name, and
how to keep it clear that it's unlike the s of catpvs, which is
really an array of octets, not a string. */
if (dsv)
Perl_sv_catpvf( aTHX_ dsv, "%c", c);
wrote++;
}
if ( flags & PERL_PV_ESCAPE_FIRSTCHAR )
break;
}
if (escaped != NULL)
*escaped= pv - str;
return dsv ? SvPVX(dsv) : NULL;
}
/*
=for apidoc pv_pretty
Converts a string into something presentable, handling escaping via
C<pv_escape()> and supporting quoting and ellipses.
If the C<PERL_PV_PRETTY_QUOTE> flag is set then the result will be
double quoted with any double quotes in the string escaped. Otherwise
if the C<PERL_PV_PRETTY_LTGT> flag is set then the result be wrapped in
angle brackets.
If the C<PERL_PV_PRETTY_ELLIPSES> flag is set and not all characters in
string were output then an ellipsis C<...> will be appended to the
string. Note that this happens AFTER it has been quoted.
If C<start_color> is non-null then it will be inserted after the opening
quote (if there is one) but before the escaped text. If C<end_color>
is non-null then it will be inserted after the escaped text but before
any quotes or ellipses.
Returns a pointer to the prettified text as held by C<dsv>.
=cut
*/
char *
Perl_pv_pretty( pTHX_ SV *dsv, char const * const str, const STRLEN count,
const STRLEN max, char const * const start_color, char const * const end_color,
const U32 flags )
{
const U8 *quotes = (U8*)((flags & PERL_PV_PRETTY_QUOTE) ? "\"\"" :
(flags & PERL_PV_PRETTY_LTGT) ? "<>" : NULL);
STRLEN escaped;
STRLEN max_adjust= 0;
STRLEN orig_cur;
PERL_ARGS_ASSERT_PV_PRETTY;
if (!(flags & PERL_PV_PRETTY_NOCLEAR)) {
/* This won't alter the UTF-8 flag */
sv_setpvs(dsv, "");
}
orig_cur= SvCUR(dsv);
if ( quotes )
Perl_sv_catpvf(aTHX_ dsv, "%c", quotes[0]);
if ( start_color != NULL )
sv_catpv(dsv, start_color);
if ((flags & PERL_PV_PRETTY_EXACTSIZE)) {
if (quotes)
max_adjust += 2;
assert(max > max_adjust);
pv_escape( NULL, str, count, max - max_adjust, &escaped, flags );
if ( (flags & PERL_PV_PRETTY_ELLIPSES) && ( escaped < count ) )
max_adjust += 3;
assert(max > max_adjust);
}
pv_escape( dsv, str, count, max - max_adjust, &escaped, flags | PERL_PV_ESCAPE_NOCLEAR );
if ( end_color != NULL )
sv_catpv(dsv, end_color);
if ( quotes )
Perl_sv_catpvf(aTHX_ dsv, "%c", quotes[1]);
if ( (flags & PERL_PV_PRETTY_ELLIPSES) && ( escaped < count ) )
sv_catpvs(dsv, "...");
if ((flags & PERL_PV_PRETTY_EXACTSIZE)) {
while( SvCUR(dsv) - orig_cur < max )
sv_catpvs(dsv," ");
}
return SvPVX(dsv);
}
/*
=for apidoc pv_display
Similar to
pv_escape(dsv,pv,cur,pvlim,PERL_PV_ESCAPE_QUOTE);
except that an additional "\0" will be appended to the string when
len > cur and pv[cur] is "\0".
Note that the final string may be up to 7 chars longer than pvlim.
=cut
*/
char *
Perl_pv_display(pTHX_ SV *dsv, const char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
{
PERL_ARGS_ASSERT_PV_DISPLAY;
pv_pretty( dsv, pv, cur, pvlim, NULL, NULL, PERL_PV_PRETTY_DUMP);
if (len > cur && pv[cur] == '\0')
sv_catpvs( dsv, "\\0");
return SvPVX(dsv);
}
char *
Perl_sv_peek(pTHX_ SV *sv)
{
dVAR;
SV * const t = sv_newmortal();
int unref = 0;
U32 type;
sv_setpvs(t, "");
retry:
if (!sv) {
sv_catpv(t, "VOID");
goto finish;
}
else if (sv == (const SV *)0x55555555 || ((char)SvTYPE(sv)) == 'U') {
/* detect data corruption under memory poisoning */
sv_catpv(t, "WILD");
goto finish;
}
else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes || sv == &PL_sv_placeholder) {
if (sv == &PL_sv_undef) {
sv_catpv(t, "SV_UNDEF");
if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
SvREADONLY(sv))
goto finish;
}
else if (sv == &PL_sv_no) {
sv_catpv(t, "SV_NO");
if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
SVp_POK|SVp_NOK)) &&
SvCUR(sv) == 0 &&
SvNVX(sv) == 0.0)
goto finish;
}
else if (sv == &PL_sv_yes) {
sv_catpv(t, "SV_YES");
if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
SVp_POK|SVp_NOK)) &&
SvCUR(sv) == 1 &&
SvPVX_const(sv) && *SvPVX_const(sv) == '1' &&
SvNVX(sv) == 1.0)
goto finish;
}
else {
sv_catpv(t, "SV_PLACEHOLDER");
if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
SvREADONLY(sv))
goto finish;
}
sv_catpv(t, ":");
}
else if (SvREFCNT(sv) == 0) {
sv_catpv(t, "(");
unref++;
}
else if (DEBUG_R_TEST_) {
int is_tmp = 0;
SSize_t ix;
/* is this SV on the tmps stack? */
for (ix=PL_tmps_ix; ix>=0; ix--) {
if (PL_tmps_stack[ix] == sv) {
is_tmp = 1;
break;
}
}
if (SvREFCNT(sv) > 1)
Perl_sv_catpvf(aTHX_ t, "<%"UVuf"%s>", (UV)SvREFCNT(sv),
is_tmp ? "T" : "");
else if (is_tmp)
sv_catpv(t, "<T>");
}
if (SvROK(sv)) {
sv_catpv(t, "\\");
if (SvCUR(t) + unref > 10) {
SvCUR_set(t, unref + 3);
*SvEND(t) = '\0';
sv_catpv(t, "...");
goto finish;
}
sv = SvRV(sv);
goto retry;
}
type = SvTYPE(sv);
if (type == SVt_PVCV) {
SV * const tmp = newSVpvs_flags("", SVs_TEMP);
GV* gvcv = CvGV(sv);
Perl_sv_catpvf(aTHX_ t, "CV(%s)", gvcv
? generic_pv_escape( tmp, GvNAME(gvcv), GvNAMELEN(gvcv), GvNAMEUTF8(gvcv))
: "");
goto finish;
} else if (type < SVt_LAST) {
sv_catpv(t, svshorttypenames[type]);
if (type == SVt_NULL)
goto finish;
} else {
sv_catpv(t, "FREED");
goto finish;
}
if (SvPOKp(sv)) {
if (!SvPVX_const(sv))
sv_catpv(t, "(null)");
else {
SV * const tmp = newSVpvs("");
sv_catpv(t, "(");
if (SvOOK(sv)) {
STRLEN delta;
SvOOK_offset(sv, delta);
Perl_sv_catpvf(aTHX_ t, "[%s]", pv_display(tmp, SvPVX_const(sv)-delta, delta, 0, 127));
}
Perl_sv_catpvf(aTHX_ t, "%s)", pv_display(tmp, SvPVX_const(sv), SvCUR(sv), SvLEN(sv), 127));
if (SvUTF8(sv))
Perl_sv_catpvf(aTHX_ t, " [UTF8 \"%s\"]",
sv_uni_display(tmp, sv, 6 * SvCUR(sv),
UNI_DISPLAY_QQ));
SvREFCNT_dec_NN(tmp);
}
}
else if (SvNOKp(sv)) {
STORE_LC_NUMERIC_UNDERLYING_SET_STANDARD();
Perl_sv_catpvf(aTHX_ t, "(%"NVgf")",SvNVX(sv));
RESTORE_LC_NUMERIC_UNDERLYING();
}
else if (SvIOKp(sv)) {
if (SvIsUV(sv))
Perl_sv_catpvf(aTHX_ t, "(%"UVuf")", (UV)SvUVX(sv));
else
Perl_sv_catpvf(aTHX_ t, "(%"IVdf")", (IV)SvIVX(sv));
}
else
sv_catpv(t, "()");
finish:
while (unref--)
sv_catpv(t, ")");
if (TAINTING_get && sv && SvTAINTED(sv))
sv_catpv(t, " [tainted]");
return SvPV_nolen(t);
}
/*
=head1 Debugging Utilities
*/
void
Perl_dump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
{
va_list args;
PERL_ARGS_ASSERT_DUMP_INDENT;
va_start(args, pat);
dump_vindent(level, file, pat, &args);
va_end(args);
}
void
Perl_dump_vindent(pTHX_ I32 level, PerlIO *file, const char* pat, va_list *args)
{
PERL_ARGS_ASSERT_DUMP_VINDENT;
PerlIO_printf(file, "%*s", (int)(level*PL_dumpindent), "");
PerlIO_vprintf(file, pat, *args);
}
/*
=for apidoc dump_all
Dumps the entire optree of the current program starting at C<PL_main_root> to
C<STDERR>. Also dumps the optrees for all visible subroutines in
C<PL_defstash>.
=cut
*/
void
Perl_dump_all(pTHX)
{
dump_all_perl(FALSE);
}
void
Perl_dump_all_perl(pTHX_ bool justperl)
{
PerlIO_setlinebuf(Perl_debug_log);
if (PL_main_root)
op_dump(PL_main_root);
dump_packsubs_perl(PL_defstash, justperl);
}
/*
=for apidoc dump_packsubs
Dumps the optrees for all visible subroutines in C<stash>.
=cut
*/
void
Perl_dump_packsubs(pTHX_ const HV *stash)
{
PERL_ARGS_ASSERT_DUMP_PACKSUBS;
dump_packsubs_perl(stash, FALSE);
}
void
Perl_dump_packsubs_perl(pTHX_ const HV *stash, bool justperl)
{
I32 i;
PERL_ARGS_ASSERT_DUMP_PACKSUBS_PERL;
if (!HvARRAY(stash))
return;
for (i = 0; i <= (I32) HvMAX(stash); i++) {
const HE *entry;
for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) {
GV * gv = (GV *)HeVAL(entry);
if (SvROK(gv) && SvTYPE(SvRV(gv)) == SVt_PVCV)
/* unfake a fake GV */
(void)CvGV(SvRV(gv));
if (SvTYPE(gv) != SVt_PVGV || !GvGP(gv))
continue;
if (GvCVu(gv))
dump_sub_perl(gv, justperl);
if (GvFORM(gv))
dump_form(gv);
if (HeKEY(entry)[HeKLEN(entry)-1] == ':') {
const HV * const hv = GvHV(gv);
if (hv && (hv != PL_defstash))
dump_packsubs_perl(hv, justperl); /* nested package */
}
}
}
}
void
Perl_dump_sub(pTHX_ const GV *gv)
{
PERL_ARGS_ASSERT_DUMP_SUB;
dump_sub_perl(gv, FALSE);
}
void
Perl_dump_sub_perl(pTHX_ const GV *gv, bool justperl)
{
STRLEN len;
SV * const sv = newSVpvs_flags("", SVs_TEMP);
SV *tmpsv;
const char * name;
PERL_ARGS_ASSERT_DUMP_SUB_PERL;
if (justperl && (CvISXSUB(GvCV(gv)) || !CvROOT(GvCV(gv))))
return;
tmpsv = newSVpvs_flags("", SVs_TEMP);
gv_fullname3(sv, gv, NULL);
name = SvPV_const(sv, len);
Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nSUB %s = ",
generic_pv_escape(tmpsv, name, len, SvUTF8(sv)));
if (CvISXSUB(GvCV(gv)))
Perl_dump_indent(aTHX_ 0, Perl_debug_log, "(xsub 0x%"UVxf" %d)\n",
PTR2UV(CvXSUB(GvCV(gv))),
(int)CvXSUBANY(GvCV(gv)).any_i32);
else if (CvROOT(GvCV(gv)))
op_dump(CvROOT(GvCV(gv)));
else
Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
}
void
Perl_dump_form(pTHX_ const GV *gv)
{
SV * const sv = sv_newmortal();
PERL_ARGS_ASSERT_DUMP_FORM;
gv_fullname3(sv, gv, NULL);
Perl_dump_indent(aTHX_ 0, Perl_debug_log, "\nFORMAT %s = ", SvPVX_const(sv));
if (CvROOT(GvFORM(gv)))
op_dump(CvROOT(GvFORM(gv)));
else
Perl_dump_indent(aTHX_ 0, Perl_debug_log, "<undef>\n");
}
void
Perl_dump_eval(pTHX)
{
op_dump(PL_eval_root);
}
void
Perl_do_pmop_dump(pTHX_ I32 level, PerlIO *file, const PMOP *pm)
{
char ch;
PERL_ARGS_ASSERT_DO_PMOP_DUMP;
if (!pm) {
Perl_dump_indent(aTHX_ level, file, "{}\n");
return;
}
Perl_dump_indent(aTHX_ level, file, "{\n");
level++;
if (pm->op_pmflags & PMf_ONCE)
ch = '?';
else
ch = '/';
if (PM_GETRE(pm))
Perl_dump_indent(aTHX_ level, file, "PMf_PRE %c%.*s%c%s\n",
ch,(int)RX_PRELEN(PM_GETRE(pm)), RX_PRECOMP(PM_GETRE(pm)), ch,
(pm->op_private & OPpRUNTIME) ? " (RUNTIME)" : "");
else
Perl_dump_indent(aTHX_ level, file, "PMf_PRE (RUNTIME)\n");
if (pm->op_type != OP_PUSHRE && pm->op_pmreplrootu.op_pmreplroot) {
Perl_dump_indent(aTHX_ level, file, "PMf_REPL = ");
op_dump(pm->op_pmreplrootu.op_pmreplroot);
}
if (pm->op_code_list) {
if (pm->op_pmflags & PMf_CODELIST_PRIVATE) {
Perl_dump_indent(aTHX_ level, file, "CODE_LIST =\n");
do_op_dump(level, file, pm->op_code_list);
}
else
Perl_dump_indent(aTHX_ level, file, "CODE_LIST = 0x%"UVxf"\n",
PTR2UV(pm->op_code_list));
}
if (pm->op_pmflags || (PM_GETRE(pm) && RX_CHECK_SUBSTR(PM_GETRE(pm)))) {
SV * const tmpsv = pm_description(pm);
Perl_dump_indent(aTHX_ level, file, "PMFLAGS = (%s)\n", SvCUR(tmpsv) ? SvPVX_const(tmpsv) + 1 : "");
SvREFCNT_dec_NN(tmpsv);
}
Perl_dump_indent(aTHX_ level-1, file, "}\n");
}
const struct flag_to_name pmflags_flags_names[] = {
{PMf_CONST, ",CONST"},
{PMf_KEEP, ",KEEP"},
{PMf_GLOBAL, ",GLOBAL"},
{PMf_CONTINUE, ",CONTINUE"},
{PMf_RETAINT, ",RETAINT"},
{PMf_EVAL, ",EVAL"},
{PMf_NONDESTRUCT, ",NONDESTRUCT"},
{PMf_HAS_CV, ",HAS_CV"},
{PMf_CODELIST_PRIVATE, ",CODELIST_PRIVATE"},
{PMf_IS_QR, ",IS_QR"}
};
static SV *
S_pm_description(pTHX_ const PMOP *pm)
{
SV * const desc = newSVpvs("");
const REGEXP * const regex = PM_GETRE(pm);
const U32 pmflags = pm->op_pmflags;
PERL_ARGS_ASSERT_PM_DESCRIPTION;
if (pmflags & PMf_ONCE)
sv_catpv(desc, ",ONCE");
#ifdef USE_ITHREADS
if (SvREADONLY(PL_regex_pad[pm->op_pmoffset]))
sv_catpv(desc, ":USED");
#else
if (pmflags & PMf_USED)
sv_catpv(desc, ":USED");
#endif
if (regex) {
if (RX_ISTAINTED(regex))
sv_catpv(desc, ",TAINTED");
if (RX_CHECK_SUBSTR(regex)) {
if (!(RX_INTFLAGS(regex) & PREGf_NOSCAN))
sv_catpv(desc, ",SCANFIRST");
if (RX_EXTFLAGS(regex) & RXf_CHECK_ALL)
sv_catpv(desc, ",ALL");
}
if (RX_EXTFLAGS(regex) & RXf_SKIPWHITE)
sv_catpv(desc, ",SKIPWHITE");
}
append_flags(desc, pmflags, pmflags_flags_names);
return desc;
}
void
Perl_pmop_dump(pTHX_ PMOP *pm)
{
do_pmop_dump(0, Perl_debug_log, pm);
}
/* Return a unique integer to represent the address of op o.
* If it already exists in PL_op_sequence, just return it;
* otherwise add it.
* *** Note that this isn't thread-safe */
STATIC UV
S_sequence_num(pTHX_ const OP *o)
{
dVAR;
SV *op,
**seq;
const char *key;
STRLEN len;
if (!o)
return 0;
op = newSVuv(PTR2UV(o));
sv_2mortal(op);
key = SvPV_const(op, len);
if (!PL_op_sequence)
PL_op_sequence = newHV();
seq = hv_fetch(PL_op_sequence, key, len, 0);
if (seq)
return SvUV(*seq);
(void)hv_store(PL_op_sequence, key, len, newSVuv(++PL_op_seq), 0);
return PL_op_seq;
}
const struct flag_to_name op_flags_names[] = {
{OPf_KIDS, ",KIDS"},
{OPf_PARENS, ",PARENS"},
{OPf_REF, ",REF"},
{OPf_MOD, ",MOD"},
{OPf_STACKED, ",STACKED"},
{OPf_SPECIAL, ",SPECIAL"}
};
void
Perl_do_op_dump(pTHX_ I32 level, PerlIO *file, const OP *o)
{
UV seq;
const OPCODE optype = o->op_type;
PERL_ARGS_ASSERT_DO_OP_DUMP;
Perl_dump_indent(aTHX_ level, file, "{\n");
level++;
seq = sequence_num(o);
if (seq)
PerlIO_printf(file, "%-4"UVuf, seq);
else
PerlIO_printf(file, "????");
PerlIO_printf(file,
"%*sTYPE = %s ===> ",
(int)(PL_dumpindent*level-4), "", OP_NAME(o));
if (o->op_next)
PerlIO_printf(file,
o->op_type == OP_NULL ? "(%"UVuf")\n" : "%"UVuf"\n",
sequence_num(o->op_next));
else
PerlIO_printf(file, "NULL\n");
if (o->op_targ) {
if (optype == OP_NULL) {
Perl_dump_indent(aTHX_ level, file, " (was %s)\n", PL_op_name[o->op_targ]);
}
else
Perl_dump_indent(aTHX_ level, file, "TARG = %ld\n", (long)o->op_targ);
}
#ifdef DUMPADDR
Perl_dump_indent(aTHX_ level, file, "ADDR = 0x%"UVxf" => 0x%"UVxf"\n", (UV)o, (UV)o->op_next);
#endif
if (o->op_flags || o->op_slabbed || o->op_savefree || o->op_static) {
SV * const tmpsv = newSVpvs("");
switch (o->op_flags & OPf_WANT) {
case OPf_WANT_VOID:
sv_catpv(tmpsv, ",VOID");
break;
case OPf_WANT_SCALAR:
sv_catpv(tmpsv, ",SCALAR");
break;
case OPf_WANT_LIST:
sv_catpv(tmpsv, ",LIST");
break;
default:
sv_catpv(tmpsv, ",UNKNOWN");
break;
}
append_flags(tmpsv, o->op_flags, op_flags_names);
if (o->op_slabbed) sv_catpvs(tmpsv, ",SLABBED");
if (o->op_savefree) sv_catpvs(tmpsv, ",SAVEFREE");
if (o->op_static) sv_catpvs(tmpsv, ",STATIC");
if (o->op_folded) sv_catpvs(tmpsv, ",FOLDED");
if (o->op_moresib) sv_catpvs(tmpsv, ",MORESIB");
Perl_dump_indent(aTHX_ level, file, "FLAGS = (%s)\n",
SvCUR(tmpsv) ? SvPVX_const(tmpsv) + 1 : "");
}
if (o->op_private) {
U16 oppriv = o->op_private;
I16 op_ix = PL_op_private_bitdef_ix[o->op_type];
SV * tmpsv = NULL;
if (op_ix != -1) {
U16 stop = 0;
tmpsv = newSVpvs("");
for (; !stop; op_ix++) {
U16 entry = PL_op_private_bitdefs[op_ix];
U16 bit = (entry >> 2) & 7;
U16 ix = entry >> 5;
stop = (entry & 1);
if (entry & 2) {
/* bitfield */
I16 const *p = &PL_op_private_bitfields[ix];
U16 bitmin = (U16) *p++;
I16 label = *p++;
I16 enum_label;
U16 mask = 0;
U16 i;
U16 val;
for (i = bitmin; i<= bit; i++)
mask |= (1<<i);
bit = bitmin;
val = (oppriv & mask);
if ( label != -1
&& PL_op_private_labels[label] == '-'
&& PL_op_private_labels[label+1] == '\0'
)
/* display as raw number */
continue;
oppriv -= val;
val >>= bit;
enum_label = -1;
while (*p != -1) {
if (val == *p++) {
enum_label = *p;
break;
}
p++;
}
if (val == 0 && enum_label == -1)
/* don't display anonymous zero values */
continue;
sv_catpv(tmpsv, ",");
if (label != -1) {
sv_catpv(tmpsv, &PL_op_private_labels[label]);
sv_catpv(tmpsv, "=");
}
if (enum_label == -1)
Perl_sv_catpvf(aTHX_ tmpsv, "0x%"UVxf, (UV)val);
else
sv_catpv(tmpsv, &PL_op_private_labels[enum_label]);
}
else {
/* bit flag */
if ( oppriv & (1<<bit)
&& !(PL_op_private_labels[ix] == '-'
&& PL_op_private_labels[ix+1] == '\0'))
{
oppriv -= (1<<bit);
sv_catpv(tmpsv, ",");
sv_catpv(tmpsv, &PL_op_private_labels[ix]);
}
}
}
if (oppriv) {
sv_catpv(tmpsv, ",");
Perl_sv_catpvf(aTHX_ tmpsv, "0x%"UVxf, (UV)oppriv);
}
}
if (tmpsv && SvCUR(tmpsv)) {
Perl_dump_indent(aTHX_ level, file, "PRIVATE = (%s)\n", SvPVX_const(tmpsv) + 1);
} else
Perl_dump_indent(aTHX_ level, file, "PRIVATE = (0x%"UVxf")\n",
(UV)oppriv);
}
switch (optype) {
case OP_AELEMFAST:
case OP_GVSV:
case OP_GV:
#ifdef USE_ITHREADS
Perl_dump_indent(aTHX_ level, file, "PADIX = %" IVdf "\n", (IV)cPADOPo->op_padix);
#else
if ( ! (o->op_flags & OPf_SPECIAL)) { /* not lexical */
if (cSVOPo->op_sv) {
STRLEN len;
const char * name;
SV * const tmpsv = newSVpvs_flags("", SVs_TEMP);
SV * const tmpsv2 = newSVpvs_flags("", SVs_TEMP);
gv_fullname3(tmpsv, MUTABLE_GV(cSVOPo->op_sv), NULL);
name = SvPV_const(tmpsv, len);
Perl_dump_indent(aTHX_ level, file, "GV = %s\n",
generic_pv_escape( tmpsv2, name, len, SvUTF8(tmpsv)));
}
else
Perl_dump_indent(aTHX_ level, file, "GV = NULL\n");
}
#endif
break;
case OP_MULTIDEREF:
{
UNOP_AUX_item *items = cUNOP_AUXo->op_aux;
UV i, count = items[-1].uv;
Perl_dump_indent(aTHX_ level, file, "ARGS = \n");
for (i=0; i < count; i++)
Perl_dump_indent(aTHX_ level+1, file, "%"UVuf" => 0x%"UVxf"\n",
i, items[i].uv);
break;
}
case OP_CONST:
case OP_HINTSEVAL:
case OP_METHOD_NAMED:
case OP_METHOD_SUPER:
case OP_METHOD_REDIR:
case OP_METHOD_REDIR_SUPER:
#ifndef USE_ITHREADS
/* with ITHREADS, consts are stored in the pad, and the right pad
* may not be active here, so skip */
Perl_dump_indent(aTHX_ level, file, "SV = %s\n", SvPEEK(cMETHOPx_meth(o)));
#endif
break;
case OP_NULL:
if (o->op_targ != OP_NEXTSTATE && o->op_targ != OP_DBSTATE)
break;
/* FALLTHROUGH */
case OP_NEXTSTATE:
case OP_DBSTATE:
if (CopLINE(cCOPo))
Perl_dump_indent(aTHX_ level, file, "LINE = %"UVuf"\n",
(UV)CopLINE(cCOPo));
if (CopSTASHPV(cCOPo)) {
SV* tmpsv = newSVpvs_flags("", SVs_TEMP);
HV *stash = CopSTASH(cCOPo);
const char * const hvname = HvNAME_get(stash);
Perl_dump_indent(aTHX_ level, file, "PACKAGE = \"%s\"\n",