/
Dumper.xs
1777 lines (1617 loc) · 51.3 KB
/
Dumper.xs
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#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
/* FIXME - we should go through the code and validate what we can remove.
Looks like we could elimiate much of our custom utf8_to_uvchr_buf games in
favour of ppport.h, and likewise if we replace my_sprintf with my_snprintf
some more complexity dies. */
#ifdef USE_PPPORT_H
# define NEED_my_snprintf
# define NEED_sv_2pv_flags
# define NEED_utf8_to_uvchr_buf
# include "ppport.h"
#endif
#if PERL_VERSION_LT(5,8,0)
# define DD_USE_OLD_ID_FORMAT
#endif
#ifndef strlcpy
# ifdef my_strlcpy
# define strlcpy(d,s,l) my_strlcpy(d,s,l)
# else
# define strlcpy(d,s,l) strcpy(d,s)
# endif
#endif
/* These definitions are ASCII only. But the pure-perl .pm avoids
* calling this .xs file for releases where they aren't defined */
#ifndef isASCII
# define isASCII(c) (((UV) (c)) < 128)
#endif
#ifndef ESC_NATIVE /* \e */
# define ESC_NATIVE 27
#endif
#ifndef isPRINT
# define isPRINT(c) (((UV) (c)) >= ' ' && ((UV) (c)) < 127)
#endif
#ifndef isALPHA
# define isALPHA(c) ( (((UV) (c)) >= 'a' && ((UV) (c)) <= 'z') \
|| (((UV) (c)) <= 'Z' && ((UV) (c)) >= 'A'))
#endif
#ifndef isIDFIRST
# define isIDFIRST(c) (isALPHA(c) || (c) == '_')
#endif
#ifndef isWORDCHAR
# define isWORDCHAR(c) (isIDFIRST(c) \
|| (((UV) (c)) >= '0' && ((UV) (c)) <= '9'))
#endif
/* SvPVCLEAR only from perl 5.25.6 */
#ifndef SvPVCLEAR
# define SvPVCLEAR(sv) sv_setpvs((sv), "")
#endif
#ifndef memBEGINs
# define memBEGINs(s1, l, s2) \
( (l) >= sizeof(s2) - 1 \
&& memEQ(s1, "" s2 "", sizeof(s2)-1))
#endif
/* This struct contains almost all the user's desired configuration, and it
* is treated as mostly constant (except for maxrecursed) by the recursive
* function. This arrangement has the advantage of needing less memory
* than passing all of them on the stack all the time (as was the case in
* an earlier implementation). */
typedef struct {
SV *pad;
SV *xpad;
SV *sep;
SV *pair;
SV *sortkeys;
SV *freezer;
SV *toaster;
SV *bless;
IV maxrecurse;
bool maxrecursed; /* at some point we exceeded the maximum recursion level */
I32 indent;
I32 purity;
I32 deepcopy;
I32 quotekeys;
I32 maxdepth;
I32 useqq;
int use_sparse_seen_hash;
int trailingcomma;
int deparse;
} Style;
static STRLEN num_q (const char *s, STRLEN slen);
static STRLEN esc_q (char *dest, const char *src, STRLEN slen);
static STRLEN esc_q_utf8 (pTHX_ SV *sv, const char *src, STRLEN slen, I32 do_utf8, I32 useqq);
static bool globname_needs_quote(const char *s, STRLEN len);
#ifndef GvNAMEUTF8
static bool globname_supra_ascii(const char *s, STRLEN len);
#endif
static bool key_needs_quote(const char *s, STRLEN len);
static bool safe_decimal_number(const char *p, STRLEN len);
static SV *sv_x (pTHX_ SV *sv, const char *str, STRLEN len, I32 n);
static I32 DD_dump (pTHX_ SV *val, const char *name, STRLEN namelen, SV *retval,
HV *seenhv, AV *postav, const I32 level, SV *apad,
Style *style);
#ifndef HvNAME_get
#define HvNAME_get HvNAME
#endif
/* Perls 7 through portions of 15 used utf8_to_uvchr() which didn't have a
* length parameter. This wrongly allowed reading beyond the end of buffer
* given malformed input */
#if PERL_VERSION_LE(5,6,'*') /* Perl 5.6 and earlier */
UV
Perl_utf8_to_uvchr_buf(pTHX_ U8 *s, U8 *send, STRLEN *retlen)
{
const UV uv = utf8_to_uv(s, send - s, retlen,
ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
return UNI_TO_NATIVE(uv);
}
# if !defined(PERL_IMPLICIT_CONTEXT)
# define utf8_to_uvchr_buf Perl_utf8_to_uvchr_buf
# else
# define utf8_to_uvchr_buf(a,b,c) Perl_utf8_to_uvchr_buf(aTHX_ a,b,c)
# endif
#endif /* PERL_VERSION_LE(5,6,'*') */
/* Perl 5.7 through part of 5.15 */
#if PERL_VERSION_GE(5,7,0) && PERL_VERSION_LE(5,15,'*') && ! defined(utf8_to_uvchr_buf)
UV
Perl_utf8_to_uvchr_buf(pTHX_ U8 *s, U8 *send, STRLEN *retlen)
{
/* We have to discard <send> for these versions; hence can read off the
* end of the buffer if there is a malformation that indicates the
* character is longer than the space available */
return utf8_to_uvchr(s, retlen);
}
# if !defined(PERL_IMPLICIT_CONTEXT)
# define utf8_to_uvchr_buf Perl_utf8_to_uvchr_buf
# else
# define utf8_to_uvchr_buf(a,b,c) Perl_utf8_to_uvchr_buf(aTHX_ a,b,c)
# endif
#endif /* Perl 5.7 through part of 5.15 */
/* Changes in 5.7 series mean that now IOK is only set if scalar is
precisely integer but in 5.6 and earlier we need to do a more
complex test */
#if PERL_VERSION_LT(5,7,0)
#define DD_is_integer(sv) (SvIOK(sv) && (SvIsUV(val) ? SvUV(sv) == SvNV(sv) : SvIV(sv) == SvNV(sv)))
#else
#define DD_is_integer(sv) SvIOK(sv)
#endif
/* does a glob name need to be protected? */
static bool
globname_needs_quote(const char *ss, STRLEN len)
{
const U8 *s = (const U8 *) ss;
const U8 *send = s+len;
TOP:
if (s[0] == ':') {
if (++s<send) {
if (*s++ != ':')
return TRUE;
}
else
return TRUE;
}
if (isIDFIRST(*s)) {
while (++s<send)
if (!isWORDCHAR(*s)) {
if (*s == ':')
goto TOP;
else
return TRUE;
}
}
else
return TRUE;
return FALSE;
}
#ifndef GvNAMEUTF8
/* does a glob name contain supra-ASCII characters? */
static bool
globname_supra_ascii(const char *ss, STRLEN len)
{
const U8 *s = (const U8 *) ss;
const U8 *send = s+len;
while (s < send) {
if (!isASCII(*s))
return TRUE;
s++;
}
return FALSE;
}
#endif
/* does a hash key need to be quoted (to the left of => ).
Previously this used (globname_)needs_quote() which accepted strings
like '::foo', but these aren't safe as unquoted keys under strict.
*/
static bool
key_needs_quote(const char *s, STRLEN len) {
const char *send = s+len;
if (safe_decimal_number(s, len)) {
return FALSE;
}
else if (isIDFIRST(*s)) {
while (++s<send)
if (!isWORDCHAR(*s))
return TRUE;
}
else
return TRUE;
return FALSE;
}
/* Check that the SV can be represented as a simple decimal integer.
*
* The perl code does this by matching against /^(?:0|-?[1-9]\d{0,8})\z/
*/
static bool
safe_decimal_number(const char *p, STRLEN len) {
if (len == 1 && *p == '0')
return TRUE;
if (len && *p == '-') {
++p;
--len;
}
if (len == 0 || *p < '1' || *p > '9')
return FALSE;
++p;
--len;
if (len > 8)
return FALSE;
while (len > 0) {
/* the perl code checks /\d/ but we don't want unicode digits here */
if (*p < '0' || *p > '9')
return FALSE;
++p;
--len;
}
return TRUE;
}
/* count the number of "'"s and "\"s in string */
static STRLEN
num_q(const char *s, STRLEN slen)
{
STRLEN ret = 0;
while (slen > 0) {
if (*s == '\'' || *s == '\\')
++ret;
++s;
--slen;
}
return ret;
}
/* returns number of chars added to escape "'"s and "\"s in s */
/* slen number of characters in s will be escaped */
/* destination must be long enough for additional chars */
static STRLEN
esc_q(char *d, const char *s, STRLEN slen)
{
STRLEN ret = 0;
while (slen > 0) {
switch (*s) {
case '\'':
case '\\':
*d = '\\';
++d; ++ret;
/* FALLTHROUGH */
default:
*d = *s;
++d; ++s; --slen;
break;
}
}
return ret;
}
/* this function is also misused for implementing $Useqq */
static STRLEN
esc_q_utf8(pTHX_ SV* sv, const char *src, STRLEN slen, I32 do_utf8, I32 useqq)
{
char *r, *rstart;
const char *s = src;
const char * const send = src + slen;
STRLEN j, cur = SvCUR(sv);
/* Could count 128-255 and 256+ in two variables, if we want to
be like &qquote and make a distinction. */
STRLEN grow = 0; /* bytes needed to represent chars 128+ */
/* STRLEN topbit_grow = 0; bytes needed to represent chars 128-255 */
STRLEN backslashes = 0;
STRLEN single_quotes = 0;
STRLEN qq_escapables = 0; /* " $ @ will need a \ in "" strings. */
STRLEN normal = 0;
int increment;
for (s = src; s < send; s += increment) { /* Sizing pass */
UV k = *(U8*)s;
increment = 1; /* Will override if necessary for utf-8 */
if (isPRINT(k)) {
if (k == '\\') {
backslashes++;
} else if (k == '\'') {
single_quotes++;
} else if (k == '"' || k == '$' || k == '@') {
qq_escapables++;
} else {
normal++;
}
}
else if (! isASCII(k) && k > ' ') {
/* High ordinal non-printable code point. (The test that k is
* above SPACE should be optimized out by the compiler on
* non-EBCDIC platforms; otherwise we could put an #ifdef around
* it, but it's better to have just a single code path when
* possible. All but one of the non-ASCII EBCDIC controls are low
* ordinal; that one is the only one above SPACE.)
*
* If UTF-8, output as hex, regardless of useqq. This means there
* is an overhead of 4 chars '\x{}'. Then count the number of hex
* digits. */
if (do_utf8) {
k = utf8_to_uvchr_buf((U8*)s, (U8*) send, NULL);
/* treat invalid utf8 byte by byte. This loop iteration gets the
* first byte */
increment = (k == 0 && *s != '\0') ? 1 : UTF8SKIP(s);
grow += 4 + (k <= 0xFF ? 2 : k <= 0xFFF ? 3 : k <= 0xFFFF ? 4 :
#if UVSIZE == 4
8 /* We may allocate a bit more than the minimum here. */
#else
k <= 0xFFFFFFFF ? 8 : UVSIZE * 4
#endif
);
}
else if (useqq) { /* Not utf8, must be <= 0xFF, hence 2 hex
* digits. */
grow += 4 + 2;
}
else { /* Non-qq generates 3 octal digits plus backslash */
grow += 4;
}
} /* End of high-ordinal non-printable */
else if (! useqq) { /* Low ordinal, non-printable, non-qq just
* outputs the raw char */
normal++;
}
else { /* Is qq, low ordinal, non-printable. Output escape
* sequences */
if ( k == '\a' || k == '\b' || k == '\t' || k == '\n' || k == '\r'
|| k == '\f' || k == ESC_NATIVE)
{
grow += 2; /* 1 char plus backslash */
}
else /* The other low ordinals are output as an octal escape
* sequence */
if (s + 1 >= send || ( *(U8*)(s+1) >= '0'
&& *(U8*)(s+1) <= '9'))
{
/* When the following character is a digit, use 3 octal digits
* plus backslash, as using fewer digits would concatenate the
* following char into this one */
grow += 4;
}
else if (k <= 7) {
grow += 2; /* 1 octal digit, plus backslash */
}
else if (k <= 077) {
grow += 3; /* 2 octal digits plus backslash */
}
else {
grow += 4; /* 3 octal digits plus backslash */
}
}
} /* End of size-calculating loop */
if (grow || useqq) {
/* We have something needing hex. 3 is ""\0 */
sv_grow(sv, cur + 3 + grow + 2*backslashes + single_quotes
+ 2*qq_escapables + normal);
rstart = r = SvPVX(sv) + cur;
*r++ = '"';
for (s = src; s < send; s += increment) {
U8 c0 = *(U8 *)s;
UV k;
if (do_utf8
&& ! isASCII(c0)
/* Exclude non-ASCII low ordinal controls. This should be
* optimized out by the compiler on ASCII platforms; if not
* could wrap it in a #ifdef EBCDIC, but better to avoid
* #if's if possible */
&& c0 > ' '
) {
/* When in UTF-8, we output all non-ascii chars as \x{}
* reqardless of useqq, except for the low ordinal controls on
* EBCDIC platforms */
k = utf8_to_uvchr_buf((U8*)s, (U8*) send, NULL);
/* treat invalid utf8 byte by byte. This loop iteration gets the
* first byte */
increment = (k == 0 && *s != '\0') ? 1 : UTF8SKIP(s);
#if PERL_VERSION_LT(5,10,0)
sprintf(r, "\\x{%" UVxf "}", k);
r += strlen(r);
/* my_sprintf is not supported by ppport.h */
#else
r = r + my_sprintf(r, "\\x{%" UVxf "}", k);
#endif
continue;
}
/* Here 1) isn't UTF-8; or
* 2) the current character is ASCII; or
* 3) it is an EBCDIC platform and is a low ordinal
* non-ASCII control.
* In each case the character occupies just one byte */
k = *(U8*)s;
increment = 1;
if (isPRINT(k)) {
/* These need a backslash escape */
if (k == '"' || k == '\\' || k == '$' || k == '@') {
*r++ = '\\';
}
*r++ = (char)k;
}
else if (! useqq) { /* non-qq, non-printable, low-ordinal is
* output raw */
*r++ = (char)k;
}
else { /* Is qq means use escape sequences */
bool next_is_digit;
*r++ = '\\';
switch (k) {
case '\a': *r++ = 'a'; break;
case '\b': *r++ = 'b'; break;
case '\t': *r++ = 't'; break;
case '\n': *r++ = 'n'; break;
case '\f': *r++ = 'f'; break;
case '\r': *r++ = 'r'; break;
case ESC_NATIVE: *r++ = 'e'; break;
default:
/* only ASCII digits matter here, which are invariant,
* since we only encode characters \377 and under, or
* \x177 and under for a unicode string
*/
next_is_digit = (s + 1 >= send )
? FALSE
: (*(U8*)(s+1) >= '0' && *(U8*)(s+1) <= '9');
/* faster than
* r = r + my_sprintf(r, "%o", k);
*/
if (k <= 7 && !next_is_digit) {
*r++ = (char)k + '0';
} else if (k <= 63 && !next_is_digit) {
*r++ = (char)(k>>3) + '0';
*r++ = (char)(k&7) + '0';
} else {
*r++ = (char)(k>>6) + '0';
*r++ = (char)((k&63)>>3) + '0';
*r++ = (char)(k&7) + '0';
}
}
}
}
*r++ = '"';
} else {
/* Single quotes. */
sv_grow(sv, cur + 3 + 2*backslashes + 2*single_quotes
+ qq_escapables + normal);
rstart = r = SvPVX(sv) + cur;
*r++ = '\'';
for (s = src; s < send; s ++) {
const char k = *s;
if (k == '\'' || k == '\\')
*r++ = '\\';
*r++ = k;
}
*r++ = '\'';
}
*r = '\0';
j = r - rstart;
SvCUR_set(sv, cur + j);
return j;
}
/* append a repeated string to an SV */
static SV *
sv_x(pTHX_ SV *sv, const char *str, STRLEN len, I32 n)
{
if (!sv)
sv = newSVpvs("");
#ifdef DEBUGGING
else
assert(SvTYPE(sv) >= SVt_PV);
#endif
if (n > 0) {
SvGROW(sv, len*n + SvCUR(sv) + 1);
if (len == 1) {
char * const start = SvPVX(sv) + SvCUR(sv);
SvCUR_set(sv, SvCUR(sv) + n);
start[n] = '\0';
while (n > 0)
start[--n] = str[0];
}
else
while (n > 0) {
sv_catpvn(sv, str, len);
--n;
}
}
return sv;
}
static SV *
deparsed_output(pTHX_ SV *val)
{
SV *text;
int n;
dSP;
/* This is passed to load_module(), which decrements its ref count and
* modifies it (so we also can't reuse it below) */
SV *pkg = newSVpvs("B::Deparse");
/* Commit ebdc88085efa6fca8a1b0afaa388f0491bdccd5a (first released as part
* of 5.19.7) changed core S_process_special_blocks() to use a new stack
* for anything using a BEGIN block, on the grounds that doing so "avoids
* the stack moving underneath anything that directly or indirectly calls
* Perl_load_module()". If we're in an older Perl, we can't rely on that
* stack, and must create a fresh sacrificial stack of our own. */
#if PERL_VERSION_LT(5,20,0)
PUSHSTACKi(PERLSI_REQUIRE);
#endif
load_module(PERL_LOADMOD_NOIMPORT, pkg, 0);
#if PERL_VERSION_LT(5,20,0)
POPSTACK;
SPAGAIN;
#endif
SAVETMPS;
PUSHMARK(SP);
mXPUSHs(newSVpvs("B::Deparse"));
PUTBACK;
n = call_method("new", G_SCALAR);
SPAGAIN;
if (n != 1) {
croak("B::Deparse->new returned %d items, but expected exactly 1", n);
}
PUSHMARK(SP - n);
XPUSHs(val);
PUTBACK;
n = call_method("coderef2text", G_SCALAR);
SPAGAIN;
if (n != 1) {
croak("$b_deparse->coderef2text returned %d items, but expected exactly 1", n);
}
text = POPs;
SvREFCNT_inc(text); /* the caller will mortalise this */
FREETMPS;
PUTBACK;
return text;
}
static void
dump_regexp(pTHX_ SV *retval, SV *val)
{
STRLEN rlen;
SV *sv_pattern = NULL;
SV *sv_flags = NULL;
const char *rval;
const char *rend;
const char *slash;
CV *re_pattern_cv = get_cv("re::regexp_pattern", 0);
if (!re_pattern_cv) {
sv_pattern = val;
}
else {
dSP;
I32 count;
ENTER;
SAVETMPS;
PUSHMARK(SP);
XPUSHs(val);
PUTBACK;
count = call_sv((SV*)re_pattern_cv, G_ARRAY);
SPAGAIN;
if (count >= 2) {
sv_flags = POPs;
sv_pattern = POPs;
SvREFCNT_inc(sv_flags);
SvREFCNT_inc(sv_pattern);
}
PUTBACK;
FREETMPS;
LEAVE;
if (sv_pattern) {
sv_2mortal(sv_pattern);
sv_2mortal(sv_flags);
}
}
assert(sv_pattern);
rval = SvPV(sv_pattern, rlen);
rend = rval+rlen;
slash = rval;
sv_catpvs(retval, "qr/");
for ( ; slash < rend; slash++) {
if (*slash == '\\') {
++slash;
continue;
}
if (*slash == '/') {
sv_catpvn(retval, rval, slash-rval);
sv_catpvs(retval, "\\/");
rlen -= slash-rval+1;
rval = slash+1;
}
}
sv_catpvn(retval, rval, rlen);
sv_catpvs(retval, "/");
if (sv_flags)
sv_catsv(retval, sv_flags);
}
/*
* This ought to be split into smaller functions. (it is one long function since
* it exactly parallels the perl version, which was one long thing for
* efficiency raisins.) Ugggh!
*/
static I32
DD_dump(pTHX_ SV *val, const char *name, STRLEN namelen, SV *retval, HV *seenhv,
AV *postav, const I32 level, SV *apad, Style *style)
{
char tmpbuf[128];
Size_t i;
char *c, *r, *realpack;
#ifdef DD_USE_OLD_ID_FORMAT
char id[128];
#else
UV id_buffer;
char *const id = (char *)&id_buffer;
#endif
SV **svp;
SV *sv, *ipad, *ival;
SV *blesspad = Nullsv;
AV *seenentry = NULL;
char *iname;
STRLEN inamelen, idlen = 0;
U32 realtype;
bool no_bless = 0; /* when a qr// is blessed into Regexp we dont want to bless it.
in later perls we should actually check the classname of the
engine. this gets tricky as it involves lexical issues that arent so
easy to resolve */
bool is_regex = 0; /* we are dumping a regex, we need to know this before we bless */
if (!val)
return 0;
if (style->maxrecursed)
return 0;
/* If the output buffer has less than some arbitrary amount of space
remaining, then enlarge it. For the test case (25M of output),
*1.1 was slower, *2.0 was the same, so the first guess of 1.5 is
deemed to be good enough. */
if (SvTYPE(retval) >= SVt_PV && (SvLEN(retval) - SvCUR(retval)) < 42) {
sv_grow(retval, SvCUR(retval) * 3 / 2);
}
realtype = SvTYPE(val);
if (SvGMAGICAL(val))
mg_get(val);
if (SvROK(val)) {
/* If a freeze method is provided and the object has it, call
it. Warn on errors. */
if (SvOBJECT(SvRV(val)) && style->freezer &&
SvPOK(style->freezer) && SvCUR(style->freezer) &&
gv_fetchmeth(SvSTASH(SvRV(val)), SvPVX_const(style->freezer),
SvCUR(style->freezer), -1) != NULL)
{
dSP; ENTER; SAVETMPS; PUSHMARK(sp);
XPUSHs(val); PUTBACK;
i = perl_call_method(SvPVX_const(style->freezer), G_EVAL|G_VOID|G_DISCARD);
SPAGAIN;
if (SvTRUE(ERRSV))
warn("WARNING(Freezer method call failed): %" SVf, ERRSV);
PUTBACK; FREETMPS; LEAVE;
}
ival = SvRV(val);
realtype = SvTYPE(ival);
#ifdef DD_USE_OLD_ID_FORMAT
idlen = my_snprintf(id, sizeof(id), "0x%" UVxf, PTR2UV(ival));
#else
id_buffer = PTR2UV(ival);
idlen = sizeof(id_buffer);
#endif
if (SvOBJECT(ival))
realpack = HvNAME_get(SvSTASH(ival));
else
realpack = NULL;
/* if it has a name, we need to either look it up, or keep a tab
* on it so we know when we hit it later
*/
if (namelen) {
if ((svp = hv_fetch(seenhv, id, idlen, FALSE))
&& (sv = *svp) && SvROK(sv) && (seenentry = (AV*)SvRV(sv)))
{
SV *othername;
if ((svp = av_fetch(seenentry, 0, FALSE))
&& (othername = *svp))
{
if (style->purity && level > 0) {
SV *postentry;
if (realtype == SVt_PVHV)
sv_catpvs(retval, "{}");
else if (realtype == SVt_PVAV)
sv_catpvs(retval, "[]");
else
sv_catpvs(retval, "do{my $o}");
postentry = newSVpvn(name, namelen);
sv_catpvs(postentry, " = ");
sv_catsv(postentry, othername);
av_push(postav, postentry);
}
else {
if (name[0] == '@' || name[0] == '%') {
if ((SvPVX_const(othername))[0] == '\\' &&
(SvPVX_const(othername))[1] == name[0]) {
sv_catpvn(retval, SvPVX_const(othername)+1,
SvCUR(othername)-1);
}
else {
sv_catpvn(retval, name, 1);
sv_catpvs(retval, "{");
sv_catsv(retval, othername);
sv_catpvs(retval, "}");
}
}
else
sv_catsv(retval, othername);
}
return 1;
}
else {
#ifdef DD_USE_OLD_ID_FORMAT
warn("ref name not found for %s", id);
#else
warn("ref name not found for 0x%" UVxf, PTR2UV(ival));
#endif
return 0;
}
}
else { /* store our name and continue */
SV *namesv;
if (name[0] == '@' || name[0] == '%') {
namesv = newSVpvs("\\");
sv_catpvn(namesv, name, namelen);
}
else if (realtype == SVt_PVCV && name[0] == '*') {
namesv = newSVpvs("\\");
sv_catpvn(namesv, name, namelen);
(SvPVX(namesv))[1] = '&';
}
else
namesv = newSVpvn(name, namelen);
seenentry = newAV();
av_push(seenentry, namesv);
(void)SvREFCNT_inc(val);
av_push(seenentry, val);
(void)hv_store(seenhv, id, idlen,
newRV_inc((SV*)seenentry), 0);
SvREFCNT_dec(seenentry);
}
}
/* regexps dont have to be blessed into package "Regexp"
* they can be blessed into any package.
*/
#if PERL_VERSION_LT(5,8,0)
if (realpack && *realpack == 'R' && strEQ(realpack, "Regexp"))
#elif PERL_VERSION_LT(5,11,0)
if (realpack && realtype == SVt_PVMG && mg_find(ival, PERL_MAGIC_qr))
#else
if (realpack && realtype == SVt_REGEXP)
#endif
{
is_regex = 1;
if (strEQ(realpack, "Regexp"))
no_bless = 1;
else
no_bless = 0;
}
/* If purity is not set and maxdepth is set, then check depth:
* if we have reached maximum depth, return the string
* representation of the thing we are currently examining
* at this depth (i.e., 'Foo=ARRAY(0xdeadbeef)').
*/
if (!style->purity && style->maxdepth > 0 && level >= style->maxdepth) {
STRLEN vallen;
const char * const valstr = SvPV(val,vallen);
sv_catpvs(retval, "'");
sv_catpvn(retval, valstr, vallen);
sv_catpvs(retval, "'");
return 1;
}
if (style->maxrecurse > 0 && level >= style->maxrecurse) {
style->maxrecursed = TRUE;
}
if (realpack && !no_bless) { /* we have a blessed ref */
STRLEN blesslen;
const char * const blessstr = SvPV(style->bless, blesslen);
sv_catpvn(retval, blessstr, blesslen);
sv_catpvs(retval, "( ");
if (style->indent >= 2) {
blesspad = apad;
apad = sv_2mortal(newSVsv(apad));
sv_x(aTHX_ apad, " ", 1, blesslen+2);
}
}
ipad = sv_x(aTHX_ Nullsv, SvPVX_const(style->xpad), SvCUR(style->xpad), level+1);
sv_2mortal(ipad);
if (is_regex) {
dump_regexp(aTHX_ retval, val);
}
else if (
#if PERL_VERSION_LT(5,9,0)
realtype <= SVt_PVBM
#else
realtype <= SVt_PVMG
#endif
) { /* scalar ref */
SV * const namesv = sv_2mortal(newSVpvs("${"));
sv_catpvn(namesv, name, namelen);
sv_catpvs(namesv, "}");
if (realpack) { /* blessed */
sv_catpvs(retval, "do{\\(my $o = ");
DD_dump(aTHX_ ival, SvPVX_const(namesv), SvCUR(namesv), retval, seenhv,
postav, level+1, apad, style);
sv_catpvs(retval, ")}");
} /* plain */
else {
sv_catpvs(retval, "\\");
DD_dump(aTHX_ ival, SvPVX_const(namesv), SvCUR(namesv), retval, seenhv,
postav, level+1, apad, style);
}
}
else if (realtype == SVt_PVGV) { /* glob ref */
SV * const namesv = newSVpvs("*{");
sv_catpvn(namesv, name, namelen);
sv_catpvs(namesv, "}");
sv_catpvs(retval, "\\");
DD_dump(aTHX_ ival, SvPVX_const(namesv), SvCUR(namesv), retval, seenhv,
postav, level+1, apad, style);
SvREFCNT_dec(namesv);
}
else if (realtype == SVt_PVAV) {
SV *totpad;
SSize_t ix = 0;
const SSize_t ixmax = av_len((AV *)ival);
SV * const ixsv = sv_2mortal(newSViv(0));
/* allowing for a 24 char wide array index */
New(0, iname, namelen+28, char);
SAVEFREEPV(iname);
(void) strlcpy(iname, name, namelen+28);
inamelen = namelen;
if (name[0] == '@') {
sv_catpvs(retval, "(");
iname[0] = '$';
}
else {
sv_catpvs(retval, "[");
/* omit "->" in $foo{bar}->[0], but not in ${$foo}->[0] */
/*if (namelen > 0
&& name[namelen-1] != ']' && name[namelen-1] != '}'
&& (namelen < 4 || (name[1] != '{' && name[2] != '{')))*/
if ((namelen > 0
&& name[namelen-1] != ']' && name[namelen-1] != '}')
|| (namelen > 4
&& (name[1] == '{'
|| (name[0] == '\\' && name[2] == '{'))))
{
iname[inamelen++] = '-'; iname[inamelen++] = '>';
iname[inamelen] = '\0';
}
}
if (iname[0] == '*' && iname[inamelen-1] == '}' && inamelen >= 8 &&
(instr(iname+inamelen-8, "{SCALAR}") ||
instr(iname+inamelen-7, "{ARRAY}") ||
instr(iname+inamelen-6, "{HASH}"))) {
iname[inamelen++] = '-'; iname[inamelen++] = '>';
}
iname[inamelen++] = '['; iname[inamelen] = '\0';
totpad = sv_2mortal(newSVsv(style->sep));
sv_catsv(totpad, style->pad);
sv_catsv(totpad, apad);
for (ix = 0; ix <= ixmax; ++ix) {
STRLEN ilen;
SV *elem;
svp = av_fetch((AV*)ival, ix, FALSE);
if (svp)
elem = *svp;
else
elem = &PL_sv_undef;
ilen = inamelen;
sv_setiv(ixsv, ix);
#if PERL_VERSION_LT(5,10,0)
(void) sprintf(iname+ilen, "%" IVdf, (IV)ix);
ilen = strlen(iname);
#else
ilen = ilen + my_sprintf(iname+ilen, "%" IVdf, (IV)ix);
#endif
iname[ilen++] = ']'; iname[ilen] = '\0';
if (style->indent >= 3) {
sv_catsv(retval, totpad);
sv_catsv(retval, ipad);
sv_catpvs(retval, "#");
sv_catsv(retval, ixsv);
}
sv_catsv(retval, totpad);
sv_catsv(retval, ipad);
ENTER;
SAVETMPS;
DD_dump(aTHX_ elem, iname, ilen, retval, seenhv, postav,
level+1, apad, style);
FREETMPS;
LEAVE;
if (ix < ixmax || (style->trailingcomma && style->indent >= 1))
sv_catpvs(retval, ",");
}