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/* Copyright (c) 1997-2000 Graham Barr <gbarr@pobox.com>. All rights reserved.
* This program is free software; you can redistribute it and/or
* modify it under the same terms as Perl itself.
*/
#define PERL_NO_GET_CONTEXT /* we want efficiency */
#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>
#define NEED_sv_2pv_flags 1
#include "ppport.h"
#if PERL_BCDVERSION >= 0x5006000
# include "multicall.h"
#endif
#ifndef CvISXSUB
# define CvISXSUB(cv) CvXSUB(cv)
#endif
/* Some platforms have strict exports. And before 5.7.3 cxinc (or Perl_cxinc)
was not exported. Therefore platforms like win32, VMS etc have problems
so we redefine it here -- GMB
*/
#if PERL_BCDVERSION < 0x5007000
/* Not in 5.6.1. */
# ifdef cxinc
# undef cxinc
# endif
# define cxinc() my_cxinc(aTHX)
static I32
my_cxinc(pTHX)
{
cxstack_max = cxstack_max * 3 / 2;
Renew(cxstack, cxstack_max + 1, struct context); /* fencepost bug in older CXINC macros requires +1 here */
return cxstack_ix + 1;
}
#endif
#ifndef sv_copypv
#define sv_copypv(a, b) my_sv_copypv(aTHX_ a, b)
static void
my_sv_copypv(pTHX_ SV *const dsv, SV *const ssv)
{
STRLEN len;
const char * const s = SvPV_const(ssv,len);
sv_setpvn(dsv,s,len);
if (SvUTF8(ssv))
SvUTF8_on(dsv);
else
SvUTF8_off(dsv);
}
#endif
#ifdef SVf_IVisUV
# define slu_sv_value(sv) (SvIOK(sv)) ? (SvIOK_UV(sv)) ? (NV)(SvUVX(sv)) : (NV)(SvIVX(sv)) : (SvNV(sv))
#else
# define slu_sv_value(sv) (SvIOK(sv)) ? (NV)(SvIVX(sv)) : (SvNV(sv))
#endif
MODULE=List::Util PACKAGE=List::Util
void
min(...)
PROTOTYPE: @
ALIAS:
min = 0
max = 1
CODE:
{
int index;
NV retval;
SV *retsv;
int magic;
if(!items) {
XSRETURN_UNDEF;
}
retsv = ST(0);
magic = SvAMAGIC(retsv);
if (!magic) {
retval = slu_sv_value(retsv);
}
for(index = 1 ; index < items ; index++) {
SV *stacksv = ST(index);
SV *tmpsv;
if ((magic || SvAMAGIC(stacksv)) && (tmpsv = amagic_call(retsv, stacksv, gt_amg, 0))) {
if (SvTRUE(tmpsv) ? !ix : ix) {
retsv = stacksv;
magic = SvAMAGIC(retsv);
if (!magic) {
retval = slu_sv_value(retsv);
}
}
}
else {
NV val = slu_sv_value(stacksv);
if (magic) {
retval = slu_sv_value(retsv);
magic = 0;
}
if(val < retval ? !ix : ix) {
retsv = stacksv;
retval = val;
}
}
}
ST(0) = retsv;
XSRETURN(1);
}
void
sum(...)
PROTOTYPE: @
CODE:
{
dXSTARG;
SV *sv;
SV *retsv = NULL;
int index;
NV retval = 0;
int magic;
if(!items) {
XSRETURN_UNDEF;
}
sv = ST(0);
magic = SvAMAGIC(sv);
if (magic) {
retsv = TARG;
sv_setsv(retsv, sv);
}
else {
retval = slu_sv_value(sv);
}
for(index = 1 ; index < items ; index++) {
sv = ST(index);
if(!magic && SvAMAGIC(sv)){
magic = TRUE;
if (!retsv)
retsv = TARG;
sv_setnv(retsv,retval);
}
if (magic) {
SV* const tmpsv = amagic_call(retsv, sv, add_amg, SvAMAGIC(retsv) ? AMGf_assign : 0);
if(tmpsv) {
magic = SvAMAGIC(tmpsv);
if (!magic) {
retval = slu_sv_value(tmpsv);
}
else {
retsv = tmpsv;
}
}
else {
/* fall back to default */
magic = FALSE;
retval = SvNV(retsv) + SvNV(sv);
}
}
else {
retval += slu_sv_value(sv);
}
}
if (!magic) {
if (!retsv)
retsv = TARG;
sv_setnv(retsv,retval);
}
ST(0) = retsv;
XSRETURN(1);
}
#define SLU_CMP_LARGER 1
#define SLU_CMP_SMALLER -1
void
minstr(...)
PROTOTYPE: @
ALIAS:
minstr = SLU_CMP_LARGER
maxstr = SLU_CMP_SMALLER
CODE:
{
SV *left;
int index;
if(!items) {
XSRETURN_UNDEF;
}
left = ST(0);
#ifdef OPpLOCALE
if(MAXARG & OPpLOCALE) {
for(index = 1 ; index < items ; index++) {
SV *right = ST(index);
if(sv_cmp_locale(left, right) == ix)
left = right;
}
}
else {
#endif
for(index = 1 ; index < items ; index++) {
SV *right = ST(index);
if(sv_cmp(left, right) == ix)
left = right;
}
#ifdef OPpLOCALE
}
#endif
ST(0) = left;
XSRETURN(1);
}
#ifdef dMULTICALL
void
reduce(block,...)
SV * block
PROTOTYPE: &@
CODE:
{
SV *ret = sv_newmortal();
int index;
GV *agv,*bgv,*gv;
HV *stash;
SV **args = &PL_stack_base[ax];
CV* cv = sv_2cv(block, &stash, &gv, 0);
if (cv == Nullcv) {
croak("Not a subroutine reference");
}
if(items <= 1) {
XSRETURN_UNDEF;
}
agv = gv_fetchpv("a", GV_ADD, SVt_PV);
bgv = gv_fetchpv("b", GV_ADD, SVt_PV);
SAVESPTR(GvSV(agv));
SAVESPTR(GvSV(bgv));
GvSV(agv) = ret;
SvSetSV(ret, args[1]);
if(!CvISXSUB(cv)) {
dMULTICALL;
I32 gimme = G_SCALAR;
PUSH_MULTICALL(cv);
for(index = 2 ; index < items ; index++) {
GvSV(bgv) = args[index];
MULTICALL;
SvSetSV(ret, *PL_stack_sp);
}
POP_MULTICALL;
}
else {
for(index = 2 ; index < items ; index++) {
dSP;
GvSV(bgv) = args[index];
PUSHMARK(SP);
call_sv((SV*)cv, G_SCALAR);
SvSetSV(ret, *PL_stack_sp);
}
}
ST(0) = ret;
XSRETURN(1);
}
void
first(block,...)
SV * block
PROTOTYPE: &@
CODE:
{
int index;
GV *gv;
HV *stash;
SV **args = &PL_stack_base[ax];
CV *cv = sv_2cv(block, &stash, &gv, 0);
if (cv == Nullcv) {
croak("Not a subroutine reference");
}
if(items <= 1) {
XSRETURN_UNDEF;
}
SAVESPTR(GvSV(PL_defgv));
if(!CvISXSUB(cv)) {
dMULTICALL;
I32 gimme = G_SCALAR;
PUSH_MULTICALL(cv);
for(index = 1 ; index < items ; index++) {
GvSV(PL_defgv) = args[index];
MULTICALL;
if (SvTRUEx(*PL_stack_sp)) {
POP_MULTICALL;
ST(0) = ST(index);
XSRETURN(1);
}
}
POP_MULTICALL;
}
else {
for(index = 1 ; index < items ; index++) {
dSP;
GvSV(PL_defgv) = args[index];
PUSHMARK(SP);
call_sv((SV*)cv, G_SCALAR);
if (SvTRUEx(*PL_stack_sp)) {
ST(0) = ST(index);
XSRETURN(1);
}
}
}
XSRETURN_UNDEF;
}
#endif
void
shuffle(...)
PROTOTYPE: @
CODE:
{
int index;
#if (PERL_VERSION < 9)
struct op dmy_op;
struct op *old_op = PL_op;
/* We call pp_rand here so that Drand01 get initialized if rand()
or srand() has not already been called
*/
memzero((char*)(&dmy_op), sizeof(struct op));
/* we let pp_rand() borrow the TARG allocated for this XS sub */
dmy_op.op_targ = PL_op->op_targ;
PL_op = &dmy_op;
(void)*(PL_ppaddr[OP_RAND])(aTHX);
PL_op = old_op;
#else
/* Initialize Drand01 if rand() or srand() has
not already been called
*/
if (!PL_srand_called) {
(void)seedDrand01((Rand_seed_t)Perl_seed(aTHX));
PL_srand_called = TRUE;
}
#endif
for (index = items ; index > 1 ; ) {
int swap = (int)(Drand01() * (double)(index--));
SV *tmp = ST(swap);
ST(swap) = ST(index);
ST(index) = tmp;
}
XSRETURN(items);
}
MODULE=List::Util PACKAGE=Scalar::Util
void
dualvar(num,str)
SV * num
SV * str
PROTOTYPE: $$
CODE:
{
dXSTARG;
(void)SvUPGRADE(TARG, SVt_PVNV);
sv_copypv(TARG,str);
if(SvNOK(num) || SvPOK(num) || SvMAGICAL(num)) {
SvNV_set(TARG, SvNV(num));
SvNOK_on(TARG);
}
#ifdef SVf_IVisUV
else if (SvUOK(num)) {
SvUV_set(TARG, SvUV(num));
SvIOK_on(TARG);
SvIsUV_on(TARG);
}
#endif
else {
SvIV_set(TARG, SvIV(num));
SvIOK_on(TARG);
}
if(PL_tainting && (SvTAINTED(num) || SvTAINTED(str)))
SvTAINTED_on(TARG);
ST(0) = TARG;
XSRETURN(1);
}
char *
blessed(sv)
SV * sv
PROTOTYPE: $
CODE:
{
SvGETMAGIC(sv);
if(!(SvROK(sv) && SvOBJECT(SvRV(sv)))) {
XSRETURN_UNDEF;
}
RETVAL = (char*)sv_reftype(SvRV(sv),TRUE);
}
OUTPUT:
RETVAL
char *
reftype(sv)
SV * sv
PROTOTYPE: $
CODE:
{
SvGETMAGIC(sv);
if(!SvROK(sv)) {
XSRETURN_UNDEF;
}
RETVAL = (char*)sv_reftype(SvRV(sv),FALSE);
}
OUTPUT:
RETVAL
UV
refaddr(sv)
SV * sv
PROTOTYPE: $
CODE:
{
SvGETMAGIC(sv);
if(!SvROK(sv)) {
XSRETURN_UNDEF;
}
RETVAL = PTR2UV(SvRV(sv));
}
OUTPUT:
RETVAL
void
weaken(sv)
SV *sv
PROTOTYPE: $
CODE:
#ifdef SvWEAKREF
sv_rvweaken(sv);
#else
croak("weak references are not implemented in this release of perl");
#endif
void
isweak(sv)
SV *sv
PROTOTYPE: $
CODE:
#ifdef SvWEAKREF
ST(0) = boolSV(SvROK(sv) && SvWEAKREF(sv));
XSRETURN(1);
#else
croak("weak references are not implemented in this release of perl");
#endif
int
readonly(sv)
SV *sv
PROTOTYPE: $
CODE:
SvGETMAGIC(sv);
RETVAL = SvREADONLY(sv);
OUTPUT:
RETVAL
int
tainted(sv)
SV *sv
PROTOTYPE: $
CODE:
SvGETMAGIC(sv);
RETVAL = SvTAINTED(sv);
OUTPUT:
RETVAL
void
isvstring(sv)
SV *sv
PROTOTYPE: $
CODE:
#ifdef SvVOK
SvGETMAGIC(sv);
ST(0) = boolSV(SvVOK(sv));
XSRETURN(1);
#else
croak("vstrings are not implemented in this release of perl");
#endif
int
looks_like_number(sv)
SV *sv
PROTOTYPE: $
CODE:
SV *tempsv;
SvGETMAGIC(sv);
if (SvAMAGIC(sv) && (tempsv = AMG_CALLun(sv, numer))) {
sv = tempsv;
}
#if PERL_BCDVERSION < 0x5008005
if (SvPOK(sv) || SvPOKp(sv)) {
RETVAL = looks_like_number(sv);
}
else {
RETVAL = SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK);
}
#else
RETVAL = looks_like_number(sv);
#endif
OUTPUT:
RETVAL
void
set_prototype(subref, proto)
SV *subref
SV *proto
PROTOTYPE: &$
CODE:
{
if (SvROK(subref)) {
SV *sv = SvRV(subref);
if (SvTYPE(sv) != SVt_PVCV) {
/* not a subroutine reference */
croak("set_prototype: not a subroutine reference");
}
if (SvPOK(proto)) {
/* set the prototype */
sv_copypv(sv, proto);
}
else {
/* delete the prototype */
SvPOK_off(sv);
}
}
else {
croak("set_prototype: not a reference");
}
XSRETURN(1);
}
void
openhandle(SV* sv)
PROTOTYPE: $
CODE:
{
IO* io = NULL;
SvGETMAGIC(sv);
if(SvROK(sv)){
/* deref first */
sv = SvRV(sv);
}
/* must be GLOB or IO */
if(isGV(sv)){
io = GvIO((GV*)sv);
}
else if(SvTYPE(sv) == SVt_PVIO){
io = (IO*)sv;
}
if(io){
/* real or tied filehandle? */
if(IoIFP(io) || SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)){
XSRETURN(1);
}
}
XSRETURN_UNDEF;
}
BOOT:
{
HV *lu_stash = gv_stashpvn("List::Util", 10, TRUE);
GV *rmcgv = *(GV**)hv_fetch(lu_stash, "REAL_MULTICALL", 14, TRUE);
SV *rmcsv;
#if !defined(SvWEAKREF) || !defined(SvVOK)
HV *su_stash = gv_stashpvn("Scalar::Util", 12, TRUE);
GV *vargv = *(GV**)hv_fetch(su_stash, "EXPORT_FAIL", 11, TRUE);
AV *varav;
if (SvTYPE(vargv) != SVt_PVGV)
gv_init(vargv, su_stash, "Scalar::Util", 12, TRUE);
varav = GvAVn(vargv);
#endif
if (SvTYPE(rmcgv) != SVt_PVGV)
gv_init(rmcgv, lu_stash, "List::Util", 10, TRUE);
rmcsv = GvSVn(rmcgv);
#ifndef SvWEAKREF
av_push(varav, newSVpv("weaken",6));
av_push(varav, newSVpv("isweak",6));
#endif
#ifndef SvVOK
av_push(varav, newSVpv("isvstring",9));
#endif
#ifdef REAL_MULTICALL
sv_setsv(rmcsv, &PL_sv_yes);
#else
sv_setsv(rmcsv, &PL_sv_no);
#endif
}
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