################################################################################
##
##  Version 3.x, Copyright (C) 2004-2013, Marcus Holland-Moritz.
##  Version 2.x, Copyright (C) 2001, Paul Marquess.
##  Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
##
##  This program is free software; you can redistribute it and/or
##  modify it under the same terms as Perl itself.
##
################################################################################

=provides

__UNDEFINED__
my_strnlen
SvUOK

=implementation

__UNDEFINED__  sv_setuv(sv, uv)                     \
               STMT_START {                         \
                 UV TeMpUv = uv;                    \
                 if (TeMpUv <= IV_MAX)              \
                   sv_setiv(sv, TeMpUv);            \
                 else                               \
                   sv_setnv(sv, (double)TeMpUv);    \
               } STMT_END

__UNDEFINED__  newSVuv(uv)     ((uv) <= IV_MAX ? newSViv((IV)uv) : newSVnv((NV)uv))

#if defined(PERL_USE_GCC_BRACE_GROUPS)
__UNDEFINED__  sv_2uv(sv)      ({ SV *_sv = (sv); (UV) (SvNOK(_sv) ? SvNV(_sv) : sv_2nv(_sv)); })
#else
__UNDEFINED__  sv_2uv(sv)      ((PL_Sv = (sv)), (UV) (SvNOK(PL_Sv) ? SvNV(PL_Sv) : sv_2nv(PL_Sv)))
#endif

__UNDEFINED__  SvUVX(sv)       ((UV)SvIVX(sv))
__UNDEFINED__  SvUVXx(sv)      SvUVX(sv)
__UNDEFINED__  SvUV(sv)        (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))

#if defined(PERL_USE_GCC_BRACE_GROUPS)
__UNDEFINED__  SvUVx(sv)       ({ SV *_sv = (sv)); SvUV(_sv); })
#else
__UNDEFINED__  SvUVx(sv)       ((PL_Sv = (sv)), SvUV(PL_Sv))
#endif

/* Hint: sv_uv
 * Always use the SvUVx() macro instead of sv_uv().
 */
/* Replace sv_uv with SvUVx */
__UNDEFINED__  sv_uv(sv)       SvUVx(sv)

#if !defined(SvUOK) && defined(SvIOK_UV)
#  define SvUOK(sv) SvIOK_UV(sv)
#endif

__UNDEFINED__  XST_mUV(i,v)    (ST(i) = sv_2mortal(newSVuv(v))  )
__UNDEFINED__  XSRETURN_UV(v)  STMT_START { XST_mUV(0,v);  XSRETURN(1); } STMT_END

__UNDEFINED__  PUSHu(u)        STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG;  } STMT_END
__UNDEFINED__  XPUSHu(u)       STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END

#if !defined(my_strnlen)
#if { NEED my_strnlen }

Size_t
my_strnlen(const char *str, Size_t maxlen)
{
    const char *p = str;

    while(maxlen-- && *p)
        p++;

    return p - str;
}

#endif
#endif

=xsinit

#define NEED_my_strnlen

=xsubs

SV *
sv_setuv(uv)
        UV uv
        CODE:
                RETVAL = newSViv(1);
                sv_setuv(RETVAL, uv);
        OUTPUT:
                RETVAL

SV *
newSVuv(uv)
        UV uv
        CODE:
                RETVAL = newSVuv(uv);
        OUTPUT:
                RETVAL

UV
sv_2uv(sv)
        SV *sv
        CODE:
                RETVAL = sv_2uv(sv);
        OUTPUT:
                RETVAL

UV
SvUVx(sv)
        SV *sv
        CODE:
                sv--;
                RETVAL = SvUVx(++sv);
        OUTPUT:
                RETVAL

void
XSRETURN_UV()
        PPCODE:
                XSRETURN_UV(42);

void
PUSHu()
        PREINIT:
                dTARG;
        PPCODE:
                TARG = sv_newmortal();
                EXTEND(SP, 1);
                PUSHu(42);
                XSRETURN(1);

void
XPUSHu()
        PREINIT:
                dTARG;
        PPCODE:
                TARG = sv_newmortal();
                XPUSHu(43);
                XSRETURN(1);

STRLEN
my_strnlen(s, max)
        char * s
        STRLEN max
        CODE:
            RETVAL= my_strnlen(s, max);
        OUTPUT:
            RETVAL

=tests plan => 11

BEGIN { require warnings if ivers($]) > ivers('5.006') }

is(&Devel::PPPort::sv_setuv(42), 42);
is(&Devel::PPPort::newSVuv(123), 123);
is(&Devel::PPPort::sv_2uv("4711"), 4711);
is(&Devel::PPPort::sv_2uv("1735928559"), 1735928559);
is(&Devel::PPPort::SvUVx("1735928559"), 1735928559);
is(&Devel::PPPort::SvUVx(1735928559), 1735928559);
is(&Devel::PPPort::SvUVx(0xdeadbeef), 0xdeadbeef);
is(&Devel::PPPort::XSRETURN_UV(), 42);
is(&Devel::PPPort::PUSHu(), 42);
is(&Devel::PPPort::XPUSHu(), 43);
is(&Devel::PPPort::my_strnlen("abc\0def", 7), 3);