/*    inline.h
 *
 *    Copyright (C) 2012 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.
 *
 * This file is a home for static inline functions that cannot go in other
 * headers files, because they depend on proto.h (included after most other
 * headers) or struct definitions.
 *
 * Each section names the header file that the functions "belong" to.
 */

/* ------------------------------- cv.h ------------------------------- */

PERL_STATIC_INLINE I32 *
S_CvDEPTHp(const CV * const sv)
{
    assert(SvTYPE(sv) == SVt_PVCV || SvTYPE(sv) == SVt_PVFM);
    return &((XPVCV*)SvANY(sv))->xcv_depth;
}

/* ----------------------------- regexp.h ----------------------------- */

PERL_STATIC_INLINE struct regexp *
S_ReANY(const REGEXP * const re)
{
    assert(isREGEXP(re));
    return re->sv_u.svu_rx;
}

/* ------------------------------- sv.h ------------------------------- */

PERL_STATIC_INLINE SV *
S_SvREFCNT_inc(SV *sv)
{
    if (sv)
	SvREFCNT(sv)++;
    return sv;
}
PERL_STATIC_INLINE SV *
S_SvREFCNT_inc_NN(SV *sv)
{
    SvREFCNT(sv)++;
    return sv;
}
PERL_STATIC_INLINE void
S_SvREFCNT_inc_void(SV *sv)
{
    if (sv)
	SvREFCNT(sv)++;
}
PERL_STATIC_INLINE void
S_SvREFCNT_dec(pTHX_ SV *sv)
{
    if (sv) {
	if (SvREFCNT(sv)) {
	    if (--(SvREFCNT(sv)) == 0)
		Perl_sv_free2(aTHX_ sv);
	} else {
	    sv_free(sv);
	}
    }
}

PERL_STATIC_INLINE void
SvAMAGIC_on(SV *sv)
{
    assert(SvROK(sv));
    if (SvOBJECT(SvRV(sv))) HvAMAGIC_on(SvSTASH(SvRV(sv)));
}
PERL_STATIC_INLINE void
SvAMAGIC_off(SV *sv)
{
    if (SvROK(sv) && SvOBJECT(SvRV(sv)))
	HvAMAGIC_off(SvSTASH(SvRV(sv)));
}

PERL_STATIC_INLINE U32
S_SvPADTMP_on(SV *sv)
{
    assert(!(SvFLAGS(sv) & SVs_PADMY));
    return SvFLAGS(sv) |= SVs_PADTMP;
}
PERL_STATIC_INLINE U32
S_SvPADTMP_off(SV *sv)
{
    assert(!(SvFLAGS(sv) & SVs_PADMY));
    return SvFLAGS(sv) &= ~SVs_PADTMP;
}
PERL_STATIC_INLINE U32
S_SvPADSTALE_on(SV *sv)
{
    assert(SvFLAGS(sv) & SVs_PADMY);
    return SvFLAGS(sv) |= SVs_PADSTALE;
}
PERL_STATIC_INLINE U32
S_SvPADSTALE_off(SV *sv)
{
    assert(SvFLAGS(sv) & SVs_PADMY);
    return SvFLAGS(sv) &= ~SVs_PADSTALE;
}
#ifdef PERL_CORE
PERL_STATIC_INLINE STRLEN
S_sv_or_pv_pos_u2b(pTHX_ SV *sv, const char *pv, STRLEN pos, STRLEN *lenp)
{
    if (SvGAMAGIC(sv)) {
	U8 *hopped = utf8_hop((U8 *)pv, pos);
	if (lenp) *lenp = (STRLEN)(utf8_hop(hopped, *lenp) - hopped);
	return (STRLEN)(hopped - (U8 *)pv);
    }
    return sv_pos_u2b_flags(sv,pos,lenp,SV_CONST_RETURN);
}
#endif

/* ------------------------------- handy.h ------------------------------- */

/* saves machine code for a common noreturn idiom typically used in Newx*() */
static void
S_croak_memory_wrap(void)
{
    Perl_croak_nocontext("%s",PL_memory_wrap);
}