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root |
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#ifndef SCHMORP_PERL_H_ |
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#define SCHMORP_PERL_H_ |
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/* useful stuff, used by schmorp mostly */ |
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#define PERL_VERSION_ATLEAST(a,b,c) \ |
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(PERL_REVISION > (a) \ |
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|| (PERL_REVISION == (a) \ |
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&& (PERL_VERSION > (b) \ |
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|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
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#if !PERL_VERSION_ATLEAST (5,6,0) |
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# ifndef PL_ppaddr |
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# define PL_ppaddr ppaddr |
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# endif |
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# ifndef call_sv |
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# define call_sv perl_call_sv |
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# endif |
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# ifndef get_sv |
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# define get_sv perl_get_sv |
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# endif |
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# ifndef get_cv |
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# define get_cv perl_get_cv |
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# endif |
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# ifndef IS_PADGV |
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# define IS_PADGV(v) 0 |
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# endif |
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# ifndef IS_PADCONST |
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# define IS_PADCONST(v) 0 |
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# endif |
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#endif |
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/* 5.11 */ |
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#ifndef CxHASARGS |
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# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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#endif |
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/* 5.10.0 */ |
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#ifndef SvREFCNT_inc_NN |
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# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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#endif |
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/* 5.8.8 */ |
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#ifndef GV_NOTQUAL |
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# define GV_NOTQUAL 0 |
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#endif |
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#ifndef newSV |
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# define newSV(l) NEWSV(0,l) |
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#endif |
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#ifndef CvISXSUB_on |
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# define CvISXSUB_on(cv) (void)cv |
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#endif |
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#ifndef CvISXSUB |
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# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
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#endif |
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#ifndef Newx |
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# define Newx(ptr,nitems,type) New (0,ptr,nitems,type) |
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#endif |
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/* 5.8.7 */ |
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#ifndef SvRV_set |
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# define SvRV_set(s,v) SvRV(s) = (v) |
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#endif |
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static int |
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s_signum (SV *sig) |
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{ |
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#ifndef SIG_SIZE |
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/* kudos to Slaven Rezic for the idea */ |
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static char sig_size [] = { SIG_NUM }; |
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# define SIG_SIZE (sizeof (sig_size) + 1) |
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#endif |
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int signum; |
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SvGETMAGIC (sig); |
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for (signum = 1; signum < SIG_SIZE; ++signum) |
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if (strEQ (SvPV_nolen (sig), PL_sig_name [signum])) |
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return signum; |
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signum = SvIV (sig); |
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if (signum > 0 && signum < SIG_SIZE) |
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return signum; |
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return -1; |
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} |
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static int |
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s_signum_croak (SV *sig) |
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{ |
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int signum = s_signum (sig); |
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if (signum < 0) |
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croak ("%s: invalid signal name or number", SvPV_nolen (sig)); |
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return signum; |
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} |
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static int |
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s_fileno (SV *fh, int wr) |
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{ |
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SvGETMAGIC (fh); |
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if (SvROK (fh)) |
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{ |
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fh = SvRV (fh); |
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SvGETMAGIC (fh); |
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} |
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if (SvTYPE (fh) == SVt_PVGV) |
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return PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh))); |
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if (SvOK (fh) && (SvIV (fh) >= 0) && (SvIV (fh) < 0x7fffffffL)) |
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return SvIV (fh); |
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return -1; |
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} |
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static int |
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s_fileno_croak (SV *fh, int wr) |
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{ |
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int fd = s_fileno (fh, wr); |
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if (fd < 0) |
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croak ("%s: illegal fh argument, either not an OS file or read/write mode mismatch", SvPV_nolen (fh)); |
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return fd; |
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} |
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static SV * |
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s_get_cv (SV *cb_sv) |
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{ |
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HV *st; |
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GV *gvp; |
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CV *cv = sv_2cv (cb_sv, &st, &gvp, 0); |
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return (SV *)cv; |
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} |
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static SV * |
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s_get_cv_croak (SV *cb_sv) |
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{ |
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cb_sv = s_get_cv (cb_sv); |
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if (!cb_sv) |
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croak ("%s: callback must be a CODE reference or another callable object", SvPV_nolen (cb_sv)); |
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return cb_sv; |
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} |
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/*****************************************************************************/ |
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/* gensub: simple closure generation utility */ |
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#define S_GENSUB_ARG CvXSUBANY (cv).any_ptr |
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/* create a closure from XS, returns a code reference */ |
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/* the arg can be accessed via GENSUB_ARG from the callback */ |
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/* the callback must use dXSARGS/XSRETURN */ |
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static SV * |
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s_gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
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{ |
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CV *cv = (CV *)newSV (0); |
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sv_upgrade ((SV *)cv, SVt_PVCV); |
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CvANON_on (cv); |
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CvISXSUB_on (cv); |
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CvXSUB (cv) = xsub; |
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S_GENSUB_ARG = arg; |
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return newRV_noinc ((SV *)cv); |
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} |
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#endif |
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