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/* You may distribute under the terms of either the GNU General Public License
* or the Artistic License (the same terms as Perl itself)
*
* (C) Paul Evans, 2020-2023 -- leonerd@leonerd.org.uk
*/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "XSParseSublike.h"
#if PERL_REVISION > 5 || (PERL_REVISION == 5 && PERL_VERSION >= 26)
# define HAVE_SUB_PARAM_ATTRIBUTES
#endif
static const struct XSParseSublikeHooks parse_func_hooks = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/func",
.flags = XS_PARSE_SUBLIKE_FLAG_ALLOW_PKGNAME,
};
static const struct XSParseSublikeHooks parse_nfunc_hooks = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/nfunc",
.flags = XS_PARSE_SUBLIKE_FLAG_SIGNATURE_NAMED_PARAMS,
};
static const struct XSParseSublikeHooks parse_afunc_hooks = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/afunc",
.flags = XS_PARSE_SUBLIKE_FLAG_SIGNATURE_PARAM_ATTRIBUTES,
};
static const struct XSParseSublikeHooks parse_nafunc_hooks = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/nafunc",
.flags = XS_PARSE_SUBLIKE_FLAG_SIGNATURE_NAMED_PARAMS|XS_PARSE_SUBLIKE_FLAG_SIGNATURE_PARAM_ATTRIBUTES,
};
static const struct XSParseSublikeHooks parse_nopkgfunc_hooks = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/func",
};
#ifdef HAVE_SUB_PARAM_ATTRIBUTES
static void apply_Attribute(pTHX_ struct XPSSignatureParamContext *ctx, SV *attrvalue, void **attrdata_ptr, void *funcdata)
{
/* TODO: maybe the context should store a lexname string? */
PADNAME *pn = PadnamelistARRAY(PL_comppad_name)[ctx->padix];
AV *av = get_av("main::ATTRIBUTE_APPLIED", GV_ADD);
av_push(av, newSVpvf("%s%" SVf,
ctx->is_named ? ":" : "", PadnameSV(pn)));
av_push(av, newSVsv(attrvalue));
}
static void post_defop_Attribute(pTHX_ struct XPSSignatureParamContext *ctx, void *attrdata, void *funcdata)
{
/* OP* pointer values won't mean much to pureperl code, but we can at least
* store UVs and assert them not zero
*/
HV *n = newHV();
hv_stores(n, "op", newSVuv(PTR2UV(ctx->op)));
hv_stores(n, "varop", newSVuv(PTR2UV(ctx->varop)));
hv_stores(n, "defop", newSVuv(PTR2UV(ctx->defop)));
AV *av = get_av("main::ATTRIBUTE_SAW_OPTREES", GV_ADD);
av_push(av, newRV_noinc((SV *)n));
/* Give the attribute a runtime side-effect so we can test that our returned
* optree is invoked
*/
GV *countergv = gv_fetchpvs("main::ATTRIBUTE_INVOKED", GV_ADD, SVt_IV);
OP *incop = newUNOP(OP_PREINC, 0,
newUNOP(OP_RV2SV, 0,
newGVOP(OP_GV, 0, (GV *)SvREFCNT_inc(countergv))));
ctx->op = op_append_elem(OP_LINESEQ, ctx->op, incop);
}
static const struct XPSSignatureAttributeFuncs attr_funcs = {
.ver = XSPARSESUBLIKE_ABI_VERSION,
.permit_hintkey = "t::func/Attribute",
.apply = apply_Attribute,
.post_defop = post_defop_Attribute,
};
#endif
MODULE = t::func PACKAGE = t::func
BOOT:
boot_xs_parse_sublike(0);
register_xs_parse_sublike("func", &parse_func_hooks, NULL);
register_xs_parse_sublike("nfunc", &parse_nfunc_hooks, NULL);
register_xs_parse_sublike("afunc", &parse_afunc_hooks, NULL);
register_xs_parse_sublike("nafunc", &parse_nafunc_hooks, NULL);
register_xs_parse_sublike("nopkgfunc", &parse_nopkgfunc_hooks, NULL);
#ifdef HAVE_SUB_PARAM_ATTRIBUTES
register_xps_signature_attribute("Attribute", &attr_funcs, NULL);
#endif
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