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xo-gc stack: fix mutation setup + xo-reader2 utest

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This commit is contained in:
Roland Conybeare 2026-05-07 23:44:32 -04:00
commit b64940fa0a
24 changed files with 478 additions and 48 deletions
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31
xo-alloc2/include/xo/alloc2/GCObjectConversion.hpp
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@ -13,13 +13,27 @@
namespace xo {
namespace scm {
class GCObjectConversionUtil {
public:
using AGCObject = xo::mm::AGCObject;
using typeseq = xo::reflect::typeseq;
/** helper method fro GCObjectConversion<..>::from_gco()
* on conversion failure
**/
static void _from_gco_fail_aux(obj<AGCObject> gco,
typeseq tseq,
scope * p_log);
};
/** @brief compile-time conversion obj<AGCObject> <-> T
*
* Specialize for each T that participates in conversion.
* Methods here aren't implemented
**/
template <typename T>
struct GCObjectConversion {
class GCObjectConversion {
public:
using AGCObject = xo::mm::AGCObject;
using AAllocator = xo::mm::AAllocator;
@ -73,6 +87,13 @@ namespace xo {
}
}
/** Several use cases here:
* 1. runtime polymorphism
* obj<AGCObject,DArray> v(DArray::make(..));
* // from_gco() doesn't know v repr
* auto gc = GCObjectConversion<ASequence,DArray>::from_gco(mm, v);
*
**/
static obj<AFacet,DRepr> from_gco(obj<AAllocator>,
obj<AGCObject> gco) {
scope log(XO_DEBUG(false));
@ -92,14 +113,10 @@ namespace xo {
auto retval = obj<AFacet,DRepr>::from(gco);
if (!retval) {
log.retroactively_enable();
log && log(xtag("gco.tseq", gco._typeseq()));
log && log(xtag("DRepr.tseq", reflect::typeseq::id<DRepr>()));
GCObjectConversionUtil::_from_gco_fail_aux
(gco, reflect::typeseq::id<DRepr>(), &log);
}
assert(retval);
return retval;
}
} else {