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xo-reader2: bugfix: checkpoint before allocating SSMs

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This commit is contained in:
Roland Conybeare 2026-02-16 11:03:09 -05:00
commit 66d9bc5cd6
18 changed files with 78 additions and 36 deletions
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14
src/reader2/DParenSsm.cpp
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@ -40,7 +40,7 @@ namespace xo {
{}
DParenSsm *
DParenSsm::make(DArena & mm)
DParenSsm::_make(DArena & mm)
{
void * mem = mm.alloc(typeseq::id<DParenSsm>(),
sizeof(DParenSsm));
@ -48,14 +48,20 @@ namespace xo {
return new (mem) DParenSsm();
}
obj<ASyntaxStateMachine,DParenSsm>
DParenSsm::make(DArena & mm)
{
return obj<ASyntaxStateMachine,DParenSsm>(_make(mm));
}
void
DParenSsm::start(ParserStateMachine * p_psm)
{
DParenSsm * paren_ssm = DParenSsm::make(p_psm->parser_alloc());
DArena::Checkpoint ckp = p_psm->parser_alloc().checkpoint();
auto ssm = with_facet<ASyntaxStateMachine>::mkobj(paren_ssm);
auto paren_ssm = DParenSsm::make(p_psm->parser_alloc());
p_psm->push_ssm(ssm);
p_psm->push_ssm(ckp, paren_ssm);
}
syntaxstatetype