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xo-reader2: + SyntaxStateMachine.forward_children method

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Support gc traversal with goal of making ParserStateMachine a gc root
This commit is contained in:
Roland Conybeare 2026-03-24 17:43:45 -04:00
commit 3af72fec64
91 changed files with 626 additions and 39 deletions
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8
include/xo/reader2/DExpectExprSsm.hpp
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@ -18,6 +18,7 @@ namespace xo {
public:
using Super = DSyntaxStateMachine<DExpectExprSsm>;
using TypeDescr = xo::reflect::TypeDescr;
using ACollector = xo::mm::ACollector;
using DArena = xo::mm::DArena;
using ppindentinfo = xo::print::ppindentinfo;
@ -190,6 +191,13 @@ namespace xo {
bool pretty(const ppindentinfo & ppii) const;
///@}
/** @defgroup scm-expectexprssm-gc-support gc support methods **/
///@{
/** gc support: visit gc-aware child pointers **/
void forward_children(obj<ACollector> gc) noexcept;
///@}
private:
/** if true: allow a define-expression here; otherwise reject **/