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xo-reader2: + IPrintable+DExprSeqState

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Roland Conybeare 2026-01-20 00:57:34 -05:00
commit a836c72a72
7 changed files with 155 additions and 0 deletions
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15
include/xo/reader2/DExprSeqState.hpp
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@ -25,6 +25,13 @@ namespace xo {
N
};
const char * exprseqtype_descr(exprseqtype x);
inline std::ostream & operator<<(std::ostream & os, exprseqtype x) {
os << exprseqtype_descr(x);
return os;
}
/** @class DExprSeqState
* @brief state machine for parsing a sequence of expression
*
@ -33,6 +40,7 @@ namespace xo {
class DExprSeqState {
public:
using AAllocator = xo::mm::AAllocator;
using ppindentinfo = xo::print::ppindentinfo;
public:
explicit DExprSeqState(exprseqtype ty);
@ -78,6 +86,13 @@ namespace xo {
void on_parsed_symbol(std::string_view sym, ParserStateMachine * p_psm);
///@}
/** @defgroup scm-exprseq-printable-facet printable facet methods **/
///@{
/** pretty-printing driver; combine layout+printing **/
bool pretty(const ppindentinfo & ppii) const;
///@}
private:
/** sequence type. accept rvalue expressions when