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xo-reader2: + pretty-printing for ParserResult + use in utest

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This commit is contained in:
Roland Conybeare 2026-01-20 12:40:26 -05:00
commit 3bdbb61eba
3 changed files with 121 additions and 1 deletions
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66
src/reader2/ParserResult.cpp
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@ -4,9 +4,28 @@
**/
#include "ParserResult.hpp"
#include <xo/printable2/Printable.hpp>
#include <xo/facet/FacetRegistry.hpp>
namespace xo {
using xo::print::APrintable;
using xo::facet::FacetRegistry;
namespace scm {
const char *
parser_result_type_descr(parser_result_type x)
{
switch (x) {
case parser_result_type::none: return "none";
case parser_result_type::expression: return "expression";
case parser_result_type::error: return "error";
case parser_result_type::N: break;
}
return "parser_result_type?";
}
ParserResult::ParserResult(parser_result_type type,
obj<AExpression> expr,
std::string_view error_src_fn,
@ -26,6 +45,53 @@ namespace xo {
ssm_name,
errmsg);
}
void
ParserResult::print(std::ostream & os) const
{
os << "<ParserResult" ;
os << xtag("type", result_type_);
os << xtag("expr", result_expr_);
os << xtag("src_fn", error_src_fn_);
if (error_description_)
os << xtag("error", error_description_);
os << ">";
}
bool
ParserResult::pretty(const ppindentinfo & ppii) const
{
switch (result_type_) {
case parser_result_type::none:
return ppii.pps()->pretty_struct
(ppii,
"ParserResult",
refrtag("type", result_type_));
case parser_result_type::expression:
{
auto expr = FacetRegistry::instance().variant<APrintable,AExpression>(result_expr_);
return ppii.pps()->pretty_struct
(ppii,
"ParserResult",
refrtag("type", result_type_),
refrtag("expr", expr));
}
break;
case parser_result_type::error:
return ppii.pps()->pretty_struct
(ppii,
"ParserResult",
refrtag("type", result_type_),
refrtag("src_fn", error_src_fn_),
refrtag("error", error_description_));
case parser_result_type::N:
assert(false);
break;
}
return false;
}
} /*namespace scm*/
} /*namespace xo*/