88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/* @file pretty_refcnt.hpp
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*
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* author: Roland Conybeare, Jul 2025
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*
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* Transitional compatibility header: legacy xo-indentlog ppdetail<>
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* specializations for rp<T> / bp<T> / Refcount*.
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*
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* These are FORWARDERS -- ppdetail<rp<T>> delegates to ppdetail<T>, so they
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* cannot migrate to ppsink until the element types T do. That is why
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* xo-refcnt still ships legacy printing at all.
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*
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* NB: xo-refcnt no longer declares an xo-indentlog dependency, so a consumer
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* that includes this header must declare one itself.
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*/
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#pragma once
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#include "Refcounted.hpp"
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#include <xo/indentlog/print/pretty.hpp>
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namespace xo {
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namespace print {
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#ifndef ppdetail_atomic
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template <>
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struct ppdetail<xo::ref::Refcount *> {
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static bool print_pretty(const ppindentinfo & ppii, const xo::ref::Refcount * x) {
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return ppdetail_atomic<const xo::ref::Refcount *>::print_pretty(ppii, x);
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}
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};
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#endif
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template <typename T>
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struct ppdetail<rp<T>> {
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static bool print_pretty(const ppindentinfo & ppii, const rp<T> & x) {
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if (ppii.upto()) {
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if (auto p = x.get()) {
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return ppdetail<T>::print_pretty(ppii, *p);
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} else {
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/* note: degenerate case here, since never write newline for nullptr */
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ppii.pps()->write("<nullptr ");
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ppii.pps()->write(reflect::type_name<T>());
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ppii.pps()->write(">");
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return ppii.pps()->has_margin();
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}
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} else {
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if (auto p = x.get()) {
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ppdetail<T>::print_pretty(ppii, *p);
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} else {
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ppii.pps()->write("<nullptr ");
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ppii.pps()->write(reflect::type_name<T>());
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ppii.pps()->write(">");
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}
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return false;
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}
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}
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};
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template <typename T>
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struct ppdetail<bp<T>> {
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static bool print_pretty(const ppindentinfo & ppii, const bp<T> & x) {
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if (ppii.upto()) {
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if (auto p = x.get()) {
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return ppdetail<T>::print_pretty(ppii, *p);
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} else {
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/* note: degenerate case here, since never write newline for nullptr */
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ppii.pps()->write("<nullptr ");
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ppii.pps()->write(reflect::type_name<T>());
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ppii.pps()->write(">");
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return ppii.pps()->has_margin();
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}
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} else {
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if (auto p = x.get()) {
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ppdetail<T>::print_pretty(ppii, *p);
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} else {
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ppii.pps()->write("<nullptr ");
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ppii.pps()->write(reflect::type_name<T>());
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ppii.pps()->write(">");
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}
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return false;
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}
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}
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};
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}
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}
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