29 lines
757 B
C++
29 lines
757 B
C++
/* @file Displayable.hpp */
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#pragma once
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#include "refcnt/Refcounted.hpp"
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namespace xo {
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namespace ref {
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class Displayable : public Refcount {
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public:
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/* write some kind of human-readable representation on stream */
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virtual void display(std::ostream & os) const = 0;
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std::string display_string() const;
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}; /*Displayable*/
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/* see also
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* operator<<(std::ostream &, intrusive_ptr<T> const &)
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* in [Refcounted.hpp]
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*/
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inline std::ostream &
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operator<<(std::ostream &os, Displayable const & x) {
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x.display(os);
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return os;
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} /*operator<<*/
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} /*namespace ref*/
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} /*namespace xo*/
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/* end Displayable.hpp */
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