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57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
// Copyright (c) 2018-2025 Jean-Louis Leroy
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// Distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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//[ all
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#include <boost/openmethod/default_registry.hpp>
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#include <boost/openmethod/policies/static_rtti.hpp>
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struct static_registry
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: boost::openmethod::registry<boost::openmethod::policies::static_rtti> {};
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#define BOOST_OPENMETHOD_DEFAULT_REGISTRY static_registry
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#include <boost/openmethod.hpp>
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#include <boost/openmethod/interop/std_unique_ptr.hpp>
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#include <boost/openmethod/initialize.hpp>
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#include <iostream>
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struct Animal {};
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struct Dog : Animal {};
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struct Cat : Animal {};
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using namespace boost::openmethod::aliases;
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BOOST_OPENMETHOD_CLASSES(Animal, Dog, Cat);
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BOOST_OPENMETHOD(poke, (virtual_ptr<Animal>, std::ostream&), void);
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BOOST_OPENMETHOD_OVERRIDE(
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poke, (virtual_ptr<Dog> dog, std::ostream& os), void) {
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os << "bark\n";
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}
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BOOST_OPENMETHOD_OVERRIDE(
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poke, (virtual_ptr<Cat> cat, std::ostream& os), void) {
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os << "hiss\n";
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}
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int main() {
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boost::openmethod::initialize();
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unique_virtual_ptr<Animal> a = make_unique_virtual<Cat>(),
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b = make_unique_virtual<Dog>();
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poke(a, std::cout); // hiss
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poke(b, std::cout); // bark
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return 0;
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}
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//]
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