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45 lines
724 B
C++
45 lines
724 B
C++
#ifndef SMART_PTR_H
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#define SMART_PTR_H
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#include <memory>
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#include <boost/shared_ptr.hpp>
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namespace smart_ptr {
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struct C
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{
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int value;
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};
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inline boost::shared_ptr<C> NewC() { return boost::shared_ptr<C>( new C() ); }
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struct D
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{
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boost::shared_ptr<C> Get() { return ptr; }
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void Set( boost::shared_ptr<C> c ) { ptr = c; }
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private:
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boost::shared_ptr<C> ptr;
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};
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inline std::auto_ptr<D> NewD() { return std::auto_ptr<D>( new D() ); }
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// test an abstract class
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struct A
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{
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virtual int f() = 0;
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};
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struct B: A
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{
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virtual int f(){ return 1; }
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};
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inline boost::shared_ptr<A> NewA() { return boost::shared_ptr<A>(new B()); }
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inline int GetA(boost::shared_ptr<A> a) { return a->f(); }
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}
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#endif
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