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57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*++
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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ptr_scoped_buffer.h
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Abstract:
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<abstract>
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Author:
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Leonardo de Moura (leonardo) 2011-03-03.
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Revision History:
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--*/
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#ifndef _PTR_SCOPED_BUFFER_H_
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#define _PTR_SCOPED_BUFFER_H_
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#include"util.h"
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#include"debug.h"
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#include"buffer.h"
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template<typename T, unsigned INITIAL_SIZE=16, typename D = delete_proc<T> >
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class ptr_scoped_buffer : private ptr_buffer<T, INITIAL_SIZE> {
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D m_deallocator;
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void deallocate_all() {
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typename ptr_buffer<T, INITIAL_SIZE>::iterator it = ptr_buffer<T, INITIAL_SIZE>::begin();
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typename ptr_buffer<T, INITIAL_SIZE>::iterator end = ptr_buffer<T, INITIAL_SIZE>::end();
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for (; it != end; ++it)
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m_deallocator(*it);
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}
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public:
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typedef typename ptr_buffer<T, INITIAL_SIZE>::const_iterator const_iterator;
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ptr_scoped_buffer(D const & m = D()):ptr_buffer<T, INITIAL_SIZE>(), m_deallocator(m) {}
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~ptr_scoped_buffer() { deallocate_all(); }
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void reset() { deallocate_all(); ptr_buffer<T, INITIAL_SIZE>::reset(); }
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void finalize() { deallocate_all(); ptr_buffer<T, INITIAL_SIZE>::finalize(); }
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/** \brief Release ownership of the pointers stored in the buffer */
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void release() { ptr_buffer<T, INITIAL_SIZE>::reset(); }
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unsigned size() const { return ptr_buffer<T, INITIAL_SIZE>::size(); }
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bool empty() const { return ptr_buffer<T, INITIAL_SIZE>::empty(); }
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const_iterator begin() const { return ptr_buffer<T, INITIAL_SIZE>::begin(); }
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const_iterator end() const { return ptr_buffer<T, INITIAL_SIZE>::end(); }
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void push_back(T * elem) { return ptr_buffer<T, INITIAL_SIZE>::push_back(elem); }
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T * back() const { return ptr_buffer<T, INITIAL_SIZE>::back(); }
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void pop_back() { m_deallocator(back()); ptr_buffer<T, INITIAL_SIZE>::pop_back(); }
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T * get(unsigned idx) const { return ptr_buffer<T, INITIAL_SIZE>::get(idx); }
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void set(unsigned idx, T * e) { T * old_e = get(idx); if (e != old_e) m_deallocator(old_e); ptr_buffer<T, INITIAL_SIZE>::set(idx, e); }
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void append(unsigned n, T * const * elems) { ptr_buffer<T, INITIAL_SIZE>::append(n, elems); }
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};
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#endif
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