100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/** \file
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* Simple uncopyable buffer class.
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*/
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/*
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* Copyright © 2004, Michael Geddes, Lijun Qin.
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*
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* This material is provided "as is", with absolutely no warranty
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* expressed or implied. Any use is at your own risk. Permission to
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* use or copy this software for any purpose is hereby granted without
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* fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is
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* granted, provided the above notices are retained, and a notice that
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* the code was modified is included with the above copyright notice.
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*
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* This header is part of Comet version 2.
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* https://github.com/alamaison/comet
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*/
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#ifndef INCLUDE_COMET_AUTO_BUFFER_H
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#define INCLUDE_COMET_AUTO_BUFFER_H
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#ifdef _SHOW_INC
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#pragma message(" #Include " __FILE__)
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#endif
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namespace comet
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{
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/*!\addtogroup Misc
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*/
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//@{
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/** \class auto_buffer_t auto_buffer.h comet/auto_buffer.h
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* Simle auto-deleting buffer class.
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* Non-copyable /returnable.
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*/
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template <typename T>
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class auto_buffer_t
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{
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public:
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typedef size_t size_type;
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/** Create a buffer of the given size.
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* This is the only valid constructor.
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*/
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explicit auto_buffer_t(size_type size)
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{
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begin_ = new T[size];
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}
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/// Auto-delete the buffer.
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~auto_buffer_t() throw() { delete[] begin_; }
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/// Clear the buffer.
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void clear() throw()
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{
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delete[] begin_;
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begin_ = 0;
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}
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/// Is the buffer empty.
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bool empty() const throw()
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{
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return begin_ != NULL;
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}
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/// Resize the buffer.
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void resize( size_type newSize) throw()
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{
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delete[] begin_;
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begin_ = new T[newSize];
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}
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/// Return a reference to the specifed element.
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T & at( size_type t) throw() { return begin_[t]; }
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T & operator[]( size_type t) throw() { return begin_[t]; }
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/// Return a const reference to the specifed element.
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const T & at( size_type t) const throw() { return begin_[t]; }
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const T & operator[]( size_type t) const throw() { return begin_[t]; }
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/// Detatch the memory.
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T *detach()
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{
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T *val = begin_;
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begin_ = NULL;
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return val;
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}
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/// Return the memory.
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T *get() { return begin_; }
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const T *get()const { return begin_; }
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private:
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/// Can't assign.
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auto_buffer_t &operator=(const auto_buffer_t &);
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/// can't copy.
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auto_buffer_t(const auto_buffer_t&);
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/// Pointer to memory.
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T *begin_;
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};
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//@}
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}
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#endif /* INCLUDE_COMET_AUTO_BUFFER_H */
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