external/bsd/kyua-cli/dist/utils/auto_array.hpp

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  28
  29 /// \file utils/auto_array.hpp
  30 /// Provides the utils::auto_array class.
  31 ///
  32 /// The class is provided as a separate module on its own to minimize
  33 /// header-inclusion side-effects.
  34
  35 #if !defined(UTILS_AUTO_ARRAY_HPP)
  36 #define UTILS_AUTO_ARRAY_HPP
  37
  38 #include <cstddef>
  39
  40 namespace utils {
  41
  42
  43 template< class > class auto_array;
  44
  45
  46 namespace detail {
  47
  48
  49 /// Wrapper class to provide reference semantics for utils::auto_array.
  50 ///
  51 /// This class is internally used, for example, to allow returning a
  52 /// utils::auto_array from a function.
  53 template< class T >
  54 class auto_array_ref {
  55     /// Internal pointer to the dynamically-allocated array.
  56     T* _ptr;
  57
  58     template< class > friend class utils::auto_array;
  59
  60 public:
  61     explicit auto_array_ref(T*);
  62 };
  63
  64
  65 }  // namespace detail
  66
  67
  68 /// A simple smart pointer for arrays providing strict ownership semantics.
  69 ///
  70 /// This class is the counterpart of std::auto_ptr for arrays.  The semantics of
  71 /// the API of this class are the same as those of std::auto_ptr.
  72 ///
  73 /// The wrapped pointer must be NULL or must have been allocated using operator
  74 /// new[].
  75 template< class T >
  76 class auto_array {
  77     /// Internal pointer to the dynamically-allocated array.
  78     T* _ptr;
  79
  80 public:
  81     auto_array(T* = NULL) throw();
  82     auto_array(auto_array< T >&) throw();
  83     auto_array(detail::auto_array_ref< T >) throw();
  84     ~auto_array(void) throw();
  85
  86     T* get(void) throw();
  87     const T* get(void) const throw();
  88
  89     T* release(void) throw();
  90     void reset(T* = NULL) throw();
  91
  92     auto_array< T >& operator=(auto_array< T >&) throw();
  93     auto_array< T >& operator=(detail::auto_array_ref< T >) throw();
  94     T& operator[](int) throw();
  95     const T& operator[](int) const throw();
  96     operator detail::auto_array_ref< T >(void) throw();
  97 };
  98
  99
 100 }  // namespace utils
 101
 102
 103 #endif  // !defined(UTILS_AUTO_ARRAY_HPP)