_S_construct() [3/5]

template<typename _CharT, typename _Traits, typename _Alloc>

template<typename _InIterator>

_CharT * std::basic_string< _CharT, _Traits, _Alloc >::_S_construct	(	_InIterator	__beg,
		_InIterator	__end,
		const _Alloc &	__a,
		forward_iterator_tag	)

Definition at line 3329 of file cow_string.h.

      {
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
      if (__beg == __end && __a == _Alloc())
        return _S_empty_rep()._M_refdata();
#endif
      // NB: Not required, but considered best practice.
      if (__gnu_cxx::__is_null_pointer(__beg) && __beg != __end)
        __throw_logic_error(__N("basic_string::_S_construct null not valid"));
 
      const size_type __dnew = static_cast<size_type>(std::distance(__beg,
                                                      __end));
      // Check for out_of_range and length_error exceptions.
      _Rep* __r = _Rep::_S_create(__dnew, size_type(0), __a);
      __try
        { _S_copy_chars(__r->_M_refdata(), __beg, __end); }
      __catch(...)
        {
          __r->_M_destroy(__a);
          __throw_exception_again;
        }
      __r->_M_set_length_and_sharable(__dnew);
      return __r->_M_refdata();
      }