basic_string.tcc

来自「ARM Linux Tool 各种代码包括MTD」· TCC 代码 · 共 863 行 · 第 1/2 页

      basic_string<_CharT, _Traits, _Alloc>&
      basic_string<_CharT, _Traits, _Alloc>::
      _M_replace(iterator __i1, iterator __i2, _InputIter __k1, 
		 _InputIter __k2, input_iterator_tag)
      {
	basic_string __s(__k1, __k2);
	return this->replace(__i1, __i2, __s._M_ibegin(), __s._M_iend());
      }

  template<typename _CharT, typename _Traits, typename _Alloc>
    template<typename _ForwardIter>
      basic_string<_CharT, _Traits, _Alloc>&
      basic_string<_CharT, _Traits, _Alloc>::
      _M_replace(iterator __i1, iterator __i2, _ForwardIter __k1, 
		 _ForwardIter __k2, forward_iterator_tag)
      {
	size_type __dold = __i2 - __i1;
	size_type __dmax = this->max_size();
	size_type __dnew = static_cast<size_type>(distance(__k1, __k2));

	if (__dmax <= __dnew)
	  __throw_length_error("basic_string::_M_replace");
	size_type __off = __i1 - _M_ibegin();
	_M_mutate(__off, __dold, __dnew);
	// Invalidated __i1, __i2
	if (__dnew)
	  _S_copy_chars(_M_data() + __off, __k1, __k2);
	
	return *this;
      }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>&
    basic_string<_CharT, _Traits, _Alloc>::
    replace(size_type __pos1, size_type __n1, const basic_string& __str,
	    size_type __pos2, size_type __n2)
    {
      return this->replace(_M_check(__pos1), _M_fold(__pos1, __n1),
			   __str._M_check(__pos2), 
			   __str._M_fold(__pos2, __n2));
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>&
    basic_string<_CharT,_Traits,_Alloc>::
    append(const basic_string& __str)
    {
      // Iff appending itself, string needs to pre-reserve the
      // correct size so that _M_mutate does not clobber the
      // iterators formed here.
      size_type __size = __str.size();
      size_type __len = __size + this->size();
      if (__len > this->capacity())
	this->reserve(__len);
      return this->replace(_M_iend(), _M_iend(), __str._M_ibegin(),
			   __str._M_iend());
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>&
    basic_string<_CharT,_Traits,_Alloc>::
    append(const basic_string& __str, size_type __pos, size_type __n)
    {
      // Iff appending itself, string needs to pre-reserve the
      // correct size so that _M_mutate does not clobber the
      // iterators formed here.
      size_type __len = min(__str.size() - __pos, __n) + this->size();
      if (__len > this->capacity())
	this->reserve(__len);
      return this->replace(_M_iend(), _M_iend(), __str._M_check(__pos),
			   __str._M_fold(__pos, __n));
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>&
    basic_string<_CharT,_Traits,_Alloc>::
    append(const _CharT* __s, size_type __n)
    {
      size_type __len = __n + this->size();
      if (__len > this->capacity())
	this->reserve(__len);
      return this->replace(_M_iend(), _M_iend(), __s, __s + __n);
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>&
    basic_string<_CharT,_Traits,_Alloc>::
    append(size_type __n, _CharT __c)
    {
      size_type __len = __n + this->size();
      if (__len > this->capacity())
	this->reserve(__len);
       return this->replace(_M_iend(), _M_iend(), __n, __c);
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>
    operator+(const _CharT* __lhs,
             const basic_string<_CharT,_Traits,_Alloc>& __rhs)
    {
      typedef basic_string<_CharT,_Traits,_Alloc> __string_type;
      typedef typename __string_type::size_type	  __size_type;
      __size_type __len = _Traits::length(__lhs);
      __string_type __str;
      __str.reserve(__len + __rhs.size());
      __str.append(__lhs, __lhs + __len);
      __str.append(__rhs);
      return __str;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT,_Traits,_Alloc>
    operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
    {
      typedef basic_string<_CharT,_Traits,_Alloc> __string_type;
      typedef typename __string_type::size_type	  __size_type;
      __string_type __str;
      __size_type __len = __rhs.size();
      __str.reserve(__len + 1);
      __str.append(__size_type(1), __lhs);
      __str.append(__rhs);
      return __str;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>&
    basic_string<_CharT, _Traits, _Alloc>::
    replace(iterator __i1, iterator __i2, size_type __n2, _CharT __c)
    {
      size_type __n1 = __i2 - __i1;
      size_type __off1 = __i1 - _M_ibegin();
      if (max_size() - (this->size() - __n1) <= __n2)
	__throw_length_error("basic_string::replace");
      _M_mutate (__off1, __n1, __n2);
      // Invalidated __i1, __i2
      if (__n2)
	traits_type::assign(_M_data() + __off1, __n2, __c);
      return *this;
    }
  
  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    copy(_CharT* __s, size_type __n, size_type __pos) const
    {
      if (__pos > this->size())
	__throw_out_of_range("basic_string::copy");
      
      if (__n > this->size() - __pos)
	__n = this->size() - __pos;
      
      traits_type::copy(__s, _M_data() + __pos, __n);
      // 21.3.5.7 par 3: do not append null.  (good.)
      return __n;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find(const _CharT* __s, size_type __pos, size_type __n) const
    {
      size_type __size = this->size();
      size_t __xpos = __pos;
      const _CharT* __data = _M_data();
      for (; __xpos + __n <= __size; ++__xpos)
	if (traits_type::compare(__data + __xpos, __s, __n) == 0)
	  return __xpos;
      return npos;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find(_CharT __c, size_type __pos) const
    {
      size_type __size = this->size();
      size_type __ret = npos;
      if (__pos < __size)
	{
	  const _CharT* __data = _M_data();
	  size_type __n = __size - __pos;
	  const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
	  if (__p)
	    __ret = __p - __data;
	}
      return __ret;
    }


  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    rfind(const _CharT* __s, size_type __pos, size_type __n) const
    {
      size_type __size = this->size();
      if (__n <= __size)
	{
	  __pos = std::min(__size - __n ,__pos);
	  const _CharT* __data = _M_data();
	  do 
	    {
	      if (traits_type::compare(__data + __pos, __s, __n) == 0)
		return __pos;
	    } 
	  while (__pos-- > 0);
	}
      return npos;
    }
  
  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    rfind(_CharT __c, size_type __pos) const
    {
      size_type __size = this->size();
      if (__size)
	{
	  size_t __xpos = __size - 1;
	  if (__xpos > __pos)
	    __xpos = __pos;
      
	  for (++__xpos; __xpos-- > 0; )
	    if (traits_type::eq(_M_data()[__xpos], __c))
	      return __xpos;
	}
      return npos;
    }
  
  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
    {
      for (; __n && __pos < this->size(); ++__pos)
	{
	  const _CharT* __p = traits_type::find(__s, __n, _M_data()[__pos]);
	  if (__p)
	    return __pos;
	}
      return npos;
    }
 
  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
    {
      size_type __size = this->size();
      if (__size && __n)
	{ 
	  if (--__size > __pos) 
	    __size = __pos;
	  do
	    {
	      if (traits_type::find(__s, __n, _M_data()[__size]))
		return __size;
	    } 
	  while (__size-- != 0);
	}
      return npos;
    }
  
  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
    {
      size_t __xpos = __pos;
      for (; __n && __xpos < this->size(); ++__xpos)
	if (!traits_type::find(__s, __n, _M_data()[__xpos]))
	  return __xpos;
      return npos;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_first_not_of(_CharT __c, size_type __pos) const
    {
      size_t __xpos = __pos;
      for (; __xpos < this->size(); ++__xpos)
	if (!traits_type::eq(_M_data()[__xpos], __c))
	  return __xpos;
      return npos;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
    {
      size_type __size = this->size();
      if (__size && __n)
	{ 
	  if (--__size > __pos) 
	    __size = __pos;
	  do
	    {
	      if (!traits_type::find(__s, __n, _M_data()[__size]))
		return __size;
	    } 
	  while (__size--);
	}
      return npos;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    basic_string<_CharT, _Traits, _Alloc>::size_type
    basic_string<_CharT, _Traits, _Alloc>::
    find_last_not_of(_CharT __c, size_type __pos) const
    {
      size_type __size = this->size();
      if (__size)
	{ 
	  if (--__size > __pos) 
	    __size = __pos;
	  do
	    {
	      if (!traits_type::eq(_M_data()[__size], __c))
		return __size;
	    } 
	  while (__size--);
	}
      return npos;
    }
  
  template<typename _CharT, typename _Traits, typename _Alloc>
    int
    basic_string<_CharT, _Traits, _Alloc>::
    compare(size_type __pos, size_type __n, const basic_string& __str) const
    {
      size_type __size = this->size();
      size_type __osize = __str.size();
      if (__pos > __size)
	__throw_out_of_range("basic_string::compare");
      
      size_type __rsize= min(__size - __pos, __n);
      size_type __len = min(__rsize, __osize);
      int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len);
      if (!__r)
	__r = __rsize - __osize;
      return __r;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    int
    basic_string<_CharT, _Traits, _Alloc>::
    compare(size_type __pos1, size_type __n1, const basic_string& __str,
	    size_type __pos2, size_type __n2) const
    {
      size_type __size = this->size();
      size_type __osize = __str.size();
      if (__pos1 > __size || __pos2 > __osize)
	__throw_out_of_range("basic_string::compare");
      
      size_type __rsize = min(__size - __pos1, __n1);
      size_type __rosize = min(__osize - __pos2, __n2);
      size_type __len = min(__rsize, __rosize);
      int __r = traits_type::compare(_M_data() + __pos1, 
				     __str.data() + __pos2, __len);
      if (!__r)
	__r = __rsize - __rosize;
      return __r;
    }


  template<typename _CharT, typename _Traits, typename _Alloc>
    int
    basic_string<_CharT, _Traits, _Alloc>::
    compare(const _CharT* __s) const
    {
      size_type __size = this->size();
      int __r = traits_type::compare(_M_data(), __s, __size);
      if (!__r)
	__r = __size - traits_type::length(__s);
      return __r;
    }


  template<typename _CharT, typename _Traits, typename _Alloc>
    int
    basic_string <_CharT,_Traits,_Alloc>::
    compare(size_type __pos, size_type __n1, const _CharT* __s) const
    {
      size_type __size = this->size();
      if (__pos > __size)
	__throw_out_of_range("basic_string::compare");
      
      size_type __osize = traits_type::length(__s);
      size_type __rsize = min(__size - __pos, __n1);
      size_type __len = min(__rsize, __osize);
      int __r = traits_type::compare(_M_data() + __pos, __s, __len);
      if (!__r)
	__r = __rsize - __osize;
      return __r;
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    int
    basic_string <_CharT,_Traits,_Alloc>::
    compare(size_type __pos, size_type __n1, const _CharT* __s, 
	    size_type __n2) const
    {
      size_type __size = this->size();
      if (__pos > __size)
	__throw_out_of_range("basic_string::compare");
      
      size_type __osize = min(traits_type::length(__s), __n2);
      size_type __rsize = min(__size - __pos, __n1);
      size_type __len = min(__rsize, __osize);
      int __r = traits_type::compare(_M_data() + __pos, __s, __len);
      if (!__r)
	__r = __rsize - __osize;
      return __r;
    }

  template <class _CharT, class _Traits, class _Alloc>
    void
    _S_string_copy(const basic_string<_CharT, _Traits, _Alloc>& __str,
		   _CharT* __buf, typename _Alloc::size_type __bufsiz)
    {
      typedef typename _Alloc::size_type size_type;
      size_type __strsize = __str.size();
      size_type __bytes = min(__strsize, __bufsiz - 1);
      _Traits::copy(__buf, __str.data(), __bytes);
      __buf[__bytes] = _CharT();
    }
} // namespace std

#endif