--- /dev/null
+// Versatile string -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file ext/vstring.h
+ * This file is a GNU extension to the Standard C++ Library.
+ */
+
+#ifndef _VSTRING_H
+#define _VSTRING_H 1
+
+#pragma GCC system_header
+
+#include <initializer_list>
+#include <ext/vstring_util.h>
+#include <ext/rc_string_base.h>
+#include <ext/sso_string_base.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ /**
+ * @class __versa_string vstring.h
+ * @brief Managing sequences of characters and character-like objects.
+ */
+
+ // Template class __versa_string
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ class __versa_string
+ : private _Base<_CharT, _Traits, _Alloc>
+ {
+ typedef _Base<_CharT, _Traits, _Alloc> __vstring_base;
+ typedef typename __vstring_base::_CharT_alloc_type _CharT_alloc_type;
+
+ // Types:
+ public:
+ typedef _Traits traits_type;
+ typedef typename _Traits::char_type value_type;
+ typedef _Alloc allocator_type;
+ typedef typename _CharT_alloc_type::size_type size_type;
+ typedef typename _CharT_alloc_type::difference_type difference_type;
+ typedef typename _CharT_alloc_type::reference reference;
+ typedef typename _CharT_alloc_type::const_reference const_reference;
+ typedef typename _CharT_alloc_type::pointer pointer;
+ typedef typename _CharT_alloc_type::const_pointer const_pointer;
+ typedef __gnu_cxx::__normal_iterator<pointer, __versa_string> iterator;
+ typedef __gnu_cxx::__normal_iterator<const_pointer, __versa_string>
+ const_iterator;
+ typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+ typedef std::reverse_iterator<iterator> reverse_iterator;
+
+ // Data Member (public):
+ /// Value returned by various member functions when they fail.
+ static const size_type npos = static_cast<size_type>(-1);
+
+ private:
+ size_type
+ _M_check(size_type __pos, const char* __s) const
+ {
+ if (__pos > this->size())
+ std::__throw_out_of_range(__N(__s));
+ return __pos;
+ }
+
+ void
+ _M_check_length(size_type __n1, size_type __n2, const char* __s) const
+ {
+ if (this->max_size() - (this->size() - __n1) < __n2)
+ std::__throw_length_error(__N(__s));
+ }
+
+ // NB: _M_limit doesn't check for a bad __pos value.
+ size_type
+ _M_limit(size_type __pos, size_type __off) const
+ {
+ const bool __testoff = __off < this->size() - __pos;
+ return __testoff ? __off : this->size() - __pos;
+ }
+
+ // True if _Rep and source do not overlap.
+ bool
+ _M_disjunct(const _CharT* __s) const
+ {
+ return (std::less<const _CharT*>()(__s, this->_M_data())
+ || std::less<const _CharT*>()(this->_M_data()
+ + this->size(), __s));
+ }
+
+ // For the internal use we have functions similar to `begin'/`end'
+ // but they do not call _M_leak.
+ iterator
+ _M_ibegin() const
+ { return iterator(this->_M_data()); }
+
+ iterator
+ _M_iend() const
+ { return iterator(this->_M_data() + this->_M_length()); }
+
+ public:
+ // Construct/copy/destroy:
+ // NB: We overload ctors in some cases instead of using default
+ // arguments, per 17.4.4.4 para. 2 item 2.
+
+ /**
+ * @brief Default constructor creates an empty string.
+ */
+ __versa_string()
+ : __vstring_base() { }
+
+ /**
+ * @brief Construct an empty string using allocator @a a.
+ */
+ explicit
+ __versa_string(const _Alloc& __a)
+ : __vstring_base(__a) { }
+
+ // NB: per LWG issue 42, semantics different from IS:
+ /**
+ * @brief Construct string with copy of value of @a str.
+ * @param __str Source string.
+ */
+ __versa_string(const __versa_string& __str)
+ : __vstring_base(__str) { }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief String move constructor.
+ * @param __str Source string.
+ *
+ * The newly-constructed %string contains the exact contents of
+ * @a str. The contents of @a str are a valid, but unspecified
+ * string.
+ */
+ __versa_string(__versa_string&& __str)
+ : __vstring_base(std::forward<__vstring_base>(__str)) { }
+
+ /**
+ * @brief Construct string from an initializer list.
+ * @param __l std::initializer_list of characters.
+ * @param __a Allocator to use (default is default allocator).
+ */
+ __versa_string(std::initializer_list<_CharT> __l,
+ const _Alloc& __a = _Alloc())
+ : __vstring_base(__l.begin(), __l.end(), __a) { }
+#endif
+
+ /**
+ * @brief Construct string as copy of a substring.
+ * @param __str Source string.
+ * @param __pos Index of first character to copy from.
+ * @param __n Number of characters to copy (default remainder).
+ */
+ __versa_string(const __versa_string& __str, size_type __pos,
+ size_type __n = npos)
+ : __vstring_base(__str._M_data()
+ + __str._M_check(__pos,
+ "__versa_string::__versa_string"),
+ __str._M_data() + __str._M_limit(__pos, __n)
+ + __pos, _Alloc()) { }
+
+ /**
+ * @brief Construct string as copy of a substring.
+ * @param __str Source string.
+ * @param __pos Index of first character to copy from.
+ * @param __n Number of characters to copy.
+ * @param __a Allocator to use.
+ */
+ __versa_string(const __versa_string& __str, size_type __pos,
+ size_type __n, const _Alloc& __a)
+ : __vstring_base(__str._M_data()
+ + __str._M_check(__pos,
+ "__versa_string::__versa_string"),
+ __str._M_data() + __str._M_limit(__pos, __n)
+ + __pos, __a) { }
+
+ /**
+ * @brief Construct string initialized by a character array.
+ * @param __s Source character array.
+ * @param __n Number of characters to copy.
+ * @param __a Allocator to use (default is default allocator).
+ *
+ * NB: @a __s must have at least @a __n characters, '\\0' has no special
+ * meaning.
+ */
+ __versa_string(const _CharT* __s, size_type __n,
+ const _Alloc& __a = _Alloc())
+ : __vstring_base(__s, __s + __n, __a) { }
+
+ /**
+ * @brief Construct string as copy of a C string.
+ * @param __s Source C string.
+ * @param __a Allocator to use (default is default allocator).
+ */
+ __versa_string(const _CharT* __s, const _Alloc& __a = _Alloc())
+ : __vstring_base(__s, __s ? __s + traits_type::length(__s) :
+ __s + npos, __a) { }
+
+ /**
+ * @brief Construct string as multiple characters.
+ * @param __n Number of characters.
+ * @param __c Character to use.
+ * @param __a Allocator to use (default is default allocator).
+ */
+ __versa_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc())
+ : __vstring_base(__n, __c, __a) { }
+
+ /**
+ * @brief Construct string as copy of a range.
+ * @param __beg Start of range.
+ * @param __end End of range.
+ * @param __a Allocator to use (default is default allocator).
+ */
+ template<class _InputIterator>
+ __versa_string(_InputIterator __beg, _InputIterator __end,
+ const _Alloc& __a = _Alloc())
+ : __vstring_base(__beg, __end, __a) { }
+
+ /**
+ * @brief Destroy the string instance.
+ */
+ ~__versa_string() { }
+
+ /**
+ * @brief Assign the value of @a str to this string.
+ * @param __str Source string.
+ */
+ __versa_string&
+ operator=(const __versa_string& __str)
+ { return this->assign(__str); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief String move assignment operator.
+ * @param __str Source string.
+ *
+ * The contents of @a __str are moved into this string (without
+ * copying). @a __str is a valid, but unspecified string.
+ */
+ __versa_string&
+ operator=(__versa_string&& __str)
+ {
+ if (this != &__str)
+ this->swap(__str);
+ return *this;
+ }
+
+ /**
+ * @brief Set value to string constructed from initializer list.
+ * @param __l std::initializer_list.
+ */
+ __versa_string&
+ operator=(std::initializer_list<_CharT> __l)
+ {
+ this->assign(__l.begin(), __l.end());
+ return *this;
+ }
+#endif
+
+ /**
+ * @brief Copy contents of @a __s into this string.
+ * @param __s Source null-terminated string.
+ */
+ __versa_string&
+ operator=(const _CharT* __s)
+ { return this->assign(__s); }
+
+ /**
+ * @brief Set value to string of length 1.
+ * @param __c Source character.
+ *
+ * Assigning to a character makes this string length 1 and
+ * (*this)[0] == @a __c.
+ */
+ __versa_string&
+ operator=(_CharT __c)
+ {
+ this->assign(1, __c);
+ return *this;
+ }
+
+ // Iterators:
+ /**
+ * Returns a read/write iterator that points to the first character in
+ * the %string. Unshares the string.
+ */
+ iterator
+ begin()
+ {
+ this->_M_leak();
+ return iterator(this->_M_data());
+ }
+
+ /**
+ * Returns a read-only (constant) iterator that points to the first
+ * character in the %string.
+ */
+ const_iterator
+ begin() const
+ { return const_iterator(this->_M_data()); }
+
+ /**
+ * Returns a read/write iterator that points one past the last
+ * character in the %string. Unshares the string.
+ */
+ iterator
+ end()
+ {
+ this->_M_leak();
+ return iterator(this->_M_data() + this->size());
+ }
+
+ /**
+ * Returns a read-only (constant) iterator that points one past the
+ * last character in the %string.
+ */
+ const_iterator
+ end() const
+ { return const_iterator(this->_M_data() + this->size()); }
+
+ /**
+ * Returns a read/write reverse iterator that points to the last
+ * character in the %string. Iteration is done in reverse element
+ * order. Unshares the string.
+ */
+ reverse_iterator
+ rbegin()
+ { return reverse_iterator(this->end()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to the last character in the %string. Iteration is done in
+ * reverse element order.
+ */
+ const_reverse_iterator
+ rbegin() const
+ { return const_reverse_iterator(this->end()); }
+
+ /**
+ * Returns a read/write reverse iterator that points to one before the
+ * first character in the %string. Iteration is done in reverse
+ * element order. Unshares the string.
+ */
+ reverse_iterator
+ rend()
+ { return reverse_iterator(this->begin()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to one before the first character in the %string. Iteration
+ * is done in reverse element order.
+ */
+ const_reverse_iterator
+ rend() const
+ { return const_reverse_iterator(this->begin()); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * Returns a read-only (constant) iterator that points to the first
+ * character in the %string.
+ */
+ const_iterator
+ cbegin() const
+ { return const_iterator(this->_M_data()); }
+
+ /**
+ * Returns a read-only (constant) iterator that points one past the
+ * last character in the %string.
+ */
+ const_iterator
+ cend() const
+ { return const_iterator(this->_M_data() + this->size()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to the last character in the %string. Iteration is done in
+ * reverse element order.
+ */
+ const_reverse_iterator
+ crbegin() const
+ { return const_reverse_iterator(this->end()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to one before the first character in the %string. Iteration
+ * is done in reverse element order.
+ */
+ const_reverse_iterator
+ crend() const
+ { return const_reverse_iterator(this->begin()); }
+#endif
+
+ public:
+ // Capacity:
+ /// Returns the number of characters in the string, not including any
+ /// null-termination.
+ size_type
+ size() const
+ { return this->_M_length(); }
+
+ /// Returns the number of characters in the string, not including any
+ /// null-termination.
+ size_type
+ length() const
+ { return this->_M_length(); }
+
+ /// Returns the size() of the largest possible %string.
+ size_type
+ max_size() const
+ { return this->_M_max_size(); }
+
+ /**
+ * @brief Resizes the %string to the specified number of characters.
+ * @param __n Number of characters the %string should contain.
+ * @param __c Character to fill any new elements.
+ *
+ * This function will %resize the %string to the specified
+ * number of characters. If the number is smaller than the
+ * %string's current size the %string is truncated, otherwise
+ * the %string is extended and new elements are set to @a __c.
+ */
+ void
+ resize(size_type __n, _CharT __c);
+
+ /**
+ * @brief Resizes the %string to the specified number of characters.
+ * @param __n Number of characters the %string should contain.
+ *
+ * This function will resize the %string to the specified
+ * length. If the new size is smaller than the %string's
+ * current size the %string is truncated, otherwise the %string
+ * is extended and new characters are default-constructed. For
+ * basic types such as char, this means setting them to 0.
+ */
+ void
+ resize(size_type __n)
+ { this->resize(__n, _CharT()); }
+
+ /**
+ * Returns the total number of characters that the %string can
+ * hold before needing to allocate more memory.
+ */
+ size_type
+ capacity() const
+ { return this->_M_capacity(); }
+
+ /**
+ * @brief Attempt to preallocate enough memory for specified number of
+ * characters.
+ * @param __res_arg Number of characters required.
+ * @throw std::length_error If @a __res_arg exceeds @c max_size().
+ *
+ * This function attempts to reserve enough memory for the
+ * %string to hold the specified number of characters. If the
+ * number requested is more than max_size(), length_error is
+ * thrown.
+ *
+ * The advantage of this function is that if optimal code is a
+ * necessity and the user can determine the string length that
+ * will be required, the user can reserve the memory in
+ * %advance, and thus prevent a possible reallocation of memory
+ * and copying of %string data.
+ */
+ void
+ reserve(size_type __res_arg = 0)
+ { this->_M_reserve(__res_arg); }
+
+ /**
+ * Erases the string, making it empty.
+ */
+ void
+ clear()
+ { this->_M_clear(); }
+
+ /**
+ * Returns true if the %string is empty. Equivalent to *this == "".
+ */
+ bool
+ empty() const
+ { return this->size() == 0; }
+
+ // Element access:
+ /**
+ * @brief Subscript access to the data contained in the %string.
+ * @param __pos The index of the character to access.
+ * @return Read-only (constant) reference to the character.
+ *
+ * This operator allows for easy, array-style, data access.
+ * Note that data access with this operator is unchecked and
+ * out_of_range lookups are not defined. (For checked lookups
+ * see at().)
+ */
+ const_reference
+ operator[] (size_type __pos) const
+ {
+ _GLIBCXX_DEBUG_ASSERT(__pos <= this->size());
+ return this->_M_data()[__pos];
+ }
+
+ /**
+ * @brief Subscript access to the data contained in the %string.
+ * @param __pos The index of the character to access.
+ * @return Read/write reference to the character.
+ *
+ * This operator allows for easy, array-style, data access.
+ * Note that data access with this operator is unchecked and
+ * out_of_range lookups are not defined. (For checked lookups
+ * see at().) Unshares the string.
+ */
+ reference
+ operator[](size_type __pos)
+ {
+ // allow pos == size() as v3 extension:
+ _GLIBCXX_DEBUG_ASSERT(__pos <= this->size());
+ // but be strict in pedantic mode:
+ _GLIBCXX_DEBUG_PEDASSERT(__pos < this->size());
+ this->_M_leak();
+ return this->_M_data()[__pos];
+ }
+
+ /**
+ * @brief Provides access to the data contained in the %string.
+ * @param __n The index of the character to access.
+ * @return Read-only (const) reference to the character.
+ * @throw std::out_of_range If @a __n is an invalid index.
+ *
+ * This function provides for safer data access. The parameter
+ * is first checked that it is in the range of the string. The
+ * function throws out_of_range if the check fails.
+ */
+ const_reference
+ at(size_type __n) const
+ {
+ if (__n >= this->size())
+ std::__throw_out_of_range(__N("__versa_string::at"));
+ return this->_M_data()[__n];
+ }
+
+ /**
+ * @brief Provides access to the data contained in the %string.
+ * @param __n The index of the character to access.
+ * @return Read/write reference to the character.
+ * @throw std::out_of_range If @a __n is an invalid index.
+ *
+ * This function provides for safer data access. The parameter
+ * is first checked that it is in the range of the string. The
+ * function throws out_of_range if the check fails. Success
+ * results in unsharing the string.
+ */
+ reference
+ at(size_type __n)
+ {
+ if (__n >= this->size())
+ std::__throw_out_of_range(__N("__versa_string::at"));
+ this->_M_leak();
+ return this->_M_data()[__n];
+ }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * Returns a read/write reference to the data at the first
+ * element of the %string.
+ */
+ reference
+ front()
+ { return *begin(); }
+
+ /**
+ * Returns a read-only (constant) reference to the data at the first
+ * element of the %string.
+ */
+ const_reference
+ front() const
+ { return *begin(); }
+
+ /**
+ * Returns a read/write reference to the data at the last
+ * element of the %string.
+ */
+ reference
+ back()
+ { return *(end() - 1); }
+
+ /**
+ * Returns a read-only (constant) reference to the data at the
+ * last element of the %string.
+ */
+ const_reference
+ back() const
+ { return *(end() - 1); }
+#endif
+
+ // Modifiers:
+ /**
+ * @brief Append a string to this string.
+ * @param __str The string to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ operator+=(const __versa_string& __str)
+ { return this->append(__str); }
+
+ /**
+ * @brief Append a C string.
+ * @param __s The C string to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ operator+=(const _CharT* __s)
+ { return this->append(__s); }
+
+ /**
+ * @brief Append a character.
+ * @param __c The character to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ operator+=(_CharT __c)
+ {
+ this->push_back(__c);
+ return *this;
+ }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Append an initializer_list of characters.
+ * @param __l The initializer_list of characters to be appended.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ operator+=(std::initializer_list<_CharT> __l)
+ { return this->append(__l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+ /**
+ * @brief Append a string to this string.
+ * @param __str The string to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ append(const __versa_string& __str)
+ { return _M_append(__str._M_data(), __str.size()); }
+
+ /**
+ * @brief Append a substring.
+ * @param __str The string to append.
+ * @param __pos Index of the first character of str to append.
+ * @param __n The number of characters to append.
+ * @return Reference to this string.
+ * @throw std::out_of_range if @a pos is not a valid index.
+ *
+ * This function appends @a __n characters from @a __str
+ * starting at @a __pos to this string. If @a __n is is larger
+ * than the number of available characters in @a __str, the
+ * remainder of @a __str is appended.
+ */
+ __versa_string&
+ append(const __versa_string& __str, size_type __pos, size_type __n)
+ { return _M_append(__str._M_data()
+ + __str._M_check(__pos, "__versa_string::append"),
+ __str._M_limit(__pos, __n)); }
+
+ /**
+ * @brief Append a C substring.
+ * @param __s The C string to append.
+ * @param __n The number of characters to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ append(const _CharT* __s, size_type __n)
+ {
+ __glibcxx_requires_string_len(__s, __n);
+ _M_check_length(size_type(0), __n, "__versa_string::append");
+ return _M_append(__s, __n);
+ }
+
+ /**
+ * @brief Append a C string.
+ * @param __s The C string to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ append(const _CharT* __s)
+ {
+ __glibcxx_requires_string(__s);
+ const size_type __n = traits_type::length(__s);
+ _M_check_length(size_type(0), __n, "__versa_string::append");
+ return _M_append(__s, __n);
+ }
+
+ /**
+ * @brief Append multiple characters.
+ * @param __n The number of characters to append.
+ * @param __c The character to use.
+ * @return Reference to this string.
+ *
+ * Appends n copies of c to this string.
+ */
+ __versa_string&
+ append(size_type __n, _CharT __c)
+ { return _M_replace_aux(this->size(), size_type(0), __n, __c); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Append an initializer_list of characters.
+ * @param __l The initializer_list of characters to append.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ append(std::initializer_list<_CharT> __l)
+ { return this->append(__l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+ /**
+ * @brief Append a range of characters.
+ * @param __first Iterator referencing the first character to append.
+ * @param __last Iterator marking the end of the range.
+ * @return Reference to this string.
+ *
+ * Appends characters in the range [first,last) to this string.
+ */
+ template<class _InputIterator>
+ __versa_string&
+ append(_InputIterator __first, _InputIterator __last)
+ { return this->replace(_M_iend(), _M_iend(), __first, __last); }
+
+ /**
+ * @brief Append a single character.
+ * @param __c Character to append.
+ */
+ void
+ push_back(_CharT __c)
+ {
+ const size_type __size = this->size();
+ if (__size + 1 > this->capacity() || this->_M_is_shared())
+ this->_M_mutate(__size, size_type(0), 0, size_type(1));
+ traits_type::assign(this->_M_data()[__size], __c);
+ this->_M_set_length(__size + 1);
+ }
+
+ /**
+ * @brief Set value to contents of another string.
+ * @param __str Source string to use.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ assign(const __versa_string& __str)
+ {
+ this->_M_assign(__str);
+ return *this;
+ }
+
+ /**
+ * @brief Set value to a substring of a string.
+ * @param __str The string to use.
+ * @param __pos Index of the first character of str.
+ * @param __n Number of characters to use.
+ * @return Reference to this string.
+ * @throw std::out_of_range if @a __pos is not a valid index.
+ *
+ * This function sets this string to the substring of @a __str
+ * consisting of @a __n characters at @a __pos. If @a __n is
+ * is larger than the number of available characters in @a
+ * __str, the remainder of @a __str is used.
+ */
+ __versa_string&
+ assign(const __versa_string& __str, size_type __pos, size_type __n)
+ { return _M_replace(size_type(0), this->size(), __str._M_data()
+ + __str._M_check(__pos, "__versa_string::assign"),
+ __str._M_limit(__pos, __n)); }
+
+ /**
+ * @brief Set value to a C substring.
+ * @param __s The C string to use.
+ * @param __n Number of characters to use.
+ * @return Reference to this string.
+ *
+ * This function sets the value of this string to the first @a
+ * __n characters of @a __s. If @a __n is is larger than the
+ * number of available characters in @a __s, the remainder of
+ * @a __s is used.
+ */
+ __versa_string&
+ assign(const _CharT* __s, size_type __n)
+ {
+ __glibcxx_requires_string_len(__s, __n);
+ return _M_replace(size_type(0), this->size(), __s, __n);
+ }
+
+ /**
+ * @brief Set value to contents of a C string.
+ * @param __s The C string to use.
+ * @return Reference to this string.
+ *
+ * This function sets the value of this string to the value of
+ * @a __s. The data is copied, so there is no dependence on @a
+ * __s once the function returns.
+ */
+ __versa_string&
+ assign(const _CharT* __s)
+ {
+ __glibcxx_requires_string(__s);
+ return _M_replace(size_type(0), this->size(), __s,
+ traits_type::length(__s));
+ }
+
+ /**
+ * @brief Set value to multiple characters.
+ * @param __n Length of the resulting string.
+ * @param __c The character to use.
+ * @return Reference to this string.
+ *
+ * This function sets the value of this string to @a __n copies of
+ * character @a __c.
+ */
+ __versa_string&
+ assign(size_type __n, _CharT __c)
+ { return _M_replace_aux(size_type(0), this->size(), __n, __c); }
+
+ /**
+ * @brief Set value to a range of characters.
+ * @param __first Iterator referencing the first character to append.
+ * @param __last Iterator marking the end of the range.
+ * @return Reference to this string.
+ *
+ * Sets value of string to characters in the range
+ * [first,last).
+ */
+ template<class _InputIterator>
+ __versa_string&
+ assign(_InputIterator __first, _InputIterator __last)
+ { return this->replace(_M_ibegin(), _M_iend(), __first, __last); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Set value to an initializer_list of characters.
+ * @param __l The initializer_list of characters to assign.
+ * @return Reference to this string.
+ */
+ __versa_string&
+ assign(std::initializer_list<_CharT> __l)
+ { return this->assign(__l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+ /**
+ * @brief Insert multiple characters.
+ * @param __p Iterator referencing location in string to insert at.
+ * @param __n Number of characters to insert
+ * @param __c The character to insert.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Inserts @a __n copies of character @a __c starting at the
+ * position referenced by iterator @a __p. If adding
+ * characters causes the length to exceed max_size(),
+ * length_error is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ void
+ insert(iterator __p, size_type __n, _CharT __c)
+ { this->replace(__p, __p, __n, __c); }
+
+ /**
+ * @brief Insert a range of characters.
+ * @param __p Iterator referencing location in string to insert at.
+ * @param __beg Start of range.
+ * @param __end End of range.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Inserts characters in range [beg,end). If adding characters
+ * causes the length to exceed max_size(), length_error is
+ * thrown. The value of the string doesn't change if an error
+ * is thrown.
+ */
+ template<class _InputIterator>
+ void
+ insert(iterator __p, _InputIterator __beg, _InputIterator __end)
+ { this->replace(__p, __p, __beg, __end); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Insert an initializer_list of characters.
+ * @param __p Iterator referencing location in string to insert at.
+ * @param __l The initializer_list of characters to insert.
+ * @throw std::length_error If new length exceeds @c max_size().
+ */
+ void
+ insert(iterator __p, std::initializer_list<_CharT> __l)
+ { this->insert(__p, __l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+ /**
+ * @brief Insert value of a string.
+ * @param __pos1 Iterator referencing location in string to insert at.
+ * @param __str The string to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Inserts value of @a __str starting at @a __pos1. If adding
+ * characters causes the length to exceed max_size(),
+ * length_error is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ __versa_string&
+ insert(size_type __pos1, const __versa_string& __str)
+ { return this->replace(__pos1, size_type(0),
+ __str._M_data(), __str.size()); }
+
+ /**
+ * @brief Insert a substring.
+ * @param __pos1 Iterator referencing location in string to insert at.
+ * @param __str The string to insert.
+ * @param __pos2 Start of characters in str to insert.
+ * @param __n Number of characters to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ * @throw std::out_of_range If @a __pos1 > size() or
+ * @a __pos2 > @a __str.size().
+ *
+ * Starting at @a __pos1, insert @a __n character of @a __str
+ * beginning with @a __pos2. If adding characters causes the
+ * length to exceed max_size(), length_error is thrown. If @a
+ * __pos1 is beyond the end of this string or @a __pos2 is
+ * beyond the end of @a __str, out_of_range is thrown. The
+ * value of the string doesn't change if an error is thrown.
+ */
+ __versa_string&
+ insert(size_type __pos1, const __versa_string& __str,
+ size_type __pos2, size_type __n)
+ { return this->replace(__pos1, size_type(0), __str._M_data()
+ + __str._M_check(__pos2, "__versa_string::insert"),
+ __str._M_limit(__pos2, __n)); }
+
+ /**
+ * @brief Insert a C substring.
+ * @param __pos Iterator referencing location in string to insert at.
+ * @param __s The C string to insert.
+ * @param __n The number of characters to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ * @throw std::out_of_range If @a __pos is beyond the end of this
+ * string.
+ *
+ * Inserts the first @a __n characters of @a __s starting at @a
+ * __pos. If adding characters causes the length to exceed
+ * max_size(), length_error is thrown. If @a __pos is beyond
+ * end(), out_of_range is thrown. The value of the string
+ * doesn't change if an error is thrown.
+ */
+ __versa_string&
+ insert(size_type __pos, const _CharT* __s, size_type __n)
+ { return this->replace(__pos, size_type(0), __s, __n); }
+
+ /**
+ * @brief Insert a C string.
+ * @param __pos Iterator referencing location in string to insert at.
+ * @param __s The C string to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ * @throw std::out_of_range If @a __pos is beyond the end of this
+ * string.
+ *
+ * Inserts the first @a __n characters of @a __s starting at @a
+ * __pos. If adding characters causes the length to exceed
+ * max_size(), length_error is thrown. If @a __pos is beyond
+ * end(), out_of_range is thrown. The value of the string
+ * doesn't change if an error is thrown.
+ */
+ __versa_string&
+ insert(size_type __pos, const _CharT* __s)
+ {
+ __glibcxx_requires_string(__s);
+ return this->replace(__pos, size_type(0), __s,
+ traits_type::length(__s));
+ }
+
+ /**
+ * @brief Insert multiple characters.
+ * @param __pos Index in string to insert at.
+ * @param __n Number of characters to insert
+ * @param __c The character to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ * @throw std::out_of_range If @a __pos is beyond the end of this
+ * string.
+ *
+ * Inserts @a __n copies of character @a __c starting at index
+ * @a __pos. If adding characters causes the length to exceed
+ * max_size(), length_error is thrown. If @a __pos > length(),
+ * out_of_range is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ __versa_string&
+ insert(size_type __pos, size_type __n, _CharT __c)
+ { return _M_replace_aux(_M_check(__pos, "__versa_string::insert"),
+ size_type(0), __n, __c); }
+
+ /**
+ * @brief Insert one character.
+ * @param __p Iterator referencing position in string to insert at.
+ * @param __c The character to insert.
+ * @return Iterator referencing newly inserted char.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Inserts character @a __c at position referenced by @a __p.
+ * If adding character causes the length to exceed max_size(),
+ * length_error is thrown. If @a __p is beyond end of string,
+ * out_of_range is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ iterator
+ insert(iterator __p, _CharT __c)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend());
+ const size_type __pos = __p - _M_ibegin();
+ _M_replace_aux(__pos, size_type(0), size_type(1), __c);
+ this->_M_set_leaked();
+ return iterator(this->_M_data() + __pos);
+ }
+
+ /**
+ * @brief Remove characters.
+ * @param __pos Index of first character to remove (default 0).
+ * @param __n Number of characters to remove (default remainder).
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos is beyond the end of this
+ * string.
+ *
+ * Removes @a __n characters from this string starting at @a
+ * __pos. The length of the string is reduced by @a __n. If
+ * there are < @a __n characters to remove, the remainder of
+ * the string is truncated. If @a __p is beyond end of string,
+ * out_of_range is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ __versa_string&
+ erase(size_type __pos = 0, size_type __n = npos)
+ {
+ this->_M_erase(_M_check(__pos, "__versa_string::erase"),
+ _M_limit(__pos, __n));
+ return *this;
+ }
+
+ /**
+ * @brief Remove one character.
+ * @param __position Iterator referencing the character to remove.
+ * @return iterator referencing same location after removal.
+ *
+ * Removes the character at @a __position from this string. The
+ * value of the string doesn't change if an error is thrown.
+ */
+ iterator
+ erase(iterator __position)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin()
+ && __position < _M_iend());
+ const size_type __pos = __position - _M_ibegin();
+ this->_M_erase(__pos, size_type(1));
+ this->_M_set_leaked();
+ return iterator(this->_M_data() + __pos);
+ }
+
+ /**
+ * @brief Remove a range of characters.
+ * @param __first Iterator referencing the first character to remove.
+ * @param __last Iterator referencing the end of the range.
+ * @return Iterator referencing location of first after removal.
+ *
+ * Removes the characters in the range [first,last) from this
+ * string. The value of the string doesn't change if an error
+ * is thrown.
+ */
+ iterator
+ erase(iterator __first, iterator __last)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
+ && __last <= _M_iend());
+ const size_type __pos = __first - _M_ibegin();
+ this->_M_erase(__pos, __last - __first);
+ this->_M_set_leaked();
+ return iterator(this->_M_data() + __pos);
+ }
+
+ /**
+ * @brief Replace characters with value from another string.
+ * @param __pos Index of first character to replace.
+ * @param __n Number of characters to be replaced.
+ * @param __str String to insert.
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos is beyond the end of this
+ * string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [pos,pos+n) from this
+ * string. In place, the value of @a __str is inserted. If @a
+ * __pos is beyond end of string, out_of_range is thrown. If
+ * the length of the result exceeds max_size(), length_error is
+ * thrown. The value of the string doesn't change if an error
+ * is thrown.
+ */
+ __versa_string&
+ replace(size_type __pos, size_type __n, const __versa_string& __str)
+ { return this->replace(__pos, __n, __str._M_data(), __str.size()); }
+
+ /**
+ * @brief Replace characters with value from another string.
+ * @param __pos1 Index of first character to replace.
+ * @param __n1 Number of characters to be replaced.
+ * @param __str String to insert.
+ * @param __pos2 Index of first character of str to use.
+ * @param __n2 Number of characters from str to use.
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 >
+ * str.size().
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [pos1,pos1 + n) from
+ * this string. In place, the value of @a __str is inserted.
+ * If @a __pos is beyond end of string, out_of_range is thrown.
+ * If the length of the result exceeds max_size(), length_error
+ * is thrown. The value of the string doesn't change if an
+ * error is thrown.
+ */
+ __versa_string&
+ replace(size_type __pos1, size_type __n1, const __versa_string& __str,
+ size_type __pos2, size_type __n2)
+ {
+ return this->replace(__pos1, __n1, __str._M_data()
+ + __str._M_check(__pos2,
+ "__versa_string::replace"),
+ __str._M_limit(__pos2, __n2));
+ }
+
+ /**
+ * @brief Replace characters with value of a C substring.
+ * @param __pos Index of first character to replace.
+ * @param __n1 Number of characters to be replaced.
+ * @param __s C string to insert.
+ * @param __n2 Number of characters from @a __s to use.
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos1 > size().
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [pos,pos + n1) from this
+ * string. In place, the first @a __n2 characters of @a __s
+ * are inserted, or all of @a __s if @a __n2 is too large. If
+ * @a __pos is beyond end of string, out_of_range is thrown.
+ * If the length of result exceeds max_size(), length_error is
+ * thrown. The value of the string doesn't change if an error
+ * is thrown.
+ */
+ __versa_string&
+ replace(size_type __pos, size_type __n1, const _CharT* __s,
+ size_type __n2)
+ {
+ __glibcxx_requires_string_len(__s, __n2);
+ return _M_replace(_M_check(__pos, "__versa_string::replace"),
+ _M_limit(__pos, __n1), __s, __n2);
+ }
+
+ /**
+ * @brief Replace characters with value of a C string.
+ * @param __pos Index of first character to replace.
+ * @param __n1 Number of characters to be replaced.
+ * @param __s C string to insert.
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos > size().
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [pos,pos + n1) from this
+ * string. In place, the first @a __n characters of @a __s are
+ * inserted. If @a pos is beyond end of string, out_of_range
+ * is thrown. If the length of result exceeds max_size(),
+ * length_error is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ __versa_string&
+ replace(size_type __pos, size_type __n1, const _CharT* __s)
+ {
+ __glibcxx_requires_string(__s);
+ return this->replace(__pos, __n1, __s, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Replace characters with multiple characters.
+ * @param __pos Index of first character to replace.
+ * @param __n1 Number of characters to be replaced.
+ * @param __n2 Number of characters to insert.
+ * @param __c Character to insert.
+ * @return Reference to this string.
+ * @throw std::out_of_range If @a __pos > size().
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [pos,pos + n1) from this
+ * string. In place, @a __n2 copies of @a __c are inserted.
+ * If @a __pos is beyond end of string, out_of_range is thrown.
+ * If the length of result exceeds max_size(), length_error is
+ * thrown. The value of the string doesn't change if an error
+ * is thrown.
+ */
+ __versa_string&
+ replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c)
+ { return _M_replace_aux(_M_check(__pos, "__versa_string::replace"),
+ _M_limit(__pos, __n1), __n2, __c); }
+
+ /**
+ * @brief Replace range of characters with string.
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __str String value to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place, the
+ * value of @a __str is inserted. If the length of result
+ * exceeds max_size(), length_error is thrown. The value of
+ * the string doesn't change if an error is thrown.
+ */
+ __versa_string&
+ replace(iterator __i1, iterator __i2, const __versa_string& __str)
+ { return this->replace(__i1, __i2, __str._M_data(), __str.size()); }
+
+ /**
+ * @brief Replace range of characters with C substring.
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __s C string value to insert.
+ * @param __n Number of characters from s to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place, the
+ * first @a n characters of @a __s are inserted. If the length
+ * of result exceeds max_size(), length_error is thrown. The
+ * value of the string doesn't change if an error is thrown.
+ */
+ __versa_string&
+ replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n);
+ }
+
+ /**
+ * @brief Replace range of characters with C string.
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __s C string value to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place, the
+ * characters of @a __s are inserted. If the length of result
+ * exceeds max_size(), length_error is thrown. The value of
+ * the string doesn't change if an error is thrown.
+ */
+ __versa_string&
+ replace(iterator __i1, iterator __i2, const _CharT* __s)
+ {
+ __glibcxx_requires_string(__s);
+ return this->replace(__i1, __i2, __s, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Replace range of characters with multiple characters
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __n Number of characters to insert.
+ * @param __c Character to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place, @a
+ * __n copies of @a __c are inserted. If the length of result
+ * exceeds max_size(), length_error is thrown. The value of
+ * the string doesn't change if an error is thrown.
+ */
+ __versa_string&
+ replace(iterator __i1, iterator __i2, size_type __n, _CharT __c)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c);
+ }
+
+ /**
+ * @brief Replace range of characters with range.
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __k1 Iterator referencing start of range to insert.
+ * @param __k2 Iterator referencing end of range to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place,
+ * characters in the range [k1,k2) are inserted. If the length
+ * of result exceeds max_size(), length_error is thrown. The
+ * value of the string doesn't change if an error is thrown.
+ */
+ template<class _InputIterator>
+ __versa_string&
+ replace(iterator __i1, iterator __i2,
+ _InputIterator __k1, _InputIterator __k2)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ __glibcxx_requires_valid_range(__k1, __k2);
+ typedef typename std::__is_integer<_InputIterator>::__type _Integral;
+ return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral());
+ }
+
+ // Specializations for the common case of pointer and iterator:
+ // useful to avoid the overhead of temporary buffering in _M_replace.
+ __versa_string&
+ replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ __glibcxx_requires_valid_range(__k1, __k2);
+ return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
+ __k1, __k2 - __k1);
+ }
+
+ __versa_string&
+ replace(iterator __i1, iterator __i2,
+ const _CharT* __k1, const _CharT* __k2)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ __glibcxx_requires_valid_range(__k1, __k2);
+ return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
+ __k1, __k2 - __k1);
+ }
+
+ __versa_string&
+ replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ __glibcxx_requires_valid_range(__k1, __k2);
+ return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
+ __k1.base(), __k2 - __k1);
+ }
+
+ __versa_string&
+ replace(iterator __i1, iterator __i2,
+ const_iterator __k1, const_iterator __k2)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
+ && __i2 <= _M_iend());
+ __glibcxx_requires_valid_range(__k1, __k2);
+ return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
+ __k1.base(), __k2 - __k1);
+ }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Replace range of characters with initializer_list.
+ * @param __i1 Iterator referencing start of range to replace.
+ * @param __i2 Iterator referencing end of range to replace.
+ * @param __l The initializer_list of characters to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place,
+ * characters in the range [k1,k2) are inserted. If the length
+ * of result exceeds max_size(), length_error is thrown. The
+ * value of the string doesn't change if an error is thrown.
+ */
+ __versa_string& replace(iterator __i1, iterator __i2,
+ std::initializer_list<_CharT> __l)
+ { return this->replace(__i1, __i2, __l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+ private:
+ template<class _Integer>
+ __versa_string&
+ _M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n,
+ _Integer __val, std::__true_type)
+ { return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); }
+
+ template<class _InputIterator>
+ __versa_string&
+ _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
+ _InputIterator __k2, std::__false_type);
+
+ __versa_string&
+ _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
+ _CharT __c);
+
+ __versa_string&
+ _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
+ const size_type __len2);
+
+ __versa_string&
+ _M_append(const _CharT* __s, size_type __n);
+
+ public:
+
+ /**
+ * @brief Copy substring into C string.
+ * @param __s C string to copy value into.
+ * @param __n Number of characters to copy.
+ * @param __pos Index of first character to copy.
+ * @return Number of characters actually copied
+ * @throw std::out_of_range If pos > size().
+ *
+ * Copies up to @a __n characters starting at @a __pos into the
+ * C string @a s. If @a __pos is greater than size(),
+ * out_of_range is thrown.
+ */
+ size_type
+ copy(_CharT* __s, size_type __n, size_type __pos = 0) const;
+
+ /**
+ * @brief Swap contents with another string.
+ * @param __s String to swap with.
+ *
+ * Exchanges the contents of this string with that of @a __s in
+ * constant time.
+ */
+ void
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ swap(__versa_string&& __s)
+#else
+ swap(__versa_string& __s)
+#endif
+ { this->_M_swap(__s); }
+
+ // String operations:
+ /**
+ * @brief Return const pointer to null-terminated contents.
+ *
+ * This is a handle to internal data. Do not modify or dire things may
+ * happen.
+ */
+ const _CharT*
+ c_str() const
+ { return this->_M_data(); }
+
+ /**
+ * @brief Return const pointer to contents.
+ *
+ * This is a handle to internal data. Do not modify or dire things may
+ * happen.
+ */
+ const _CharT*
+ data() const
+ { return this->_M_data(); }
+
+ /**
+ * @brief Return copy of allocator used to construct this string.
+ */
+ allocator_type
+ get_allocator() const
+ { return allocator_type(this->_M_get_allocator()); }
+
+ /**
+ * @brief Find position of a C substring.
+ * @param __s C string to locate.
+ * @param __pos Index of character to search from.
+ * @param __n Number of characters from @a __s to search for.
+ * @return Index of start of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for the first @a
+ * __n characters in @a __s within this string. If found,
+ * returns the index where it begins. If not found, returns
+ * npos.
+ */
+ size_type
+ find(const _CharT* __s, size_type __pos, size_type __n) const;
+
+ /**
+ * @brief Find position of a string.
+ * @param __str String to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of start of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for value of @a
+ * __str within this string. If found, returns the index where
+ * it begins. If not found, returns npos.
+ */
+ size_type
+ find(const __versa_string& __str, size_type __pos = 0) const
+ { return this->find(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find position of a C string.
+ * @param __s C string to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of start of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for the value of @a
+ * __s within this string. If found, returns the index where
+ * it begins. If not found, returns npos.
+ */
+ size_type
+ find(const _CharT* __s, size_type __pos = 0) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->find(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find position of a character.
+ * @param __c Character to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for @a __c within
+ * this string. If found, returns the index where it was
+ * found. If not found, returns npos.
+ */
+ size_type
+ find(_CharT __c, size_type __pos = 0) const;
+
+ /**
+ * @brief Find last position of a string.
+ * @param __str String to locate.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of start of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for value of @a
+ * __str within this string. If found, returns the index where
+ * it begins. If not found, returns npos.
+ */
+ size_type
+ rfind(const __versa_string& __str, size_type __pos = npos) const
+ { return this->rfind(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find last position of a C substring.
+ * @param __s C string to locate.
+ * @param __pos Index of character to search back from.
+ * @param __n Number of characters from s to search for.
+ * @return Index of start of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for the first @a
+ * __n characters in @a __s within this string. If found,
+ * returns the index where it begins. If not found, returns
+ * npos.
+ */
+ size_type
+ rfind(const _CharT* __s, size_type __pos, size_type __n) const;
+
+ /**
+ * @brief Find last position of a C string.
+ * @param __s C string to locate.
+ * @param __pos Index of character to start search at (default end).
+ * @return Index of start of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for the value of
+ * @a __s within this string. If found, returns the index
+ * where it begins. If not found, returns npos.
+ */
+ size_type
+ rfind(const _CharT* __s, size_type __pos = npos) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->rfind(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find last position of a character.
+ * @param __c Character to locate.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for @a __c within
+ * this string. If found, returns the index where it was
+ * found. If not found, returns npos.
+ */
+ size_type
+ rfind(_CharT __c, size_type __pos = npos) const;
+
+ /**
+ * @brief Find position of a character of string.
+ * @param __str String containing characters to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for one of the characters of
+ * @a __str within this string. If found, returns the index where it was
+ * found. If not found, returns npos.
+ */
+ size_type
+ find_first_of(const __versa_string& __str, size_type __pos = 0) const
+ { return this->find_first_of(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find position of a character of C substring.
+ * @param __s String containing characters to locate.
+ * @param __pos Index of character to search from.
+ * @param __n Number of characters from s to search for.
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for one of the
+ * first @a __n characters of @a __s within this string. If
+ * found, returns the index where it was found. If not found,
+ * returns npos.
+ */
+ size_type
+ find_first_of(const _CharT* __s, size_type __pos, size_type __n) const;
+
+ /**
+ * @brief Find position of a character of C string.
+ * @param __s String containing characters to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for one of the
+ * characters of @a __s within this string. If found, returns
+ * the index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_first_of(const _CharT* __s, size_type __pos = 0) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->find_first_of(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find position of a character.
+ * @param __c Character to locate.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for the character
+ * @a __c within this string. If found, returns the index
+ * where it was found. If not found, returns npos.
+ *
+ * Note: equivalent to find(c, pos).
+ */
+ size_type
+ find_first_of(_CharT __c, size_type __pos = 0) const
+ { return this->find(__c, __pos); }
+
+ /**
+ * @brief Find last position of a character of string.
+ * @param __str String containing characters to locate.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for one of the
+ * characters of @a __str within this string. If found,
+ * returns the index where it was found. If not found, returns
+ * npos.
+ */
+ size_type
+ find_last_of(const __versa_string& __str, size_type __pos = npos) const
+ { return this->find_last_of(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find last position of a character of C substring.
+ * @param __s C string containing characters to locate.
+ * @param __pos Index of character to search back from.
+ * @param __n Number of characters from s to search for.
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for one of the
+ * first @a __n characters of @a __s within this string. If
+ * found, returns the index where it was found. If not found,
+ * returns npos.
+ */
+ size_type
+ find_last_of(const _CharT* __s, size_type __pos, size_type __n) const;
+
+ /**
+ * @brief Find last position of a character of C string.
+ * @param __s C string containing characters to locate.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for one of the
+ * characters of @a __s within this string. If found, returns
+ * the index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_last_of(const _CharT* __s, size_type __pos = npos) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->find_last_of(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find last position of a character.
+ * @param __c Character to locate.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for @a __c within
+ * this string. If found, returns the index where it was
+ * found. If not found, returns npos.
+ *
+ * Note: equivalent to rfind(c, pos).
+ */
+ size_type
+ find_last_of(_CharT __c, size_type __pos = npos) const
+ { return this->rfind(__c, __pos); }
+
+ /**
+ * @brief Find position of a character not in string.
+ * @param __str String containing characters to avoid.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for a character not
+ * contained in @a __str within this string. If found, returns
+ * the index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_first_not_of(const __versa_string& __str, size_type __pos = 0) const
+ { return this->find_first_not_of(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find position of a character not in C substring.
+ * @param __s C string containing characters to avoid.
+ * @param __pos Index of character to search from.
+ * @param __n Number of characters from s to consider.
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for a character not
+ * contained in the first @a __n characters of @a __s within
+ * this string. If found, returns the index where it was
+ * found. If not found, returns npos.
+ */
+ size_type
+ find_first_not_of(const _CharT* __s, size_type __pos,
+ size_type __n) const;
+
+ /**
+ * @brief Find position of a character not in C string.
+ * @param __s C string containing characters to avoid.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for a character not
+ * contained in @a __s within this string. If found, returns
+ * the index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_first_not_of(const _CharT* __s, size_type __pos = 0) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->find_first_not_of(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find position of a different character.
+ * @param __c Character to avoid.
+ * @param __pos Index of character to search from (default 0).
+ * @return Index of first occurrence.
+ *
+ * Starting from @a __pos, searches forward for a character
+ * other than @a __c within this string. If found, returns the
+ * index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_first_not_of(_CharT __c, size_type __pos = 0) const;
+
+ /**
+ * @brief Find last position of a character not in string.
+ * @param __str String containing characters to avoid.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for a character
+ * not contained in @a __str within this string. If found,
+ * returns the index where it was found. If not found, returns
+ * npos.
+ */
+ size_type
+ find_last_not_of(const __versa_string& __str,
+ size_type __pos = npos) const
+ { return this->find_last_not_of(__str.data(), __pos, __str.size()); }
+
+ /**
+ * @brief Find last position of a character not in C substring.
+ * @param __s C string containing characters to avoid.
+ * @param __pos Index of character to search back from.
+ * @param __n Number of characters from s to consider.
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for a character
+ * not contained in the first @a __n characters of @a __s
+ * within this string. If found, returns the index where it
+ * was found. If not found, returns npos.
+ */
+ size_type
+ find_last_not_of(const _CharT* __s, size_type __pos,
+ size_type __n) const;
+ /**
+ * @brief Find last position of a character not in C string.
+ * @param __s C string containing characters to avoid.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for a character
+ * not contained in @a __s within this string. If found,
+ * returns the index where it was found. If not found, returns
+ * npos.
+ */
+ size_type
+ find_last_not_of(const _CharT* __s, size_type __pos = npos) const
+ {
+ __glibcxx_requires_string(__s);
+ return this->find_last_not_of(__s, __pos, traits_type::length(__s));
+ }
+
+ /**
+ * @brief Find last position of a different character.
+ * @param __c Character to avoid.
+ * @param __pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
+ *
+ * Starting from @a __pos, searches backward for a character
+ * other than @a __c within this string. If found, returns the
+ * index where it was found. If not found, returns npos.
+ */
+ size_type
+ find_last_not_of(_CharT __c, size_type __pos = npos) const;
+
+ /**
+ * @brief Get a substring.
+ * @param __pos Index of first character (default 0).
+ * @param __n Number of characters in substring (default remainder).
+ * @return The new string.
+ * @throw std::out_of_range If pos > size().
+ *
+ * Construct and return a new string using the @a __n
+ * characters starting at @a __pos. If the string is too
+ * short, use the remainder of the characters. If @a __pos is
+ * beyond the end of the string, out_of_range is thrown.
+ */
+ __versa_string
+ substr(size_type __pos = 0, size_type __n = npos) const
+ {
+ return __versa_string(*this, _M_check(__pos, "__versa_string::substr"),
+ __n);
+ }
+
+ /**
+ * @brief Compare to a string.
+ * @param __str String to compare against.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Returns an integer < 0 if this string is ordered before @a
+ * __str, 0 if their values are equivalent, or > 0 if this
+ * string is ordered after @a __str. Determines the effective
+ * length rlen of the strings to compare as the smallest of
+ * size() and str.size(). The function then compares the two
+ * strings by calling traits::compare(data(), str.data(),rlen).
+ * If the result of the comparison is nonzero returns it,
+ * otherwise the shorter one is ordered first.
+ */
+ int
+ compare(const __versa_string& __str) const
+ {
+ if (this->_M_compare(__str))
+ return 0;
+
+ const size_type __size = this->size();
+ const size_type __osize = __str.size();
+ const size_type __len = std::min(__size, __osize);
+
+ int __r = traits_type::compare(this->_M_data(), __str.data(), __len);
+ if (!__r)
+ __r = _S_compare(__size, __osize);
+ return __r;
+ }
+
+ /**
+ * @brief Compare substring to a string.
+ * @param __pos Index of first character of substring.
+ * @param __n Number of characters in substring.
+ * @param __str String to compare against.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Form the substring of this string from the @a __n characters
+ * starting at @a __pos. Returns an integer < 0 if the
+ * substring is ordered before @a __str, 0 if their values are
+ * equivalent, or > 0 if the substring is ordered after @a
+ * __str. Determines the effective length rlen of the strings
+ * to compare as the smallest of the length of the substring
+ * and @a __str.size(). The function then compares the two
+ * strings by calling
+ * traits::compare(substring.data(),str.data(),rlen). If the
+ * result of the comparison is nonzero returns it, otherwise
+ * the shorter one is ordered first.
+ */
+ int
+ compare(size_type __pos, size_type __n,
+ const __versa_string& __str) const;
+
+ /**
+ * @brief Compare substring to a substring.
+ * @param __pos1 Index of first character of substring.
+ * @param __n1 Number of characters in substring.
+ * @param __str String to compare against.
+ * @param __pos2 Index of first character of substring of str.
+ * @param __n2 Number of characters in substring of str.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Form the substring of this string from the @a __n1
+ * characters starting at @a __pos1. Form the substring of @a
+ * __str from the @a __n2 characters starting at @a __pos2.
+ * Returns an integer < 0 if this substring is ordered before
+ * the substring of @a __str, 0 if their values are equivalent,
+ * or > 0 if this substring is ordered after the substring of
+ * @a __str. Determines the effective length rlen of the
+ * strings to compare as the smallest of the lengths of the
+ * substrings. The function then compares the two strings by
+ * calling
+ * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen).
+ * If the result of the comparison is nonzero returns it,
+ * otherwise the shorter one is ordered first.
+ */
+ int
+ compare(size_type __pos1, size_type __n1, const __versa_string& __str,
+ size_type __pos2, size_type __n2) const;
+
+ /**
+ * @brief Compare to a C string.
+ * @param __s C string to compare against.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Returns an integer < 0 if this string is ordered before @a
+ * __s, 0 if their values are equivalent, or > 0 if this string
+ * is ordered after @a __s. Determines the effective length
+ * rlen of the strings to compare as the smallest of size() and
+ * the length of a string constructed from @a __s. The
+ * function then compares the two strings by calling
+ * traits::compare(data(),s,rlen). If the result of the
+ * comparison is nonzero returns it, otherwise the shorter one
+ * is ordered first.
+ */
+ int
+ compare(const _CharT* __s) const;
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 5 String::compare specification questionable
+ /**
+ * @brief Compare substring to a C string.
+ * @param __pos Index of first character of substring.
+ * @param __n1 Number of characters in substring.
+ * @param __s C string to compare against.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Form the substring of this string from the @a __n1
+ * characters starting at @a __pos. Returns an integer < 0 if
+ * the substring is ordered before @a __s, 0 if their values
+ * are equivalent, or > 0 if the substring is ordered after @a
+ * __s. Determines the effective length rlen of the strings to
+ * compare as the smallest of the length of the substring and
+ * the length of a string constructed from @a __s. The
+ * function then compares the two string by calling
+ * traits::compare(substring.data(),s,rlen). If the result of
+ * the comparison is nonzero returns it, otherwise the shorter
+ * one is ordered first.
+ */
+ int
+ compare(size_type __pos, size_type __n1, const _CharT* __s) const;
+
+ /**
+ * @brief Compare substring against a character array.
+ * @param __pos1 Index of first character of substring.
+ * @param __n1 Number of characters in substring.
+ * @param __s character array to compare against.
+ * @param __n2 Number of characters of s.
+ * @return Integer < 0, 0, or > 0.
+ *
+ * Form the substring of this string from the @a __n1
+ * characters starting at @a __pos1. Form a string from the
+ * first @a __n2 characters of @a __s. Returns an integer < 0
+ * if this substring is ordered before the string from @a __s,
+ * 0 if their values are equivalent, or > 0 if this substring
+ * is ordered after the string from @a __s. Determines the
+ * effective length rlen of the strings to compare as the
+ * smallest of the length of the substring and @a __n2. The
+ * function then compares the two strings by calling
+ * traits::compare(substring.data(),s,rlen). If the result of
+ * the comparison is nonzero returns it, otherwise the shorter
+ * one is ordered first.
+ *
+ * NB: s must have at least n2 characters, '\\0' has no special
+ * meaning.
+ */
+ int
+ compare(size_type __pos, size_type __n1, const _CharT* __s,
+ size_type __n2) const;
+ };
+
+ // operator+
+ /**
+ * @brief Concatenate two strings.
+ * @param __lhs First string.
+ * @param __rhs Last string.
+ * @return New string with value of @a __lhs followed by @a __rhs.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ __versa_string<_CharT, _Traits, _Alloc, _Base>
+ operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
+
+ /**
+ * @brief Concatenate C string and string.
+ * @param __lhs First string.
+ * @param __rhs Last string.
+ * @return New string with value of @a __lhs followed by @a __rhs.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ __versa_string<_CharT, _Traits, _Alloc, _Base>
+ operator+(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
+
+ /**
+ * @brief Concatenate character and string.
+ * @param __lhs First string.
+ * @param __rhs Last string.
+ * @return New string with @a __lhs followed by @a __rhs.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ __versa_string<_CharT, _Traits, _Alloc, _Base>
+ operator+(_CharT __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
+
+ /**
+ * @brief Concatenate string and C string.
+ * @param __lhs First string.
+ * @param __rhs Last string.
+ * @return New string with @a __lhs followed by @a __rhs.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ __versa_string<_CharT, _Traits, _Alloc, _Base>
+ operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs);
+
+ /**
+ * @brief Concatenate string and character.
+ * @param __lhs First string.
+ * @param __rhs Last string.
+ * @return New string with @a __lhs followed by @a __rhs.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ __versa_string<_CharT, _Traits, _Alloc, _Base>
+ operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ _CharT __rhs);
+
+ // operator ==
+ /**
+ * @brief Test equivalence of two strings.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator==(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __lhs.compare(__rhs) == 0; }
+
+ template<typename _CharT,
+ template <typename, typename, typename> class _Base>
+ inline typename __enable_if<std::__is_char<_CharT>::__value, bool>::__type
+ operator==(const __versa_string<_CharT, std::char_traits<_CharT>,
+ std::allocator<_CharT>, _Base>& __lhs,
+ const __versa_string<_CharT, std::char_traits<_CharT>,
+ std::allocator<_CharT>, _Base>& __rhs)
+ { return (__lhs.size() == __rhs.size()
+ && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(),
+ __lhs.size())); }
+
+ /**
+ * @brief Test equivalence of C string and string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator==(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __rhs.compare(__lhs) == 0; }
+
+ /**
+ * @brief Test equivalence of string and C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator==(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return __lhs.compare(__rhs) == 0; }
+
+ // operator !=
+ /**
+ * @brief Test difference of two strings.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator!=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return !(__lhs == __rhs); }
+
+ /**
+ * @brief Test difference of C string and string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator!=(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return !(__lhs == __rhs); }
+
+ /**
+ * @brief Test difference of string and C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator!=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return !(__lhs == __rhs); }
+
+ // operator <
+ /**
+ * @brief Test if string precedes string.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs precedes @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __lhs.compare(__rhs) < 0; }
+
+ /**
+ * @brief Test if string precedes C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs precedes @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return __lhs.compare(__rhs) < 0; }
+
+ /**
+ * @brief Test if C string precedes string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __lhs precedes @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __rhs.compare(__lhs) > 0; }
+
+ // operator >
+ /**
+ * @brief Test if string follows string.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs follows @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __lhs.compare(__rhs) > 0; }
+
+ /**
+ * @brief Test if string follows C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs follows @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return __lhs.compare(__rhs) > 0; }
+
+ /**
+ * @brief Test if C string follows string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __lhs follows @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __rhs.compare(__lhs) < 0; }
+
+ // operator <=
+ /**
+ * @brief Test if string doesn't follow string.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __lhs.compare(__rhs) <= 0; }
+
+ /**
+ * @brief Test if string doesn't follow C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return __lhs.compare(__rhs) <= 0; }
+
+ /**
+ * @brief Test if C string doesn't follow string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator<=(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __rhs.compare(__lhs) >= 0; }
+
+ // operator >=
+ /**
+ * @brief Test if string doesn't precede string.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __lhs.compare(__rhs) >= 0; }
+
+ /**
+ * @brief Test if string doesn't precede C string.
+ * @param __lhs String.
+ * @param __rhs C string.
+ * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ const _CharT* __rhs)
+ { return __lhs.compare(__rhs) >= 0; }
+
+ /**
+ * @brief Test if C string doesn't precede string.
+ * @param __lhs C string.
+ * @param __rhs String.
+ * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline bool
+ operator>=(const _CharT* __lhs,
+ const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { return __rhs.compare(__lhs) <= 0; }
+
+ /**
+ * @brief Swap contents of two strings.
+ * @param __lhs First string.
+ * @param __rhs Second string.
+ *
+ * Exchanges the contents of @a __lhs and @a __rhs in constant time.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline void
+ swap(__versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { __lhs.swap(__rhs); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline void
+ swap(__versa_string<_CharT, _Traits, _Alloc, _Base>&& __lhs,
+ __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
+ { __lhs.swap(__rhs); }
+
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline void
+ swap(__versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
+ __versa_string<_CharT, _Traits, _Alloc, _Base>&& __rhs)
+ { __lhs.swap(__rhs); }
+#endif
+
+_GLIBCXX_END_NAMESPACE
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+ /**
+ * @brief Read stream into a string.
+ * @param __is Input stream.
+ * @param __str Buffer to store into.
+ * @return Reference to the input stream.
+ *
+ * Stores characters from @a __is into @a __str until whitespace is
+ * found, the end of the stream is encountered, or str.max_size()
+ * is reached. If is.width() is non-zero, that is the limit on the
+ * number of characters stored into @a __str. Any previous
+ * contents of @a __str are erased.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ basic_istream<_CharT, _Traits>&
+ operator>>(basic_istream<_CharT, _Traits>& __is,
+ __gnu_cxx::__versa_string<_CharT, _Traits,
+ _Alloc, _Base>& __str);
+
+ /**
+ * @brief Write string to a stream.
+ * @param __os Output stream.
+ * @param __str String to write out.
+ * @return Reference to the output stream.
+ *
+ * Output characters of @a __str into os following the same rules as for
+ * writing a C string.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline basic_ostream<_CharT, _Traits>&
+ operator<<(basic_ostream<_CharT, _Traits>& __os,
+ const __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc,
+ _Base>& __str)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 586. string inserter not a formatted function
+ return __ostream_insert(__os, __str.data(), __str.size());
+ }
+
+ /**
+ * @brief Read a line from stream into a string.
+ * @param __is Input stream.
+ * @param __str Buffer to store into.
+ * @param __delim Character marking end of line.
+ * @return Reference to the input stream.
+ *
+ * Stores characters from @a __is into @a __str until @a __delim is
+ * found, the end of the stream is encountered, or str.max_size()
+ * is reached. If is.width() is non-zero, that is the limit on the
+ * number of characters stored into @a __str. Any previous
+ * contents of @a __str are erased. If @a delim was encountered,
+ * it is extracted but not stored into @a __str.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ basic_istream<_CharT, _Traits>&
+ getline(basic_istream<_CharT, _Traits>& __is,
+ __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str,
+ _CharT __delim);
+
+ /**
+ * @brief Read a line from stream into a string.
+ * @param __is Input stream.
+ * @param __str Buffer to store into.
+ * @return Reference to the input stream.
+ *
+ * Stores characters from is into @a __str until '\n' is found, the
+ * end of the stream is encountered, or str.max_size() is reached.
+ * If is.width() is non-zero, that is the limit on the number of
+ * characters stored into @a __str. Any previous contents of @a
+ * __str are erased. If end of line was encountered, it is
+ * extracted but not stored into @a __str.
+ */
+ template<typename _CharT, typename _Traits, typename _Alloc,
+ template <typename, typename, typename> class _Base>
+ inline basic_istream<_CharT, _Traits>&
+ getline(basic_istream<_CharT, _Traits>& __is,
+ __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str)
+ { return getline(__is, __str, __is.widen('\n')); }
+
+_GLIBCXX_END_NAMESPACE
+
+#if (defined(__GXX_EXPERIMENTAL_CXX0X__) && defined(_GLIBCXX_USE_C99))
+
+#include <ext/string_conversions.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+ // 21.4 Numeric Conversions [string.conversions].
+ inline int
+ stoi(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(),
+ __idx, __base); }
+
+ inline long
+ stol(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long
+ stoul(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(),
+ __idx, __base); }
+
+ inline long long
+ stoll(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long long
+ stoull(const __vstring& __str, std::size_t* __idx, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(),
+ __idx, __base); }
+
+ // NB: strtof vs strtod.
+ inline float
+ stof(const __vstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
+
+ inline double
+ stod(const __vstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
+
+ inline long double
+ stold(const __vstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
+
+ // NB: (v)snprintf vs sprintf.
+ inline __vstring
+ to_string(long long __val)
+ { return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf,
+ 4 * sizeof(long long),
+ "%lld", __val); }
+
+ inline __vstring
+ to_string(unsigned long long __val)
+ { return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf,
+ 4 * sizeof(unsigned long long),
+ "%llu", __val); }
+
+ inline __vstring
+ to_string(long double __val)
+ {
+ const int __n = __numeric_traits<long double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf, __n,
+ "%Lf", __val);
+ }
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+ inline int
+ stoi(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(),
+ __idx, __base); }
+
+ inline long
+ stol(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long
+ stoul(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(),
+ __idx, __base); }
+
+ inline long long
+ stoll(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long long
+ stoull(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(),
+ __idx, __base); }
+
+ // NB: wcstof vs wcstod.
+ inline float
+ stof(const __wvstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
+
+ inline double
+ stod(const __wvstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
+
+ inline long double
+ stold(const __wvstring& __str, std::size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
+
+ inline __wvstring
+ to_wstring(long long __val)
+ { return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf,
+ 4 * sizeof(long long),
+ L"%lld", __val); }
+
+ inline __wvstring
+ to_wstring(unsigned long long __val)
+ { return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf,
+ 4 * sizeof(unsigned long long),
+ L"%llu", __val); }
+
+ inline __wvstring
+ to_wstring(long double __val)
+ {
+ const int __n = __numeric_traits<long double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf, __n,
+ L"%Lf", __val);
+ }
+#endif
+
+_GLIBCXX_END_NAMESPACE
+
+#endif
+
+#ifndef _GLIBCXX_EXPORT_TEMPLATE
+# include "vstring.tcc"
+#endif
+
+#endif /* _VSTRING_H */
projects / msp430-gcc.git / blobdiff