// Character Traits for use by standard string and iostream -*- C++ -*-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-// 2006, 2007, 2008
-// Free Software Foundation, Inc.
+// Copyright (C) 1997-2014 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 2, or (at your option)
+// 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,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-/** @file char_traits.h
+// 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 bits/char_traits.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{string}
*/
//
#include <bits/postypes.h> // For streampos
#include <cwchar> // For WEOF, wmemmove, wmemset, etc.
-#ifndef _GLIBCXX_STDIO_MACROS
-# include <cstdio> // For EOF
-# define _CHAR_TRAITS_EOF EOF
-#else
-# define _CHAR_TRAITS_EOF (-1)
-#endif
-
-_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
* @brief Mapping from character type to associated types.
* may not be specialized for fundamental types, but classes in
* namespace __gnu_cxx may be.
*
- * See http://gcc.gnu.org/onlinedocs/libstdc++/21_strings/howto.html#5
- * for advice on how to make use of this class for "unusual" character
+ * See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt05ch13s03.html
+ * for advice on how to make use of this class for @a unusual character
* types. Also, check out include/ext/pod_char_traits.h.
*/
template<typename _CharT>
assign(char_type& __c1, const char_type& __c2)
{ __c1 = __c2; }
- static bool
+ static _GLIBCXX_CONSTEXPR bool
eq(const char_type& __c1, const char_type& __c2)
{ return __c1 == __c2; }
- static bool
+ static _GLIBCXX_CONSTEXPR bool
lt(const char_type& __c1, const char_type& __c2)
{ return __c1 < __c2; }
static char_type*
assign(char_type* __s, std::size_t __n, char_type __a);
- static char_type
+ static _GLIBCXX_CONSTEXPR char_type
to_char_type(const int_type& __c)
{ return static_cast<char_type>(__c); }
- static int_type
+ static _GLIBCXX_CONSTEXPR int_type
to_int_type(const char_type& __c)
{ return static_cast<int_type>(__c); }
- static bool
+ static _GLIBCXX_CONSTEXPR bool
eq_int_type(const int_type& __c1, const int_type& __c2)
{ return __c1 == __c2; }
- static int_type
+ static _GLIBCXX_CONSTEXPR int_type
eof()
- { return static_cast<int_type>(_CHAR_TRAITS_EOF); }
+ { return static_cast<int_type>(_GLIBCXX_STDIO_EOF); }
- static int_type
+ static _GLIBCXX_CONSTEXPR int_type
not_eof(const int_type& __c)
{ return !eq_int_type(__c, eof()) ? __c : to_int_type(char_type()); }
};
return __s;
}
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
-_GLIBCXX_BEGIN_NAMESPACE(std)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
// 21.1
/**
* __gnu_cxx::char_traits, it is possible to achieve a more
* appropriate definition by specializing __gnu_cxx::char_traits.
*
- * See http://gcc.gnu.org/onlinedocs/libstdc++/21_strings/howto.html#5
- * for advice on how to make use of this class for "unusual" character
+ * See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt05ch13s03.html
+ * for advice on how to make use of this class for @a unusual character
* types. Also, check out include/ext/pod_char_traits.h.
*/
template<class _CharT>
typedef mbstate_t state_type;
static void
- assign(char_type& __c1, const char_type& __c2)
+ assign(char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
{ __c1 = __c2; }
- static bool
- eq(const char_type& __c1, const char_type& __c2)
+ static _GLIBCXX_CONSTEXPR bool
+ eq(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
{ return __c1 == __c2; }
- static bool
- lt(const char_type& __c1, const char_type& __c2)
- { return __c1 < __c2; }
+ static _GLIBCXX_CONSTEXPR bool
+ lt(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
+ {
+ // LWG 467.
+ return (static_cast<unsigned char>(__c1)
+ < static_cast<unsigned char>(__c2));
+ }
static int
compare(const char_type* __s1, const char_type* __s2, size_t __n)
assign(char_type* __s, size_t __n, char_type __a)
{ return static_cast<char_type*>(__builtin_memset(__s, __a, __n)); }
- static char_type
- to_char_type(const int_type& __c)
+ static _GLIBCXX_CONSTEXPR char_type
+ to_char_type(const int_type& __c) _GLIBCXX_NOEXCEPT
{ return static_cast<char_type>(__c); }
// To keep both the byte 0xff and the eof symbol 0xffffffff
// from ending up as 0xffffffff.
- static int_type
- to_int_type(const char_type& __c)
+ static _GLIBCXX_CONSTEXPR int_type
+ to_int_type(const char_type& __c) _GLIBCXX_NOEXCEPT
{ return static_cast<int_type>(static_cast<unsigned char>(__c)); }
- static bool
- eq_int_type(const int_type& __c1, const int_type& __c2)
+ static _GLIBCXX_CONSTEXPR bool
+ eq_int_type(const int_type& __c1, const int_type& __c2) _GLIBCXX_NOEXCEPT
{ return __c1 == __c2; }
- static int_type
- eof() { return static_cast<int_type>(_CHAR_TRAITS_EOF); }
+ static _GLIBCXX_CONSTEXPR int_type
+ eof() _GLIBCXX_NOEXCEPT
+ { return static_cast<int_type>(_GLIBCXX_STDIO_EOF); }
- static int_type
- not_eof(const int_type& __c)
+ static _GLIBCXX_CONSTEXPR int_type
+ not_eof(const int_type& __c) _GLIBCXX_NOEXCEPT
{ return (__c == eof()) ? 0 : __c; }
};
typedef mbstate_t state_type;
static void
- assign(char_type& __c1, const char_type& __c2)
+ assign(char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
{ __c1 = __c2; }
- static bool
- eq(const char_type& __c1, const char_type& __c2)
+ static _GLIBCXX_CONSTEXPR bool
+ eq(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
{ return __c1 == __c2; }
- static bool
- lt(const char_type& __c1, const char_type& __c2)
+ static _GLIBCXX_CONSTEXPR bool
+ lt(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
{ return __c1 < __c2; }
static int
assign(char_type* __s, size_t __n, char_type __a)
{ return wmemset(__s, __a, __n); }
- static char_type
- to_char_type(const int_type& __c) { return char_type(__c); }
+ static _GLIBCXX_CONSTEXPR char_type
+ to_char_type(const int_type& __c) _GLIBCXX_NOEXCEPT
+ { return char_type(__c); }
- static int_type
- to_int_type(const char_type& __c) { return int_type(__c); }
+ static _GLIBCXX_CONSTEXPR int_type
+ to_int_type(const char_type& __c) _GLIBCXX_NOEXCEPT
+ { return int_type(__c); }
- static bool
- eq_int_type(const int_type& __c1, const int_type& __c2)
+ static _GLIBCXX_CONSTEXPR bool
+ eq_int_type(const int_type& __c1, const int_type& __c2) _GLIBCXX_NOEXCEPT
{ return __c1 == __c2; }
- static int_type
- eof() { return static_cast<int_type>(WEOF); }
+ static _GLIBCXX_CONSTEXPR int_type
+ eof() _GLIBCXX_NOEXCEPT
+ { return static_cast<int_type>(WEOF); }
- static int_type
- not_eof(const int_type& __c)
+ static _GLIBCXX_CONSTEXPR int_type
+ not_eof(const int_type& __c) _GLIBCXX_NOEXCEPT
{ return eq_int_type(__c, eof()) ? 0 : __c; }
};
#endif //_GLIBCXX_USE_WCHAR_T
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#if ((__cplusplus >= 201103L) \
+ && defined(_GLIBCXX_USE_C99_STDINT_TR1))
+
+#include <cstdint>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ template<>
+ struct char_traits<char16_t>
+ {
+ typedef char16_t char_type;
+ typedef uint_least16_t int_type;
+ typedef streamoff off_type;
+ typedef u16streampos pos_type;
+ typedef mbstate_t state_type;
+
+ static void
+ assign(char_type& __c1, const char_type& __c2) noexcept
+ { __c1 = __c2; }
+
+ static constexpr bool
+ eq(const char_type& __c1, const char_type& __c2) noexcept
+ { return __c1 == __c2; }
+
+ static constexpr bool
+ lt(const char_type& __c1, const char_type& __c2) noexcept
+ { return __c1 < __c2; }
+
+ static int
+ compare(const char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ if (lt(__s1[__i], __s2[__i]))
+ return -1;
+ else if (lt(__s2[__i], __s1[__i]))
+ return 1;
+ return 0;
+ }
+
+ static size_t
+ length(const char_type* __s)
+ {
+ size_t __i = 0;
+ while (!eq(__s[__i], char_type()))
+ ++__i;
+ return __i;
+ }
+
+ static const char_type*
+ find(const char_type* __s, size_t __n, const char_type& __a)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ if (eq(__s[__i], __a))
+ return __s + __i;
+ return 0;
+ }
+
+ static char_type*
+ move(char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ return (static_cast<char_type*>
+ (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
+ }
+
+ static char_type*
+ copy(char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ return (static_cast<char_type*>
+ (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
+ }
+
+ static char_type*
+ assign(char_type* __s, size_t __n, char_type __a)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ assign(__s[__i], __a);
+ return __s;
+ }
+
+ static constexpr char_type
+ to_char_type(const int_type& __c) noexcept
+ { return char_type(__c); }
+
+ static constexpr int_type
+ to_int_type(const char_type& __c) noexcept
+ { return int_type(__c); }
+
+ static constexpr bool
+ eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+ { return __c1 == __c2; }
+
+ static constexpr int_type
+ eof() noexcept
+ { return static_cast<int_type>(-1); }
+
+ static constexpr int_type
+ not_eof(const int_type& __c) noexcept
+ { return eq_int_type(__c, eof()) ? 0 : __c; }
+ };
+
+ template<>
+ struct char_traits<char32_t>
+ {
+ typedef char32_t char_type;
+ typedef uint_least32_t int_type;
+ typedef streamoff off_type;
+ typedef u32streampos pos_type;
+ typedef mbstate_t state_type;
+
+ static void
+ assign(char_type& __c1, const char_type& __c2) noexcept
+ { __c1 = __c2; }
+
+ static constexpr bool
+ eq(const char_type& __c1, const char_type& __c2) noexcept
+ { return __c1 == __c2; }
+
+ static constexpr bool
+ lt(const char_type& __c1, const char_type& __c2) noexcept
+ { return __c1 < __c2; }
+
+ static int
+ compare(const char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ if (lt(__s1[__i], __s2[__i]))
+ return -1;
+ else if (lt(__s2[__i], __s1[__i]))
+ return 1;
+ return 0;
+ }
+
+ static size_t
+ length(const char_type* __s)
+ {
+ size_t __i = 0;
+ while (!eq(__s[__i], char_type()))
+ ++__i;
+ return __i;
+ }
+
+ static const char_type*
+ find(const char_type* __s, size_t __n, const char_type& __a)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ if (eq(__s[__i], __a))
+ return __s + __i;
+ return 0;
+ }
+
+ static char_type*
+ move(char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ return (static_cast<char_type*>
+ (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
+ }
+
+ static char_type*
+ copy(char_type* __s1, const char_type* __s2, size_t __n)
+ {
+ return (static_cast<char_type*>
+ (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
+ }
+
+ static char_type*
+ assign(char_type* __s, size_t __n, char_type __a)
+ {
+ for (size_t __i = 0; __i < __n; ++__i)
+ assign(__s[__i], __a);
+ return __s;
+ }
+
+ static constexpr char_type
+ to_char_type(const int_type& __c) noexcept
+ { return char_type(__c); }
+
+ static constexpr int_type
+ to_int_type(const char_type& __c) noexcept
+ { return int_type(__c); }
+
+ static constexpr bool
+ eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+ { return __c1 == __c2; }
+
+ static constexpr int_type
+ eof() noexcept
+ { return static_cast<int_type>(-1); }
+
+ static constexpr int_type
+ not_eof(const int_type& __c) noexcept
+ { return eq_int_type(__c, eof()) ? 0 : __c; }
+ };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif
-#endif
+#endif // _CHAR_TRAITS_H
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