Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / include / ext / pod_char_traits.h

diff --git a/libstdc++-v3/include/ext/pod_char_traits.h b/libstdc++-v3/include/ext/pod_char_traits.h
new file mode 100644 (file)
index 0000000..2797c1b
--- /dev/null
+++ b/libstdc++-v3/include/ext/pod_char_traits.h
@@ -0,0 +1,182 @@
+// POD character, std::char_traits specialization -*- C++ -*-
+
+// Copyright (C) 2002, 2003, 2004, 2005, 2007, 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/pod_char_traits.h
+ *  This file is a GNU extension to the Standard C++ Library.
+ */
+
+// Gabriel Dos Reis <gdr@integrable-solutions.net>
+// Benjamin Kosnik <bkoz@redhat.com>
+
+#ifndef _POD_CHAR_TRAITS_H
+#define _POD_CHAR_TRAITS_H 1
+
+#include <string>
+
+_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+
+  // POD character abstraction.
+  // NB: The char_type parameter is a subset of int_type, as to allow
+  // int_type to properly hold the full range of char_type values as
+  // well as EOF.
+  /// @brief A POD class that serves as a character abstraction class.
+  template<typename V, typename I, typename S = std::mbstate_t>
+    struct character
+    {
+      typedef V                                value_type;
+      typedef I                                int_type;
+      typedef S                                state_type;
+      typedef character<V, I, S>       char_type;
+
+      value_type       value;
+
+      template<typename V2>
+        static char_type
+        from(const V2& v)
+        {
+         char_type ret = { static_cast<value_type>(v) };
+         return ret;
+       }
+
+      template<typename V2>
+        static V2
+        to(const char_type& c)
+        {
+         V2 ret = { static_cast<V2>(c.value) };
+         return ret;
+       }
+
+    };
+
+  template<typename V, typename I, typename S>
+    inline bool
+    operator==(const character<V, I, S>& lhs, const character<V, I, S>& rhs)
+    { return lhs.value == rhs.value; }
+
+  template<typename V, typename I, typename S>
+    inline bool
+    operator<(const character<V, I, S>& lhs, const character<V, I, S>& rhs)
+    { return lhs.value < rhs.value; }
+
+_GLIBCXX_END_NAMESPACE
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+  /// char_traits<__gnu_cxx::character> specialization.
+  template<typename V, typename I, typename S>
+    struct char_traits<__gnu_cxx::character<V, I, S> >
+    {
+      typedef __gnu_cxx::character<V, I, S>    char_type;
+      typedef typename char_type::int_type     int_type;
+      typedef typename char_type::state_type   state_type;
+      typedef fpos<state_type>                 pos_type;
+      typedef streamoff                                off_type;
+
+      static void
+      assign(char_type& __c1, const char_type& __c2)
+      { __c1 = __c2; }
+
+      static bool
+      eq(const char_type& __c1, const char_type& __c2)
+      { return __c1 == __c2; }
+
+      static bool
+      lt(const char_type& __c1, const char_type& __c2)
+      { 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 (!eq(__s1[__i], __s2[__i]))
+           return lt(__s1[__i], __s2[__i]) ? -1 : 1;
+       return 0;
+      }
+
+      static size_t
+      length(const char_type* __s)
+      {
+       const char_type* __p = __s;
+       while (__p->value)
+         ++__p;
+       return (__p - __s);
+      }
+
+      static const char_type*
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      {
+       for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
+         if (*__p == __a)
+           return __p;
+       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)
+      {
+       std::copy(__s2, __s2 + __n, __s1);
+       return __s1;
+      }
+
+      static char_type*
+      assign(char_type* __s, size_t __n, char_type __a)
+      {
+       std::fill_n(__s, __n, __a);
+        return __s;
+      }
+
+      static char_type
+      to_char_type(const int_type& __i)
+      { return char_type::template from(__i); }
+
+      static int_type
+      to_int_type(const char_type& __c)
+      { return char_type::template to<int_type>(__c); }
+
+      static bool
+      eq_int_type(const int_type& __c1, const int_type& __c2)
+      { return __c1 == __c2; }
+
+      static int_type
+      eof() 
+      {
+       int_type __r = { -1 };
+       return __r;
+      }
+
+      static int_type
+      not_eof(const int_type& __c)
+      { return eq_int_type(__c, eof()) ? int_type() : __c; }
+    };
+
+_GLIBCXX_END_NAMESPACE
+
+#endif