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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libstdc++-v3/include/ext/pod_char_traits.h
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/ext/pod_char_traits.h')
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diff --git a/gcc-4.9/libstdc++-v3/include/ext/pod_char_traits.h b/gcc-4.9/libstdc++-v3/include/ext/pod_char_traits.h
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+++ b/gcc-4.9/libstdc++-v3/include/ext/pod_char_traits.h
@@ -0,0 +1,192 @@
+// POD character, std::char_traits specialization -*- C++ -*-
+
+// Copyright (C) 2002-2014 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 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
+
+#pragma GCC system_header
+
+#include <string>
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // 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 _Value, typename _Int, typename _St = std::mbstate_t>
+ struct character
+ {
+ typedef _Value value_type;
+ typedef _Int int_type;
+ typedef _St state_type;
+ typedef character<_Value, _Int, _St> 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 _Value, typename _Int, typename _St>
+ inline bool
+ operator==(const character<_Value, _Int, _St>& lhs,
+ const character<_Value, _Int, _St>& rhs)
+ { return lhs.value == rhs.value; }
+
+ template<typename _Value, typename _Int, typename _St>
+ inline bool
+ operator<(const character<_Value, _Int, _St>& lhs,
+ const character<_Value, _Int, _St>& rhs)
+ { return lhs.value < rhs.value; }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ /// char_traits<__gnu_cxx::character> specialization.
+ template<typename _Value, typename _Int, typename _St>
+ struct char_traits<__gnu_cxx::character<_Value, _Int, _St> >
+ {
+ typedef __gnu_cxx::character<_Value, _Int, _St> 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_VERSION
+} // namespace
+
+#endif