// Concept-checking control -*- C++ -*-
-// Copyright (C) 2001 Free Software Foundation, Inc.
+// Copyright (C) 2001, 2009, 2010 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// 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.
-// 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.
+// 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/>.
-#ifndef _GLIBCPP_CONCEPT_CHECK
-#define _GLIBCPP_CONCEPT_CHECK 1
+/** @file bits/concept_check.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{iterator}
+ */
-#pragma GCC system_header
-#include <bits/c++config.h>
+#ifndef _CONCEPT_CHECK_H
+#define _CONCEPT_CHECK_H 1
+#pragma GCC system_header
-// Concept-checking code is on by default unless users turn it off via any
-// of these methods:
-// - _GLIBCPP_NO_CONCEPT_CHECKS is a user hook; defining it disables the
-// checks.
-// - _STL_NO_CONCEPT_CHECKS is a user hook from the old STL implementation
-// specifically for this purpose; defining it disables the checks, in
-// case the user is expecting the old version.
-// - NDEBUG is the usual macro that kills assert(). Defining it will also
-// disable the checks, by the reasoning that if the user doesn't want
-// any runtime assertion code, then no space penalty for the checks
-// is desired either.
+#include <bits/c++config.h>
// All places in libstdc++-v3 where these are used, or /might/ be used, or
// don't need to be used, or perhaps /should/ be used, are commented with
// "concept requirements" (and maybe some more text). So grep like crazy
// if you're looking for additional places to use these.
+// Concept-checking code is off by default unless users turn it on via
+// configure options or editing c++config.h.
-#if defined(_GLIBCPP_NO_CONCEPT_CHECKS) || defined(_STL_NO_CONCEPT_CHECKS) \
- || defined(NDEBUG)
+#ifndef _GLIBCXX_CONCEPT_CHECKS
-#define __glibcpp_function_requires(...)
-#define __glibcpp_class_requires(_a,_b)
-#define __glibcpp_class_requires2(_a,_b,_c)
-#define __glibcpp_class_requires3(_a,_b,_c,_d)
-#define __glibcpp_class_requires4(_a,_b,_c,_d,_e)
+#define __glibcxx_function_requires(...)
+#define __glibcxx_class_requires(_a,_b)
+#define __glibcxx_class_requires2(_a,_b,_c)
+#define __glibcxx_class_requires3(_a,_b,_c,_d)
+#define __glibcxx_class_requires4(_a,_b,_c,_d,_e)
#else // the checks are on
// Note that the obvious and elegant approach of
//
-//#define glibcpp_function_requires(C) \
-// boost::function_requires< boost::C >()
+//#define glibcxx_function_requires(C) boost::function_requires< boost::C >()
//
// won't work due to concept templates with more than one parameter, e.g.,
// BinaryPredicateConcept. The preprocessor tries to split things up on
// parenthesis to hide the commas, because "boost::(Temp<Foo,Bar>)" isn't
// a valid instantiation pattern. Thus, we steal a feature from C99.
-#define __glibcpp_function_requires(...) \
- __gnu_cxx::__function_requires< __gnu_cxx::__VA_ARGS__ >()
-#define __glibcpp_class_requires(_a,_C) \
- _GLIBCPP_CLASS_REQUIRES(_a, __gnu_cxx, _C)
-#define __glibcpp_class_requires2(_a,_b,_C) \
- _GLIBCPP_CLASS_REQUIRES2(_a, _b, __gnu_cxx, _C)
-#define __glibcpp_class_requires3(_a,_b,_c,_C) \
- _GLIBCPP_CLASS_REQUIRES3(_a, _b, _c, __gnu_cxx, _C)
-#define __glibcpp_class_requires4(_a,_b,_c,_d,_C) \
- _GLIBCPP_CLASS_REQUIRES4(_a, _b, _c, _d, __gnu_cxx, _C)
+#define __glibcxx_function_requires(...) \
+ __gnu_cxx::__function_requires< __gnu_cxx::__VA_ARGS__ >();
+#define __glibcxx_class_requires(_a,_C) \
+ _GLIBCXX_CLASS_REQUIRES(_a, __gnu_cxx, _C);
+#define __glibcxx_class_requires2(_a,_b,_C) \
+ _GLIBCXX_CLASS_REQUIRES2(_a, _b, __gnu_cxx, _C);
+#define __glibcxx_class_requires3(_a,_b,_c,_C) \
+ _GLIBCXX_CLASS_REQUIRES3(_a, _b, _c, __gnu_cxx, _C);
+#define __glibcxx_class_requires4(_a,_b,_c,_d,_C) \
+ _GLIBCXX_CLASS_REQUIRES4(_a, _b, _c, _d, __gnu_cxx, _C);
#endif // enable/disable
-#endif // _GLIBCPP_CONCEPT_CHECK
-
+#endif // _GLIBCXX_CONCEPT_CHECK
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