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extern/stdcxx/4.2.1/examples/include/examples.h

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+/**************************************************************************
+ *
+ * examples.h - common definitions to condition example code for broken
+ *              compilers; must be #included last, _after_ all lib headers.
+ *
+ * The goal of this file is to allow completely conforming syntax
+ * in examples' code even with non-conforming compilers.
+ *
+ * $Id: examples.h 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#ifndef EXAMPLES_H_INCLUDED
+#define EXAMPLES_H_INCLUDED
+
+
+#ifdef _RWSTD_NO_NAMESPACE
+# define std
+#endif   // _RWSTD_NO_NAMESPACE
+
+
+#ifdef _RWSTD_NO_TYPENAME
+# define typename
+#endif   // _RWSTD_NO_TYPENAME
+
+
+#ifdef _RWSTD_NO_FOR_LOCAL_SCOPE
+#  define for if (0) ; else for
+#endif   // _RWSTD_NO_FOR_LOCAL_SCOPE
+
+#include <cstddef>  // for ptrdiff_t
+
+#ifdef _RWSTD_NO_LIBC_IN_STD
+
+_RWSTD_NAMESPACE (std) { 
+
+// accomdate compilers that don't have size_t in namespace std
+_USING (::size_t);
+_USING (::ptrdiff_t);
+
+}   // namespace std
+
+#endif   // _RWSTD_NO_LIBC_IN_STD
+
+
+#ifdef _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+// supply conforming versions of count, count_if and distance for platforms
+// that do not correctly support partial specialization of class templates
+
+_RWSTD_NAMESPACE (std) {     
+    
+template<class InputIter, class T>
+size_t count (InputIter a, InputIter b, const T& x)
+{
+    size_t n = 0;
+    count (a, b, x, n);
+    return n;
+}
+
+template<class InputIter, class T>
+size_t count_if (InputIter a, InputIter b, const T& x)
+{
+    size_t n = 0;
+    count_if (a, b, x, n);
+    return n;
+
+}
+
+template<class InputIter>
+size_t distance (InputIter a, InputIter b)
+{
+    size_t n = 0;
+    distance (a, b, n);
+    return n;
+} 
+
+}   // namespace std
+
+#endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+
+
+
+#ifdef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
+
+#if !defined (_MSC_VER) || _MSC_VER > 1300
+
+_RWSTD_NAMESPACE (std) { 
+
+#define has_facet fake_has_facet
+#define use_facet fake_use_facet
+
+// fake std::use_facet
+template <class Facet>
+struct has_facet
+{
+    has_facet (const std::locale &loc)
+
+#ifndef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
+
+        : result (std::has_facet<Facet>(loc)) { }
+
+#else
+
+        : result (std::has_facet (loc, (Facet*)0)) { }
+
+#endif   // _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
+
+    operator bool () const {
+        return result;
+    }
+
+    bool result;
+};
+
+
+// fake std::use_facet
+template <class Facet>
+struct use_facet
+{
+    use_facet (const std::locale &loc)
+        : facet (std::_USE_FACET (Facet, loc)) { }
+
+    operator const Facet& () const {
+        return facet;
+    }
+
+    const Facet &facet;
+};
+
+}   // namespace std
+
+#else   // if defined (_MSC_VER) && _MSC_VER <= 1300
+#  define _HAS_FACET(facet, locale)   has_facet (locale, (facet*)0)
+#endif   // !defined (_MSC_VER) || _MSC_VER > 1300
+
+#endif   // _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
+
+
+#ifdef _RWSTD_NO_EXCEPTIONS
+#  define try            if (1)
+#  define catch(ex)      else if (0) for (ex ; 0 ; )
+#  define throw(ignore)  abort ()
+#endif   // _RWSTD_NO_EXCEPTIONS
+
+
+#ifdef _RWSTD_NO_WCHAR_T
+
+// remove `L' from wide string literals
+#define L
+
+// fake wide stream objects
+#define wcin          cin
+#define wcout         cout
+#define wcerr         cerr
+#define wclog         clog
+
+// fake wide string and stringstream
+#define wstring       string
+#define wstringstream stringstream
+
+#define wchar_t       char
+
+#endif   // _RWSTD_NO_WCHAR_T
+
+
+// undefine macros #defined by some evil C libraries (e.g., MSVC)
+#undef max
+#undef min
+
+
+#endif   // EXAMPLES_H_INCLUDED