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[lyx.git] / boost / boost / any.hpp

diff --git a/boost/boost/any.hpp b/boost/boost/any.hpp
index 4f8ce4b18612eaf1400900bdd252d19ac06be4f4..a8c654c373bc34d34fa024cc02d91bb62b85a4d4 100644 (file)
--- a/boost/boost/any.hpp
+++ b/boost/boost/any.hpp
@@ -14,6 +14,21 @@
 #include <typeinfo>
 
 #include "boost/config.hpp"
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/type_traits/is_reference.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/static_assert.hpp>
+
+// See boost/python/type_id.hpp
+// TODO: add BOOST_TYPEID_COMPARE_BY_NAME to config.hpp
+# if (defined(__GNUC__) && __GNUC__ >= 3) \
+ || defined(_AIX) \
+ || (   defined(__sgi) && defined(__host_mips)) \
+ || (defined(__hpux) && defined(__HP_aCC)) \
+ || (defined(linux) && defined(__INTEL_COMPILER) && defined(__ICC))
+#  define BOOST_AUX_ANY_TYPE_ID_NAME
+#include <cstring>
+# endif 
 
 namespace boost
 {
@@ -57,9 +72,9 @@ namespace boost
             return *this;
         }
 
-        any & operator=(const any & rhs)
+        any & operator=(any rhs)
         {
-            any(rhs).swap(*this);
+            rhs.swap(*this);
             return *this;
         }
 
@@ -84,7 +99,7 @@ namespace boost
         class placeholder
         {
         public: // structors
-    
+
             virtual ~placeholder()
             {
             }
@@ -94,7 +109,7 @@ namespace boost
             virtual const std::type_info & type() const = 0;
 
             virtual placeholder * clone() const = 0;
-    
+
         };
 
         template<typename ValueType>
@@ -123,6 +138,8 @@ namespace boost
 
             ValueType held;
 
+        private: // intentionally left unimplemented
+            holder & operator=(const holder &);
         };
 
 #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
@@ -132,6 +149,9 @@ namespace boost
         template<typename ValueType>
         friend ValueType * any_cast(any *);
 
+        template<typename ValueType>
+        friend ValueType * unsafe_any_cast(any *);
+
 #else
 
     public: // representation (public so any_cast can be non-friend)
@@ -155,34 +175,79 @@ namespace boost
     template<typename ValueType>
     ValueType * any_cast(any * operand)
     {
-        return operand && operand->type() == typeid(ValueType)
-                    ? &static_cast<any::holder<ValueType> *>(operand->content)->held
-                    : 0;
+        return operand && 
+#ifdef BOOST_AUX_ANY_TYPE_ID_NAME
+            std::strcmp(operand->type().name(), typeid(ValueType).name()) == 0
+#else
+            operand->type() == typeid(ValueType)
+#endif
+            ? &static_cast<any::holder<ValueType> *>(operand->content)->held
+            : 0;
     }
 
     template<typename ValueType>
-    const ValueType * any_cast(const any * operand)
+    inline const ValueType * any_cast(const any * operand)
     {
         return any_cast<ValueType>(const_cast<any *>(operand));
     }
 
     template<typename ValueType>
-    ValueType any_cast(const any & operand)
+    ValueType any_cast(any & operand)
     {
-        const ValueType * result = any_cast<ValueType>(&operand);
+        typedef BOOST_DEDUCED_TYPENAME remove_reference<ValueType>::type nonref;
+
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+        // If 'nonref' is still reference type, it means the user has not
+        // specialized 'remove_reference'.
+
+        // Please use BOOST_BROKEN_COMPILER_TYPE_TRAITS_SPECIALIZATION macro
+        // to generate specialization of remove_reference for your class
+        // See type traits library documentation for details
+        BOOST_STATIC_ASSERT(!is_reference<nonref>::value);
+#endif
+
+        nonref * result = any_cast<nonref>(&operand);
         if(!result)
-            throw bad_any_cast();
+            boost::throw_exception(bad_any_cast());
         return *result;
     }
 
+    template<typename ValueType>
+    inline ValueType any_cast(const any & operand)
+    {
+        typedef BOOST_DEDUCED_TYPENAME remove_reference<ValueType>::type nonref;
+
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+        // The comment in the above version of 'any_cast' explains when this
+        // assert is fired and what to do.
+        BOOST_STATIC_ASSERT(!is_reference<nonref>::value);
+#endif
+
+        return any_cast<const nonref &>(const_cast<any &>(operand));
+    }
+
+    // Note: The "unsafe" versions of any_cast are not part of the
+    // public interface and may be removed at any time. They are
+    // required where we know what type is stored in the any and can't
+    // use typeid() comparison, e.g., when our types may travel across
+    // different shared libraries.
+    template<typename ValueType>
+    inline ValueType * unsafe_any_cast(any * operand)
+    {
+        return &static_cast<any::holder<ValueType> *>(operand->content)->held;
+    }
+
+    template<typename ValueType>
+    inline const ValueType * unsafe_any_cast(const any * operand)
+    {
+        return unsafe_any_cast<ValueType>(const_cast<any *>(operand));
+    }
 }
 
 // Copyright Kevlin Henney, 2000, 2001, 2002. All rights reserved.
 //
-// Permission to use, copy, modify, and distribute this software for any
-// purpose is hereby granted without fee, provided that this copyright and
-// permissions notice appear in all copies and derivatives.
-//
-// This software is provided "as is" without express or implied warranty.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
 
 #endif