Added boost.any (dependency for log)

boost/any.hpp

@@ -0,0 +1,253 @@
+// See http://www.boost.org/libs/any for Documentation.
+
+#ifndef BOOST_ANY_INCLUDED
+#define BOOST_ANY_INCLUDED
+
+// what:  variant type boost::any
+// who:   contributed by Kevlin Henney,
+//        with features contributed and bugs found by
+//        Ed Brey, Mark Rodgers, Peter Dimov, and James Curran
+// when:  July 2001
+// where: tested with BCC 5.5, MSVC 6.0, and g++ 2.95
+
+#include <algorithm>
+#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
+{
+    class any
+    {
+    public: // structors
+
+        any()
+          : content(0)
+        {
+        }
+
+        template<typename ValueType>
+        any(const ValueType & value)
+          : content(new holder<ValueType>(value))
+        {
+        }
+
+        any(const any & other)
+          : content(other.content ? other.content->clone() : 0)
+        {
+        }
+
+        ~any()
+        {
+            delete content;
+        }
+
+    public: // modifiers
+
+        any & swap(any & rhs)
+        {
+            std::swap(content, rhs.content);
+            return *this;
+        }
+
+        template<typename ValueType>
+        any & operator=(const ValueType & rhs)
+        {
+            any(rhs).swap(*this);
+            return *this;
+        }
+
+        any & operator=(any rhs)
+        {
+            rhs.swap(*this);
+            return *this;
+        }
+
+    public: // queries
+
+        bool empty() const
+        {
+            return !content;
+        }
+
+        const std::type_info & type() const
+        {
+            return content ? content->type() : typeid(void);
+        }
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+    private: // types
+#else
+    public: // types (public so any_cast can be non-friend)
+#endif
+
+        class placeholder
+        {
+        public: // structors
+
+            virtual ~placeholder()
+            {
+            }
+
+        public: // queries
+
+            virtual const std::type_info & type() const = 0;
+
+            virtual placeholder * clone() const = 0;
+
+        };
+
+        template<typename ValueType>
+        class holder : public placeholder
+        {
+        public: // structors
+
+            holder(const ValueType & value)
+              : held(value)
+            {
+            }
+
+        public: // queries
+
+            virtual const std::type_info & type() const
+            {
+                return typeid(ValueType);
+            }
+
+            virtual placeholder * clone() const
+            {
+                return new holder(held);
+            }
+
+        public: // representation
+
+            ValueType held;
+
+        private: // intentionally left unimplemented
+            holder & operator=(const holder &);
+        };
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+
+    private: // representation
+
+        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)
+
+#endif
+
+        placeholder * content;
+
+    };
+
+    class bad_any_cast : public std::bad_cast
+    {
+    public:
+        virtual const char * what() const throw()
+        {
+            return "boost::bad_any_cast: "
+                   "failed conversion using boost::any_cast";
+        }
+    };
+
+    template<typename ValueType>
+    ValueType * any_cast(any * operand)
+    {
+        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>
+    inline const ValueType * any_cast(const any * operand)
+    {
+        return any_cast<ValueType>(const_cast<any *>(operand));
+    }
+
+    template<typename ValueType>
+    ValueType any_cast(any & 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)
+            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.
+//
+// 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