Add SCons configure checks

[senf.git] / boost_ext / boost / multi_index / mem_fun.hpp

diff --git a/boost_ext/boost/multi_index/mem_fun.hpp b/boost_ext/boost/multi_index/mem_fun.hpp
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+/* Copyright 2003-2007 Joaquín M López Muñoz.
+ * 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)
+ *
+ * See http://www.boost.org/libs/multi_index for library home page.
+ */
+
+#ifndef BOOST_MULTI_INDEX_MEM_FUN_HPP
+#define BOOST_MULTI_INDEX_MEM_FUN_HPP
+
+#if defined(_MSC_VER)&&(_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/mpl/if.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/utility/enable_if.hpp>
+
+#if !defined(BOOST_NO_SFINAE)
+#include <boost/type_traits/is_convertible.hpp>
+#endif
+
+namespace boost{
+
+template<class T> class reference_wrapper; /* fwd decl. */
+
+namespace multi_index{
+
+/* mem_fun implements a read-only key extractor based on a given non-const
+ * member function of a class.
+ * const_mem_fun does the same for const member functions.
+ * Additionally, mem_fun  and const_mem_fun are overloaded to support
+ * referece_wrappers of T and "chained pointers" to T's. By chained pointer
+ * to T we  mean a type P such that, given a p of Type P
+ *   *...n...*x is convertible to T&, for some n>=1.
+ * Examples of chained pointers are raw and smart pointers, iterators and
+ * arbitrary combinations of these (vg. T** or auto_ptr<T*>.)
+ */
+
+template<class Class,typename Type,Type (Class::*PtrToMemberFunction)()const>
+struct const_mem_fun
+{
+  typedef typename remove_reference<Type>::type result_type;
+
+  template<typename ChainedPtr>
+
+#if !defined(BOOST_NO_SFINAE)
+  typename disable_if<
+    is_convertible<const ChainedPtr&,const Class&>,Type>::type
+#else
+  Type
+#endif
+
+  operator()(const ChainedPtr& x)const
+  {
+    return operator()(*x);
+  }
+
+  Type operator()(const Class& x)const
+  {
+    return (x.*PtrToMemberFunction)();
+  }
+
+  Type operator()(const reference_wrapper<const Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+
+  Type operator()(const reference_wrapper<Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+};
+
+template<class Class,typename Type,Type (Class::*PtrToMemberFunction)()>
+struct mem_fun
+{
+  typedef typename remove_reference<Type>::type result_type;
+
+  template<typename ChainedPtr>
+
+#if !defined(BOOST_NO_SFINAE)
+  typename disable_if<
+    is_convertible<ChainedPtr&,Class&>,Type>::type
+#else
+  Type
+#endif
+
+  operator()(const ChainedPtr& x)const
+  {
+    return operator()(*x);
+  }
+
+  Type operator()(Class& x)const
+  {
+    return (x.*PtrToMemberFunction)();
+  }
+
+  Type operator()(const reference_wrapper<Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+};
+
+/* MSVC++ 6.0 has problems with const member functions as non-type template
+ * parameters, somehow it takes them as non-const. const_mem_fun_explicit
+ * workarounds this deficiency by accepting an extra type parameter that
+ * specifies the signature of the member function. The workaround was found at:
+ *   Daniel, C.:"Re: weird typedef problem in VC",
+ *   news:microsoft.public.vc.language, 21st nov 2002, 
+ *   http://groups.google.com/groups?
+ *     hl=en&lr=&ie=UTF-8&selm=ukwvg3O0BHA.1512%40tkmsftngp05
+ */
+
+template<
+  class Class,typename Type,
+  typename PtrToMemberFunctionType,PtrToMemberFunctionType PtrToMemberFunction>
+struct const_mem_fun_explicit
+{
+  typedef typename remove_reference<Type>::type result_type;
+
+  template<typename ChainedPtr>
+
+#if !defined(BOOST_NO_SFINAE)
+  typename disable_if<
+    is_convertible<const ChainedPtr&,const Class&>,Type>::type
+#else
+  Type
+#endif
+
+  operator()(const ChainedPtr& x)const
+  {
+    return operator()(*x);
+  }
+
+  Type operator()(const Class& x)const
+  {
+    return (x.*PtrToMemberFunction)();
+  }
+
+  Type operator()(const reference_wrapper<const Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+
+  Type operator()(const reference_wrapper<Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+};
+
+template<
+  class Class,typename Type,
+  typename PtrToMemberFunctionType,PtrToMemberFunctionType PtrToMemberFunction>
+struct mem_fun_explicit
+{
+  typedef typename remove_reference<Type>::type result_type;
+
+  template<typename ChainedPtr>
+
+#if !defined(BOOST_NO_SFINAE)
+  typename disable_if<
+    is_convertible<ChainedPtr&,Class&>,Type>::type
+#else
+  Type
+#endif
+
+  operator()(const ChainedPtr& x)const
+  {
+    return operator()(*x);
+  }
+
+  Type operator()(Class& x)const
+  {
+    return (x.*PtrToMemberFunction)();
+  }
+
+  Type operator()(const reference_wrapper<Class>& x)const
+  { 
+    return operator()(x.get());
+  }
+};
+
+/* BOOST_MULTI_INDEX_CONST_MEM_FUN and BOOST_MULTI_INDEX_MEM_FUN resolve to
+ * [const_]mem_fun_explicit for MSVC++ 6.0 and to [const_]mem_fun otherwise.
+ */
+
+#if defined(BOOST_MSVC)&&(BOOST_MSVC<1300)
+
+#define BOOST_MULTI_INDEX_CONST_MEM_FUN(Class,Type,MemberFunName) \
+::boost::multi_index::const_mem_fun_explicit<\
+  Class,Type,Type (Class::*)()const,&Class::MemberFunName >
+#define BOOST_MULTI_INDEX_MEM_FUN(Class,Type,MemberFunName) \
+::boost::multi_index::mem_fun_explicit<\
+  Class,Type,Type (Class::*)(),&Class::MemberFunName >
+
+#else
+
+#define BOOST_MULTI_INDEX_CONST_MEM_FUN(Class,Type,MemberFunName) \
+::boost::multi_index::const_mem_fun< Class,Type,&Class::MemberFunName >
+#define BOOST_MULTI_INDEX_MEM_FUN(Class,Type,MemberFunName) \
+::boost::multi_index::mem_fun< Class,Type,&Class::MemberFunName >
+
+#endif
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif