Add SCons configure checks

[senf.git] / boost_ext / boost / multi_index / detail / index_loader.hpp

diff --git a/boost_ext/boost/multi_index/detail/index_loader.hpp b/boost_ext/boost/multi_index/detail/index_loader.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_DETAIL_INDEX_LOADER_HPP
+#define BOOST_MULTI_INDEX_DETAIL_INDEX_LOADER_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 <algorithm>
+#include <boost/archive/archive_exception.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/multi_index/detail/auto_space.hpp>
+#include <boost/serialization/nvp.hpp>
+#include <boost/throw_exception.hpp> 
+#include <cstddef>
+
+namespace boost{
+
+namespace multi_index{
+
+namespace detail{
+
+/* Counterpart of index_saver (check index_saver.hpp for serialization
+ * details.)* multi_index_container is in charge of supplying the info about
+ * the base sequence, and each index can subsequently load itself using the
+ * const interface of index_loader.
+ */
+
+template<typename Node,typename FinalNode,typename Allocator>
+class index_loader:private noncopyable
+{
+public:
+  index_loader(const Allocator& al,std::size_t size):
+    spc(al,size),size_(size),n(0),sorted(false)
+  {
+  }
+
+  template<class Archive>
+  void add(Node* node,Archive& ar,const unsigned int)
+  {
+    ar>>serialization::make_nvp("position",*node);
+    entries()[n++]=node;
+  }
+
+  template<class Archive>
+  void add_track(Node* node,Archive& ar,const unsigned int)
+  {
+    ar>>serialization::make_nvp("position",*node);
+  }
+
+  /* A rearranger is passed two nodes, and is expected to
+   * reposition the second after the first.
+   * If the first node is 0, then the second should be moved
+   * to the beginning of the sequence.
+   */
+
+  template<typename Rearranger,class Archive>
+  void load(Rearranger r,Archive& ar,const unsigned int)const
+  {
+    FinalNode* prev=unchecked_load_node(ar);
+    if(!prev)return;
+
+    if(!sorted){
+      std::sort(entries(),entries()+size_);
+      sorted=true;
+    }
+
+    check_node(prev);
+
+    for(;;){
+      for(;;){
+        FinalNode* node=load_node(ar);
+        if(!node)break;
+
+        if(node==prev)prev=0;
+        r(prev,node);
+
+        prev=node;
+      }
+      prev=load_node(ar);
+      if(!prev)break;
+    }
+  }
+
+private:
+  Node** entries()const{return &*spc.data();}
+
+  /* We try to delay sorting as much as possible just in case it
+   * is not necessary, hence this version of load_node.
+   */
+
+  template<class Archive>
+  FinalNode* unchecked_load_node(Archive& ar)const
+  {
+    Node* node=0;
+    ar>>serialization::make_nvp("pointer",node);
+    return static_cast<FinalNode*>(node);
+  }
+
+  template<class Archive>
+  FinalNode* load_node(Archive& ar)const
+  {
+    Node* node=0;
+    ar>>serialization::make_nvp("pointer",node);
+    check_node(node);
+    return static_cast<FinalNode*>(node);
+  }
+
+  void check_node(Node* node)const
+  {
+    if(node!=0&&!std::binary_search(entries(),entries()+size_,node)){
+      throw_exception(
+        archive::archive_exception(
+          archive::archive_exception::other_exception));
+    }
+  }
+
+  auto_space<Node*,Allocator> spc;
+  std::size_t                 size_;
+  std::size_t                 n;
+  mutable bool                sorted;
+};
+
+} /* namespace multi_index::detail */
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif