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// Boost.Geometry Index
//
// R-tree nodes based on run-time polymorphism, storing std::vectors
//
// Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland.
//
// Use, modification and distribution is subject to 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)
#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_DEFAULT_HPP
#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_DEFAULT_HPP
namespace boost { namespace geometry { namespace index {
namespace detail { namespace rtree {
template <typename Value, typename Parameters, typename Box, typename Allocators>
struct dynamic_internal_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
: public dynamic_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
{
typedef typename Allocators::leaf_allocator_type::template rebind<
rtree::ptr_pair<Box, typename Allocators::node_pointer>
>::other elements_allocator_type;
typedef boost::container::vector<
rtree::ptr_pair<Box, typename Allocators::node_pointer>,
elements_allocator_type
> elements_type;
template <typename Al>
inline dynamic_internal_node(Al const& al)
: elements(al)
{}
void apply_visitor(dynamic_visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, false> & v) { v(*this); }
void apply_visitor(dynamic_visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, true> & v) const { v(*this); }
elements_type elements;
};
template <typename Value, typename Parameters, typename Box, typename Allocators>
struct dynamic_leaf<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
: public dynamic_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
{
typedef typename Allocators::leaf_allocator_type::template rebind<
Value
>::other elements_allocator_type;
typedef boost::container::vector<
Value,
elements_allocator_type
> elements_type;
template <typename Al>
inline dynamic_leaf(Al const& al)
: elements(al)
{}
void apply_visitor(dynamic_visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, false> & v) { v(*this); }
void apply_visitor(dynamic_visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, true> & v) const { v(*this); }
elements_type elements;
};
// nodes traits
template <typename Value, typename Parameters, typename Box, typename Allocators>
struct node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
{
typedef dynamic_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag> type;
};
template <typename Value, typename Parameters, typename Box, typename Allocators>
struct internal_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
{
typedef dynamic_internal_node<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag> type;
};
template <typename Value, typename Parameters, typename Box, typename Allocators>
struct leaf<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag>
{
typedef dynamic_leaf<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag> type;
};
// visitor traits
template <typename Value, typename Parameters, typename Box, typename Allocators, bool IsVisitableConst>
struct visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, IsVisitableConst>
{
typedef dynamic_visitor<Value, Parameters, Box, Allocators, node_d_mem_dynamic_tag, IsVisitableConst> type;
};
// element's indexable type
template <typename Element, typename Translator>
struct element_indexable_type
{
typedef typename indexable_type<Translator>::type type;
};
template <typename First, typename Pointer, typename Translator>
struct element_indexable_type<
rtree::ptr_pair<First, Pointer>,
Translator
>
{
typedef First type;
};
// element's indexable getter
template <typename Element, typename Translator>
typename result_type<Translator>::type
element_indexable(Element const& el, Translator const& tr)
{
return tr(el);
}
template <typename First, typename Pointer, typename Translator>
First const&
element_indexable(rtree::ptr_pair<First, Pointer> const& el, Translator const& /*tr*/)
{
return el.first;
}
// nodes elements
template <typename Node>
struct elements_type
{
typedef typename Node::elements_type type;
};
template <typename Node>
inline typename elements_type<Node>::type &
elements(Node & n)
{
return n.elements;
}
template <typename Node>
inline typename elements_type<Node>::type const&
elements(Node const& n)
{
return n.elements;
}
// elements derived type
template <typename Elements, typename NewValue>
struct container_from_elements_type
{
typedef boost::container::vector<NewValue> type;
};
// allocators
template <typename Allocator, typename Value, typename Parameters, typename Box>
class allocators<Allocator, Value, Parameters, Box, node_d_mem_dynamic_tag>
: public Allocator::template rebind<
typename internal_node<Value, Parameters, Box, allocators<Allocator, Value, Parameters, Box, node_d_mem_dynamic_tag>, node_d_mem_dynamic_tag>::type
>::other
, public Allocator::template rebind<
typename leaf<Value, Parameters, Box, allocators<Allocator, Value, Parameters, Box, node_d_mem_dynamic_tag>, node_d_mem_dynamic_tag>::type
>::other
{
typedef typename Allocator::template rebind<
Value
>::other value_allocator_type;
public:
typedef Allocator allocator_type;
typedef Value value_type;
typedef typename value_allocator_type::reference reference;
typedef typename value_allocator_type::const_reference const_reference;
typedef typename value_allocator_type::size_type size_type;
typedef typename value_allocator_type::difference_type difference_type;
typedef typename value_allocator_type::pointer pointer;
typedef typename value_allocator_type::const_pointer const_pointer;
typedef typename Allocator::template rebind<
typename node<Value, Parameters, Box, allocators, node_d_mem_dynamic_tag>::type
>::other::pointer node_pointer;
// typedef typename Allocator::template rebind<
// typename internal_node<Value, Parameters, Box, allocators, node_d_mem_dynamic_tag>::type
// >::other::pointer internal_node_pointer;
typedef typename Allocator::template rebind<
typename internal_node<Value, Parameters, Box, allocators, node_d_mem_dynamic_tag>::type
>::other internal_node_allocator_type;
typedef typename Allocator::template rebind<
typename leaf<Value, Parameters, Box, allocators, node_d_mem_dynamic_tag>::type
>::other leaf_allocator_type;
inline allocators()
: internal_node_allocator_type()
, leaf_allocator_type()
{}
template <typename Alloc>
inline explicit allocators(Alloc const& alloc)
: internal_node_allocator_type(alloc)
, leaf_allocator_type(alloc)
{}
inline allocators(BOOST_FWD_REF(allocators) a)
: internal_node_allocator_type(boost::move(a.internal_node_allocator()))
, leaf_allocator_type(boost::move(a.leaf_allocator()))
{}
inline allocators & operator=(BOOST_FWD_REF(allocators) a)
{
internal_node_allocator() = ::boost::move(a.internal_node_allocator());
leaf_allocator() = ::boost::move(a.leaf_allocator());
return *this;
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
inline allocators & operator=(allocators const& a)
{
internal_node_allocator() = a.internal_node_allocator();
leaf_allocator() = a.leaf_allocator();
return *this;
}
#endif
void swap(allocators & a)
{
boost::swap(internal_node_allocator(), a.internal_node_allocator());
boost::swap(leaf_allocator(), a.leaf_allocator());
}
bool operator==(allocators const& a) const { return leaf_allocator() == a.leaf_allocator(); }
template <typename Alloc>
bool operator==(Alloc const& a) const { return leaf_allocator() == leaf_allocator_type(a); }
Allocator allocator() const { return Allocator(leaf_allocator()); }
internal_node_allocator_type & internal_node_allocator() { return *this; }
internal_node_allocator_type const& internal_node_allocator() const { return *this; }
leaf_allocator_type & leaf_allocator() { return *this; }
leaf_allocator_type const& leaf_allocator() const { return *this; }
};
// create_node_impl
template <typename BaseNodePtr, typename Node>
struct create_dynamic_node
{
template <typename AllocNode>
static inline BaseNodePtr apply(AllocNode & alloc_node)
{
typedef boost::container::allocator_traits<AllocNode> Al;
typedef typename Al::pointer P;
P p = Al::allocate(alloc_node, 1);
if ( 0 == p )
throw_runtime_error("boost::geometry::index::rtree node creation failed");
auto_deallocator<AllocNode> deallocator(alloc_node, p);
Al::construct(alloc_node, boost::addressof(*p), alloc_node);
deallocator.release();
return p;
}
};
// destroy_node_impl
template <typename Node>
struct destroy_dynamic_node
{
template <typename AllocNode, typename BaseNodePtr>
static inline void apply(AllocNode & alloc_node, BaseNodePtr n)
{
typedef boost::container::allocator_traits<AllocNode> Al;
typedef typename Al::pointer P;
P p(&static_cast<Node&>(rtree::get<Node>(*n)));
Al::destroy(alloc_node, boost::addressof(*p));
Al::deallocate(alloc_node, p, 1);
}
};
// create_node
template <typename Allocators, typename Value, typename Parameters, typename Box, typename Tag>
struct create_node<
Allocators,
dynamic_internal_node<Value, Parameters, Box, Allocators, Tag>
>
{
static inline typename Allocators::node_pointer
apply(Allocators & allocators)
{
return create_dynamic_node<
typename Allocators::node_pointer,
dynamic_internal_node<Value, Parameters, Box, Allocators, Tag>
>::apply(allocators.internal_node_allocator());
}
};
template <typename Allocators, typename Value, typename Parameters, typename Box, typename Tag>
struct create_node<
Allocators,
dynamic_leaf<Value, Parameters, Box, Allocators, Tag>
>
{
static inline typename Allocators::node_pointer
apply(Allocators & allocators)
{
return create_dynamic_node<
typename Allocators::node_pointer,
dynamic_leaf<Value, Parameters, Box, Allocators, Tag>
>::apply(allocators.leaf_allocator());
}
};
// destroy_node
template <typename Allocators, typename Value, typename Parameters, typename Box, typename Tag>
struct destroy_node<
Allocators,
dynamic_internal_node<Value, Parameters, Box, Allocators, Tag>
>
{
static inline void apply(Allocators & allocators, typename Allocators::node_pointer n)
{
destroy_dynamic_node<
dynamic_internal_node<Value, Parameters, Box, Allocators, Tag>
>::apply(allocators.internal_node_allocator(), n);
}
};
template <typename Allocators, typename Value, typename Parameters, typename Box, typename Tag>
struct destroy_node<
Allocators,
dynamic_leaf<Value, Parameters, Box, Allocators, Tag>
>
{
static inline void apply(Allocators & allocators, typename Allocators::node_pointer n)
{
destroy_dynamic_node<
dynamic_leaf<Value, Parameters, Box, Allocators, Tag>
>::apply(allocators.leaf_allocator(), n);
}
};
}} // namespace detail::rtree
}}} // namespace boost::geometry::index
#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_DEFAULT_HPP
|
