diff -r 000000000000 -r bde4ae8d615e os/ossrv/ossrv_pub/boost_apis/boost/multi_array/base.hpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/os/ossrv/ossrv_pub/boost_apis/boost/multi_array/base.hpp Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,479 @@
+// Copyright 2002 The Trustees of Indiana University.
+
+// 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)
+
+// Boost.MultiArray Library
+// Authors: Ronald Garcia
+// Jeremy Siek
+// Andrew Lumsdaine
+// See http://www.boost.org/libs/multi_array for documentation.
+
+#ifndef BASE_RG071801_HPP
+#define BASE_RG071801_HPP
+
+//
+// base.hpp - some implementation base classes for from which
+// functionality is acquired
+//
+
+#include "boost/multi_array/extent_range.hpp"
+#include "boost/multi_array/extent_gen.hpp"
+#include "boost/multi_array/index_range.hpp"
+#include "boost/multi_array/index_gen.hpp"
+#include "boost/multi_array/storage_order.hpp"
+#include "boost/multi_array/types.hpp"
+#include "boost/config.hpp"
+#include "boost/multi_array/concept_checks.hpp" //for ignore_unused_...
+#include "boost/mpl/eval_if.hpp"
+#include "boost/mpl/if.hpp"
+#include "boost/mpl/size_t.hpp"
+#include "boost/mpl/aux_/msvc_eti_base.hpp"
+#include "boost/iterator/reverse_iterator.hpp"
+#include "boost/static_assert.hpp"
+#include "boost/type.hpp"
+#include "boost/assert.hpp"
+#include <cstddef>
+#include <memory>
+
+namespace boost {
+
+/////////////////////////////////////////////////////////////////////////
+// class declarations
+/////////////////////////////////////////////////////////////////////////
+
+template<typename T, std::size_t NumDims,
+ typename Allocator = std::allocator<T> >
+class multi_array;
+
+// This is a public interface for use by end users!
+namespace multi_array_types {
+ typedef boost::detail::multi_array::size_type size_type;
+ typedef std::ptrdiff_t difference_type;
+ typedef boost::detail::multi_array::index index;
+ typedef detail::multi_array::index_range<index,size_type> index_range;
+ typedef detail::multi_array::extent_range<index,size_type> extent_range;
+ typedef detail::multi_array::index_gen<0,0> index_gen;
+ typedef detail::multi_array::extent_gen<0> extent_gen;
+}
+
+
+// boost::extents and boost::indices are now a part of the public
+// interface. That way users don't necessarily have to create their
+// own objects. On the other hand, one may not want the overhead of
+// object creation in small-memory environments. Thus, the objects
+// can be left undefined by defining BOOST_MULTI_ARRAY_NO_GENERATORS
+// before loading multi_array.hpp.
+#if !BOOST_MULTI_ARRAY_NO_GENERATORS
+namespace {
+ multi_array_types::extent_gen extents;
+ multi_array_types::index_gen indices;
+}
+#endif // BOOST_MULTI_ARRAY_NO_GENERATORS
+
+namespace detail {
+namespace multi_array {
+
+template <typename T, std::size_t NumDims>
+class sub_array;
+
+template <typename T, std::size_t NumDims, typename TPtr = const T*>
+class const_sub_array;
+
+template <typename T, typename TPtr, typename NumDims, typename Reference>
+class array_iterator;
+
+template <typename T, std::size_t NumDims, typename TPtr = const T*>
+class const_multi_array_view;
+
+template <typename T, std::size_t NumDims>
+class multi_array_view;
+
+/////////////////////////////////////////////////////////////////////////
+// class interfaces
+/////////////////////////////////////////////////////////////////////////
+
+class multi_array_base {
+public:
+ typedef multi_array_types::size_type size_type;
+ typedef multi_array_types::difference_type difference_type;
+ typedef multi_array_types::index index;
+ typedef multi_array_types::index_range index_range;
+ typedef multi_array_types::extent_range extent_range;
+ typedef multi_array_types::index_gen index_gen;
+ typedef multi_array_types::extent_gen extent_gen;
+};
+
+//
+// value_accessor_n
+// contains the routines for accessing elements from
+// N-dimensional views.
+//
+template<typename T, std::size_t NumDims>
+class value_accessor_n : public multi_array_base {
+ typedef multi_array_base super_type;
+public:
+ typedef typename super_type::index index;
+
+ //
+ // public typedefs used by classes that inherit from this base
+ //
+ typedef T element;
+ typedef boost::multi_array<T,NumDims-1> value_type;
+ typedef sub_array<T,NumDims-1> reference;
+ typedef const_sub_array<T,NumDims-1> const_reference;
+
+protected:
+ // used by array operator[] and iterators to get reference types.
+ template <typename Reference, typename TPtr>
+ Reference access(boost::type<Reference>,index idx,TPtr base,
+ const size_type* extents,
+ const index* strides,
+ const index* index_bases) const {
+
+ BOOST_ASSERT(idx - index_bases[0] >= 0);
+ BOOST_ASSERT(size_type(idx - index_bases[0]) < extents[0]);
+ // return a sub_array<T,NDims-1> proxy object
+ TPtr newbase = base + idx * strides[0];
+ return Reference(newbase,extents+1,strides+1,index_bases+1);
+
+ }
+
+ value_accessor_n() { }
+ ~value_accessor_n() { }
+};
+
+
+
+//
+// value_accessor_one
+// contains the routines for accessing reference elements from
+// 1-dimensional views.
+//
+template<typename T>
+class value_accessor_one : public multi_array_base {
+ typedef multi_array_base super_type;
+public:
+ typedef typename super_type::index index;
+ //
+ // public typedefs for use by classes that inherit it.
+ //
+ typedef T element;
+ typedef T value_type;
+ typedef T& reference;
+ typedef T const& const_reference;
+
+protected:
+ // used by array operator[] and iterators to get reference types.
+ template <typename Reference, typename TPtr>
+ Reference access(boost::type<Reference>,index idx,TPtr base,
+ const size_type* extents,
+ const index* strides,
+ const index* index_bases) const {
+
+ ignore_unused_variable_warning(index_bases);
+ ignore_unused_variable_warning(extents);
+ BOOST_ASSERT(idx - index_bases[0] >= 0);
+ BOOST_ASSERT(size_type(idx - index_bases[0]) < extents[0]);
+ return *(base + idx * strides[0]);
+ }
+
+ value_accessor_one() { }
+ ~value_accessor_one() { }
+};
+
+
+/////////////////////////////////////////////////////////////////////////
+// choose value accessor begins
+//
+
+template <typename T, std::size_t NumDims>
+struct choose_value_accessor_n {
+ typedef value_accessor_n<T,NumDims> type;
+};
+
+template <typename T>
+struct choose_value_accessor_one {
+ typedef value_accessor_one<T> type;
+};
+
+template <typename T, typename NumDims>
+struct value_accessor_generator {
+ BOOST_STATIC_CONSTANT(std::size_t, dimensionality = NumDims::value);
+
+ typedef typename
+ mpl::eval_if_c<(dimensionality == 1),
+ choose_value_accessor_one<T>,
+ choose_value_accessor_n<T,dimensionality>
+ >::type type;
+};
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+
+struct eti_value_accessor
+{
+ typedef int index;
+ typedef int size_type;
+ typedef int element;
+ typedef int index_range;
+ typedef int value_type;
+ typedef int reference;
+ typedef int const_reference;
+};
+
+template <>
+struct value_accessor_generator<int,int>
+{
+ typedef eti_value_accessor type;
+};
+
+template <class T, class NumDims>
+struct associated_types
+ : mpl::aux::msvc_eti_base<
+ typename value_accessor_generator<T,NumDims>::type
+ >::type
+{};
+
+template <>
+struct associated_types<int,int> : eti_value_accessor {};
+
+#else
+
+template <class T, class NumDims>
+struct associated_types
+ : value_accessor_generator<T,NumDims>::type
+{};
+
+#endif
+
+//
+// choose value accessor ends
+/////////////////////////////////////////////////////////////////////////
+
+
+
+////////////////////////////////////////////////////////////////////////
+// multi_array_base
+////////////////////////////////////////////////////////////////////////
+template <typename T, std::size_t NumDims>
+class multi_array_impl_base
+ :
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ public mpl::aux::msvc_eti_base<
+ typename value_accessor_generator<T,mpl::size_t<NumDims> >::type
+ >::type
+#else
+ public value_accessor_generator<T,mpl::size_t<NumDims> >::type
+#endif
+{
+ typedef associated_types<T,mpl::size_t<NumDims> > types;
+public:
+ typedef typename types::index index;
+ typedef typename types::size_type size_type;
+ typedef typename types::element element;
+ typedef typename types::index_range index_range;
+ typedef typename types::value_type value_type;
+ typedef typename types::reference reference;
+ typedef typename types::const_reference const_reference;
+
+ template <std::size_t NDims>
+ struct subarray {
+ typedef boost::detail::multi_array::sub_array<T,NDims> type;
+ };
+
+ template <std::size_t NDims>
+ struct const_subarray {
+ typedef boost::detail::multi_array::const_sub_array<T,NDims> type;
+ };
+
+ template <std::size_t NDims>
+ struct array_view {
+ typedef boost::detail::multi_array::multi_array_view<T,NDims> type;
+ };
+
+ template <std::size_t NDims>
+ struct const_array_view {
+ public:
+ typedef boost::detail::multi_array::const_multi_array_view<T,NDims> type;
+ };
+
+ //
+ // iterator support
+ //
+ typedef array_iterator<T,T*,mpl::size_t<NumDims>,reference> iterator;
+ typedef array_iterator<T,T const*,mpl::size_t<NumDims>,const_reference> const_iterator;
+
+ typedef ::boost::reverse_iterator<iterator> reverse_iterator;
+ typedef ::boost::reverse_iterator<const_iterator> const_reverse_iterator;
+
+ BOOST_STATIC_CONSTANT(std::size_t, dimensionality = NumDims);
+protected:
+
+ multi_array_impl_base() { }
+ ~multi_array_impl_base() { }
+
+ // Used by operator() in our array classes
+ template <typename Reference, typename IndexList, typename TPtr>
+ Reference access_element(boost::type<Reference>,
+ const IndexList& indices,
+ TPtr base,
+ const size_type* extents,
+ const index* strides,
+ const index* index_bases) const {
+
+ ignore_unused_variable_warning(index_bases);
+ ignore_unused_variable_warning(extents);
+#if !defined(NDEBUG) && !defined(BOOST_DISABLE_ASSERTS)
+ for (size_type i = 0; i != NumDims; ++i) {
+ BOOST_ASSERT(indices[i] - index_bases[i] >= 0);
+ BOOST_ASSERT(size_type(indices[i] - index_bases[i]) < extents[i]);
+ }
+#endif
+
+ index offset = 0;
+ for (size_type n = 0; n != NumDims; ++n)
+ offset += indices[n] * strides[n];
+
+ return base[offset];
+ }
+
+ template <typename StrideList, typename ExtentList>
+ void compute_strides(StrideList& stride_list, ExtentList& extent_list,
+ const general_storage_order<NumDims>& storage)
+ {
+ // invariant: stride = the stride for dimension n
+ index stride = 1;
+ for (size_type n = 0; n != NumDims; ++n) {
+ index stride_sign = +1;
+
+ if (!storage.ascending(storage.ordering(n)))
+ stride_sign = -1;
+
+ // The stride for this dimension is the product of the
+ // lengths of the ranks minor to it.
+ stride_list[storage.ordering(n)] = stride * stride_sign;
+
+ stride *= extent_list[storage.ordering(n)];
+ }
+ }
+
+ // This calculates the offset to the array base pointer due to:
+ // 1. dimensions stored in descending order
+ // 2. non-zero dimension index bases
+ template <typename StrideList, typename ExtentList, typename BaseList>
+ index
+ calculate_origin_offset(const StrideList& stride_list,
+ const ExtentList& extent_list,
+ const general_storage_order<NumDims>& storage,
+ const BaseList& index_base_list)
+ {
+ return
+ calculate_descending_dimension_offset(stride_list,extent_list,
+ storage) +
+ calculate_indexing_offset(stride_list,index_base_list);
+ }
+
+ // This calculates the offset added to the base pointer that are
+ // caused by descending dimensions
+ template <typename StrideList, typename ExtentList>
+ index
+ calculate_descending_dimension_offset(const StrideList& stride_list,
+ const ExtentList& extent_list,
+ const general_storage_order<NumDims>& storage)
+ {
+ index offset = 0;
+ if (!storage.all_dims_ascending())
+ for (size_type n = 0; n != NumDims; ++n)
+ if (!storage.ascending(n))
+ offset -= (extent_list[n] - 1) * stride_list[n];
+
+ return offset;
+ }
+
+ // This is used to reindex array_views, which are no longer
+ // concerned about storage order (specifically, whether dimensions
+ // are ascending or descending) since the viewed array handled it.
+
+ template <typename StrideList, typename BaseList>
+ index
+ calculate_indexing_offset(const StrideList& stride_list,
+ const BaseList& index_base_list)
+ {
+ index offset = 0;
+ for (size_type n = 0; n != NumDims; ++n)
+ offset -= stride_list[n] * index_base_list[n];
+ return offset;
+ }
+
+ // Slicing using an index_gen.
+ // Note that populating an index_gen creates a type that encodes
+ // both the number of dimensions in the current Array (NumDims), and
+ // the Number of dimensions for the resulting view. This allows the
+ // compiler to fail if the dimensions aren't completely accounted
+ // for. For reasons unbeknownst to me, a BOOST_STATIC_ASSERT
+ // within the member function template does not work. I should add a
+ // note to the documentation specifying that you get a damn ugly
+ // error message if you screw up in your slicing code.
+ template <typename ArrayRef, int NDims, typename TPtr>
+ ArrayRef
+ generate_array_view(boost::type<ArrayRef>,
+ const boost::detail::multi_array::
+ index_gen<NumDims,NDims>& indices,
+ const size_type* extents,
+ const index* strides,
+ const index* index_bases,
+ TPtr base) const {
+
+ boost::array<index,NDims> new_strides;
+ boost::array<index,NDims> new_extents;
+
+ index offset = 0;
+ size_type dim = 0;
+ for (size_type n = 0; n != NumDims; ++n) {
+ const index default_start = index_bases[n];
+ const index default_finish = default_start+extents[n];
+ const index_range& current_range = indices.ranges_[n];
+ index start = current_range.get_start(default_start);
+ index finish = current_range.get_finish(default_finish);
+ index index_factor = current_range.stride();
+ index len = (finish - start + (index_factor - 1)) / index_factor;
+
+ BOOST_ASSERT(index_bases[n] <= start &&
+ start <= index_bases[n]+index(extents[n]));
+ BOOST_ASSERT(index_bases[n] <= finish &&
+ finish <= index_bases[n]+index(extents[n]));
+ BOOST_ASSERT(index_factor > 0);
+
+ // the array data pointer is modified to account for non-zero
+ // bases during slicing (see [Garcia] for the math involved)
+ offset += start * strides[n];
+
+ if (!current_range.is_degenerate()) {
+
+ // The index_factor for each dimension is included into the
+ // strides for the array_view (see [Garcia] for the math involved).
+ new_strides[dim] = index_factor * strides[n];
+
+ // calculate new extents
+ new_extents[dim] = len;
+ ++dim;
+ }
+ }
+ BOOST_ASSERT(dim == NDims);
+
+ return
+ ArrayRef(base+offset,
+ new_extents,
+ new_strides);
+ }
+
+
+};
+
+} // namespace multi_array
+} // namespace detail
+
+} // namespace boost
+
+#endif // BASE_RG071801_HPP