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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/foreach.hpp
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+///////////////////////////////////////////////////////////////////////////////
+// foreach.hpp header file
+//
+// Copyright 2004 Eric Niebler.
+// 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/foreach for documentation
+//
+// Credits:
+// Anson Tsao - for the initial inspiration and several good suggestions.
+// Thorsten Ottosen - for Boost.Range, and for suggesting a way to detect
+// const-qualified rvalues at compile time on VC7.1+
+// Russell Hind - For help porting to Borland
+// Alisdair Meredith - For help porting to Borland
+// Stefan Slapeta - For help porting to Intel
+// David Jenkins - For help finding a Microsoft Code Analysis bug
+
+#ifndef BOOST_FOREACH
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <cstddef>
+#include <utility> // for std::pair
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+
+// Some compilers let us detect even const-qualified rvalues at compile-time
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1310) && !defined(_PREFAST_) \
+ || (BOOST_WORKAROUND(__GNUC__, >= 4) && !defined(BOOST_INTEL)) \
+ || (BOOST_WORKAROUND(__GNUC__, == 3) && (__GNUC_MINOR__ >= 4) && !defined(BOOST_INTEL))
+# define BOOST_FOREACH_COMPILE_TIME_CONST_RVALUE_DETECTION
+#else
+// Some compilers allow temporaries to be bound to non-const references.
+// These compilers make it impossible to for BOOST_FOREACH to detect
+// temporaries and avoid reevaluation of the collection expression.
+# if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) \
+ || BOOST_WORKAROUND(__BORLANDC__, < 0x593) \
+ || (BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION, <= 700) && defined(_MSC_VER)) \
+ || BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x570)) \
+ || BOOST_WORKAROUND(__DECCXX_VER, <= 60590042)
+# define BOOST_FOREACH_NO_RVALUE_DETECTION
+# endif
+// Some compilers do not correctly implement the lvalue/rvalue conversion
+// rules of the ternary conditional operator.
+# if defined(BOOST_FOREACH_NO_RVALUE_DETECTION) \
+ || defined(BOOST_NO_SFINAE) \
+ || BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \
+ || BOOST_WORKAROUND(BOOST_INTEL_WIN, BOOST_TESTED_AT(1400)) \
+ || BOOST_WORKAROUND(__GNUC__, < 3) \
+ || (BOOST_WORKAROUND(__GNUC__, == 3) && (__GNUC_MINOR__ <= 2)) \
+ || (BOOST_WORKAROUND(__GNUC__, == 3) && (__GNUC_MINOR__ <= 3) && defined(__APPLE_CC__)) \
+ || BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600)) \
+ || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206)) \
+ || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x590))
+# define BOOST_FOREACH_NO_CONST_RVALUE_DETECTION
+# else
+# define BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+# endif
+#endif
+
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/logical.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/range/end.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/rend.hpp>
+#include <boost/range/rbegin.hpp>
+#include <boost/range/iterator.hpp>
+#include <boost/range/reverse_iterator.hpp>
+#include <boost/type_traits/is_array.hpp>
+#include <boost/type_traits/is_const.hpp>
+#include <boost/type_traits/is_abstract.hpp>
+#include <boost/type_traits/is_base_and_derived.hpp>
+#include <boost/iterator/iterator_traits.hpp>
+#include <boost/utility/addressof.hpp>
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+# include <new>
+# include <boost/aligned_storage.hpp>
+# include <boost/utility/enable_if.hpp>
+# include <boost/type_traits/remove_const.hpp>
+#endif
+
+// This must be at global scope, hence the uglified name
+enum boost_foreach_argument_dependent_lookup_hack
+{
+ boost_foreach_argument_dependent_lookup_hack_value
+};
+
+namespace boost
+{
+
+// forward declarations for iterator_range
+template<typename T>
+class iterator_range;
+
+// forward declarations for sub_range
+template<typename T>
+class sub_range;
+
+namespace foreach
+{
+ ///////////////////////////////////////////////////////////////////////////////
+ // in_range
+ //
+ template<typename T>
+ inline std::pair<T, T> in_range(T begin, T end)
+ {
+ return std::make_pair(begin, end);
+ }
+
+ ///////////////////////////////////////////////////////////////////////////////
+ // boost::foreach::tag
+ //
+ typedef boost_foreach_argument_dependent_lookup_hack tag;
+
+ ///////////////////////////////////////////////////////////////////////////////
+ // boost::foreach::is_lightweight_proxy
+ // Specialize this for user-defined collection types if they are inexpensive to copy.
+ // This tells BOOST_FOREACH it can avoid the rvalue/lvalue detection stuff.
+ template<typename T>
+ struct is_lightweight_proxy
+ : boost::mpl::false_
+ {
+ };
+
+ ///////////////////////////////////////////////////////////////////////////////
+ // boost::foreach::is_noncopyable
+ // Specialize this for user-defined collection types if they cannot be copied.
+ // This also tells BOOST_FOREACH to avoid the rvalue/lvalue detection stuff.
+ template<typename T>
+ struct is_noncopyable
+ #if !defined(BOOST_BROKEN_IS_BASE_AND_DERIVED) && !defined(BOOST_NO_IS_ABSTRACT)
+ : boost::mpl::or_<
+ boost::is_abstract<T>
+ , boost::is_base_and_derived<boost::noncopyable, T>
+ >
+ #elif !defined(BOOST_BROKEN_IS_BASE_AND_DERIVED)
+ : boost::is_base_and_derived<boost::noncopyable, T>
+ #elif !defined(BOOST_NO_IS_ABSTRACT)
+ : boost::is_abstract<T>
+ #else
+ : boost::mpl::false_
+ #endif
+ {
+ };
+
+} // namespace foreach
+
+} // namespace boost
+
+// vc6/7 needs help ordering the following overloads
+#ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+# define BOOST_FOREACH_TAG_DEFAULT ...
+#else
+# define BOOST_FOREACH_TAG_DEFAULT boost::foreach::tag
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// boost_foreach_is_lightweight_proxy
+// Another customization point for the is_lightweight_proxy optimization,
+// this one works on legacy compilers. Overload boost_foreach_is_lightweight_proxy
+// at the global namespace for your type.
+template<typename T>
+inline boost::foreach::is_lightweight_proxy<T> *
+boost_foreach_is_lightweight_proxy(T *&, BOOST_FOREACH_TAG_DEFAULT) { return 0; }
+
+template<typename T>
+inline boost::mpl::true_ *
+boost_foreach_is_lightweight_proxy(std::pair<T, T> *&, boost::foreach::tag) { return 0; }
+
+template<typename T>
+inline boost::mpl::true_ *
+boost_foreach_is_lightweight_proxy(boost::iterator_range<T> *&, boost::foreach::tag) { return 0; }
+
+template<typename T>
+inline boost::mpl::true_ *
+boost_foreach_is_lightweight_proxy(boost::sub_range<T> *&, boost::foreach::tag) { return 0; }
+
+template<typename T>
+inline boost::mpl::true_ *
+boost_foreach_is_lightweight_proxy(T **&, boost::foreach::tag) { return 0; }
+
+///////////////////////////////////////////////////////////////////////////////
+// boost_foreach_is_noncopyable
+// Another customization point for the is_noncopyable trait,
+// this one works on legacy compilers. Overload boost_foreach_is_noncopyable
+// at the global namespace for your type.
+template<typename T>
+inline boost::foreach::is_noncopyable<T> *
+boost_foreach_is_noncopyable(T *&, BOOST_FOREACH_TAG_DEFAULT) { return 0; }
+
+namespace boost
+{
+
+namespace foreach_detail_
+{
+
+///////////////////////////////////////////////////////////////////////////////
+// Define some utilities for assessing the properties of expressions
+//
+template<typename Bool1, typename Bool2>
+inline boost::mpl::and_<Bool1, Bool2> *and_(Bool1 *, Bool2 *) { return 0; }
+
+template<typename Bool1, typename Bool2, typename Bool3>
+inline boost::mpl::and_<Bool1, Bool2, Bool3> *and_(Bool1 *, Bool2 *, Bool3 *) { return 0; }
+
+template<typename Bool1, typename Bool2>
+inline boost::mpl::or_<Bool1, Bool2> *or_(Bool1 *, Bool2 *) { return 0; }
+
+template<typename Bool1, typename Bool2, typename Bool3>
+inline boost::mpl::or_<Bool1, Bool2, Bool3> *or_(Bool1 *, Bool2 *, Bool3 *) { return 0; }
+
+template<typename Bool>
+inline boost::mpl::not_<Bool> *not_(Bool *) { return 0; }
+
+template<typename T>
+inline boost::mpl::false_ *is_rvalue_(T &, int) { return 0; }
+
+template<typename T>
+inline boost::mpl::true_ *is_rvalue_(T const &, ...) { return 0; }
+
+template<typename T>
+inline boost::is_array<T> *is_array_(T const &) { return 0; }
+
+template<typename T>
+inline boost::is_const<T> *is_const_(T &) { return 0; }
+
+#ifndef BOOST_FOREACH_NO_RVALUE_DETECTION
+template<typename T>
+inline boost::mpl::true_ *is_const_(T const &) { return 0; }
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// auto_any_t/auto_any
+// General utility for putting an object of any type into automatic storage
+struct auto_any_base
+{
+ // auto_any_base must evaluate to false in boolean context so that
+ // they can be declared in if() statements.
+ operator bool() const
+ {
+ return false;
+ }
+};
+
+template<typename T>
+struct auto_any : auto_any_base
+{
+ auto_any(T const &t)
+ : item(t)
+ {
+ }
+
+ // temporaries of type auto_any will be bound to const auto_any_base
+ // references, but we still want to be able to mutate the stored
+ // data, so declare it as mutable.
+ mutable T item;
+};
+
+typedef auto_any_base const &auto_any_t;
+
+template<typename T, typename C>
+inline BOOST_DEDUCED_TYPENAME boost::mpl::if_<C, T const, T>::type &auto_any_cast(auto_any_t a)
+{
+ return static_cast<auto_any<T> const &>(a).item;
+}
+
+typedef boost::mpl::true_ const_;
+
+///////////////////////////////////////////////////////////////////////////////
+// type2type
+//
+template<typename T, typename C = boost::mpl::false_>
+struct type2type
+ : boost::mpl::if_<C, T const, T>
+{
+};
+
+template<typename T>
+struct wrap_cstr
+{
+ typedef T type;
+};
+
+template<>
+struct wrap_cstr<char *>
+{
+ typedef wrap_cstr<char *> type;
+ typedef char *iterator;
+ typedef char *const_iterator;
+};
+
+template<>
+struct wrap_cstr<char const *>
+{
+ typedef wrap_cstr<char const *> type;
+ typedef char const *iterator;
+ typedef char const *const_iterator;
+};
+
+template<>
+struct wrap_cstr<wchar_t *>
+{
+ typedef wrap_cstr<wchar_t *> type;
+ typedef wchar_t *iterator;
+ typedef wchar_t *const_iterator;
+};
+
+template<>
+struct wrap_cstr<wchar_t const *>
+{
+ typedef wrap_cstr<wchar_t const *> type;
+ typedef wchar_t const *iterator;
+ typedef wchar_t const *const_iterator;
+};
+
+template<typename T>
+struct is_char_array
+ : mpl::and_<
+ is_array<T>
+ , mpl::or_<
+ is_convertible<T, char const *>
+ , is_convertible<T, wchar_t const *>
+ >
+ >
+{};
+
+template<typename T, typename C = boost::mpl::false_>
+struct foreach_iterator
+{
+ // **** READ THIS IF YOUR COMPILE BREAKS HERE ****
+ //
+ // There is an ambiguity about how to iterate over arrays of char and wchar_t.
+ // Should the last array element be treated as a null terminator to be skipped, or
+ // is it just like any other element in the array? To fix the problem, you must
+ // say which behavior you want.
+ //
+ // To treat the container as a null-terminated string, merely cast it to a
+ // char const *, as in BOOST_FOREACH( char ch, (char const *)"hello" ) ...
+ //
+ // To treat the container as an array, use boost::as_array() in <boost/range/as_array.hpp>,
+ // as in BOOST_FOREACH( char ch, boost::as_array("hello") ) ...
+ #if !defined(BOOST_MSVC) || BOOST_MSVC > 1300
+ BOOST_MPL_ASSERT_MSG( (!is_char_array<T>::value), IS_THIS_AN_ARRAY_OR_A_NULL_TERMINATED_STRING, (T&) );
+ #endif
+
+ // If the type is a pointer to a null terminated string (as opposed
+ // to an array type), there is no ambiguity.
+ typedef BOOST_DEDUCED_TYPENAME wrap_cstr<T>::type container;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::eval_if<
+ C
+ , range_const_iterator<container>
+ , range_mutable_iterator<container>
+ >::type type;
+};
+
+
+template<typename T, typename C = boost::mpl::false_>
+struct foreach_reverse_iterator
+{
+ // **** READ THIS IF YOUR COMPILE BREAKS HERE ****
+ //
+ // There is an ambiguity about how to iterate over arrays of char and wchar_t.
+ // Should the last array element be treated as a null terminator to be skipped, or
+ // is it just like any other element in the array? To fix the problem, you must
+ // say which behavior you want.
+ //
+ // To treat the container as a null-terminated string, merely cast it to a
+ // char const *, as in BOOST_FOREACH( char ch, (char const *)"hello" ) ...
+ //
+ // To treat the container as an array, use boost::as_array() in <boost/range/as_array.hpp>,
+ // as in BOOST_FOREACH( char ch, boost::as_array("hello") ) ...
+ #if !defined(BOOST_MSVC) || BOOST_MSVC > 1300
+ BOOST_MPL_ASSERT_MSG( (!is_char_array<T>::value), IS_THIS_AN_ARRAY_OR_A_NULL_TERMINATED_STRING, (T&) );
+ #endif
+
+ // If the type is a pointer to a null terminated string (as opposed
+ // to an array type), there is no ambiguity.
+ typedef BOOST_DEDUCED_TYPENAME wrap_cstr<T>::type container;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::eval_if<
+ C
+ , range_reverse_iterator<container const>
+ , range_reverse_iterator<container>
+ >::type type;
+};
+
+template<typename T, typename C = boost::mpl::false_>
+struct foreach_reference
+ : iterator_reference<BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type>
+{
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// encode_type
+//
+template<typename T>
+inline type2type<T> *encode_type(T &, boost::mpl::false_ *) { return 0; }
+
+template<typename T>
+inline type2type<T, const_> *encode_type(T const &, boost::mpl::true_ *) { return 0; }
+
+///////////////////////////////////////////////////////////////////////////////
+// set_false
+//
+inline bool set_false(bool &b)
+{
+ b = false;
+ return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// to_ptr
+//
+template<typename T>
+inline T *&to_ptr(T const &)
+{
+ static T *t = 0;
+ return t;
+}
+
+// Borland needs a little extra help with arrays
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+template<typename T,std::size_t N>
+inline T (*&to_ptr(T (&)[N]))[N]
+{
+ static T (*t)[N] = 0;
+ return t;
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// derefof
+//
+template<typename T>
+inline T &derefof(T *t)
+{
+ // This is a work-around for a compiler bug in Borland. If T* is a pointer to array type U(*)[N],
+ // then dereferencing it results in a U* instead of U(&)[N]. The cast forces the issue.
+ return reinterpret_cast<T &>(
+ *const_cast<char *>(
+ reinterpret_cast<char const volatile *>(t)
+ )
+ );
+}
+
+#ifdef BOOST_FOREACH_COMPILE_TIME_CONST_RVALUE_DETECTION
+///////////////////////////////////////////////////////////////////////////////
+// Detect at compile-time whether an expression yields an rvalue or
+// an lvalue. This is rather non-standard, but some popular compilers
+// accept it.
+///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////
+// rvalue_probe
+//
+template<typename T>
+struct rvalue_probe
+{
+ struct private_type_ {};
+ // can't ever return an array by value
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
+ boost::mpl::or_<boost::is_abstract<T>, boost::is_array<T> >, private_type_, T
+ >::type value_type;
+ operator value_type() { return *reinterpret_cast<value_type *>(this); } // never called
+ operator T &() const { return *reinterpret_cast<T *>(const_cast<rvalue_probe *>(this)); } // never called
+};
+
+template<typename T>
+rvalue_probe<T> const make_probe(T const &)
+{
+ return rvalue_probe<T>();
+}
+
+# define BOOST_FOREACH_IS_RVALUE(COL) \
+ boost::foreach_detail_::and_( \
+ boost::foreach_detail_::not_(boost::foreach_detail_::is_array_(COL)) \
+ , (true ? 0 : boost::foreach_detail_::is_rvalue_( \
+ (true ? boost::foreach_detail_::make_probe(COL) : (COL)), 0)))
+
+#elif defined(BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION)
+///////////////////////////////////////////////////////////////////////////////
+// Detect at run-time whether an expression yields an rvalue
+// or an lvalue. This is 100% standard C++, but not all compilers
+// accept it. Also, it causes FOREACH to break when used with non-
+// copyable collection types.
+///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////
+// rvalue_probe
+//
+template<typename T>
+struct rvalue_probe
+{
+ rvalue_probe(T &t, bool &b)
+ : value(t)
+ , is_rvalue(b)
+ {
+ }
+
+ struct private_type_ {};
+ // can't ever return an array or an abstract type by value
+ #ifdef BOOST_NO_IS_ABSTRACT
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
+ boost::is_array<T>, private_type_, T
+ >::type value_type;
+ #else
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
+ boost::mpl::or_<boost::is_abstract<T>, boost::is_array<T> >, private_type_, T
+ >::type value_type;
+ #endif
+
+ operator value_type()
+ {
+ this->is_rvalue = true;
+ return this->value;
+ }
+
+ operator T &() const
+ {
+ return this->value;
+ }
+
+private:
+ T &value;
+ bool &is_rvalue;
+};
+
+template<typename T>
+rvalue_probe<T> make_probe(T &t, bool &b) { return rvalue_probe<T>(t, b); }
+
+template<typename T>
+rvalue_probe<T const> make_probe(T const &t, bool &b) { return rvalue_probe<T const>(t, b); }
+
+///////////////////////////////////////////////////////////////////////////////
+// simple_variant
+// holds either a T or a T const*
+template<typename T>
+struct simple_variant
+{
+ simple_variant(T const *t)
+ : is_rvalue(false)
+ {
+ *static_cast<T const **>(this->data.address()) = t;
+ }
+
+ simple_variant(T const &t)
+ : is_rvalue(true)
+ {
+ ::new(this->data.address()) T(t);
+ }
+
+ simple_variant(simple_variant const &that)
+ : is_rvalue(that.is_rvalue)
+ {
+ if(this->is_rvalue)
+ ::new(this->data.address()) T(*that.get());
+ else
+ *static_cast<T const **>(this->data.address()) = that.get();
+ }
+
+ ~simple_variant()
+ {
+ if(this->is_rvalue)
+ this->get()->~T();
+ }
+
+ T const *get() const
+ {
+ if(this->is_rvalue)
+ return static_cast<T const *>(this->data.address());
+ else
+ return *static_cast<T const * const *>(this->data.address());
+ }
+
+private:
+ enum size_type { size = sizeof(T) > sizeof(T*) ? sizeof(T) : sizeof(T*) };
+ simple_variant &operator =(simple_variant const &);
+ bool const is_rvalue;
+ aligned_storage<size> data;
+};
+
+// If the collection is an array or is noncopyable, it must be an lvalue.
+// If the collection is a lightweight proxy, treat it as an rvalue
+// BUGBUG what about a noncopyable proxy?
+template<typename LValue, typename IsProxy>
+inline BOOST_DEDUCED_TYPENAME boost::enable_if<boost::mpl::or_<LValue, IsProxy>, IsProxy>::type *
+should_copy_impl(LValue *, IsProxy *, bool *)
+{
+ return 0;
+}
+
+// Otherwise, we must determine at runtime whether it's an lvalue or rvalue
+inline bool *
+should_copy_impl(boost::mpl::false_ *, boost::mpl::false_ *, bool *is_rvalue)
+{
+ return is_rvalue;
+}
+
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// contain
+//
+template<typename T>
+inline auto_any<T> contain(T const &t, boost::mpl::true_ *) // rvalue
+{
+ return t;
+}
+
+template<typename T>
+inline auto_any<T *> contain(T &t, boost::mpl::false_ *) // lvalue
+{
+ // Cannot seem to get sunpro to handle addressof() with array types.
+ #if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x570))
+ return &t;
+ #else
+ return boost::addressof(t);
+ #endif
+}
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+template<typename T>
+auto_any<simple_variant<T> >
+contain(T const &t, bool *rvalue)
+{
+ return *rvalue ? simple_variant<T>(t) : simple_variant<T>(&t);
+}
+#endif
+
+/////////////////////////////////////////////////////////////////////////////
+// begin
+//
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type>
+begin(auto_any_t col, type2type<T, C> *, boost::mpl::true_ *) // rvalue
+{
+ return boost::begin(auto_any_cast<T, C>(col));
+}
+
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type>
+begin(auto_any_t col, type2type<T, C> *, boost::mpl::false_ *) // lvalue
+{
+ typedef BOOST_DEDUCED_TYPENAME type2type<T, C>::type type;
+ typedef BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type iterator;
+ return iterator(boost::begin(derefof(auto_any_cast<type *, boost::mpl::false_>(col))));
+}
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+template<typename T>
+auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, const_>::type>
+begin(auto_any_t col, type2type<T, const_> *, bool *)
+{
+ return boost::begin(*auto_any_cast<simple_variant<T>, boost::mpl::false_>(col).get());
+}
+#endif
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+template<typename T, typename C>
+inline auto_any<T *>
+begin(auto_any_t col, type2type<T *, C> *, boost::mpl::true_ *) // null-terminated C-style strings
+{
+ return auto_any_cast<T *, boost::mpl::false_>(col);
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// end
+//
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type>
+end(auto_any_t col, type2type<T, C> *, boost::mpl::true_ *) // rvalue
+{
+ return boost::end(auto_any_cast<T, C>(col));
+}
+
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type>
+end(auto_any_t col, type2type<T, C> *, boost::mpl::false_ *) // lvalue
+{
+ typedef BOOST_DEDUCED_TYPENAME type2type<T, C>::type type;
+ typedef BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type iterator;
+ return iterator(boost::end(derefof(auto_any_cast<type *, boost::mpl::false_>(col))));
+}
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+template<typename T>
+auto_any<BOOST_DEDUCED_TYPENAME foreach_iterator<T, const_>::type>
+end(auto_any_t col, type2type<T, const_> *, bool *)
+{
+ return boost::end(*auto_any_cast<simple_variant<T>, boost::mpl::false_>(col).get());
+}
+#endif
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+template<typename T, typename C>
+inline auto_any<int>
+end(auto_any_t col, type2type<T *, C> *, boost::mpl::true_ *) // null-terminated C-style strings
+{
+ return 0; // not used
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// done
+//
+template<typename T, typename C>
+inline bool done(auto_any_t cur, auto_any_t end, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type iter_t;
+ return auto_any_cast<iter_t, boost::mpl::false_>(cur) == auto_any_cast<iter_t, boost::mpl::false_>(end);
+}
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+template<typename T, typename C>
+inline bool done(auto_any_t cur, auto_any_t, type2type<T *, C> *) // null-terminated C-style strings
+{
+ return ! *auto_any_cast<T *, boost::mpl::false_>(cur);
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// next
+//
+template<typename T, typename C>
+inline void next(auto_any_t cur, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type iter_t;
+ ++auto_any_cast<iter_t, boost::mpl::false_>(cur);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// deref
+//
+template<typename T, typename C>
+inline BOOST_DEDUCED_TYPENAME foreach_reference<T, C>::type
+deref(auto_any_t cur, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_iterator<T, C>::type iter_t;
+ return *auto_any_cast<iter_t, boost::mpl::false_>(cur);
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// rbegin
+//
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type>
+rbegin(auto_any_t col, type2type<T, C> *, boost::mpl::true_ *) // rvalue
+{
+ return boost::rbegin(auto_any_cast<T, C>(col));
+}
+
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type>
+rbegin(auto_any_t col, type2type<T, C> *, boost::mpl::false_ *) // lvalue
+{
+ typedef BOOST_DEDUCED_TYPENAME type2type<T, C>::type type;
+ typedef BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type iterator;
+ return iterator(boost::rbegin(derefof(auto_any_cast<type *, boost::mpl::false_>(col))));
+}
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+template<typename T>
+auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, const_>::type>
+rbegin(auto_any_t col, type2type<T, const_> *, bool *)
+{
+ return boost::rbegin(*auto_any_cast<simple_variant<T>, boost::mpl::false_>(col).get());
+}
+#endif
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+template<typename T, typename C>
+inline auto_any<reverse_iterator<T *> >
+rbegin(auto_any_t col, type2type<T *, C> *, boost::mpl::true_ *) // null-terminated C-style strings
+{
+ T *p = auto_any_cast<T *, boost::mpl::false_>(col);
+ while(0 != *p)
+ ++p;
+ return reverse_iterator<T *>(p);
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// rend
+//
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type>
+rend(auto_any_t col, type2type<T, C> *, boost::mpl::true_ *) // rvalue
+{
+ return boost::rend(auto_any_cast<T, C>(col));
+}
+
+template<typename T, typename C>
+inline auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type>
+rend(auto_any_t col, type2type<T, C> *, boost::mpl::false_ *) // lvalue
+{
+ typedef BOOST_DEDUCED_TYPENAME type2type<T, C>::type type;
+ typedef BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type iterator;
+ return iterator(boost::rend(derefof(auto_any_cast<type *, boost::mpl::false_>(col))));
+}
+
+#ifdef BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION
+template<typename T>
+auto_any<BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, const_>::type>
+rend(auto_any_t col, type2type<T, const_> *, bool *)
+{
+ return boost::rend(*auto_any_cast<simple_variant<T>, boost::mpl::false_>(col).get());
+}
+#endif
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+template<typename T, typename C>
+inline auto_any<reverse_iterator<T *> >
+rend(auto_any_t col, type2type<T *, C> *, boost::mpl::true_ *) // null-terminated C-style strings
+{
+ return reverse_iterator<T *>(auto_any_cast<T *, boost::mpl::false_>(col));
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// rdone
+//
+template<typename T, typename C>
+inline bool rdone(auto_any_t cur, auto_any_t end, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type iter_t;
+ return auto_any_cast<iter_t, boost::mpl::false_>(cur) == auto_any_cast<iter_t, boost::mpl::false_>(end);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// rnext
+//
+template<typename T, typename C>
+inline void rnext(auto_any_t cur, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type iter_t;
+ ++auto_any_cast<iter_t, boost::mpl::false_>(cur);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// rderef
+//
+template<typename T, typename C>
+inline BOOST_DEDUCED_TYPENAME foreach_reference<T, C>::type
+rderef(auto_any_t cur, type2type<T, C> *)
+{
+ typedef BOOST_DEDUCED_TYPENAME foreach_reverse_iterator<T, C>::type iter_t;
+ return *auto_any_cast<iter_t, boost::mpl::false_>(cur);
+}
+
+} // namespace foreach_detail_
+} // namespace boost
+
+// Suppress a bogus code analysis warning on vc8+
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
+# define BOOST_FOREACH_SUPPRESS_WARNINGS() __pragma(warning(suppress:6001))
+#else
+# define BOOST_FOREACH_SUPPRESS_WARNINGS()
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+// Define a macro for giving hidden variables a unique name. Not strictly
+// needed, but eliminates some warnings on some compilers.
+#if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1500))
+// With some versions of MSVC, use of __LINE__ to create unique identifiers
+// can fail when the Edit-and-Continue debug flag is used.
+# define BOOST_FOREACH_ID(x) x
+#else
+# define BOOST_FOREACH_ID(x) BOOST_PP_CAT(x, __LINE__)
+#endif
+
+// A sneaky way to get the type of the collection without evaluating the expression
+#define BOOST_FOREACH_TYPEOF(COL) \
+ (true ? 0 : boost::foreach_detail_::encode_type(COL, boost::foreach_detail_::is_const_(COL)))
+
+// returns true_* if the type is noncopyable
+#define BOOST_FOREACH_IS_NONCOPYABLE(COL) \
+ boost_foreach_is_noncopyable( \
+ boost::foreach_detail_::to_ptr(COL) \
+ , boost_foreach_argument_dependent_lookup_hack_value)
+
+// returns true_* if the type is a lightweight proxy (and is not noncopyable)
+#define BOOST_FOREACH_IS_LIGHTWEIGHT_PROXY(COL) \
+ boost::foreach_detail_::and_( \
+ boost::foreach_detail_::not_(BOOST_FOREACH_IS_NONCOPYABLE(COL)) \
+ , boost_foreach_is_lightweight_proxy( \
+ boost::foreach_detail_::to_ptr(COL) \
+ , boost_foreach_argument_dependent_lookup_hack_value))
+
+#ifdef BOOST_FOREACH_COMPILE_TIME_CONST_RVALUE_DETECTION
+///////////////////////////////////////////////////////////////////////////////
+// R-values and const R-values supported here with zero runtime overhead
+///////////////////////////////////////////////////////////////////////////////
+
+// No variable is needed to track the rvalue-ness of the collection expression
+# define BOOST_FOREACH_PREAMBLE() \
+ BOOST_FOREACH_SUPPRESS_WARNINGS()
+
+// Evaluate the collection expression
+# define BOOST_FOREACH_EVALUATE(COL) \
+ (COL)
+
+# define BOOST_FOREACH_SHOULD_COPY(COL) \
+ (true ? 0 : boost::foreach_detail_::or_( \
+ BOOST_FOREACH_IS_RVALUE(COL) \
+ , BOOST_FOREACH_IS_LIGHTWEIGHT_PROXY(COL)))
+
+#elif defined(BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION)
+///////////////////////////////////////////////////////////////////////////////
+// R-values and const R-values supported here
+///////////////////////////////////////////////////////////////////////////////
+
+// Declare a variable to track the rvalue-ness of the collection expression
+# define BOOST_FOREACH_PREAMBLE() \
+ BOOST_FOREACH_SUPPRESS_WARNINGS() \
+ if (bool BOOST_FOREACH_ID(_foreach_is_rvalue) = false) {} else
+
+// Evaluate the collection expression, and detect if it is an lvalue or and rvalue
+# define BOOST_FOREACH_EVALUATE(COL) \
+ (true ? boost::foreach_detail_::make_probe((COL), BOOST_FOREACH_ID(_foreach_is_rvalue)) : (COL))
+
+// The rvalue/lvalue-ness of the collection expression is determined dynamically, unless
+// type type is an array or is noncopyable or is non-const, in which case we know it's an lvalue.
+// If the type happens to be a lightweight proxy, always make a copy.
+# define BOOST_FOREACH_SHOULD_COPY(COL) \
+ (boost::foreach_detail_::should_copy_impl( \
+ true ? 0 : boost::foreach_detail_::or_( \
+ boost::foreach_detail_::is_array_(COL) \
+ , BOOST_FOREACH_IS_NONCOPYABLE(COL) \
+ , boost::foreach_detail_::not_(boost::foreach_detail_::is_const_(COL))) \
+ , true ? 0 : BOOST_FOREACH_IS_LIGHTWEIGHT_PROXY(COL) \
+ , &BOOST_FOREACH_ID(_foreach_is_rvalue)))
+
+#elif !defined(BOOST_FOREACH_NO_RVALUE_DETECTION)
+///////////////////////////////////////////////////////////////////////////////
+// R-values supported here, const R-values NOT supported here
+///////////////////////////////////////////////////////////////////////////////
+
+// No variable is needed to track the rvalue-ness of the collection expression
+# define BOOST_FOREACH_PREAMBLE() \
+ BOOST_FOREACH_SUPPRESS_WARNINGS()
+
+// Evaluate the collection expression
+# define BOOST_FOREACH_EVALUATE(COL) \
+ (COL)
+
+// Determine whether the collection expression is an lvalue or an rvalue.
+// NOTE: this gets the answer wrong for const rvalues.
+# define BOOST_FOREACH_SHOULD_COPY(COL) \
+ (true ? 0 : boost::foreach_detail_::or_( \
+ boost::foreach_detail_::is_rvalue_((COL), 0) \
+ , BOOST_FOREACH_IS_LIGHTWEIGHT_PROXY(COL)))
+
+#else
+///////////////////////////////////////////////////////////////////////////////
+// R-values NOT supported here
+///////////////////////////////////////////////////////////////////////////////
+
+// No variable is needed to track the rvalue-ness of the collection expression
+# define BOOST_FOREACH_PREAMBLE() \
+ BOOST_FOREACH_SUPPRESS_WARNINGS()
+
+// Evaluate the collection expression
+# define BOOST_FOREACH_EVALUATE(COL) \
+ (COL)
+
+// Can't use rvalues with BOOST_FOREACH (unless they are lightweight proxies)
+# define BOOST_FOREACH_SHOULD_COPY(COL) \
+ (true ? 0 : BOOST_FOREACH_IS_LIGHTWEIGHT_PROXY(COL))
+
+#endif
+
+#define BOOST_FOREACH_CONTAIN(COL) \
+ boost::foreach_detail_::contain( \
+ BOOST_FOREACH_EVALUATE(COL) \
+ , BOOST_FOREACH_SHOULD_COPY(COL))
+
+#define BOOST_FOREACH_BEGIN(COL) \
+ boost::foreach_detail_::begin( \
+ BOOST_FOREACH_ID(_foreach_col) \
+ , BOOST_FOREACH_TYPEOF(COL) \
+ , BOOST_FOREACH_SHOULD_COPY(COL))
+
+#define BOOST_FOREACH_END(COL) \
+ boost::foreach_detail_::end( \
+ BOOST_FOREACH_ID(_foreach_col) \
+ , BOOST_FOREACH_TYPEOF(COL) \
+ , BOOST_FOREACH_SHOULD_COPY(COL))
+
+#define BOOST_FOREACH_DONE(COL) \
+ boost::foreach_detail_::done( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_ID(_foreach_end) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+#define BOOST_FOREACH_NEXT(COL) \
+ boost::foreach_detail_::next( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+#define BOOST_FOREACH_DEREF(COL) \
+ boost::foreach_detail_::deref( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+#define BOOST_FOREACH_RBEGIN(COL) \
+ boost::foreach_detail_::rbegin( \
+ BOOST_FOREACH_ID(_foreach_col) \
+ , BOOST_FOREACH_TYPEOF(COL) \
+ , BOOST_FOREACH_SHOULD_COPY(COL))
+
+#define BOOST_FOREACH_REND(COL) \
+ boost::foreach_detail_::rend( \
+ BOOST_FOREACH_ID(_foreach_col) \
+ , BOOST_FOREACH_TYPEOF(COL) \
+ , BOOST_FOREACH_SHOULD_COPY(COL))
+
+#define BOOST_FOREACH_RDONE(COL) \
+ boost::foreach_detail_::rdone( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_ID(_foreach_end) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+#define BOOST_FOREACH_RNEXT(COL) \
+ boost::foreach_detail_::rnext( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+#define BOOST_FOREACH_RDEREF(COL) \
+ boost::foreach_detail_::rderef( \
+ BOOST_FOREACH_ID(_foreach_cur) \
+ , BOOST_FOREACH_TYPEOF(COL))
+
+///////////////////////////////////////////////////////////////////////////////
+// BOOST_FOREACH
+//
+// For iterating over collections. Collections can be
+// arrays, null-terminated strings, or STL containers.
+// The loop variable can be a value or reference. For
+// example:
+//
+// std::list<int> int_list(/*stuff*/);
+// BOOST_FOREACH(int &i, int_list)
+// {
+// /*
+// * loop body goes here.
+// * i is a reference to the int in int_list.
+// */
+// }
+//
+// Alternately, you can declare the loop variable first,
+// so you can access it after the loop finishes. Obviously,
+// if you do it this way, then the loop variable cannot be
+// a reference.
+//
+// int i;
+// BOOST_FOREACH(i, int_list)
+// { ... }
+//
+#define BOOST_FOREACH(VAR, COL) \
+ BOOST_FOREACH_PREAMBLE() \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) {} else \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) {} else \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_END(COL)) {} else \
+ for (bool BOOST_FOREACH_ID(_foreach_continue) = true; \
+ BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_DONE(COL); \
+ BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_NEXT(COL) : (void)0) \
+ if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) {} else \
+ for (VAR = BOOST_FOREACH_DEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true)
+
+///////////////////////////////////////////////////////////////////////////////
+// BOOST_REVERSE_FOREACH
+//
+// For iterating over collections in reverse order. In
+// all other respects, BOOST_REVERSE_FOREACH is like
+// BOOST_FOREACH.
+//
+#define BOOST_REVERSE_FOREACH(VAR, COL) \
+ BOOST_FOREACH_PREAMBLE() \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) {} else \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_RBEGIN(COL)) {} else \
+ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_REND(COL)) {} else \
+ for (bool BOOST_FOREACH_ID(_foreach_continue) = true; \
+ BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_RDONE(COL); \
+ BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_RNEXT(COL) : (void)0) \
+ if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) {} else \
+ for (VAR = BOOST_FOREACH_RDEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true)
+
+#endif