--- /dev/null
+// Copyright (C) 2004 Arkadiy Vertleyb
+// Copyright (C) 2005 Peder Holt
+// 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)
+
+#ifndef BOOST_TYPEOF_TEMPLATE_ENCODING_HPP_INCLUDED
+#define BOOST_TYPEOF_TEMPLATE_ENCODING_HPP_INCLUDED
+
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/repetition/enum_trailing.hpp>
+#include <boost/preprocessor/control/iif.hpp>
+#include <boost/preprocessor/detail/is_unary.hpp>
+#include <boost/preprocessor/repetition/repeat.hpp>
+#include <boost/preprocessor/tuple/eat.hpp>
+#include <boost/preprocessor/seq/transform.hpp>
+#include <boost/preprocessor/seq/for_each_i.hpp>
+#include <boost/preprocessor/seq/cat.hpp>
+
+#include <boost/typeof/encode_decode.hpp>
+#include <boost/typeof/int_encoding.hpp>
+
+#include <boost/typeof/type_template_param.hpp>
+#include <boost/typeof/integral_template_param.hpp>
+#include <boost/typeof/template_template_param.hpp>
+
+#ifdef __BORLANDC__
+#define BOOST_TYPEOF_QUALIFY(P) self_t::P
+#else
+#define BOOST_TYPEOF_QUALIFY(P) P
+#endif
+// The template parameter description, entered by the user,
+// is converted into a polymorphic "object"
+// that is used to generate the code responsible for
+// encoding/decoding the parameter, etc.
+
+// make sure to cat the sequence first, and only then add the prefix.
+#define BOOST_TYPEOF_MAKE_OBJ(elem) BOOST_PP_CAT(\
+ BOOST_TYPEOF_MAKE_OBJ,\
+ BOOST_PP_SEQ_CAT((_) BOOST_TYPEOF_TO_SEQ(elem))\
+ )
+
+#define BOOST_TYPEOF_TO_SEQ(tokens) BOOST_TYPEOF_ ## tokens ## _BOOST_TYPEOF
+
+// BOOST_TYPEOF_REGISTER_TEMPLATE
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE_EXPLICIT_ID(Name, Params, Id)\
+ BOOST_TYPEOF_REGISTER_TEMPLATE_IMPL(\
+ Name,\
+ BOOST_TYPEOF_MAKE_OBJS(BOOST_TYPEOF_TOSEQ(Params)),\
+ BOOST_PP_SEQ_SIZE(BOOST_TYPEOF_TOSEQ(Params)),\
+ Id)
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE(Name, Params)\
+ BOOST_TYPEOF_REGISTER_TEMPLATE_EXPLICIT_ID(Name, Params, BOOST_TYPEOF_UNIQUE_ID())
+
+#define BOOST_TYPEOF_OBJECT_MAKER(s, data, elem)\
+ BOOST_TYPEOF_MAKE_OBJ(elem)
+
+#define BOOST_TYPEOF_MAKE_OBJS(Params)\
+ BOOST_PP_SEQ_TRANSFORM(BOOST_TYPEOF_OBJECT_MAKER, ~, Params)
+
+// As suggested by Paul Mensonides:
+
+#define BOOST_TYPEOF_TOSEQ(x)\
+ BOOST_PP_IIF(\
+ BOOST_PP_IS_UNARY(x),\
+ x BOOST_PP_TUPLE_EAT(3), BOOST_PP_REPEAT\
+ )(x, BOOST_TYPEOF_TOSEQ_2, ~)
+
+#define BOOST_TYPEOF_TOSEQ_2(z, n, _) (class)
+
+// BOOST_TYPEOF_VIRTUAL
+
+#define BOOST_TYPEOF_CAT_4(a, b, c, d) BOOST_TYPEOF_CAT_4_I(a, b, c, d)
+#define BOOST_TYPEOF_CAT_4_I(a, b, c, d) a ## b ## c ## d
+
+#define BOOST_TYPEOF_VIRTUAL(Fun, Obj)\
+ BOOST_TYPEOF_CAT_4(BOOST_TYPEOF_, BOOST_PP_SEQ_HEAD(Obj), _, Fun)
+
+// BOOST_TYPEOF_SEQ_ENUM[_TRAILING][_1]
+// Two versions provided due to reentrancy issue
+
+#define BOOST_TYPEOF_SEQ_EXPAND_ELEMENT(z,n,seq)\
+ BOOST_PP_SEQ_ELEM(0,seq) (z,n,BOOST_PP_SEQ_ELEM(n,BOOST_PP_SEQ_ELEM(1,seq)))
+
+#define BOOST_TYPEOF_SEQ_ENUM(seq,macro)\
+ BOOST_PP_ENUM(BOOST_PP_SEQ_SIZE(seq),BOOST_TYPEOF_SEQ_EXPAND_ELEMENT,(macro)(seq))
+
+#define BOOST_TYPEOF_SEQ_ENUM_TRAILING(seq,macro)\
+ BOOST_PP_ENUM_TRAILING(BOOST_PP_SEQ_SIZE(seq),BOOST_TYPEOF_SEQ_EXPAND_ELEMENT,(macro)(seq))
+
+#define BOOST_TYPEOF_SEQ_EXPAND_ELEMENT_1(z,n,seq)\
+ BOOST_PP_SEQ_ELEM(0,seq) (z,n,BOOST_PP_SEQ_ELEM(n,BOOST_PP_SEQ_ELEM(1,seq)))
+
+#define BOOST_TYPEOF_SEQ_ENUM_1(seq,macro)\
+ BOOST_PP_ENUM(BOOST_PP_SEQ_SIZE(seq),BOOST_TYPEOF_SEQ_EXPAND_ELEMENT_1,(macro)(seq))
+
+#define BOOST_TYPEOF_SEQ_ENUM_TRAILING_1(seq,macro)\
+ BOOST_PP_ENUM_TRAILING(BOOST_PP_SEQ_SIZE(seq),BOOST_TYPEOF_SEQ_EXPAND_ELEMENT_1,(macro)(seq))
+
+//
+
+#define BOOST_TYPEOF_PLACEHOLDER(z, n, elem)\
+ BOOST_TYPEOF_VIRTUAL(PLACEHOLDER, elem)(elem)
+
+#define BOOST_TYPEOF_PLACEHOLDER_TYPES(z, n, elem)\
+ BOOST_TYPEOF_VIRTUAL(PLACEHOLDER_TYPES, elem)(elem, n)
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE_ENCODE_PARAM(r, data, n, elem)\
+ BOOST_TYPEOF_VIRTUAL(ENCODE, elem)(elem, n)
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE_DECODE_PARAM(r, data, n, elem)\
+ BOOST_TYPEOF_VIRTUAL(DECODE, elem)(elem, n)
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE_PARAM_PAIR(z, n, elem) \
+ BOOST_TYPEOF_VIRTUAL(EXPANDTYPE, elem)(elem) BOOST_PP_CAT(P, n)
+
+#define BOOST_TYPEOF_REGISTER_DEFAULT_TEMPLATE_TYPE(Name,Params,ID)\
+ Name< BOOST_PP_ENUM_PARAMS(BOOST_PP_SEQ_SIZE(Params), P) >
+
+//Since we are creating an internal decode struct, we need to use different template names, T instead of P.
+#define BOOST_TYPEOF_REGISTER_DECODER_TYPE_PARAM_PAIR(z,n,elem) \
+ BOOST_TYPEOF_VIRTUAL(EXPANDTYPE, elem)(elem) BOOST_PP_CAT(T, n)
+
+//Default template param decoding
+
+#define BOOST_TYPEOF_TYPEDEF_DECODED_TEMPLATE_TYPE(Name,Params)\
+ typedef Name<BOOST_PP_ENUM_PARAMS(BOOST_PP_SEQ_SIZE(Params),BOOST_TYPEOF_QUALIFY(P))> type;
+
+//Branch the decoding
+#define BOOST_TYPEOF_TYPEDEF_DECODED_TYPE(Name,Params)\
+ BOOST_PP_IF(BOOST_TYPEOF_HAS_TEMPLATES(Params),\
+ BOOST_TYPEOF_TYPEDEF_DECODED_TEMPLATE_TEMPLATE_TYPE,\
+ BOOST_TYPEOF_TYPEDEF_DECODED_TEMPLATE_TYPE)(Name,Params)
+
+#define BOOST_TYPEOF_REGISTER_TEMPLATE_IMPL(Name, Params, Size, ID)\
+ BOOST_TYPEOF_BEGIN_ENCODE_NS\
+ BOOST_TYPEOF_REGISTER_TEMPLATE_TEMPLATE_IMPL(Name, Params, ID)\
+ template<class V\
+ BOOST_TYPEOF_SEQ_ENUM_TRAILING(Params, BOOST_TYPEOF_REGISTER_TEMPLATE_PARAM_PAIR)\
+ >\
+ struct encode_type_impl<V, Name<BOOST_PP_ENUM_PARAMS(Size, P)> >\
+ {\
+ typedef typename boost::type_of::push_back<V, boost::mpl::size_t<ID> >::type V0;\
+ BOOST_PP_SEQ_FOR_EACH_I(BOOST_TYPEOF_REGISTER_TEMPLATE_ENCODE_PARAM, ~, Params)\
+ typedef BOOST_PP_CAT(V, Size) type;\
+ };\
+ template<class Iter>\
+ struct decode_type_impl<boost::mpl::size_t<ID>, Iter>\
+ {\
+ typedef decode_type_impl<boost::mpl::size_t<ID>, Iter> self_t;\
+ typedef boost::mpl::size_t<ID> self_id;\
+ typedef Iter iter0;\
+ BOOST_PP_SEQ_FOR_EACH_I(BOOST_TYPEOF_REGISTER_TEMPLATE_DECODE_PARAM, ~, Params)\
+ BOOST_TYPEOF_TYPEDEF_DECODED_TYPE(Name, Params)\
+ typedef BOOST_PP_CAT(iter, Size) iter;\
+ };\
+ BOOST_TYPEOF_END_ENCODE_NS
+
+#endif//BOOST_TYPEOF_TEMPLATE_ENCODING_HPP_INCLUDED
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