// 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 |