boostorg/fusion
1
0
Fork 1
mirror of https://github.com/boostorg/fusion.git synced 2025-07-22 16:47:18 +02:00
Code Issues Packages Projects Releases Wiki Activity

lvalue fold states. Fixes #4582

Browse Source 
[SVN r64947]
This commit is contained in:
Christopher Schmidt
2010-08-22 13:16:49 +00:00
parent 084b3028d8
commit a18ab9db86
1 changed files with 32 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
include/boost/fusion/algorithm/iteration/detail/fold.hpp
View File

@ -68,7 +68,7 @@ namespace boost { namespace fusion
namespace detail
{
template<typename State, typename It, typename F>
struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)
struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)
: boost::result_of<
F(
typename add_reference<typename add_const<State>::type>::type,
@ -102,24 +102,20 @@ namespace boost { namespace fusion
It3;
It3 it3 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it2);
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2;
State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State2,It2,F>::type State3;
State3 const state3=f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2));
return BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<
Result
, N-4
>::call(
f(
f(
f(
f(
state,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(
it0)
),
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)
),
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2)
),
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it3)
),
f(state3,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it3)),
fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it3),
f);
}
@ -145,17 +141,13 @@ namespace boost { namespace fusion
It2;
It2 it2 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1);
return f(
f(
f(
state,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)
),
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)
),
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(
fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1)
));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2;
State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1));
return f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2));
}
};
@ -166,9 +158,11 @@ namespace boost { namespace fusion
static Result
call(State const& state,It0 const& it0,F f)
{
typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1;
State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
return f(
f(state,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)),
state1,
BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(
fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0)));
}
@ -201,7 +195,7 @@ namespace boost { namespace fusion
struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)
{
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
@ -213,7 +207,7 @@ namespace boost { namespace fusion
>::type
it1;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest1
, it1
, F
@ -223,7 +217,7 @@ namespace boost { namespace fusion
result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it1>::type
it2;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest2
, it2
, F
@ -236,7 +230,7 @@ namespace boost { namespace fusion
typedef typename
BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
typename BOOST_PP_CAT(
BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest3
, it3
, F
@ -259,7 +253,7 @@ namespace boost { namespace fusion
>
{
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
@ -272,9 +266,9 @@ namespace boost { namespace fusion
it1;
typedef typename
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
typename BOOST_PP_CAT(
BOOST_FUSION_FOLD_NAME, _rvalue_state)<
BOOST_FUSION_FOLD_NAME, _lvalue_state)<
rest1
, it1
, F
@ -294,8 +288,8 @@ namespace boost { namespace fusion
, F
, 2
>
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F
@ -314,7 +308,7 @@ namespace boost { namespace fusion
, F
, 1
>
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _rvalue_state)<
: BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
StateRef
, It0 const
, F