feedc0de/boost_fusion
1
0
Fork 0
forked from boostorg/fusion
Code Pull Requests Activity

better operator handling

Browse Source 
[SVN r36126]
This commit is contained in:
Joel de Guzman
2006-11-21 02:01:13 +00:00
parent 1b7f4a1a47
commit 4f14542256
9 changed files with 182 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
include/boost/fusion/sequence/comparison/less_equal.hpp
View File

@ -12,6 +12,7 @@
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/sequence/comparison/detail/enable_comparison.hpp>
#if defined(FUSION_DIRECT_OPERATOR_USAGE)
#include <boost/fusion/sequence/comparison/detail/less_equal.hpp>
@ -19,18 +20,11 @@
#include <boost/fusion/sequence/comparison/less.hpp>
#endif
#include <boost/fusion/sequence/comparison/detail/enable_comparison.hpp>
#include <boost/utility/enable_if.hpp>
namespace boost { namespace fusion
{
template <typename Seq1, typename Seq2>
inline typename
enable_if<
detail::enable_comparison<Seq1, Seq2>
, bool
>::type
operator<=(Seq1 const& a, Seq2 const& b)
inline bool
less_equal(Seq1 const& a, Seq2 const& b)
{
#if defined(FUSION_DIRECT_OPERATOR_USAGE)
return detail::sequence_less_equal<Seq1 const, Seq2 const>::
@ -39,6 +33,49 @@ namespace boost { namespace fusion
return !(b < a);
#endif
}
namespace operators
{
#if defined(BOOST_MSVC) && (BOOST_MSVC <= 1400)
// Workaround for VC8.0 and VC7.1
template <typename Seq1, typename Seq2>
inline bool
operator<=(sequence_base<Seq1> const& a, sequence_base<Seq2> const& b)
{
return less_equal(a.derived(), b.derived());
}
template <typename Seq1, typename Seq2>
inline typename disable_if<detail::is_native_fusion_sequence<Seq2>, bool>::type
operator<=(sequence_base<Seq1> const& a, Seq2 const& b)
{
return less_equal(a.derived(), b);
}
template <typename Seq1, typename Seq2>
inline typename disable_if<detail::is_native_fusion_sequence<Seq1>, bool>::type
operator<=(Seq1 const& a, sequence_base<Seq2> const& b)
{
return less_equal(a, b.derived());
}
#else
// Somehow VC8.0 and VC7.1 does not like this code
// but barfs somewhere else.
template <typename Seq1, typename Seq2>
inline typename
enable_if<
detail::enable_comparison<Seq1, Seq2>
, bool
>::type
operator<=(Seq1 const& a, Seq2 const& b)
{
return fusion::less_equal(a, b);
}
#endif
}
using operators::operator<=;
}}
#endif