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Spirit: another attempt to fix the sequence compilation problem in Karma when variants are involved

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[SVN r81910]
This commit is contained in:
Hartmut Kaiser
2012-12-13 19:22:53 +00:00
parent 26c38cb6fa
commit 8643b8ede0
1 changed files with 11 additions and 3 deletions
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14
include/boost/spirit/home/support/attributes.hpp
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@@ -524,11 +524,17 @@ namespace boost { namespace spirit { namespace traits
{
struct attribute_size_visitor : static_visitor<>
{
attribute_size_visitor(std::size_t& size)
:size_(size)
{}
template <typename T>
typename attribute_size<T>::type operator()(T const& val) const
typename void operator()(T const& val)
{
return spirit::traits::size(val);
size_ = spirit::traits::size(val);
}
std::size_t& size_;
};
}
@@ -539,7 +545,9 @@ namespace boost { namespace spirit { namespace traits
static std::size_t call(variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& val)
{
return apply_visitor(detail::attribute_size_visitor(), val);
std::size_t size = 0;
apply_visitor(detail::attribute_size_visitor(size), val);
return size;
}
};