bool parse_sequence(
Left const& left, Right const& right
, Iterator& first, Iterator const& last
, Context const& context, Attribute& attr, traits::plain_attribute)
{
typedef typename traits::attribute_of<Left>::type l_attr_type;
typedef typename traits::attribute_of<Right>::type r_attr_type;
typedef traits::make_attribute<l_attr_type, Attribute> l_make_attribute;
typedef traits::make_attribute<r_attr_type, Attribute> r_make_attribute;
typename l_make_attribute::type l_attr = l_make_attribute::call(attr);
typename r_make_attribute::type r_attr = r_make_attribute::call(attr);
Iterator save = first;
if (left.parse(first, last, context, l_attr)
&& right.parse(first, last, context, r_attr))
return true;
first = save;
return false;
}
bool parse_sequence(
Left const& left, Right const& right
, Iterator& first, Iterator const& last
, Context const& context, Attribute& attr, traits::tuple_attribute)
{
typedef detail::partition_attribute<Left, Right, Attribute> partition;
typedef typename partition::l_pass l_pass;
typedef typename partition::r_pass r_pass;
typename partition::l_part l_part = partition::left(attr);
typename partition::r_part r_part = partition::right(attr);
typename l_pass::type l_attr = l_pass::call(l_part);
typename r_pass::type r_attr = r_pass::call(r_part);
Iterator save = first;
if (left.parse(first, last, context, l_attr)
&& right.parse(first, last, context, r_attr))
return true;
first = save;
return false;
}