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vc++ workaround

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[SVN r9949]
This commit is contained in:
Jeremy Siek
2001-04-23 22:27:34 +00:00
parent 3e773ebaf7
commit 8a1daa735b
2 changed files with 27 additions and 4 deletions
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29
include/boost/pending/detail/property.hpp
View File

@@ -40,10 +40,12 @@ namespace boost {
return p.m_value;
}
};
template <>
struct property_value_dispatch<0> {
template <class Property, class T, class Tag>
template <class Property>
struct property_value_end {
template <class T> class result { typedef T type; };
template <class T, class Tag>
static T& get_value(Property& p, T* t, Tag tag) {
typedef typename Property::next_type Next;
typedef typename Next::tag_type Next_tag;
@@ -51,7 +53,7 @@ namespace boost {
return property_value_dispatch<match>
::get_value(static_cast<Next&>(p), t, tag);
}
template <class Property, class T, class Tag>
template <class T, class Tag>
static const T& const_get_value(const Property& p, T* t, Tag tag) {
typedef typename Property::next_type Next;
typedef typename Next::tag_type Next_tag;
@@ -59,6 +61,11 @@ namespace boost {
return property_value_dispatch<match>
::const_get_value(static_cast<const Next&>(p), t, tag);
}
};
template <>
struct property_value_end<no_property> {
template <class T> class result { typedef detail::error_property_not_found type; };
// Stop the recursion and return error
template <class T, class Tag>
static detail::error_property_not_found&
@@ -74,6 +81,20 @@ namespace boost {
}
};
template <>
struct property_value_dispatch<0> {
template <class Property, class T, class Tag>
static typename property_value_end<Property>::template result<T>::type&
get_value(Property& p, T* t, Tag tag) {
return property_value_end<Property>::get_value(p, t, tag);
}
template <class Property, class T, class Tag>
static const typename property_value_end<Property>::template result<T>::type&
const_get_value(const Property& p, T* t, Tag tag) {
return property_value_end<Property>::const_get_value(p, t, tag);
}
};
template <class Property>
struct build_property_tag_value_alist
{

2
include/boost/pending/property.hpp
View File

@@ -9,6 +9,8 @@ namespace boost {
typedef no_property tag_type;
typedef no_property next_type;
typedef no_property value_type;
enum { num = 0 };
typedef void kind;
};
template <class Tag, class T, class Base = no_property>
struct property : public Base {