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for_each changes

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[SVN r13513]
This commit is contained in:
Aleksey Gurtovoy
2002-04-17 02:25:46 +00:00
parent 4363813010
commit 88e7b625f3
1 changed files with 12 additions and 17 deletions
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29
include/boost/python/class.hpp
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@@ -195,8 +195,7 @@ class class_ : public objects::class_base
ids[0] = converter::undecorated_type_id<T>();
// Write the rest of the elements into succeeding positions.
class_id* p = ids + 1;
mpl::fold<bases, void, detail::write_type_id>::execute(&p);
mpl::for_each<bases>(detail::write_type_id(ids + 1));
}
BOOST_STATIC_CONSTANT(
@@ -238,25 +237,21 @@ inline class_<T,X1,X2,X3>::class_(char const* name)
namespace detail
{
// This is an mpl BinaryMetaFunction object with a runtime behavior,
// which is to write the id of the type which is passed as its 2nd
// compile-time argument into the iterator pointed to by its runtime
// argument
// A function object that on each invocation writes the id of
// the type 'T' into the iterator passed to it in the constructor
struct write_type_id
{
// The first argument is Ignored because mpl::for_each is still
// currently an accumulate (reduce) implementation.
template <class Ignored, class T> struct apply
{
// also an artifact of accumulate-based for_each
typedef void type;
write_type_id(converter::undecorated_type_id_t* iter)
: m_iter(iter)
{}
// Here's the runtime behavior
static void execute(converter::undecorated_type_id_t** p)
{
*(*p)++ = converter::undecorated_type_id<T>();
}
template <class T> void operator()(boost::mpl::identity<T>)
{
*m_iter++ = converter::undecorated_type_id<T>();
};
private:
converter::undecorated_type_id_t* m_iter;
};