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New smart pointer documentation. Related clean-up of the smart pointer

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library. Changing includes to include the new individual smart pointer
headers. Replacing old smart pointer library with an include of the new
smart pointer headers. Simplify ifdefs that involve the member templates
macros now that BOOST_MSVC6_MEMBER_TEMPLATES is also guaranteed to bet
set for platforms that have full member templates.


[SVN r12647]
This commit is contained in:
Darin Adler committed 2002-02-02 18:36:12 +00:00
1 parent d3c76575f9
commit 1a7cd887e4
21 files changed
+1367 -1425
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include/boost/weak_ptr.hpp
+20 -16
View File
@@ -67,14 +67,20 @@ public:
template<typename Y>
weak_ptr(weak_ptr<Y> const & r, detail::dynamic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
{
if(px == 0) // need to allocate new counter -- the cast failed
{
if (px == 0) // need to allocate new counter -- the cast failed
pn = detail::weak_count();
}
}
template<typename Y>
weak_ptr & operator=(weak_ptr<Y> const & r) // nothrow?
weak_ptr & operator=(weak_ptr<Y> const & r) // never throws
{
px = r.px;
pn = r.pn;
return *this;
}
template<typename Y>
weak_ptr & operator=(shared_ptr<Y> const & r) // never throws
{
px = r.px;
pn = r.pn;
@@ -86,11 +92,6 @@ public:
this_type().swap(*this);
}
long use_count() const // never throws
{
return pn.use_count();
}
T * get() const // never throws
{
return use_count() == 0? 0: px;
@@ -99,7 +100,6 @@ public:
typename detail::shared_ptr_traits<T>::reference operator* () const // never throws
{
T * p = get();
BOOST_ASSERT(p != 0);
return *p;
}
@@ -107,11 +107,15 @@ public:
T * operator-> () const // never throws
{
T * p = get();
BOOST_ASSERT(p != 0);
return p;
}
long use_count() const // never throws
{
return pn.use_count();
}
void swap(weak_ptr<T> & other) // never throws
{
std::swap(px, other.px);
@@ -149,6 +153,11 @@ template<class T> inline bool operator<(weak_ptr<T> const & a, weak_ptr<T> const
return std::less<T*>()(a.get(), b.get());
}
template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b)
{
a.swap(b);
}
template<class T, class U> weak_ptr<T> shared_static_cast(weak_ptr<U> const & r)
{
return weak_ptr<T>(r, detail::static_cast_tag());
@@ -159,11 +168,6 @@ template<class T, class U> weak_ptr<T> shared_dynamic_cast(weak_ptr<U> const & r
return weak_ptr<T>(r, detail::dynamic_cast_tag());
}
template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b)
{
a.swap(b);
}
// get_pointer() enables boost::mem_fn to recognize weak_ptr
template<class T> inline T * get_pointer(weak_ptr<T> const & p)