mirror of
https://github.com/jezhiggins/arabica
synced 2024-12-27 21:58:30 +01:00
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
#ifndef JEZUK_DOM_PROXY_H
|
|
#define JEZUK_DOM_PROXY_H
|
|
|
|
namespace Arabica
|
|
{
|
|
namespace DOM
|
|
{
|
|
|
|
template<class ImplementationT>
|
|
class Proxy
|
|
{
|
|
public:
|
|
typedef ImplementationT value_type;
|
|
|
|
Proxy() : impl_(0) { }
|
|
Proxy(ImplementationT* impl) : impl_(0) { setImpl(impl); }
|
|
Proxy(const Proxy& rhs) : impl_(0) { setImpl(rhs.impl_); }
|
|
~Proxy() { setImpl(0); }
|
|
|
|
Proxy& operator=(const Proxy& rhs)
|
|
{
|
|
setImpl(rhs.impl_);
|
|
return *this;
|
|
} // operator=
|
|
Proxy& operator=(ImplementationT* const impl)
|
|
{
|
|
setImpl(impl);
|
|
return *this;
|
|
} // operator=
|
|
|
|
operator bool() const { return 0 != impl_; }
|
|
bool operator==(int dummy) const { return (dummy == 0) && (impl_ == 0); }
|
|
bool operator!=(int dummy) const { return !(operator==(dummy)); }
|
|
bool operator==(const Proxy& rhs) const { return (impl_ == rhs.impl_); }
|
|
bool operator!=(const Proxy& rhs) const { return !(operator==(rhs)); }
|
|
bool operator< (const Proxy& rhs) const { return impl_ < rhs.impl_; }
|
|
bool operator==(ImplementationT* const impl) const { return (impl_ == impl); }
|
|
bool operator!=(ImplementationT* const impl) const { return !(operator==(impl)); }
|
|
|
|
const ImplementationT* impl() const { return impl_; }
|
|
ImplementationT* impl() { return impl_; }
|
|
|
|
ImplementationT* operator*() const
|
|
{
|
|
return impl_;
|
|
} // operator*
|
|
|
|
ImplementationT* operator->() const
|
|
{
|
|
return impl_;
|
|
} // operator->
|
|
|
|
private:
|
|
void setImpl(ImplementationT* const impl)
|
|
{
|
|
if(impl_)
|
|
{
|
|
impl_->releaseRef();
|
|
impl_ = 0;
|
|
}
|
|
if(impl)
|
|
{
|
|
impl_ = impl;
|
|
impl_->addRef();
|
|
} // if(impl)
|
|
} // setImpl
|
|
|
|
// the thing that actually does the work!
|
|
ImplementationT* impl_;
|
|
}; // class Proxy
|
|
|
|
} // namespace DOM
|
|
} // namespace Arabica
|
|
|
|
#endif
|
|
|