#ifndef GUniquePtr_h
#define GUniquePtr_h
#if USE(GLIB)
#include <gio/gio.h>
#include <wtf/Noncopyable.h>
namespace WTF {
template<typename T>
struct GPtrDeleter {
void operator()(T* ptr) const { g_free(ptr); }
};
template<typename T>
using GUniquePtr = std::unique_ptr<T, GPtrDeleter<T>>;
#define FOR_EACH_GLIB_DELETER(macro) \
macro(GError, g_error_free) \
macro(GList, g_list_free) \
macro(GSList, g_slist_free) \
macro(GPatternSpec, g_pattern_spec_free) \
macro(GDir, g_dir_close) \
macro(GTimer, g_timer_destroy) \
macro(GKeyFile, g_key_file_free)
#define WTF_DEFINE_GPTR_DELETER(typeName, deleterFunc) \
template<> struct GPtrDeleter<typeName> \
{ \
void operator() (typeName* ptr) const \
{ \
if (ptr) \
deleterFunc(ptr); \
} \
};
FOR_EACH_GLIB_DELETER(WTF_DEFINE_GPTR_DELETER)
#undef FOR_EACH_GLIB_DELETER
template <typename T> class GUniqueOutPtr {
WTF_MAKE_NONCOPYABLE(GUniqueOutPtr);
public:
GUniqueOutPtr()
: m_ptr(nullptr)
{
}
~GUniqueOutPtr()
{
reset();
}
T*& outPtr()
{
reset();
return m_ptr;
}
GUniquePtr<T> release()
{
GUniquePtr<T> ptr(m_ptr);
m_ptr = nullptr;
return ptr;
}
T& operator*() const
{
ASSERT(m_ptr);
return *m_ptr;
}
T* operator->() const
{
ASSERT(m_ptr);
return m_ptr;
}
T* get() const { return m_ptr; }
bool operator!() const { return !m_ptr; }
typedef T* GUniqueOutPtr::*UnspecifiedBoolType;
operator UnspecifiedBoolType() const { return m_ptr ? &GUniqueOutPtr::m_ptr : 0; }
private:
void reset()
{
if (m_ptr) {
GUniquePtr<T> deletePtr(m_ptr);
m_ptr = nullptr;
}
}
T* m_ptr;
};
}
using WTF::GUniquePtr;
using WTF::GUniqueOutPtr;
#endif // USE(GLIB)
#endif // GUniquePtr_h