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util/Manual: add type aliases

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This commit is contained in:
Max Kellermann 2022-05-31 16:08:47 +02:00 committed by Max Kellermann
parent f92bae887f
commit 826d1b207e
1 changed files with 16 additions and 10 deletions
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26
src/util/Manual.hxx
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@ -54,6 +54,12 @@ class Manual {
#endif #endif
public: public:
using value_type = T;
using reference = T &;
using const_reference = const T &;
using pointer = T *;
using const_pointer = const T *;
#ifndef NDEBUG #ifndef NDEBUG
~Manual() noexcept { ~Manual() noexcept {
assert(!initialized); assert(!initialized);
@ -63,7 +69,7 @@ public:
/** /**
* Cast a value reference to the containing Manual instance. * Cast a value reference to the containing Manual instance.
*/ */
static constexpr Manual<T> &Cast(T &value) noexcept { static constexpr Manual<T> &Cast(reference value) noexcept {
return reinterpret_cast<Manual<T> &>(value); return reinterpret_cast<Manual<T> &>(value);
} }
@ -82,7 +88,7 @@ public:
void Destruct() noexcept { void Destruct() noexcept {
assert(initialized); assert(initialized);
T &t = Get(); reference t = Get();
t.T::~T(); t.T::~T();
#ifndef NDEBUG #ifndef NDEBUG
@ -90,33 +96,33 @@ public:
#endif #endif
} }
T &Get() noexcept { reference Get() noexcept {
assert(initialized); assert(initialized);
void *p = static_cast<void *>(data); void *p = static_cast<void *>(data);
return *static_cast<T *>(p); return *static_cast<pointer>(p);
} }
const T &Get() const noexcept { const_reference Get() const noexcept {
assert(initialized); assert(initialized);
const void *p = static_cast<const void *>(data); const void *p = static_cast<const void *>(data);
return *static_cast<const T *>(p); return *static_cast<const_pointer>(p);
} }
operator T &() noexcept { operator reference() noexcept {
return Get(); return Get();
} }
operator const T &() const noexcept { operator const_reference() const noexcept {
return Get(); return Get();
} }
T *operator->() noexcept { pointer operator->() noexcept {
return &Get(); return &Get();
} }
const T *operator->() const noexcept { const_pointer operator->() const noexcept {
return &Get(); return &Get();
} }
}; };