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core/util: move DropEmitter to utils and add generic accessor macros

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This commit is contained in:
outfoxxed 2024-07-30 12:19:59 -07:00
parent abc0201f6e
commit 3a8e67e8ab
Signed by: outfoxxed
GPG key ID: 4C88A185FB89301E
3 changed files with 81 additions and 44 deletions
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19
src/core/types.cpp
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@ -21,22 +21,3 @@ Qt::Edges Edges::toQt(Edges::Flags edges) { return Qt::Edges(edges.toInt()); }
bool Edges::isOpposing(Edges::Flags edges) {
return edges.testFlags(Edges::Top | Edges::Bottom) || edges.testFlags(Edges::Left | Edges::Right);
}
DropEmitter::DropEmitter(DropEmitter&& other) noexcept: object(other.object), signal(other.signal) {
other.object = nullptr;
}
DropEmitter& DropEmitter::operator=(DropEmitter&& other) noexcept {
this->object = other.object;
this->signal = other.signal;
other.object = nullptr;
return *this;
}
DropEmitter::~DropEmitter() { this->call(); }
void DropEmitter::call() {
if (!this->object) return;
this->signal(this->object);
this->object = nullptr;
}

25
src/core/types.hpp
View file

@ -69,28 +69,3 @@ bool isOpposing(Flags edges);
}; // namespace Edges
Q_DECLARE_OPERATORS_FOR_FLAGS(Edges::Flags);
// NOLINTBEGIN
#define DROP_EMIT(object, func) \
DropEmitter(object, static_cast<void (*)(typeof(object))>([](typeof(object) o) { o->func(); }))
// NOLINTEND
class DropEmitter {
public:
template <class O>
DropEmitter(O* object, void (*signal)(O*))
: object(object)
, signal(*reinterpret_cast<void (*)(void*)>(signal)) {} // NOLINT
DropEmitter() = default;
DropEmitter(DropEmitter&& other) noexcept;
DropEmitter& operator=(DropEmitter&& other) noexcept;
~DropEmitter();
Q_DISABLE_COPY(DropEmitter);
void call();
private:
void* object = nullptr;
void (*signal)(void*) = nullptr;
};

81
src/core/util.hpp Normal file
View file

@ -0,0 +1,81 @@
#pragma once
// NOLINTBEGIN
#define DROP_EMIT(object, func) \
DropEmitter(object, static_cast<void (*)(typeof(object))>([](typeof(object) o) { o->func(); }))
#define DROP_EMIT_IF(cond, object, func) (cond) ? DROP_EMIT(object, func) : DropEmitter()
#define DEFINE_DROP_EMIT_IF(cond, object, func) DropEmitter func = DROP_EMIT_IF(cond, object, func)
#define DROP_EMIT_SET(object, local, member, signal) \
auto signal = DropEmitter(); \
if (local == object->member) { \
object->member = local; \
signal = DROP_EMIT(object, signal); \
}
// generic accessor declarations
#define GDECL_GETTER(type, name) [[nodiscard]] type name() const
#define GDEF_GETTER(class, type, member, name) \
type class::name() const { return this->member; }
#define GDECL_SETTER(type, name) DropEmitter name(type value)
#define GDEF_SETTER(class, type, member, name, signal) \
DropEmitter class ::name(type value) { \
if (value == this->member) return DropEmitter(); \
this->member = value; \
return DROP_EMIT(this, signal); \
}
#define GDECL_MEMBER(type, getter, setter) \
GDECL_GETTER(type, getter) \
GDECL_SETTER(type, setter)
#define GDEF_MEMBER(class, type, member, getter, setter, signal) \
GDEF_GETTER(class, type, member, getter) \
GDEF_SETTER(class, type, member, setter, signal)
#define GDEF_MEMBER_S(class, type, lower, upper) \
GDEF_MEMBER(class, type, m##upper, lower, set##upper, lower##Changed)
// NOLINTEND
class DropEmitter {
public:
Q_DISABLE_COPY(DropEmitter);
template <class O>
DropEmitter(O* object, void (*signal)(O*))
: object(object)
, signal(*reinterpret_cast<void (*)(void*)>(signal)) {} // NOLINT
DropEmitter() = default;
DropEmitter(DropEmitter&& other) noexcept: object(other.object), signal(other.signal) {
other.object = nullptr;
}
~DropEmitter() { this->call(); }
DropEmitter& operator=(DropEmitter&& other) noexcept {
this->object = other.object;
this->signal = other.signal;
other.object = nullptr;
return *this;
}
explicit operator bool() const noexcept { return this->object; }
void call() {
if (!this->object) return;
this->signal(this->object);
this->object = nullptr;
}
private:
void* object = nullptr;
void (*signal)(void*) = nullptr;
};