82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
#pragma once
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#include <qhash.h>
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#include <qlist.h>
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#include <qmetaobject.h>
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#include <qmetatype.h>
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#include <qqmlintegration.h>
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#include <qstring.h>
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#include <qvariant.h>
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namespace ZShell::settings {
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class ValueCodec;
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struct Annotation {
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QVariant defaultValue;
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bool globalOnly = false;
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// NOLINTNEXTLINE(readability-redundant-member-init) callers will get missing field init warnings without
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QList<QMetaType> allowedTypes = {}; // For QVariant properties
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};
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namespace detail {
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// Return trivially copyable types (e.g. bool) by value and others (e.g. QVariant) by const ref
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template <typename T>
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using AnnotationReturn = std::conditional_t<std::is_trivially_copyable_v<T> && sizeof(T) <= sizeof(void*), T, const T&>;
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} // namespace detail
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#define ANNOTATION(Type, name) \
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Q_PROPERTY(Type name READ name) \
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\
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public: \
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[[nodiscard]] detail::AnnotationReturn<Type> name() const { \
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return annotation.name; \
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} \
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\
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private:
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struct Descriptor {
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Q_GADGET
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QML_VALUE_TYPE(descriptor)
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Q_PROPERTY(QString key MEMBER key)
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Q_PROPERTY(QString type READ typeString)
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Q_PROPERTY(int metaIndex MEMBER metaIndex)
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Q_PROPERTY(bool isNode MEMBER isNode)
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ANNOTATION(QVariant, defaultValue)
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ANNOTATION(bool, globalOnly)
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public:
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QString key;
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QMetaType type;
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int metaIndex;
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bool isNode;
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Annotation annotation;
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const ValueCodec* codec = nullptr; // Null for nodes and unsupported types
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[[nodiscard]] QString typeString() const;
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[[nodiscard]] bool accepts(const QMetaType& valueType) const;
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};
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#undef ANNOTATION
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class Schema {
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public:
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static Schema build(const QMetaObject* meta, int baseOffset, bool includeReadOnly = false);
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static void annotate(const QMetaObject* meta, const QString& key, Annotation annotation);
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[[nodiscard]] const QList<Descriptor>& descriptors() const;
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[[nodiscard]] const Descriptor* get(const QString& key) const;
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private:
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explicit Schema() = default;
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QList<Descriptor> m_descriptors;
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QHash<QString, qsizetype> m_keyToIndex;
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};
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} // namespace ZShell::settings
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