116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
#pragma once
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#include "field.h"
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#include "view.h"
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#include "meta.h"
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#include "convert.h"
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namespace refl {
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enum ClassFlag :uint32_t {
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CLASS_NONE_FLAG = 0,
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CLASS_TRIVIAL_FLAG = 1 << 0,
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CLASS_POINTER_FLAG = 1 << 1,
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CLASS_ARRAY_FLAG = 1 << 2,
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CLASS_CONTAINER_FLAG = 1 << 3,
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CLASS_SEQUENCE_FLAG = 1 << 4,
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CLASS_MAP_FLAG = 1 << 5,
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};
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using enum ClassFlag;
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enum EFieldFind :uint32_t {
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FIND_ALL_FIELD = 0,
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FIND_ALL_MEMBER,
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FIND_ALL_METHOD,
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FIND_FIELD,
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FIND_CTOR,
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FIND_MEMBER,
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FIND_METHOD,
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FIND_METHODS,//函数重载 特别是构造函数
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};
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struct vtable_uclass
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{
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//class
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const sarray<const FieldPtr> (*GetFields)(const UClass*, EFieldFind find, const Name& name);
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//function
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sarray<const UClass*>(*GetParams)(const UClass*);
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//function
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void (*Call)(const FieldPtr*, const sarray<Any>& ArgsList);
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//meta
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const UClass* (*GetMeta)(const Name&);
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//object
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bool (*Construct)(void* ptr,const UClass* cls, const sarray<Any>& ArgsList);
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void (*Destruct)(void*);
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};
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class UClass{
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public:
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Name name;
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uint32_t size;
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uint32_t flag{0};
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const UClass* parent;
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vtable_uclass vtable{};
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inline static std::unordered_map<Name, const UClass*> MetaTable;
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public:
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constexpr UClass(std::string_view name, uint32_t size, const UClass* parent = nullptr)
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:name(name), size(size), parent(parent){}
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AnyView New(void* ptr = nullptr, const sarray<Any>& ArgsList = {}) const {
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if (ptr == nullptr) {
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ptr = malloc(size);
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Construct(ptr, ArgsList);
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}
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return { ptr , this };
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}
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template<typename T>
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T* New(T* ptr = nullptr, const sarray<Any>& ArgsList = {}) const{
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if (!IsChildOf<T>(true)) {
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return nullptr;
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}
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if (ptr == nullptr) {
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ptr = (T*)malloc(size);
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}
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Construct(ptr, ArgsList);
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return ptr;
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}
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bool IsChildOf(const UClass* cls, bool bthis = false) const {
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const UClass* _parent = bthis ? this : parent;
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while (_parent != nullptr) {
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if (_parent == cls) {
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return true;
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}
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_parent = _parent->parent;
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}
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return false;
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}
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template<typename T>
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bool IsChildOf(bool bthis = false) const {
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return IsChildOf(&TypeInfo<T>::StaticClass, bthis);
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}
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public:
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const sarray<const FieldPtr> GetFields(EFieldFind find, const Name& name)const {
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if (vtable.GetFields) {
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return vtable.GetFields(this, find, name);
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}
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return {};
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}
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bool Construct(void* ptr, const sarray<Any>& ArgsList = {})const;
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void Destruct(void* ptr)const {
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if (vtable.Destruct) {
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vtable.Destruct(ptr);
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}
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}
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public:
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template<typename T>
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static bool Construct(void* ptr, const UClass* cls, const sarray<Any>& ArgsList = {}) {
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int argsSize = ArgsList.size();
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if (argsSize == 0) {
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if constexpr (std::is_trivially_constructible_v<T>) {
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std::construct_at((T*)ptr);
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return true;
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}
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return false;
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}
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if (argsSize == 1 && ArgsList[0]->Check(cls)) {
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*(T*)ptr = *(const T*)ArgsList[0]->ptr;
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return true;
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}
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return false;
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}
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};
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} |