85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
#pragma once
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#include <string>
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#include "type.h"
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namespace refl {
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class UClass;
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class FieldPtr;
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class ObjectView {
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public:
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const char* ptr;
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const UClass* cls;
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const FieldPtr* cache{nullptr};
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ObjectView(const void* ptr, const UClass* cls) : ptr((const char*)ptr), cls(cls){}
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public:
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template<typename T>
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bool Get(const Name& name, T& t);
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template<typename T>
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bool Set(const Name& name, const T& t);
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template<typename ...Args>
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bool Invoke(const Name& name, Args&&... args);
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template<typename R, typename ...Args>
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R Invoke(const Name& name, Args&&... args);
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ObjectView Parent();
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};
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//生命周期短，适用于传参，不建议保存数据
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//只能指向指针，引用=>指针，指针=>指针，T => T*,T的类型丢失
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struct ArgsView {
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public:
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const void* val;
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const UClass* cls;
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ArgsView(const void* val = nullptr, const UClass* cls = nullptr) : val(val), cls(cls) {}
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//右值=>右值压入栈，caller入栈地址
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//左值=>caller变量地址
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template<typename T>
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ArgsView(T&& v): val(&v), cls(&TypeInfo<args_type_t<T>*>::StaticClass){
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if constexpr (std::is_same_v<args_type_t<T>, ArgsView>) {
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val = v.val;
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cls = v.cls;
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}
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}
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template<typename T>//参数 T* => T*
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constexpr inline T cast_to() {
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if constexpr (std::is_pointer_v<T>) {
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return (T)val;
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}
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else if constexpr (std::is_reference_v<T>){
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using RT = std::remove_reference_t<T>;
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return *(RT*)val;
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}else{
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return *(T*)val;
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}
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}
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template<typename T>
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T cast_ret() {
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if constexpr (std::is_pointer_v<T>) {
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return *(T*)val;
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}
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else if constexpr (std::is_reference_v<T>) {
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using RT = std::remove_reference_t<T>;
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return **(RT**)val;
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}
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else {
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return *(T*)val;
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}
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}
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bool ConvertTo(const UClass* toClass);
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};
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//存入的是真实的数据类型,type用于拷贝数据
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struct ArgsValue : public ArgsView {
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const UClass* type;
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template<typename T>
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ArgsValue(T&& t) : ArgsView(t), type(&TypeInfo<args_type_t<T>>::StaticClass){}
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};
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struct ArgsValueList{
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void* data{ nullptr };
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ArgsView* ptr{nullptr};
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int num{ 0 };
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ArgsValueList(const std::vector<ArgsValue>& args);
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~ArgsValueList();
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};
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} |