IMetaInfoAccessorDetails.h

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#pragma once
 
#include <nn/result.h>
#include <nn/sl/sl_cpp.h>
#include <wut.h>
 
#ifdef __cplusplus
 
namespace nn::sl {
    class TitleListCache;
    namespace details {
        class IMetaInfoAccessorBase;
        struct IMetaInfoAccessorInternal;
 
        typedef nn::Result (*IMetaInfoAccessor_GetFn)(IMetaInfoAccessorInternal *, nn::sl::TitleMetaInfo *, const nn::sl::TitleInfo &);
 
        struct WUT_PACKED IMetaInfoAccessorInternalVTable {
            IMetaInfoAccessorBase *instance; // normally this is padding
            uint32_t info;
            WUT_PADDING_BYTES(4);
            uint32_t destructor;
            WUT_PADDING_BYTES(4);
            IMetaInfoAccessor_GetFn GetFn;
        };
        WUT_CHECK_SIZE(IMetaInfoAccessorInternalVTable, 0x18);
        WUT_CHECK_OFFSET(IMetaInfoAccessorInternalVTable, 0x00, instance);
        WUT_CHECK_OFFSET(IMetaInfoAccessorInternalVTable, 0x14, GetFn);
 
        typedef struct WUT_PACKED IMetaInfoAccessorInternal {
            IMetaInfoAccessorInternalVTable *vtable;
        } IMetaInfoAccessorInternal;
        WUT_CHECK_SIZE(IMetaInfoAccessorInternal, 0x04);
        WUT_CHECK_OFFSET(IMetaInfoAccessorInternal, 0x00, vtable);
 
        class IMetaInfoAccessorBase {
            friend class nn::sl::TitleListCache;
 
        public:
            IMetaInfoAccessorBase()          = default;
            virtual ~IMetaInfoAccessorBase() = default;
 
            virtual nn::Result Get(nn::sl::TitleMetaInfo *outMetaInfo, const nn::sl::TitleInfo &titleInfo) const = 0;
 
        private:
            virtual details::IMetaInfoAccessorInternal *GetInternal() = 0;
        };
 
        class MetaInfoAccessorFromPtr : public IMetaInfoAccessorBase {
        public:
            explicit MetaInfoAccessorFromPtr(details::IMetaInfoAccessorInternal *ptr) : mInstancePtr(ptr) {
            }
            nn::Result Get(nn::sl::TitleMetaInfo *outMetaInfo, const nn::sl::TitleInfo &titleInfo) const override {
                if (!mInstancePtr) {
                    return {Result::LEVEL_FATAL, Result::RESULT_MODULE_NN_SL, 1};
                }
                return mInstancePtr->vtable->GetFn(mInstancePtr, outMetaInfo, titleInfo);
            }
 
        private:
            nn::sl::details::IMetaInfoAccessorInternal *GetInternal() override {
                return mInstancePtr;
            }
 
            details::IMetaInfoAccessorInternal *mInstancePtr;
        };
    } // namespace details
 
} // namespace nn::sl
 
#endif