利用運行時 進行模型的歸解檔

#ifndef define_h
#define define_h

#import <objc/runtime.h>

#define DECLEAR_NSCodingMethods() \
\
- (id)initWithCoder:(NSCoder *)coder\
{\
    Class cls = [self class];\
    while (cls != [NSObject class]) {\
        /*判斷是自身類還是父類*/\
        BOOL bIsSelfClass = (cls == [self class]);\
        unsigned int iVarCount = 0;\
        unsigned int propVarCount = 0;\
        unsigned int sharedVarCount = 0;\
        Ivar *ivarList = bIsSelfClass ? class_copyIvarList([cls class], &iVarCount) : NULL;/*變量列表,含屬性以及私有變量*/\
        objc_property_t *propList = bIsSelfClass ? NULL : class_copyPropertyList(cls, &propVarCount);/*屬性列表*/\
        sharedVarCount = bIsSelfClass ? iVarCount : propVarCount;\
        \
        for (int i = 0; i < sharedVarCount; i++) {\
            const char *varName = bIsSelfClass ? ivar_getName(*(ivarList + i)) : property_getName(*(propList + i));\
            NSString *key = [NSString stringWithUTF8String:varName];\
            id varValue = [coder decodeObjectForKey:key];\
            NSArray *filters = @[@"superclass", @"description", @"debugDescription", @"hash"];\
            if (varValue && [filters containsObject:key] == NO) {\
                [self setValue:varValue forKey:key];\
            }\
        }\
        free(ivarList);\
        free(propList);\
        cls = class_getSuperclass(cls);\
    }\
    return self;\
}\
\
- (void)encodeWithCoder:(NSCoder *)coder\
{\
    Class cls = [self class];\
    while (cls != [NSObject class]) {\
        /*判斷是自身類還是父類*/\
        BOOL bIsSelfClass = (cls == [self class]);\
        unsigned int iVarCount = 0;\
        unsigned int propVarCount = 0;\
        unsigned int sharedVarCount = 0;\
        Ivar *ivarList = bIsSelfClass ? class_copyIvarList([cls class], &iVarCount) : NULL;/*變量列表,含屬性以及私有變量*/\
        objc_property_t *propList = bIsSelfClass ? NULL : class_copyPropertyList(cls, &propVarCount);/*屬性列表*/\
        sharedVarCount = bIsSelfClass ? iVarCount : propVarCount;\
        \
        for (int i = 0; i < sharedVarCount; i++) {\
            const char *varName = bIsSelfClass ? ivar_getName(*(ivarList + i)) : property_getName(*(propList + i));\
            NSString *key = [NSString stringWithUTF8String:varName];\
            /*valueForKey只能獲取本類所有變量以及所有層級父類的屬性,不包含任何父類的私有變量(會崩潰)*/\
            id varValue = [self valueForKey:key];\
            NSArray *filters = @[@"superclass", @"description", @"debugDescription", @"hash"];\
            if (varValue && [filters containsObject:key] == NO) {\
                [coder encodeObject:varValue forKey:key];\
            }\
        }\
        free(ivarList);\
        free(propList);\
        cls = class_getSuperclass(cls);\
    }\
}

#endif /* define_h */
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