头文件
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import "NSString+Utils.h" @interface iGson : NSObject // 获取所有的property
- (NSMutableArray *)getPropertyNames; // 获取成员属性及属性的类型等信息的列表
- (NSMutableArray *)getPropertyAttrs; // 获取非ReadOnly的所有property
- (NSMutableArray *)getNotReadOnlyPropertyNames; // 获取一个该类的实例需要多少字节的内存开销
+ (size_t)getInstanceMemoryCost; // 使用JSONKit做JSON解析
// 用于JSON解析的辅助方法，方便对象赋值
+ (id)objFromDict:(NSDictionary *)dict;
+ (id)objFromJson:(NSString *)json; // 转换成json字符串
- (NSString *)objToJson;
- (NSDictionary *)ojbToDict; // 用于各个子类测试json解析
- (void)testJsonParse; @end
实现文件
#import "iGson.h"
#import "JSONKit.h" @interface NSString (Utils)
- (BOOL)hasSubString:(NSString *)string;
@end @implementation NSString (Utils)
- (BOOL)hasSubString:(NSString *)string
{
NSRange range = [self rangeOfString:string];
if(range.location == NSNotFound)
return FALSE;
return TRUE;
}
@end @interface iGson ()
+ (BOOL)isPropertyReadOnly:(objc_property_t)property;
@end @implementation iGson + (BOOL)isPropertyReadOnly:(objc_property_t)property
{
NSString *propertyAttrString = [NSString stringWithCString:property_getAttributes(property)
encoding:NSUTF8StringEncoding]; if([propertyAttrString hasSubString: @",R,"]){
return YES;
} return FALSE;
} - (NSMutableArray *)getPropertyAttrs
{
Class cls = [self class];
NSMutableArray *propertyAttrsList = [[NSMutableArray alloc] init]; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];{ unsigned int outCount = 0, i = 0;
objc_property_t *properties = class_copyPropertyList(cls, &outCount); for( i = 0; i < outCount; i++){
objc_property_t property = properties[i];
//printf("%s\n" ,property_getAttributes(property)); NSString *propertyAttrString = [NSString stringWithCString:property_getAttributes(property)
encoding:NSUTF8StringEncoding];
//NSLog(@"propertyAttr: %@", propertyAttrString); // 字符串非空，则加入属性列表
if(!(propertyAttrString == nil ||
propertyAttrString.length == 0 ||
[propertyAttrString isEqualToString:@""]))
{
[propertyAttrsList addObject:propertyAttrString];
}
} [pool drain];
}
return [propertyAttrsList autorelease];
} - (NSMutableArray *)getPropertyNames
{
Class cls = [self class];
NSMutableArray *propertyList = [[NSMutableArray alloc] init];
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];{ unsigned int outCount = 0, i = 0;
objc_property_t *properties = class_copyPropertyList(cls, &outCount); for( i = 0; i < outCount; i++){ objc_property_t property = properties[i];
//printf("%s\n", property_getName(property)); NSString *propertyString = [NSString stringWithCString:property_getName(property)
encoding:NSUTF8StringEncoding];
//NSLog(@"property: %@", propertyString);
// 字符串非空，则加入属性列表
if(!(propertyString == nil ||
propertyString.length == 0 ||
[propertyString isEqualToString:@""]))
{
[propertyList addObject:propertyString];
}
} [pool drain];
}
return [propertyList autorelease];
} - (NSMutableArray *)getNotReadOnlyPropertyNames
{
Class cls = [self class];
NSMutableArray *propertyList = [[NSMutableArray alloc] init];
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];{ unsigned int outCount = 0, i = 0;
objc_property_t *properties = class_copyPropertyList(cls, &outCount); for( i = 0; i < outCount; i++){ objc_property_t property = properties[i];
//printf("%s\n", property_getName(property)); if([Model isPropertyReadOnly:property]) continue; NSString *propertyString = [NSString stringWithCString:property_getName(property)
encoding:NSUTF8StringEncoding];
//NSLog(@"property: %@", propertyString);
// 字符串非空，则加入属性列表
if(!(propertyString == nil ||
propertyString.length == 0 ||
[propertyString isEqualToString:@""]))
{
[propertyList addObject:propertyString];
}
} [pool drain];
}
return [propertyList autorelease]; } + (size_t)getInstanceMemoryCost
{
return class_getInstanceSize([self class]);
} + (id)objFromDict:(NSDictionary *)dict
{
id obj = [[[self class] alloc] init]; NSMutableArray *properties = [obj getNotReadOnlyPropertyNames];
for(NSString *property in properties){
id objValue = [dict objectForKey:property];
if([objValue isKindOfClass:[NSDictionary class]]){
objValue = [[self class] objFromDict:objValue];
}else if ([objValue isKindOfClass:[NSArray class]]){
for(id itemObj in ((NSArray *)objValue)){
itemObj = [[self class] objFromDict:itemObj]; // 这句是否合理，需要测试下
}
}
//判断非空再赋值
if(objValue && (![objValue isKindOfClass:[NSNull class]])){
[obj setValue:objValue forKey:property];
} } #if __has_feature(objc_arc)
return obj;
#else
return [obj autorelease];
#endif } + (id)objFromJson:(NSString *)json
{
id dict = [json objectFromJSONString];
return [[self class] objFromDict:dict];
} - (NSDictionary *)objToDict
{
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
NSMutableArray *properties = [self getNotReadOnlyPropertyNames];
for(NSString *property in properties){
id obj = [self valueForKey:property];
[dict setValue:obj forKey:property];
} return dict;
} - (NSString *)objToJson
{
NSString *json = nil;
json = [[self objToDict] JSONString];
return json;
} - (NSString *)description
{
NSMutableString *s = [NSMutableString stringWithCapacity:0]; [s appendFormat:@"\nClass: %@{\n", NSStringFromClass([self class])];
NSArray *arr = [self getNotReadOnlyPropertyNames];
for(id o in arr){
[s appendFormat:@"%@: %@\n", o, [self valueForKey:o]];
}
[s appendFormat:@"}\n"];
return s;
} - (void)setNilValueForKey:(NSString *)key
{
// 暂时不做处理
} - (void)testJsonParse
{
// 子类重载实现
} @end