276 lines
10 KiB
Mathematica
276 lines
10 KiB
Mathematica
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// MAJsonUtils.m
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// amap_map
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//
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// Created by shaobin on 2019/2/13.
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// Copyright © 2019 Amap.com. All rights reserved.
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//
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#import "AMapJsonUtils.h"
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#import <objc/runtime.h>
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#import <objc/message.h>
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#import <CoreLocation/CoreLocation.h>
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#import "AMapConvertUtil.h"
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@implementation AMapJsonUtils
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+ (BOOL)isValidJsonValue:(id)value {
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if([value isKindOfClass:NSString.class] ||
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[value isKindOfClass:NSNumber.class] ||
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value == [NSNull null]) {
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return YES;
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}
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return NO;
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}
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+ (id)jsonValueFromObject:(id)obj {
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if([self isValidJsonValue:obj]) {
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return obj;
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}
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if(!obj) {
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return [NSNull null];
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}
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//常用基本类型判断，not exhausted
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if([obj isKindOfClass:NSDate.class] ||
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[obj isKindOfClass:NSData.class] ||
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[obj isKindOfClass:NSValue.class]) {
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NSString *retStr = [NSString stringWithFormat:@"%@", obj];
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return retStr;
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}
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if([obj isKindOfClass:NSArray.class]) {
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NSArray *oldArray = (NSArray*)obj;
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NSMutableArray *retArray = [NSMutableArray arrayWithCapacity:[oldArray count]];
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for(id item in oldArray) {
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id jsonValue = [self jsonValueFromObject:item];
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[retArray addObject:jsonValue];
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}
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return retArray;
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}
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if([obj isKindOfClass:NSDictionary.class]) {
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NSDictionary *oldDict = (NSDictionary *)obj;
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NSMutableDictionary *retDict = [NSMutableDictionary dictionaryWithCapacity:[oldDict count]];
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for(id key in [oldDict allKeys]) {
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id item = [oldDict objectForKey:key];
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id jsonValue = [self jsonValueFromObject:item];
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if(jsonValue) {
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[retDict setObject:jsonValue forKey:key];
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}
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}
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return retDict;
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}
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NSArray *propertyArray = [self allPropertiesOfClass:[obj class]];
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NSMutableDictionary *returnDict = [NSMutableDictionary dictionaryWithCapacity:propertyArray.count];
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for(NSString *property in propertyArray) {
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id value = [obj valueForKey:property];
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if(value) {
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id jsonValue = [self jsonValueFromObject:value];
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NSString *mappedName = property;
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if(jsonValue) {
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[returnDict setObject:jsonValue forKey:mappedName];
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}
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}
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}
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return returnDict;
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}
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+ (id)jsonObjectFromModel:(id)model {
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id ret = [self jsonValueFromObject:model];
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if(![NSJSONSerialization isValidJSONObject:ret]) {
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return nil;
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}
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return ret;
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}
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+ (id)modelFromDict:(NSDictionary*)dict modelClass:(Class)modelClass {
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if(![dict isKindOfClass:[NSDictionary class]]) {
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NSLog(@"[AMap] the object must be of %@", [NSDictionary class]);
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return nil;
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}
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if([modelClass isSubclassOfClass:[NSDictionary class]]) {
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return [dict copy];
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}
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//获取clazz属性列表
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NSArray *propertyArray = [self allPropertiesOfClass:modelClass];
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NSMutableArray* missedProperties = [NSMutableArray array];
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id ret = [[modelClass alloc] init];
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//枚举clazz中的每个属性，然后赋值
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for (NSString *propertyName in propertyArray) {
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NSString *keyName = propertyName;
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id value = [dict objectForKey:keyName];
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//'id'是关键字，服务端返回'id'字段属性名更改为'id_'
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if(!value && [propertyName isEqualToString:@"id_"]) {
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value = [dict objectForKey:@"id"];
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}
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if(!value) {
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[missedProperties addObject:propertyName];
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continue;
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}
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if(value == [NSNull null]) {
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continue;
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}
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Class propertyClass = nil;
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objc_property_t property = class_getProperty(modelClass, [propertyName UTF8String]);
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NSString *propertyAttributes = [NSString stringWithCString:property_getAttributes(property) encoding:NSUTF8StringEncoding];
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NSArray *splitPropertyAttributes = [propertyAttributes componentsSeparatedByString:@","];
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if(splitPropertyAttributes.count > 0) {
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NSString *encodeType = splitPropertyAttributes[0];
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if([encodeType hasPrefix:@"T@"]) {
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NSArray *splitEncodeType = [encodeType componentsSeparatedByString:@"\""];
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NSString *className = nil;
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if(splitEncodeType.count > 1) {
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className = splitEncodeType[1];
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}
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if(className) {
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propertyClass = NSClassFromString(className);
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}
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} else if ([encodeType isEqualToString:@"T{CLLocationCoordinate2D=dd}"]) {//经纬度
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//解析经纬度
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CLLocationCoordinate2D coordinate = [self coordinateFromModel:value];
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//使用msgSend直接设置经纬度的属性
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SEL sel = NSSelectorFromString([NSString stringWithFormat:@"set%@:",[propertyName capitalizedString]]);
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((void (*)(id,SEL,CLLocationCoordinate2D))objc_msgSend)(ret,sel,coordinate);
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continue;
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} else if ([encodeType isEqualToString:@"T{CGPoint=dd}"]) {//CGPoint点
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CGPoint point = [AMapConvertUtil pointFromArray:value];
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//使用msgSend直接设置经纬度的属性
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SEL sel = NSSelectorFromString([NSString stringWithFormat:@"set%@:",[propertyName capitalizedString]]);
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((void (*)(id,SEL,CGPoint))objc_msgSend)(ret,sel,point);
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continue;
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}
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}
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//获取property类型后，再处理
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if(propertyClass) {
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if([value isKindOfClass:propertyClass]) {
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//array 需要特殊处理
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if([propertyClass isSubclassOfClass:NSArray.class]) {
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NSString *elementClassSel = [NSString stringWithFormat:@"%@ElementClass", propertyName];
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SEL selector = NSSelectorFromString(elementClassSel);
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if([[ret class] respondsToSelector:selector]) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
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Class elementCls = [[ret class] performSelector:selector];
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#pragma clang diagnostic pop
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NSArray *arr = (NSArray *)value;
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NSMutableArray *mutArr = [NSMutableArray arrayWithCapacity:arr.count];
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for(id item in arr) {
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id newItem = [self modelFromDict:item modelClass:elementCls];
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if(newItem) {
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[mutArr addObject:newItem];
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} else {
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[mutArr addObject:item];
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}
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}
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[ret setValue:mutArr forKey:propertyName];
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} else {
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[ret setValue:value forKey:propertyName];
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}
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} else {
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[ret setValue:value forKey:propertyName];
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}
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} else if([value isKindOfClass:NSDictionary.class]){
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NSDictionary *tempDic = value;
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id model = [self modelFromDict:tempDic modelClass:propertyClass];
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[ret setValue:model forKey:propertyName];
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} else if ([value isKindOfClass:[NSNumber class]] && [NSStringFromClass(propertyClass) isEqualToString:@"UIColor"]) {
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UIColor *color = [AMapConvertUtil colorFromNumber:value];
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[ret setValue:color forKey:propertyName];
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} else {
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[ret setValue:value forKey:propertyName];
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#ifdef DEBUG
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Class valueClaz = [value class];
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NSLog(@"\U0001F913\U0001F913 Warning1: property '%@' of %@ is %@, %@ is received", propertyName, modelClass, propertyClass, valueClaz);
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#endif
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}
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} else { //end of if(propertyClaz) 如@"Ti" @"Tf"
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if([self isValidJsonValue:value]){
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[ret setValue:value forKey:propertyName];
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} else {
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#ifdef DEBUG
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Class valueClaz = [value class];
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NSLog(@"\U0001F913\U0001F913 Warning1: property '%@' of %@ is %@, %@ is received", propertyName, modelClass, propertyClass, valueClaz);
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#endif
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}
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}
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}
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#ifdef DEBUG
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if([missedProperties count] > 0) {
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NSLog(@"\U0001F913\U0001F913 Warning2: %@ value missed: %@", modelClass, missedProperties);
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}
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#endif
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NSString *postHookSel = [NSString stringWithFormat:@"postHookWith:"];
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SEL sel = NSSelectorFromString(postHookSel);
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if([ret respondsToSelector:sel]) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
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[ret performSelector:sel withObject:dict];
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#pragma clang diagnostic pop
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}
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return ret;
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}
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//返回array of propertyNames
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+ (NSArray<NSString*> *)allPropertiesOfClass:(Class)cls {
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Class clazz = cls;
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NSMutableArray *mutArr = [[NSMutableArray alloc] init];
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while(clazz != [NSObject class]) {
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unsigned int count = 0;
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objc_property_t* properties = class_copyPropertyList(clazz, &count);
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for (int i = 0; i < count ; i++) {
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objc_property_t prop = properties[i];
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NSString *propertyName = [NSString stringWithCString:property_getName(prop) encoding:NSUTF8StringEncoding];
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[mutArr addObject:propertyName];
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}
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if(properties) {
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free(properties);
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}
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clazz = class_getSuperclass(clazz);
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}
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return mutArr;
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}
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//从数据model中解析经纬度
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+ (CLLocationCoordinate2D)coordinateFromModel:(id)model {
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CLLocationCoordinate2D location = kCLLocationCoordinate2DInvalid;
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if ([model isKindOfClass:[NSArray class]]) {
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return [AMapConvertUtil coordinateFromArray:model];
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} else if ([model isKindOfClass:[NSString class]]) {//后台经纬度字符串习惯是（经度，维度）的格式
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NSString *coordStr = model;
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NSArray *array = [coordStr componentsSeparatedByString:@","];
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array = [[array reverseObjectEnumerator] allObjects];//这里需要逆置
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return [AMapConvertUtil coordinateFromArray:array];
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} else if ([model isKindOfClass:[NSDictionary class]]) {
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NSDictionary *dict = model;
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NSNumber *latitudeNum = [dict objectForKey:@"latitude"];
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NSNumber *longitudeNum = [dict objectForKey:@"longitude"];
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if (latitudeNum && longitudeNum) {
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location = CLLocationCoordinate2DMake([latitudeNum doubleValue], [longitudeNum doubleValue]);
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} else {
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NSLog(@"经纬度参数异常，解析为无效经纬度");
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}
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}
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return location;
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}
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@end
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