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The MIT License (MIT)
Copyright (c) 2015 ibireme <ibireme@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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YYModel
==============
[![License MIT](https://img.shields.io/badge/license-MIT-green.svg?style=flat)](https://raw.githubusercontent.com/ibireme/YYModel/master/LICENSE)&nbsp;
[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)&nbsp;
[![CocoaPods](http://img.shields.io/cocoapods/v/YYModel.svg?style=flat)](http://cocoapods.org/?q= YYModel)&nbsp;
[![CocoaPods](http://img.shields.io/cocoapods/p/YYModel.svg?style=flat)](http://cocoapods.org/?q= YYModel)&nbsp;
[![Build Status](https://travis-ci.org/ibireme/YYModel.svg?branch=master)](https://travis-ci.org/ibireme/YYModel)&nbsp;
[![codecov.io](https://codecov.io/github/ibireme/YYModel/coverage.svg?branch=master)](https://codecov.io/github/ibireme/YYModel?branch=master)
High performance model framework for iOS/OSX.<br/>
(It's a component of [YYKit](https://github.com/ibireme/YYKit))
Performance
==============
Time cost (process GithubUser 10000 times on iPhone 6):
![Benchmark result](https://raw.github.com/ibireme/YYModel/master/Benchmark/Result.png
)
See `Benchmark/ModelBenchmark.xcodeproj` for more benchmark case.
Features
==============
- **High performance**: The conversion performance is close to handwriting code.
- **Automatic type conversion**: The object types can be automatically converted.
- **Type Safe**: All data types will be verified to ensure type-safe during the conversion process.
- **Non-intrusive**: There is no need to make the model class inherit from other base class.
- **Lightwight**: This library contains only 5 files.
- **Docs and unit testing**: 100% docs coverage, 99.6% code coverage.
Usage
==============
###Simple model json convert
// JSON:
{
"uid":123456,
"name":"Harry",
"created":"1965-07-31T00:00:00+0000"
}
// Model:
@interface User : NSObject
@property UInt64 uid;
@property NSString *name;
@property NSDate *created;
@end
@implementation User
@end
// Convert json to model:
User *user = [User yy_modelWithJSON:json];
// Convert model to json:
NSDictionary *json = [user yy_modelToJSONObject];
If the type of an object in JSON/Dictionary cannot be matched to the property of the model, the following automatic conversion is performed. If the automatic conversion failed, the value will be ignored.
<table>
<thead>
<tr>
<th>JSON/Dictionary</th>
<th>Model</th>
</tr>
</thead>
<tbody>
<tr>
<td>NSString</td>
<td>NSNumber,NSURL,SEL,Class</td>
</tr>
<tr>
<td>NSNumber</td>
<td>NSString</td>
</tr>
<tr>
<td>NSString/NSNumber</td>
<td>C number (BOOL,int,float,NSUInteger,UInt64,...)<br/>
NaN and Inf will be ignored</td>
</tr>
<tr>
<td>NSString</td>
<td>NSDate parsed with these formats:<br/>
yyyy-MM-dd<br/>
yyyy-MM-dd HH:mm:ss<br/>
yyyy-MM-dd'T'HH:mm:ss<br/>
yyyy-MM-dd'T'HH:mm:ssZ<br/>
EEE MMM dd HH:mm:ss Z yyyy
</td>
</tr>
<tr>
<td>NSDate</td>
<td>NSString formatted with ISO8601:<br/>
"YYYY-MM-dd'T'HH:mm:ssZ"</td>
</tr>
<tr>
<td>NSValue</td>
<td>struct (CGRect,CGSize,...)</td>
</tr>
<tr>
<td>NSNull</td>
<td>nil,0</td>
</tr>
<tr>
<td>"no","false",...</td>
<td>@(NO),0</td>
</tr>
<tr>
<td>"yes","true",...</td>
<td>@(YES),1</td>
</tr>
</tbody>
</table>
###Match model property to different JSON key
// JSON:
{
"n":"Harry Pottery",
"p": 256,
"ext" : {
"desc" : "A book written by J.K.Rowing."
},
"ID" : 100010
}
// Model:
@interface Book : NSObject
@property NSString *name;
@property NSInteger page;
@property NSString *desc;
@property NSString *bookID;
@end
@implementation Book
+ (NSDictionary *)modelCustomPropertyMapper {
return @{@"name" : @"n",
@"page" : @"p",
@"desc" : @"ext.desc",
@"bookID" : @[@"id",@"ID",@"book_id"]};
}
@end
You can map a json key (key path) or an array of json key (key path) to one or multiple property name. If there's no mapper for a property, it will use the property's name as default.
###Nested model
// JSON
{
"author":{
"name":"J.K.Rowling",
"birthday":"1965-07-31T00:00:00+0000"
},
"name":"Harry Potter",
"pages":256
}
// Model: (no need to do anything)
@interface Author : NSObject
@property NSString *name;
@property NSDate *birthday;
@end
@implementation Author
@end
@interface Book : NSObject
@property NSString *name;
@property NSUInteger pages;
@property Author *author;
@end
@implementation Book
@end
### Container property
@class Shadow, Border, Attachment;
@interface Attributes
@property NSString *name;
@property NSArray *shadows; //Array<Shadow>
@property NSSet *borders; //Set<Border>
@property NSMutableDictionary *attachments; //Dict<NSString,Attachment>
@end
@implementation Attributes
+ (NSDictionary *)modelContainerPropertyGenericClass {
// value should be Class or Class name.
return @{@"shadows" : [Shadow class],
@"borders" : Border.class,
@"attachments" : @"Attachment" };
}
@end
### Whitelist and blacklist
@interface User
@property NSString *name;
@property NSUInteger age;
@end
@implementation Attributes
+ (NSArray *)modelPropertyBlacklist {
return @[@"test1", @"test2"];
}
+ (NSArray *)modelPropertyWhitelist {
return @[@"name"];
}
@end
###Data validate and custom transform
// JSON:
{
"name":"Harry",
"timestamp" : 1445534567
}
// Model:
@interface User
@property NSString *name;
@property NSDate *createdAt;
@end
@implementation User
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {
NSNumber *timestamp = dic[@"timestamp"];
if (![timestamp isKindOfClass:[NSNumber class]]) return NO;
_createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];
return YES;
}
- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {
if (!_createdAt) return NO;
dic[@"timestamp"] = @(n.timeIntervalSince1970);
return YES;
}
@end
###Coding/Copying/hash/equal/description
@interface YYShadow :NSObject <NSCoding, NSCopying>
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) CGSize size;
@end
@implementation YYShadow
- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }
- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }
- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }
- (NSUInteger)hash { return [self yy_modelHash]; }
- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }
- (NSString *)description { return [self yy_modelDescription]; }
@end
Installation
==============
### CocoaPods
1. Add `pod 'YYModel'` to your Podfile.
2. Run `pod install` or `pod update`.
3. Import \<YYModel/YYModel.h\>.
### Carthage
1. Add `github "ibireme/YYModel"` to your Cartfile.
2. Run `carthage update --platform ios` and add the framework to your project.
3. Import \<YYModel/YYModel.h\>.
### Manually
1. Download all the files in the YYModel subdirectory.
2. Add the source files to your Xcode project.
3. Import `YYModel.h`.
Documentation
==============
Full API documentation is available on [CocoaDocs](http://cocoadocs.org/docsets/YYModel/).<br/>
You can also install documentation locally using [appledoc](https://github.com/tomaz/appledoc).
Requirements
==============
This library requires `iOS 6.0+` and `Xcode 7.0+`.
License
==============
YYModel is provided under the MIT license. See LICENSE file for details.
<br/><br/>
---
中文介绍
==============
高性能 iOS/OSX 模型转换框架。<br/>
(该项目是 [YYKit](https://github.com/ibireme/YYKit) 组件之一)
性能
==============
处理 GithubUser 数据 10000 次耗时统计 (iPhone 6):
![Benchmark result](https://raw.github.com/ibireme/YYModel/master/Benchmark/Result.png
)
更多测试代码和用例见 `Benchmark/ModelBenchmark.xcodeproj`。
特性
==============
- **高性能**: 模型转换性能接近手写解析代码。
- **自动类型转换**: 对象类型可以自动转换，详情见下方表格。
- **类型安全**: 转换过程中，所有的数据类型都会被检测一遍，以保证类型安全，避免崩溃问题。
- **无侵入性**: 模型无需继承自其他基类。
- **轻量**: 该框架只有 5 个文件 (包括.h文件)。
- **文档和单元测试**: 文档覆盖率100%, 代码覆盖率99.6%。
使用方法
==============
###简单的 Model 与 JSON 相互转换
// JSON:
{
"uid":123456,
"name":"Harry",
"created":"1965-07-31T00:00:00+0000"
}
// Model:
@interface User : NSObject
@property UInt64 uid;
@property NSString *name;
@property NSDate *created;
@end
@implementation User
@end
// 将 JSON (NSData,NSString,NSDictionary) 转换为 Model:
User *user = [User yy_modelWithJSON:json];
// 将 Model 转换为 JSON 对象:
NSDictionary *json = [user yy_modelToJSONObject];
当 JSON/Dictionary 中的对象类型与 Model 属性不一致时，YYModel 将会进行如下自动转换。自动转换不支持的值将会被忽略，以避免各种潜在的崩溃问题。
<table>
<thead>
<tr>
<th>JSON/Dictionary</th>
<th>Model</th>
</tr>
</thead>
<tbody>
<tr>
<td>NSString</td>
<td>NSNumber,NSURL,SEL,Class</td>
</tr>
<tr>
<td>NSNumber</td>
<td>NSString</td>
</tr>
<tr>
<td>NSString/NSNumber</td>
<td>基础类型 (BOOL,int,float,NSUInteger,UInt64,...)<br/>
NaN 和 Inf 会被忽略</td>
</tr>
<tr>
<td>NSString</td>
<td>NSDate 以下列格式解析:<br/>
yyyy-MM-dd<br/>
yyyy-MM-dd HH:mm:ss<br/>
yyyy-MM-dd'T'HH:mm:ss<br/>
yyyy-MM-dd'T'HH:mm:ssZ<br/>
EEE MMM dd HH:mm:ss Z yyyy
</td>
</tr>
<tr>
<td>NSDate</td>
<td>NSString 格式化为 ISO8601:<br/>
"YYYY-MM-dd'T'HH:mm:ssZ"</td>
</tr>
<tr>
<td>NSValue</td>
<td>struct (CGRect,CGSize,...)</td>
</tr>
<tr>
<td>NSNull</td>
<td>nil,0</td>
</tr>
<tr>
<td>"no","false",...</td>
<td>@(NO),0</td>
</tr>
<tr>
<td>"yes","true",...</td>
<td>@(YES),1</td>
</tr>
</tbody>
</table>
###Model 属性名和 JSON 中的 Key 不相同
// JSON:
{
"n":"Harry Pottery",
"p": 256,
"ext" : {
"desc" : "A book written by J.K.Rowing."
},
"ID" : 100010
}
// Model:
@interface Book : NSObject
@property NSString *name;
@property NSInteger page;
@property NSString *desc;
@property NSString *bookID;
@end
@implementation Book
//返回一个 Dict，将 Model 属性名对映射到 JSON 的 Key。
+ (NSDictionary *)modelCustomPropertyMapper {
return @{@"name" : @"n",
@"page" : @"p",
@"desc" : @"ext.desc",
@"bookID" : @[@"id",@"ID",@"book_id"]};
}
@end
你可以把一个或一组 json key (key path) 映射到一个或多个属性。如果一个属性没有映射关系，那默认会使用相同属性名作为映射。
在 json->model 的过程中：如果一个属性对应了多个 json key，那么转换过程会按顺序查找，并使用第一个不为空的值。
在 model->json 的过程中：如果一个属性对应了多个 json key (key path)，那么转换过程仅会处理第一个 json key (key path)；如果多个属性对应了同一个 json key，则转换过过程会使用其中任意一个不为空的值。
###Model 包含其他 Model
// JSON
{
"author":{
"name":"J.K.Rowling",
"birthday":"1965-07-31T00:00:00+0000"
},
"name":"Harry Potter",
"pages":256
}
// Model: 什么都不用做，转换会自动完成
@interface Author : NSObject
@property NSString *name;
@property NSDate *birthday;
@end
@implementation Author
@end
@interface Book : NSObject
@property NSString *name;
@property NSUInteger pages;
@property Author *author; //Book 包含 Author 属性
@end
@implementation Book
@end
###容器类属性
@class Shadow, Border, Attachment;
@interface Attributes
@property NSString *name;
@property NSArray *shadows; //Array<Shadow>
@property NSSet *borders; //Set<Border>
@property NSMutableDictionary *attachments; //Dict<NSString,Attachment>
@end
@implementation Attributes
// 返回容器类中的所需要存放的数据类型 (以 Class 或 Class Name 的形式)。
+ (NSDictionary *)modelContainerPropertyGenericClass {
return @{@"shadows" : [Shadow class],
@"borders" : Border.class,
@"attachments" : @"Attachment" };
}
@end
###黑名单与白名单
@interface User
@property NSString *name;
@property NSUInteger age;
@end
@implementation Attributes
// 如果实现了该方法，则处理过程中会忽略该列表内的所有属性
+ (NSArray *)modelPropertyBlacklist {
return @[@"test1", @"test2"];
}
// 如果实现了该方法，则处理过程中不会处理该列表外的属性。
+ (NSArray *)modelPropertyWhitelist {
return @[@"name"];
}
@end
###数据校验与自定义转换
// JSON:
{
"name":"Harry",
"timestamp" : 1445534567
}
// Model:
@interface User
@property NSString *name;
@property NSDate *createdAt;
@end
@implementation User
// 当 JSON 转为 Model 完成后，该方法会被调用。
// 你可以在这里对数据进行校验，如果校验不通过，可以返回 NO，则该 Model 会被忽略。
// 你也可以在这里做一些自动转换不能完成的工作。
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {
NSNumber *timestamp = dic[@"timestamp"];
if (![timestamp isKindOfClass:[NSNumber class]]) return NO;
_createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];
return YES;
}
// 当 Model 转为 JSON 完成后，该方法会被调用。
// 你可以在这里对数据进行校验，如果校验不通过，可以返回 NO，则该 Model 会被忽略。
// 你也可以在这里做一些自动转换不能完成的工作。
- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {
if (!_createdAt) return NO;
dic[@"timestamp"] = @(n.timeIntervalSince1970);
return YES;
}
@end
###Coding/Copying/hash/equal/description
@interface YYShadow :NSObject <NSCoding, NSCopying>
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) CGSize size;
@end
@implementation YYShadow
// 直接添加以下代码即可自动完成
- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }
- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }
- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }
- (NSUInteger)hash { return [self yy_modelHash]; }
- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }
- (NSString *)description { return [self yy_modelDescription]; }
@end
安装
==============
### CocoaPods
1. 在 Podfile 中添加 `pod 'YYModel'`。
2. 执行 `pod install` 或 `pod update`。
3. 导入 \<YYModel/YYModel.h\>。
### Carthage
1. 在 Cartfile 中添加 `github "ibireme/YYModel"`。
2. 执行 `carthage update --platform ios` 并将生成的 framework 添加到你的工程。
3. 导入 \<YYModel/YYModel.h\>。
### 手动安装
1. 下载 YYModel 文件夹内的所有内容。
2. 将 YYModel 内的源文件添加(拖放)到你的工程。
3. 导入 `YYModel.h`。
文档
==============
你可以在 [CocoaDocs](http://cocoadocs.org/docsets/YYModel/) 查看在线 API 文档，也可以用 [appledoc](https://github.com/tomaz/appledoc) 本地生成文档。
系统要求
==============
该项目最低支持 `iOS 6.0` 和 `Xcode 7.0`。
许可证
==============
YYModel 使用 MIT 许可证，详情见 LICENSE 文件。
相关链接
==============
[iOS JSON 模型转换库评测](http://blog.ibireme.com/2015/10/23/ios_model_framework_benchmark/)

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//
// NSObject+YYModel.h
// YYModel <https://github.com/ibireme/YYModel>
//
// Created by ibireme on 15/5/10.
// Copyright (c) 2015 ibireme.
//
// This source code is licensed under the MIT-style license found in the
// LICENSE file in the root directory of this source tree.
//
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
/**
Provide some data-model method:
* Convert json to any object, or convert any object to json.
* Set object properties with a key-value dictionary (like KVC).
* Implementations of `NSCoding`, `NSCopying`, `-hash` and `-isEqual:`.
See `YYModel` protocol for custom methods.
Sample Code:
********************** json convertor *********************
@interface YYAuthor : NSObject
@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) NSDate *birthday;
@end
@implementation YYAuthor
@end
@interface YYBook : NSObject
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) NSUInteger pages;
@property (nonatomic, strong) YYAuthor *author;
@end
@implementation YYBook
@end
int main() {
// create model from json
YYBook *book = [YYBook yy_modelWithJSON:@"{\"name\": \"Harry Potter\", \"pages\": 256, \"author\": {\"name\": \"J.K.Rowling\", \"birthday\": \"1965-07-31\" }}"];
// convert model to json
NSString *json = [book yy_modelToJSONString];
// {"author":{"name":"J.K.Rowling","birthday":"1965-07-31T00:00:00+0000"},"name":"Harry Potter","pages":256}
}
********************** Coding/Copying/hash/equal *********************
@interface YYShadow :NSObject <NSCoding, NSCopying>
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) CGSize size;
@end
@implementation YYShadow
- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }
- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }
- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }
- (NSUInteger)hash { return [self yy_modelHash]; }
- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }
@end
*/
@interface NSObject (YYModel)
/**
Creates and returns a new instance of the receiver from a json.
This method is thread-safe.
@param json A json object in `NSDictionary`, `NSString` or `NSData`.
@return A new instance created from the json, or nil if an error occurs.
*/
+ (nullable instancetype)yy_modelWithJSON:(id)json;
/**
Creates and returns a new instance of the receiver from a key-value dictionary.
This method is thread-safe.
@param dictionary A key-value dictionary mapped to the instance's properties.
Any invalid key-value pair in dictionary will be ignored.
@return A new instance created from the dictionary, or nil if an error occurs.
@discussion The key in `dictionary` will mapped to the reciever's property name,
and the value will set to the property. If the value's type does not match the
property, this method will try to convert the value based on these rules:
`NSString` or `NSNumber` -> c number, such as BOOL, int, long, float, NSUInteger...
`NSString` -> NSDate, parsed with format "yyyy-MM-dd'T'HH:mm:ssZ", "yyyy-MM-dd HH:mm:ss" or "yyyy-MM-dd".
`NSString` -> NSURL.
`NSValue` -> struct or union, such as CGRect, CGSize, ...
`NSString` -> SEL, Class.
*/
+ (nullable instancetype)yy_modelWithDictionary:(NSDictionary *)dictionary;
/**
Set the receiver's properties with a json object.
@discussion Any invalid data in json will be ignored.
@param json A json object of `NSDictionary`, `NSString` or `NSData`, mapped to the
receiver's properties.
@return Whether succeed.
*/
- (BOOL)yy_modelSetWithJSON:(id)json;
/**
Set the receiver's properties with a key-value dictionary.
@param dic A key-value dictionary mapped to the receiver's properties.
Any invalid key-value pair in dictionary will be ignored.
@discussion The key in `dictionary` will mapped to the reciever's property name,
and the value will set to the property. If the value's type doesn't match the
property, this method will try to convert the value based on these rules:
`NSString`, `NSNumber` -> c number, such as BOOL, int, long, float, NSUInteger...
`NSString` -> NSDate, parsed with format "yyyy-MM-dd'T'HH:mm:ssZ", "yyyy-MM-dd HH:mm:ss" or "yyyy-MM-dd".
`NSString` -> NSURL.
`NSValue` -> struct or union, such as CGRect, CGSize, ...
`NSString` -> SEL, Class.
@return Whether succeed.
*/
- (BOOL)yy_modelSetWithDictionary:(NSDictionary *)dic;
/**
Generate a json object from the receiver's properties.
@return A json object in `NSDictionary` or `NSArray`, or nil if an error occurs.
See [NSJSONSerialization isValidJSONObject] for more information.
@discussion Any of the invalid property is ignored.
If the reciver is `NSArray`, `NSDictionary` or `NSSet`, it just convert
the inner object to json object.
*/
- (nullable id)yy_modelToJSONObject;
/**
Generate a json string's data from the receiver's properties.
@return A json string's data, or nil if an error occurs.
@discussion Any of the invalid property is ignored.
If the reciver is `NSArray`, `NSDictionary` or `NSSet`, it will also convert the
inner object to json string.
*/
- (nullable NSData *)yy_modelToJSONData;
/**
Generate a json string from the receiver's properties.
@return A json string, or nil if an error occurs.
@discussion Any of the invalid property is ignored.
If the reciver is `NSArray`, `NSDictionary` or `NSSet`, it will also convert the
inner object to json string.
*/
- (nullable NSString *)yy_modelToJSONString;
/**
Copy a instance with the receiver's properties.
@return A copied instance, or nil if an error occurs.
*/
- (nullable id)yy_modelCopy;
/**
Encode the receiver's properties to a coder.
@param aCoder An archiver object.
*/
- (void)yy_modelEncodeWithCoder:(NSCoder *)aCoder;
/**
Decode the receiver's properties from a decoder.
@param aDecoder An archiver object.
@return self
*/
- (id)yy_modelInitWithCoder:(NSCoder *)aDecoder;
/**
Get a hash code with the receiver's properties.
@return Hash code.
*/
- (NSUInteger)yy_modelHash;
/**
Compares the receiver with another object for equality, based on properties.
@param model Another object.
@return `YES` if the reciever is equal to the object, otherwise `NO`.
*/
- (BOOL)yy_modelIsEqual:(id)model;
/**
Description method for debugging purposes based on properties.
@return A string that describes the contents of the receiver.
*/
- (NSString *)yy_modelDescription;
@end
/**
Provide some data-model method for NSArray.
*/
@interface NSArray (YYModel)
/**
Creates and returns an array from a json-array.
This method is thread-safe.
@param cls The instance's class in array.
@param json A json array of `NSArray`, `NSString` or `NSData`.
Example: [{"name","Mary"},{name:"Joe"}]
@return A array, or nil if an error occurs.
*/
+ (nullable NSArray *)yy_modelArrayWithClass:(Class)cls json:(id)json;
@end
/**
Provide some data-model method for NSDictionary.
*/
@interface NSDictionary (YYModel)
/**
Creates and returns a dictionary from a json.
This method is thread-safe.
@param cls The value instance's class in dictionary.
@param json A json dictionary of `NSDictionary`, `NSString` or `NSData`.
Example: {"user1":{"name","Mary"}, "user2": {name:"Joe"}}
@return A dictionary, or nil if an error occurs.
*/
+ (nullable NSDictionary *)yy_modelDictionaryWithClass:(Class)cls json:(id)json;
@end
/**
If the default model transform does not fit to your model class, implement one or
more method in this protocol to change the default key-value transform process.
There's no need to add '<YYModel>' to your class header.
*/
@protocol YYModel <NSObject>
@optional
/**
Custom property mapper.
@discussion If the key in JSON/Dictionary does not match to the model's property name,
implements this method and returns the additional mapper.
Example:
json:
{
"n":"Harry Pottery",
"p": 256,
"ext" : {
"desc" : "A book written by J.K.Rowling."
},
"ID" : 100010
}
model:
@interface YYBook : NSObject
@property NSString *name;
@property NSInteger page;
@property NSString *desc;
@property NSString *bookID;
@end
@implementation YYBook
+ (NSDictionary *)modelCustomPropertyMapper {
return @{@"name" : @"n",
@"page" : @"p",
@"desc" : @"ext.desc",
@"bookID": @[@"id", @"ID", @"book_id"]};
}
@end
@return A custom mapper for properties.
*/
+ (nullable NSDictionary<NSString *, id> *)modelCustomPropertyMapper;
/**
The generic class mapper for container properties.
@discussion If the property is a container object, such as NSArray/NSSet/NSDictionary,
implements this method and returns a property->class mapper, tells which kind of
object will be add to the array/set/dictionary.
Example:
@class YYShadow, YYBorder, YYAttachment;
@interface YYAttributes
@property NSString *name;
@property NSArray *shadows;
@property NSSet *borders;
@property NSDictionary *attachments;
@end
@implementation YYAttributes
+ (NSDictionary *)modelContainerPropertyGenericClass {
return @{@"shadows" : [YYShadow class],
@"borders" : YYBorder.class,
@"attachments" : @"YYAttachment" };
}
@end
@return A class mapper.
*/
+ (nullable NSDictionary<NSString *, id> *)modelContainerPropertyGenericClass;
/**
If you need to create instances of different classes during json->object transform,
use the method to choose custom class based on dictionary data.
@discussion If the model implements this method, it will be called to determine resulting class
during `+modelWithJSON:`, `+modelWithDictionary:`, conveting object of properties of parent objects
(both singular and containers via `+modelContainerPropertyGenericClass`).
Example:
@class YYCircle, YYRectangle, YYLine;
@implementation YYShape
+ (Class)modelCustomClassForDictionary:(NSDictionary*)dictionary {
if (dictionary[@"radius"] != nil) {
return [YYCircle class];
} else if (dictionary[@"width"] != nil) {
return [YYRectangle class];
} else if (dictionary[@"y2"] != nil) {
return [YYLine class];
} else {
return [self class];
}
}
@end
@param dictionary The json/kv dictionary.
@return Class to create from this dictionary, `nil` to use current class.
*/
+ (nullable Class)modelCustomClassForDictionary:(NSDictionary *)dictionary;
/**
All the properties in blacklist will be ignored in model transform process.
Returns nil to ignore this feature.
@return An array of property's name.
*/
+ (nullable NSArray<NSString *> *)modelPropertyBlacklist;
/**
If a property is not in the whitelist, it will be ignored in model transform process.
Returns nil to ignore this feature.
@return An array of property's name.
*/
+ (nullable NSArray<NSString *> *)modelPropertyWhitelist;
/**
This method's behavior is similar to `- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic;`,
but be called before the model transform.
@discussion If the model implements this method, it will be called before
`+modelWithJSON:`, `+modelWithDictionary:`, `-modelSetWithJSON:` and `-modelSetWithDictionary:`.
If this method returns nil, the transform process will ignore this model.
@param dic The json/kv dictionary.
@return Returns the modified dictionary, or nil to ignore this model.
*/
- (NSDictionary *)modelCustomWillTransformFromDictionary:(NSDictionary *)dic;
/**
If the default json-to-model transform does not fit to your model object, implement
this method to do additional process. You can also use this method to validate the
model's properties.
@discussion If the model implements this method, it will be called at the end of
`+modelWithJSON:`, `+modelWithDictionary:`, `-modelSetWithJSON:` and `-modelSetWithDictionary:`.
If this method returns NO, the transform process will ignore this model.
@param dic The json/kv dictionary.
@return Returns YES if the model is valid, or NO to ignore this model.
*/
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic;
/**
If the default model-to-json transform does not fit to your model class, implement
this method to do additional process. You can also use this method to validate the
json dictionary.
@discussion If the model implements this method, it will be called at the end of
`-modelToJSONObject` and `-modelToJSONString`.
If this method returns NO, the transform process will ignore this json dictionary.
@param dic The json dictionary.
@return Returns YES if the model is valid, or NO to ignore this model.
*/
- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic;
@end
NS_ASSUME_NONNULL_END

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//
// YYClassInfo.h
// YYModel <https://github.com/ibireme/YYModel>
//
// Created by ibireme on 15/5/9.
// Copyright (c) 2015 ibireme.
//
// This source code is licensed under the MIT-style license found in the
// LICENSE file in the root directory of this source tree.
//
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
NS_ASSUME_NONNULL_BEGIN
/**
Type encoding's type.
*/
typedef NS_OPTIONS(NSUInteger, YYEncodingType) {
YYEncodingTypeMask = 0xFF, ///< mask of type value
YYEncodingTypeUnknown = 0, ///< unknown
YYEncodingTypeVoid = 1, ///< void
YYEncodingTypeBool = 2, ///< bool
YYEncodingTypeInt8 = 3, ///< char / BOOL
YYEncodingTypeUInt8 = 4, ///< unsigned char
YYEncodingTypeInt16 = 5, ///< short
YYEncodingTypeUInt16 = 6, ///< unsigned short
YYEncodingTypeInt32 = 7, ///< int
YYEncodingTypeUInt32 = 8, ///< unsigned int
YYEncodingTypeInt64 = 9, ///< long long
YYEncodingTypeUInt64 = 10, ///< unsigned long long
YYEncodingTypeFloat = 11, ///< float
YYEncodingTypeDouble = 12, ///< double
YYEncodingTypeLongDouble = 13, ///< long double
YYEncodingTypeObject = 14, ///< id
YYEncodingTypeClass = 15, ///< Class
YYEncodingTypeSEL = 16, ///< SEL
YYEncodingTypeBlock = 17, ///< block
YYEncodingTypePointer = 18, ///< void*
YYEncodingTypeStruct = 19, ///< struct
YYEncodingTypeUnion = 20, ///< union
YYEncodingTypeCString = 21, ///< char*
YYEncodingTypeCArray = 22, ///< char[10] (for example)
YYEncodingTypeQualifierMask = 0xFF00, ///< mask of qualifier
YYEncodingTypeQualifierConst = 1 << 8, ///< const
YYEncodingTypeQualifierIn = 1 << 9, ///< in
YYEncodingTypeQualifierInout = 1 << 10, ///< inout
YYEncodingTypeQualifierOut = 1 << 11, ///< out
YYEncodingTypeQualifierBycopy = 1 << 12, ///< bycopy
YYEncodingTypeQualifierByref = 1 << 13, ///< byref
YYEncodingTypeQualifierOneway = 1 << 14, ///< oneway
YYEncodingTypePropertyMask = 0xFF0000, ///< mask of property
YYEncodingTypePropertyReadonly = 1 << 16, ///< readonly
YYEncodingTypePropertyCopy = 1 << 17, ///< copy
YYEncodingTypePropertyRetain = 1 << 18, ///< retain
YYEncodingTypePropertyNonatomic = 1 << 19, ///< nonatomic
YYEncodingTypePropertyWeak = 1 << 20, ///< weak
YYEncodingTypePropertyCustomGetter = 1 << 21, ///< getter=
YYEncodingTypePropertyCustomSetter = 1 << 22, ///< setter=
YYEncodingTypePropertyDynamic = 1 << 23, ///< @dynamic
};
/**
Get the type from a Type-Encoding string.
@discussion See also:
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtPropertyIntrospection.html
@param typeEncoding A Type-Encoding string.
@return The encoding type.
*/
YYEncodingType YYEncodingGetType(const char *typeEncoding);
/**
Instance variable information.
*/
@interface YYClassIvarInfo : NSObject
@property (nonatomic, assign, readonly) Ivar ivar; ///< ivar opaque struct
@property (nonatomic, strong, readonly) NSString *name; ///< Ivar's name
@property (nonatomic, assign, readonly) ptrdiff_t offset; ///< Ivar's offset
@property (nonatomic, strong, readonly) NSString *typeEncoding; ///< Ivar's type encoding
@property (nonatomic, assign, readonly) YYEncodingType type; ///< Ivar's type
/**
Creates and returns an ivar info object.
@param ivar ivar opaque struct
@return A new object, or nil if an error occurs.
*/
- (instancetype)initWithIvar:(Ivar)ivar;
@end
/**
Method information.
*/
@interface YYClassMethodInfo : NSObject
@property (nonatomic, assign, readonly) Method method; ///< method opaque struct
@property (nonatomic, strong, readonly) NSString *name; ///< method name
@property (nonatomic, assign, readonly) SEL sel; ///< method's selector
@property (nonatomic, assign, readonly) IMP imp; ///< method's implementation
@property (nonatomic, strong, readonly) NSString *typeEncoding; ///< method's parameter and return types
@property (nonatomic, strong, readonly) NSString *returnTypeEncoding; ///< return value's type
@property (nullable, nonatomic, strong, readonly) NSArray<NSString *> *argumentTypeEncodings; ///< array of arguments' type
/**
Creates and returns a method info object.
@param method method opaque struct
@return A new object, or nil if an error occurs.
*/
- (instancetype)initWithMethod:(Method)method;
@end
/**
Property information.
*/
@interface YYClassPropertyInfo : NSObject
@property (nonatomic, assign, readonly) objc_property_t property; ///< property's opaque struct
@property (nonatomic, strong, readonly) NSString *name; ///< property's name
@property (nonatomic, assign, readonly) YYEncodingType type; ///< property's type
@property (nonatomic, strong, readonly) NSString *typeEncoding; ///< property's encoding value
@property (nonatomic, strong, readonly) NSString *ivarName; ///< property's ivar name
@property (nullable, nonatomic, assign, readonly) Class cls; ///< may be nil
@property (nullable, nonatomic, strong, readonly) NSArray<NSString *> *protocols; ///< may nil
@property (nonatomic, assign, readonly) SEL getter; ///< getter (nonnull)
@property (nonatomic, assign, readonly) SEL setter; ///< setter (nonnull)
/**
Creates and returns a property info object.
@param property property opaque struct
@return A new object, or nil if an error occurs.
*/
- (instancetype)initWithProperty:(objc_property_t)property;
@end
/**
Class information for a class.
*/
@interface YYClassInfo : NSObject
@property (nonatomic, assign, readonly) Class cls; ///< class object
@property (nullable, nonatomic, assign, readonly) Class superCls; ///< super class object
@property (nullable, nonatomic, assign, readonly) Class metaCls; ///< class's meta class object
@property (nonatomic, readonly) BOOL isMeta; ///< whether this class is meta class
@property (nonatomic, strong, readonly) NSString *name; ///< class name
@property (nullable, nonatomic, strong, readonly) YYClassInfo *superClassInfo; ///< super class's class info
@property (nullable, nonatomic, strong, readonly) NSDictionary<NSString *, YYClassIvarInfo *> *ivarInfos; ///< ivars
@property (nullable, nonatomic, strong, readonly) NSDictionary<NSString *, YYClassMethodInfo *> *methodInfos; ///< methods
@property (nullable, nonatomic, strong, readonly) NSDictionary<NSString *, YYClassPropertyInfo *> *propertyInfos; ///< properties
/**
If the class is changed (for example: you add a method to this class with
'class_addMethod()'), you should call this method to refresh the class info cache.
After called this method, `needUpdate` will returns `YES`, and you should call
'classInfoWithClass' or 'classInfoWithClassName' to get the updated class info.
*/
- (void)setNeedUpdate;
/**
If this method returns `YES`, you should stop using this instance and call
`classInfoWithClass` or `classInfoWithClassName` to get the updated class info.
@return Whether this class info need update.
*/
- (BOOL)needUpdate;
/**
Get the class info of a specified Class.
@discussion This method will cache the class info and super-class info
at the first access to the Class. This method is thread-safe.
@param cls A class.
@return A class info, or nil if an error occurs.
*/
+ (nullable instancetype)classInfoWithClass:(Class)cls;
/**
Get the class info of a specified Class.
@discussion This method will cache the class info and super-class info
at the first access to the Class. This method is thread-safe.
@param className A class name.
@return A class info, or nil if an error occurs.
*/
+ (nullable instancetype)classInfoWithClassName:(NSString *)className;
@end
NS_ASSUME_NONNULL_END

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//
// YYClassInfo.m
// YYModel <https://github.com/ibireme/YYModel>
//
// Created by ibireme on 15/5/9.
// Copyright (c) 2015 ibireme.
//
// This source code is licensed under the MIT-style license found in the
// LICENSE file in the root directory of this source tree.
//
#import "YYClassInfo.h"
#import <objc/runtime.h>
YYEncodingType YYEncodingGetType(const char *typeEncoding) {
char *type = (char *)typeEncoding;
if (!type) return YYEncodingTypeUnknown;
size_t len = strlen(type);
if (len == 0) return YYEncodingTypeUnknown;
YYEncodingType qualifier = 0;
bool prefix = true;
while (prefix) {
switch (*type) {
case 'r': {
qualifier |= YYEncodingTypeQualifierConst;
type++;
} break;
case 'n': {
qualifier |= YYEncodingTypeQualifierIn;
type++;
} break;
case 'N': {
qualifier |= YYEncodingTypeQualifierInout;
type++;
} break;
case 'o': {
qualifier |= YYEncodingTypeQualifierOut;
type++;
} break;
case 'O': {
qualifier |= YYEncodingTypeQualifierBycopy;
type++;
} break;
case 'R': {
qualifier |= YYEncodingTypeQualifierByref;
type++;
} break;
case 'V': {
qualifier |= YYEncodingTypeQualifierOneway;
type++;
} break;
default: { prefix = false; } break;
}
}
len = strlen(type);
if (len == 0) return YYEncodingTypeUnknown | qualifier;
switch (*type) {
case 'v': return YYEncodingTypeVoid | qualifier;
case 'B': return YYEncodingTypeBool | qualifier;
case 'c': return YYEncodingTypeInt8 | qualifier;
case 'C': return YYEncodingTypeUInt8 | qualifier;
case 's': return YYEncodingTypeInt16 | qualifier;
case 'S': return YYEncodingTypeUInt16 | qualifier;
case 'i': return YYEncodingTypeInt32 | qualifier;
case 'I': return YYEncodingTypeUInt32 | qualifier;
case 'l': return YYEncodingTypeInt32 | qualifier;
case 'L': return YYEncodingTypeUInt32 | qualifier;
case 'q': return YYEncodingTypeInt64 | qualifier;
case 'Q': return YYEncodingTypeUInt64 | qualifier;
case 'f': return YYEncodingTypeFloat | qualifier;
case 'd': return YYEncodingTypeDouble | qualifier;
case 'D': return YYEncodingTypeLongDouble | qualifier;
case '#': return YYEncodingTypeClass | qualifier;
case ':': return YYEncodingTypeSEL | qualifier;
case '*': return YYEncodingTypeCString | qualifier;
case '^': return YYEncodingTypePointer | qualifier;
case '[': return YYEncodingTypeCArray | qualifier;
case '(': return YYEncodingTypeUnion | qualifier;
case '{': return YYEncodingTypeStruct | qualifier;
case '@': {
if (len == 2 && *(type + 1) == '?')
return YYEncodingTypeBlock | qualifier;
else
return YYEncodingTypeObject | qualifier;
}
default: return YYEncodingTypeUnknown | qualifier;
}
}
@implementation YYClassIvarInfo
- (instancetype)initWithIvar:(Ivar)ivar {
if (!ivar) return nil;
self = [super init];
_ivar = ivar;
const char *name = ivar_getName(ivar);
if (name) {
_name = [NSString stringWithUTF8String:name];
}
_offset = ivar_getOffset(ivar);
const char *typeEncoding = ivar_getTypeEncoding(ivar);
if (typeEncoding) {
_typeEncoding = [NSString stringWithUTF8String:typeEncoding];
_type = YYEncodingGetType(typeEncoding);
}
return self;
}
@end
@implementation YYClassMethodInfo
- (instancetype)initWithMethod:(Method)method {
if (!method) return nil;
self = [super init];
_method = method;
_sel = method_getName(method);
_imp = method_getImplementation(method);
const char *name = sel_getName(_sel);
if (name) {
_name = [NSString stringWithUTF8String:name];
}
const char *typeEncoding = method_getTypeEncoding(method);
if (typeEncoding) {
_typeEncoding = [NSString stringWithUTF8String:typeEncoding];
}
char *returnType = method_copyReturnType(method);
if (returnType) {
_returnTypeEncoding = [NSString stringWithUTF8String:returnType];
free(returnType);
}
unsigned int argumentCount = method_getNumberOfArguments(method);
if (argumentCount > 0) {
NSMutableArray *argumentTypes = [NSMutableArray new];
for (unsigned int i = 0; i < argumentCount; i++) {
char *argumentType = method_copyArgumentType(method, i);
NSString *type = argumentType ? [NSString stringWithUTF8String:argumentType] : nil;
[argumentTypes addObject:type ? type : @""];
if (argumentType) free(argumentType);
}
_argumentTypeEncodings = argumentTypes;
}
return self;
}
@end
@implementation YYClassPropertyInfo
- (instancetype)initWithProperty:(objc_property_t)property {
if (!property) return nil;
self = [super init];
_property = property;
const char *name = property_getName(property);
if (name) {
_name = [NSString stringWithUTF8String:name];
}
YYEncodingType type = 0;
unsigned int attrCount;
objc_property_attribute_t *attrs = property_copyAttributeList(property, &attrCount);
for (unsigned int i = 0; i < attrCount; i++) {
switch (attrs[i].name[0]) {
case 'T': { // Type encoding
if (attrs[i].value) {
_typeEncoding = [NSString stringWithUTF8String:attrs[i].value];
type = YYEncodingGetType(attrs[i].value);
if ((type & YYEncodingTypeMask) == YYEncodingTypeObject && _typeEncoding.length) {
NSScanner *scanner = [NSScanner scannerWithString:_typeEncoding];
if (![scanner scanString:@"@\"" intoString:NULL]) continue;
NSString *clsName = nil;
if ([scanner scanUpToCharactersFromSet: [NSCharacterSet characterSetWithCharactersInString:@"\"<"] intoString:&clsName]) {
if (clsName.length) _cls = objc_getClass(clsName.UTF8String);
}
NSMutableArray *protocols = nil;
while ([scanner scanString:@"<" intoString:NULL]) {
NSString* protocol = nil;
if ([scanner scanUpToString:@">" intoString: &protocol]) {
if (protocol.length) {
if (!protocols) protocols = [NSMutableArray new];
[protocols addObject:protocol];
}
}
[scanner scanString:@">" intoString:NULL];
}
_protocols = protocols;
}
}
} break;
case 'V': { // Instance variable
if (attrs[i].value) {
_ivarName = [NSString stringWithUTF8String:attrs[i].value];
}
} break;
case 'R': {
type |= YYEncodingTypePropertyReadonly;
} break;
case 'C': {
type |= YYEncodingTypePropertyCopy;
} break;
case '&': {
type |= YYEncodingTypePropertyRetain;
} break;
case 'N': {
type |= YYEncodingTypePropertyNonatomic;
} break;
case 'D': {
type |= YYEncodingTypePropertyDynamic;
} break;
case 'W': {
type |= YYEncodingTypePropertyWeak;
} break;
case 'G': {
type |= YYEncodingTypePropertyCustomGetter;
if (attrs[i].value) {
_getter = NSSelectorFromString([NSString stringWithUTF8String:attrs[i].value]);
}
} break;
case 'S': {
type |= YYEncodingTypePropertyCustomSetter;
if (attrs[i].value) {
_setter = NSSelectorFromString([NSString stringWithUTF8String:attrs[i].value]);
}
} // break; commented for code coverage in next line
default: break;
}
}
if (attrs) {
free(attrs);
attrs = NULL;
}
_type = type;
if (_name.length) {
if (!_getter) {
_getter = NSSelectorFromString(_name);
}
if (!_setter) {
_setter = NSSelectorFromString([NSString stringWithFormat:@"set%@%@:", [_name substringToIndex:1].uppercaseString, [_name substringFromIndex:1]]);
}
}
return self;
}
@end
@implementation YYClassInfo {
BOOL _needUpdate;
}
- (instancetype)initWithClass:(Class)cls {
if (!cls) return nil;
self = [super init];
_cls = cls;
_superCls = class_getSuperclass(cls);
_isMeta = class_isMetaClass(cls);
if (!_isMeta) {
_metaCls = objc_getMetaClass(class_getName(cls));
}
_name = NSStringFromClass(cls);
[self _update];
_superClassInfo = [self.class classInfoWithClass:_superCls];
return self;
}
- (void)_update {
_ivarInfos = nil;
_methodInfos = nil;
_propertyInfos = nil;
Class cls = self.cls;
unsigned int methodCount = 0;
Method *methods = class_copyMethodList(cls, &methodCount);
if (methods) {
NSMutableDictionary *methodInfos = [NSMutableDictionary new];
_methodInfos = methodInfos;
for (unsigned int i = 0; i < methodCount; i++) {
YYClassMethodInfo *info = [[YYClassMethodInfo alloc] initWithMethod:methods[i]];
if (info.name) methodInfos[info.name] = info;
}
free(methods);
}
unsigned int propertyCount = 0;
objc_property_t *properties = class_copyPropertyList(cls, &propertyCount);
if (properties) {
NSMutableDictionary *propertyInfos = [NSMutableDictionary new];
_propertyInfos = propertyInfos;
for (unsigned int i = 0; i < propertyCount; i++) {
YYClassPropertyInfo *info = [[YYClassPropertyInfo alloc] initWithProperty:properties[i]];
if (info.name) propertyInfos[info.name] = info;
}
free(properties);
}
unsigned int ivarCount = 0;
Ivar *ivars = class_copyIvarList(cls, &ivarCount);
if (ivars) {
NSMutableDictionary *ivarInfos = [NSMutableDictionary new];
_ivarInfos = ivarInfos;
for (unsigned int i = 0; i < ivarCount; i++) {
YYClassIvarInfo *info = [[YYClassIvarInfo alloc] initWithIvar:ivars[i]];
if (info.name) ivarInfos[info.name] = info;
}
free(ivars);
}
if (!_ivarInfos) _ivarInfos = @{};
if (!_methodInfos) _methodInfos = @{};
if (!_propertyInfos) _propertyInfos = @{};
_needUpdate = NO;
}
- (void)setNeedUpdate {
_needUpdate = YES;
}
- (BOOL)needUpdate {
return _needUpdate;
}
+ (instancetype)classInfoWithClass:(Class)cls {
if (!cls) return nil;
static CFMutableDictionaryRef classCache;
static CFMutableDictionaryRef metaCache;
static dispatch_once_t onceToken;
static dispatch_semaphore_t lock;
dispatch_once(&onceToken, ^{
classCache = CFDictionaryCreateMutable(CFAllocatorGetDefault(), 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
metaCache = CFDictionaryCreateMutable(CFAllocatorGetDefault(), 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
lock = dispatch_semaphore_create(1);
});
dispatch_semaphore_wait(lock, DISPATCH_TIME_FOREVER);
YYClassInfo *info = CFDictionaryGetValue(class_isMetaClass(cls) ? metaCache : classCache, (__bridge const void *)(cls));
if (info && info->_needUpdate) {
[info _update];
}
dispatch_semaphore_signal(lock);
if (!info) {
info = [[YYClassInfo alloc] initWithClass:cls];
if (info) {
dispatch_semaphore_wait(lock, DISPATCH_TIME_FOREVER);
CFDictionarySetValue(info.isMeta ? metaCache : classCache, (__bridge const void *)(cls), (__bridge const void *)(info));
dispatch_semaphore_signal(lock);
}
}
return info;
}
+ (instancetype)classInfoWithClassName:(NSString *)className {
Class cls = NSClassFromString(className);
return [self classInfoWithClass:cls];
}
@end

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Pods/YYModel/YYModel/YYModel.h generated Normal file
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//
// YYModel.h
// YYModel <https://github.com/ibireme/YYModel>
//
// Created by ibireme on 15/5/10.
// Copyright (c) 2015 ibireme.
//
// This source code is licensed under the MIT-style license found in the
// LICENSE file in the root directory of this source tree.
//
#import <Foundation/Foundation.h>
#if __has_include(<YYModel/YYModel.h>)
FOUNDATION_EXPORT double YYModelVersionNumber;
FOUNDATION_EXPORT const unsigned char YYModelVersionString[];
#import <YYModel/NSObject+YYModel.h>
#import <YYModel/YYClassInfo.h>
#else
#import "NSObject+YYModel.h"
#import "YYClassInfo.h"
#endif