BuiltInBridgeType.swift
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//
// BuiltInBridgeType.swift
// HandyJSON
//
// Created by zhouzhuo on 15/07/2017.
// Copyright © 2017 aliyun. All rights reserved.
//
import Foundation
protocol _BuiltInBridgeType: _Transformable {
static func _transform(from object: Any) -> _BuiltInBridgeType?
func _plainValue() -> Any?
}
extension NSString: _BuiltInBridgeType {
static func _transform(from object: Any) -> _BuiltInBridgeType? {
if let str = String.transform(from: object) {
return NSString(string: str)
}
return nil
}
func _plainValue() -> Any? {
return self
}
}
extension NSNumber: _BuiltInBridgeType {
static func _transform(from object: Any) -> _BuiltInBridgeType? {
switch object {
case let num as NSNumber:
return num
case let str as NSString:
let lowercase = str.lowercased
if lowercase == "true" {
return NSNumber(booleanLiteral: true)
} else if lowercase == "false" {
return NSNumber(booleanLiteral: false)
} else {
// normal number
let formatter = NumberFormatter()
formatter.numberStyle = .decimal
return formatter.number(from: str as String)
}
default:
return nil
}
}
func _plainValue() -> Any? {
return self
}
}
extension NSArray: _BuiltInBridgeType {
static func _transform(from object: Any) -> _BuiltInBridgeType? {
return object as? NSArray
}
func _plainValue() -> Any? {
return (self as? Array<Any>)?.plainValue()
}
}
extension NSDictionary: _BuiltInBridgeType {
static func _transform(from object: Any) -> _BuiltInBridgeType? {
return object as? NSDictionary
}
func _plainValue() -> Any? {
return (self as? Dictionary<String, Any>)?.plainValue()
}
}