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// // IntegerOperators.swift // ObjectMapper // // Created by Suyeol Jeon on 17/02/2017. // Copyright © 2017 hearst. All rights reserved. //
import Foundation
// MARK: - Signed Integer
/// SignedInteger mapping public func <- <T: SignedInteger>(left: inout T, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T = toSignedInteger(right.currentValue) ?? 0 FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } }
/// Optional SignedInteger mapping public func <- <T: SignedInteger>(left: inout T?, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T? = toSignedInteger(right.currentValue) FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } }
// Code targeting the Swift 4.1 compiler and below. #if !(swift(>=4.1.50) || (swift(>=3.4) && !swift(>=4.0))) /// ImplicitlyUnwrappedOptional SignedInteger mapping public func <- <T: SignedInteger>(left: inout T!, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T! = toSignedInteger(right.currentValue) FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } } #endif
// MARK: - Unsigned Integer
/// UnsignedInteger mapping public func <- <T: UnsignedInteger>(left: inout T, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T = toUnsignedInteger(right.currentValue) ?? 0 FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } }
/// Optional UnsignedInteger mapping public func <- <T: UnsignedInteger>(left: inout T?, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T? = toUnsignedInteger(right.currentValue) FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } }
// Code targeting the Swift 4.1 compiler and below. #if !(swift(>=4.1.50) || (swift(>=3.4) && !swift(>=4.0))) /// ImplicitlyUnwrappedOptional UnsignedInteger mapping public func <- <T: UnsignedInteger>(left: inout T!, right: Map) { switch right.mappingType { case .fromJSON where right.isKeyPresent: let value: T! = toUnsignedInteger(right.currentValue) FromJSON.basicType(&left, object: value) case .toJSON: left >>> right default: () } } #endif
// MARK: - Casting Utils
/// Convert any value to `SignedInteger`. private func toSignedInteger<T: SignedInteger>(_ value: Any?) -> T? { guard let value = value, case let number as NSNumber = value else { return nil }
if T.self == Int.self, let x = Int(exactly: number.int64Value) { return T.init(x) } if T.self == Int8.self, let x = Int8(exactly: number.int64Value) { return T.init(x) } if T.self == Int16.self, let x = Int16(exactly: number.int64Value) { return T.init(x) } if T.self == Int32.self, let x = Int32(exactly: number.int64Value) { return T.init(x) } if T.self == Int64.self, let x = Int64(exactly: number.int64Value) { return T.init(x) }
return nil }
/// Convert any value to `UnsignedInteger`. private func toUnsignedInteger<T: UnsignedInteger>(_ value: Any?) -> T? { guard let value = value, case let number as NSNumber = value else { return nil }
if T.self == UInt.self, let x = UInt(exactly: number.uint64Value) { return T.init(x) } if T.self == UInt8.self, let x = UInt8(exactly: number.uint64Value) { return T.init(x) } if T.self == UInt16.self, let x = UInt16(exactly: number.uint64Value) { return T.init(x) } if T.self == UInt32.self, let x = UInt32(exactly: number.uint64Value) { return T.init(x) } if T.self == UInt64.self, let x = UInt64(exactly: number.uint64Value) { return T.init(x) }
return nil }
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