//
//  Copyright RevenueCat Inc. All Rights Reserved.
//
//  Licensed under the MIT License (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//      https://opensource.org/licenses/MIT
//
//  Optional+Extensions.swift
//
//  Created by Nacho Soto on 3/30/22.

import Foundation

/// Protocol definition to be able to use `Optional` as a type.
internal protocol OptionalType {

    associatedtype Wrapped

    init(optional: Wrapped?)
    var asOptional: Wrapped? { get }

}

extension Optional: OptionalType {

    init(optional: Wrapped?) { self = optional }

    var asOptional: Wrapped? { return self }

}

extension OptionalType {

    /// - Returns: unwrapped value if present.
    /// - Throws: `error` if the value is not present.
    func orThrow(_ error: @autoclosure () -> Error) throws -> Wrapped {
        if let value = self.asOptional {
            return value
        } else {
            throw error()
        }
    }

}