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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Foundation
import MacroExamplesInterface
func runMemberMacrosPlayground() {
// MARK: - Case Detection
@CaseDetection
enum Pet {
case dog
case cat(curious: Bool)
case parrot
case snake
}
let pet: Pet = .cat(curious: true)
print("Pet is dog: \(pet.isDog)")
print("Pet is cat: \(pet.isCat)")
// MARK: - Custom Codable
@CustomCodable
struct CustomCodableString: Codable {
@CodableKey(name: "OtherName")
var propertyWithOtherName: String
var propertyWithSameName: Bool
func randomFunction() {
}
}
let json = """
{
"OtherName": "Name",
"propertyWithSameName": true
}
""".data(using: .utf8)!
let jsonDecoder = JSONDecoder()
let product = try! jsonDecoder.decode(CustomCodableString.self, from: json)
print(product.propertyWithOtherName)
// MARK: - Meta Enum
// `@MetaEnum` adds a nested enum called `Meta` with the same cases, but no
// associated values/payloads. Handy for e.g. describing a schema.
@MetaEnum enum Value {
case integer(Int)
case text(String)
case boolean(Bool)
case null
}
print(Value.Meta(.integer(42)) == .integer)
// MARK: - New Type
@NewType(String.self)
struct Hostname:
NewTypeProtocol,
Hashable,
CustomStringConvertible
{}
@NewType(String.self)
struct Password:
NewTypeProtocol,
Hashable,
CustomStringConvertible
{
var description: String { "(redacted)" }
}
let hostname = Hostname("localhost")
print("hostname: description=\(hostname) hashValue=\(hostname.hashValue)")
let password = Password("squeamish ossifrage")
print("password: description=\(password) hashValue=\(password.hashValue)")
}
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