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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 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 struct TSCBasic.ProcessResult
/// The ID of a preparation or update indexstore task. This allows us to log messages from multiple concurrently running
/// indexing tasks to the index log while still being able to differentiate them.
public enum IndexTaskID: Sendable {
case preparation(id: UInt32)
case updateIndexStore(id: UInt32)
private static func numberToEmojis(_ number: Int, numEmojis: Int) -> String {
let emojis = ["🟥", "🟩", "🟦", "⬜️", "🟪", "⬛️", "🟨", "🟫"]
var number = abs(number)
var result = ""
for _ in 0..<numEmojis {
let (quotient, remainder) = number.quotientAndRemainder(dividingBy: emojis.count)
result += emojis[remainder]
number = quotient
}
return result
}
/// Returns a two-character emoji string that allows easy differentiation between different task IDs.
///
/// This marker is prepended to every line in the index log.
public var emojiRepresentation: String {
// Multiply by 2 and optionally add 1 to make sure preparation and update index store have distinct IDs.
// Run .hashValue to make sure we semi-randomly pick new emoji markers for new tasks
let numEmojis = 3
switch self {
case .preparation(id: let id):
return Self.numberToEmojis((id * 2).hashValue, numEmojis: numEmojis)
case .updateIndexStore(id: let id):
return Self.numberToEmojis((id * 2 + 1).hashValue, numEmojis: numEmojis)
}
}
}
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