Roman Elizarov | f16fd27 | 2017-02-07 11:26:00 +0300 | [diff] [blame] | 1 | /* |
Roman Elizarov | 1f74a2d | 2018-06-29 19:19:45 +0300 | [diff] [blame^] | 2 | * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
Roman Elizarov | f16fd27 | 2017-02-07 11:26:00 +0300 | [diff] [blame] | 3 | */ |
| 4 | |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 5 | // This file was automatically generated from coroutines-guide.md by Knit tool. Do not edit. |
Roman Elizarov | a9687a3 | 2018-06-29 17:28:38 +0300 | [diff] [blame] | 6 | package kotlinx.coroutines.experimental.guide.channel05 |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 7 | |
Roman Elizarov | caaed5c | 2017-02-15 17:56:02 +0300 | [diff] [blame] | 8 | import kotlinx.coroutines.experimental.* |
| 9 | import kotlinx.coroutines.experimental.channels.* |
Roman Elizarov | 9fe5f46 | 2018-02-21 19:05:52 +0300 | [diff] [blame] | 10 | import kotlin.coroutines.experimental.* |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 11 | |
Roman Elizarov | a5e653f | 2017-02-13 13:49:55 +0300 | [diff] [blame] | 12 | fun numbersFrom(context: CoroutineContext, start: Int) = produce<Int>(context) { |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 13 | var x = start |
| 14 | while (true) send(x++) // infinite stream of integers from start |
| 15 | } |
| 16 | |
Roman Elizarov | a5e653f | 2017-02-13 13:49:55 +0300 | [diff] [blame] | 17 | fun filter(context: CoroutineContext, numbers: ReceiveChannel<Int>, prime: Int) = produce<Int>(context) { |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 18 | for (x in numbers) if (x % prime != 0) send(x) |
| 19 | } |
| 20 | |
| 21 | fun main(args: Array<String>) = runBlocking<Unit> { |
Roman Elizarov | 43e3af7 | 2017-07-21 16:01:31 +0300 | [diff] [blame] | 22 | var cur = numbersFrom(coroutineContext, 2) |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 23 | for (i in 1..10) { |
| 24 | val prime = cur.receive() |
| 25 | println(prime) |
Roman Elizarov | 43e3af7 | 2017-07-21 16:01:31 +0300 | [diff] [blame] | 26 | cur = filter(coroutineContext, cur, prime) |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 27 | } |
Roman Elizarov | 8b38fa2 | 2017-09-27 17:44:31 +0300 | [diff] [blame] | 28 | coroutineContext.cancelChildren() // cancel all children to let main finish |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 29 | } |