Roman Elizarov | f16fd27 | 2017-02-07 11:26:00 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-2017 JetBrains s.r.o. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 17 | // 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] | 18 | package kotlinx.coroutines.experimental.guide.channel05 |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 19 | |
Roman Elizarov | caaed5c | 2017-02-15 17:56:02 +0300 | [diff] [blame] | 20 | import kotlinx.coroutines.experimental.* |
| 21 | import kotlinx.coroutines.experimental.channels.* |
Roman Elizarov | 9fe5f46 | 2018-02-21 19:05:52 +0300 | [diff] [blame] | 22 | import kotlin.coroutines.experimental.* |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 23 | |
Roman Elizarov | a5e653f | 2017-02-13 13:49:55 +0300 | [diff] [blame] | 24 | fun numbersFrom(context: CoroutineContext, start: Int) = produce<Int>(context) { |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 25 | var x = start |
| 26 | while (true) send(x++) // infinite stream of integers from start |
| 27 | } |
| 28 | |
Roman Elizarov | a5e653f | 2017-02-13 13:49:55 +0300 | [diff] [blame] | 29 | fun filter(context: CoroutineContext, numbers: ReceiveChannel<Int>, prime: Int) = produce<Int>(context) { |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 30 | for (x in numbers) if (x % prime != 0) send(x) |
| 31 | } |
| 32 | |
| 33 | fun main(args: Array<String>) = runBlocking<Unit> { |
Roman Elizarov | 43e3af7 | 2017-07-21 16:01:31 +0300 | [diff] [blame] | 34 | var cur = numbersFrom(coroutineContext, 2) |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 35 | for (i in 1..10) { |
| 36 | val prime = cur.receive() |
| 37 | println(prime) |
Roman Elizarov | 43e3af7 | 2017-07-21 16:01:31 +0300 | [diff] [blame] | 38 | cur = filter(coroutineContext, cur, prime) |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 39 | } |
Roman Elizarov | 8b38fa2 | 2017-09-27 17:44:31 +0300 | [diff] [blame] | 40 | coroutineContext.cancelChildren() // cancel all children to let main finish |
Roman Elizarov | b7721cf | 2017-02-03 19:23:08 +0300 | [diff] [blame] | 41 | } |