blob: 73c0fddf75dc8896fd662552ea0e76e3ff51bfe1 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
import asyncdispatch
proc completeOnReturn(fut: FutureVar[string], x: bool) {.async.} =
if x:
fut.mget() = ""
fut.mget.add("foobar")
return
proc completeOnImplicitReturn(fut: FutureVar[string], x: bool) {.async.} =
if x:
fut.mget() = ""
fut.mget.add("foobar")
proc failureTest(fut: FutureVar[string], x: bool) {.async.} =
if x:
raise newException(Exception, "Test")
proc manualComplete(fut: FutureVar[string], x: bool) {.async.} =
if x:
fut.mget() = "Hello World"
fut.complete()
return
proc main() {.async.} =
var fut: FutureVar[string]
fut = newFutureVar[string]()
await completeOnReturn(fut, true)
doAssert(fut.read() == "foobar")
fut = newFutureVar[string]()
await completeOnImplicitReturn(fut, true)
doAssert(fut.read() == "foobar")
fut = newFutureVar[string]()
let retFut = failureTest(fut, true)
yield retFut
doAssert(fut.read().isNil)
doAssert(fut.finished)
fut = newFutureVar[string]()
await manualComplete(fut, true)
doAssert(fut.read() == "Hello World")
waitFor main()
|