botsman / hxasync Goto Github PK
View Code? Open in Web Editor NEWThis library allows you to add "async" and "await" keywords in Python and JavaScript code almost the same way you would do it in the native code.
License: MIT License
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hxasync's Issues
Add possibility to invoke macros from command line
Would be good to avoid implementing interface or use build metadata and just specify argument in the command line when compiling sources.
Type safety / static async check
Would it possible to do so that when @async is used with a function, its type is change, so if @await is not used when calling the function type checking would fail?
Example
@async function returnZero(): Int {
return 0;
}
var i: Int = @await returnZero(); // compilation succeeds
var p: Promise<Int> = returnZero(); // compilation succeeds
var i2: Int = returnZero(); // compilation fails
Add interface which is to be used by end users
Would be good to have an interface, which end user could implement to be able to use async/await keywords.
Can't work with npm package "acorn" while using webpack
Hello, I'm using haxe to develop a tool project recently, I'm having some trouble with js.lib.promise syntax, after looking up related solutions in the community, I found haxelib hxasync, but I found that the project can't compile when I use it, the log information seems to be due to the npm Acorn library which was dependent on webpack, and the error output is as follows:
C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2490
throw err
^
SyntaxError: Unexpected token (536:19)
at Parser.pp$4.raise (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2488:13)
at Parser.pp.unexpected (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:623:8)
at Parser.pp.expect (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:617:26)
at Parser.pp$3.parseObj (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2173:14)
at Parser.pp$3.parseExprAtom (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1994:17)
at Parser.pp$3.parseExprSubscripts (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1872:19)
at Parser.pp$3.parseMaybeUnary (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1849:17)
at Parser.pp$3.parseExprOps (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1791:19)
at Parser.pp$3.parseMaybeConditional (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1774:19)
at Parser.pp$3.parseMaybeAssign (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1750:19)
at Parser.pp$3.parseMaybeAssign (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1761:23)
at Parser.pp$3.parseExpression (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1722:19)
at Parser.pp$1.parseStatement (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:777:45)
at Parser.pp$1.parseBlock (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1040:23)
at Parser.pp$3.parseFunctionBody (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2362:22)
at Parser.pp$1.parseFunction (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1132:8)
at Parser.pp$3.parseExprAtom (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1999:17)
at Parser.pp$3.parseExprSubscripts (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1872:19)
at Parser.pp$3.parseMaybeUnary (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1849:17)
at Parser.pp$3.parseExprOps (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1791:19)
at Parser.pp$3.parseMaybeConditional (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1774:19)
at Parser.pp$3.parseMaybeAssign (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1750:19)
at Parser.pp$3.parseExpression (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1722:19)
at Parser.pp$3.parseParenExpression (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2025:18)
at Parser.pp$3.parseParenAndDistinguishExpression (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:2085:16)
at Parser.pp$3.parseExprAtom (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1978:41)
at Parser.pp$3.parseExprSubscripts (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1872:19)
at Parser.pp$3.parseMaybeUnary (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1849:17)
at Parser.pp$3.parseExprOps (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1791:19)
at Parser.pp$3.parseMaybeConditional (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1774:19)
at Parser.pp$3.parseMaybeAssign (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1750:19)
at Parser.pp$3.parseExpression (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:1722:19)
at Parser.pp$1.parseStatement (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:777:45)
at Parser.pp$1.parseTopLevel (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:672:23)
at Parser.parse (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:529:15)
at Object.parse (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\node_modules\acorn\dist\acorn.js:3378:37)
at Parser.processInput (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\tool\bin\split.js:1176:29)
at new Parser (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\tool\bin\split.js:1162:7)
at Object.HxSplit.run.$hx_exports.run (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-modular\tool\bin\split.js:1044:15)
at processOutput (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-loader\index.js:116:10)
at exec (C:\Users\Xuzx\Desktop\Haxe\OgmoEditor3-CE\node_modules\haxe-loader\index.js:94:27)
at ChildProcess.exithandler (child_process.js:285:7)
Do you know how to solve it?
You can install the hxasync lib in the Ogmo3 project and write some code in the initialization process for testing
await is not set when used as function argument
var a = someFunction(@await anotherFunction())
Improve asyncPlaceholder handling
- If Haxe function has some default parameters:
private function some(param: String = "asd") {}
then in JS and Python output Haxe adds something like:
if (param == null) {
param = "asd";
}
and that added code is placed before asyncPlaceholder
- In Python Haxe adds sometimes something like
_gthis = self
in the beginning of a function body, before async placeholder.
Probably both cases could be fixed with regexes. In the future would be good to get rid of regexes completely.
Fix error messages
The errors which are thrown inside macros must be "attached" to the place in real code, not to the macros code.
CI: add hxformat
String interpolation is not handled
string interpolation is not handled:
var a = 'asd ${@await someAyncFunction()}';
add flag for disabling typing
There are possible errors when trying to get expression type in macros.
Would be good to have a possibility to disable expression typing.
Haxelib release contains .git folder
Also .github, build, and dump. All kinds of stuff that doesn't need to be shared.
Avoid execution code-fixing function multiple times
test
123
Problem with (@await func()).field
Looks like that the code like the following
var f = (@await func()).field;is compiled into the following in python
f = await func().fieldwhich raises exception AttributeError 'coroutine' object has no attribute 'field'
Update to haxe 4.2
Not sure if any changes are needed. Have to check.
Improve type checking
Make sure that:
@asyncfunction return type is converted toAwaitable<T>.@awaitcan only be applied toAwaitable<T>(maybe implement this under some flag, because in JS you can await normal function).- after applying
@awaitexpression return type is converted toT.
Async functions can't return Void type
My code:
@async private function myAsyncFuncReturningVoid(): Void {
// do something
// line 244 is here
}
@async private function test() {
@await this.myAsyncFuncReturningVoid(); // line 264 is here
}
Compiler output:
ex.hx:244: characters 5-38 : Dynamic should be Void
ex.hx:244: characters 5-38 : Dynamic should be Void
ex.hx:264: characters 14-33 : Void should be hxasync.Awaitable<Void>
ex.hx:264: characters 14-33 : ... For function argument 'arg'
Handle Void return type
It seems that currently Void return type is converted to Dynamic.
It does not seem to be a problem, but it would be good to fix anyway.
Need to check whether it is true and try to fix that.
Improve return
I had to return null/None from async functions.
Would be good to keep implementation so that it deletes empty returns.
Type checking
-
If
@asyncis added to the function declaration, convert its return typeTtoAwaitable<T> -
If
@awaitis added beforeAwaitablefunction call, convert its return type fromAwaitable<T>toT -
Check that
@awaitis used only inside async context.
Add tests
Tests for Python, JavaScript and (later) for any other platform.
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