Hashlink incoherent error message "string" should be a number

1

I am trying to develop an application in Haxe, I would like to use hashlink for performance.

The results didn’t made sense for me, so I hooked the debugger, but I could not get whats going on

THis is my function

 function is_match(callid:String,did:String,ip:String,cfg:Config){
	 var t1=(callid==null || cfg.callid==callid);
	 var t2=(did==null || cfg.hotline==did);
	 var t3=(ip==null || cfg.ip==ip);
	 trace(t1,t2,t3);
	 var is_match= t1 && t2 && t3;
	trace(callid,did,ip,cfg,is_match);
	return is_match;
 }

in regular sense did==cfg.hotline, the other parameters are null (meaning any)
I would expect all conditons to be true.
Unfortanly t2 was false.

I added some watch expressions in the vscode haslink debugger
cfg.hotline==did: “9457208489” should be a number
Std.parseInt(did)==Std.parseInt(cfg.hotline): true

I couldn’t wrap my head around why comparing two equal strings should fail, and what the error is about, why does it expect a number.
the cfg class have been instantiated with Json.parse, it might not be a proper class, however the field in the json file is a string, same when checking with the debugger its value.

What furthor action/test do anyone recommand?

Thanks

2

Two thoughts:

  • Please post the code where Config is declared.
  • Try did==cfg.hotline instead of cfg.hotline==did.
3 
class Config {
	public function new() {
		
	}
	public var callid="";
	public var hotline="";
	public var change_callid="";
	public var change_did="";
	public var dest="";
	
	public function dest_is_final(){
		var ip_regex=~/^((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4}$/g;
		return ip_regex.match(dest);
	}
	//source ip htat is allowed to use this route
	public var ip="";
	public var priority=0;
}

swapping the right and left values didn’t changed.

4

I was loading the Config struct from a json file, using haxe.Json.parse, I changed to use the haxelib json2object instead, now the problem is solved, the error is still misleading (or maybe, not leading at all), I would like to understand it, but at least it is working.

I changed from hashlink to python, to be able to continue development (big pro for haxe), I bumped into a situation where i had to call a method on the config, something that wasn’t possible using the Dynamic generated by Json.parse, after changing to json2object I reverted back to hashlink and it is working now.

Thanks anyway

I wish I could understand the error.

5

That explains it. Json.parse() doesn’t return class instances. and you’re going to run into errors on static targets if you try to use it that way.

json2object looks like a good solution for this case, but for future reference, anonymous structures are fully compatible with Json.parse().

typedef Config = {
	var callid:String;
	var hotline:String;
	var change_callid:String;
	var change_did:String;
	var dest:String;
	//source ip htat is allowed to use this route
	var ip:String;
	var priority:String;
};
6

Thanks, I see.

And use static extensions for the methods?

7

Static extensions would work, as would an abstract wrapper. Or stick with json2object, for data validation. Or mix and match; json2object is compatible with anonymous structures and should probably be compatible with abstracts.