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# macros
  • w
    i think before i had them as Expr and checked for strings or ERegs
  • w
    not sure why i changed that
  • w
    invalid how?
  • g
    you can't pass functions as build macro argument iirc
  • w
    also I just realized im calling 
    flixel.system.FlxAssets
    which is a helper that calls 
    flixel.system.FlxAssetPaths
    , which is where I added the arg
  • w
    in FlxAssets include/exclude are Expr which are converted to ERegs for FlxAssetPaths
  • w
    Now i know what to do, thanks Rudy
  • e
    Hej, I come back with an old question I've asked some years ago on the forum about static extension and macro function, is there any evolution about being able to use static extension macro function and get the untyped expression on which the macro function apply instead of getting 
    @:storedTypedExpr XX
    ? Because I'm still using a custom StaticExtension build macro that transforms all 
    expr!.myMacroFunc()
    into 
    myMacroFunc( expr )
    but maybe things have changed since this time ?
  • w
    do i need to worry about memory leaks of a macro?
  • w
    or once the macro is done all memory used by it is freed
  • w
    i have circular references on my macro objects
  • c
    macros only happen at compile time, so once they are done, they are done. Once they completed withuout crashing they can not influence your runtime. However, that is different from you introducing code that has memory leaks with your macros
  • g
    If you have memory leaks on persistent macro data it might very well be an issue. Just not a runtime issue ofc, but still. I haven't checked, but I would not expect non persistent data to be an issue (eval should take care of this)
  • g
    > so once they are done, they are done Not necessarily true with compilation server (which the majority of us use, at least through Haxe LSP)
  • c
    Oh, never thought about a ever running compilation server, but that makes sense
  • w
    I had no persistent macro data, but i also just rewrote it to not need refs
  • b
    What would be a good way to pass some actions/code from normal context to be executed at macro context?
  • b
    E.g. if I have an expression macro and I would want to give it some class/function that it would then execute as part of the macro?
  • b
    Not sure how to make sure the class I want to use gets included in the macro context... without first referencing it in a macro. 😅
  • e
    Do you mean you want to kind of resolve "macro" class in macro context ?
  • b
    Yep.
  • b
    I sorta-kinda found a workaround that I used once in some older project, just took me a while to figure which project it was. 😅
  • b
    I let the class register itself in macro context to some persistent map, during init macro. Then I refer to that via key, some string or something, from normal context as constant given to macro context.
  • b
    Awkward, but w/e.
  • e
    I raised an "issue" some weeks ago about that without success : https://github.com/HaxeFoundation/haxe/issues/11147 Can you give me an example of your workaround please ? I don't really understand how do you do... My workaround is to do something like that (also in an init macro ) :
    Copy code
    haxe
function myInitFunction(){
  ftk.tools.Rtmi.build;
  ftk.macro.Compiler.autoBuild2Build( "ftk.tools.Rtmi.IRtmi", [ "ftk.db.Session", "ftk.db.DBState" ], "ftk.tools.Rtmi.build" );
}
  • b
    It just comes down to what Simon said there, you need the macro context to see the class somewhere first.
  • b
    Not sure what ways there are to do that. You simply need to mention it explicitly at some point somewhere. Not sure if there's more than one macro contexts, I didn't try.
  • b
    Might just need some empty macro function that does nothing but mention the class.
  • b
    Maybe that issue should have turned into a feature request for loading a class into macro context from a string. 😄
  • e
    That is exactly what I'm doing, just mentionning the class in the init macro function. Yes my issue was a question/request ... but I also don't really know how this could be done... get the class from a string of reverse like get the name from a function 😄