This example will load an URL, scrape all id's from the HTML page and use them for auto-completion.
import haxe.macro.Context; import haxe.macro.Expr; class MyMacro { public static function build(url:String) { var h = haxe.Http.requestUrl(url); //trace(h); var r = ~/id=["']([A-Za-z0-9]+)["']/; var ids = []; while (r.match(h)) { var id = r.matched(1); ids.remove(id); ids.push(id); h = r.matchedRight(); } var fields = Context.getBuildFields(); var gtype = TAnonymous([for (id in ids) { name : id, pos : Context.currentPos(), kind : FVar(macro:String) }]); var gids:Field = { name : "gids", pos : Context.currentPos(), kind : FVar(gtype), access : [AStatic], }; fields.push(gids); return fields; } }
Usage
@:build(MyMacro.build("http://www.msn.com/en-us/")) class Main { static function main() { Main.gids; // auto-complete here } }
Demo
Explanation in video
Start at 21:00
More info: https://haxe.org/blog/nicolas-about-haxe-3
