Variadic Type Parameters

Gama11 · December 29, 2019, 7:32pm

Rest type parameters + @:genericBuild? Nice code snippet by @nadako:

gist.github.com

https://gist.github.com/nadako/b086569b9fffb759a1b5

Main.hx

class Main {
	static function main() {
		var signal = new Signal<Int,String>();
		var conn = signal.connect(function(a, b) {
			trace('Well done $a $b');
		});
		signal.dispatch(10, "lol");
	}
}

Signal.hx

import haxe.Constraints.Function;

@:genericBuild(SignalMacro.build())
class Signal<Rest> {}

class SignalBase<T:Function> {
	var head:SignalConnection<T>;
	var tail:SignalConnection<T>;
	var toAddHead:SignalConnection<T>;
	var toAddTail:SignalConnection<T>;

This file has been truncated. show original

SignalMacro.hx

#if macro
import haxe.macro.Context;
import haxe.macro.Expr;
import haxe.macro.Type;

using haxe.macro.Tools;

class SignalMacro {
	static function build():ComplexType {
		return switch (Context.getLocalType()) {

This file has been truncated. show original