From b466717c6ed8eb9e7fde8bf0de8a4b5eb4e17107 Mon Sep 17 00:00:00 2001
From: nazrin <nazrin7693@proton.me>
Date: Wed, 28 May 2025 22:56:01 +0000
Subject: [PATCH] expr.d: metafy a bit more

---
 src/expr.d | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/expr.d b/src/expr.d
index 408129b..e28afec 100644
--- a/src/expr.d
+++ b/src/expr.d
@@ -1,5 +1,6 @@
 import std.conv;
 import std.stdio;
+import std.meta : AliasSeq;
 
 import taggedalgebraic;
 
@@ -13,13 +14,16 @@ abstract class Expr{
 		R visit(Literal expr);
 		R visit(Unary expr);
 	}
-	abstract string accept(Visitor!string visitor);
+	private alias rTypes = AliasSeq!(string);
+	static foreach(T; rTypes)
+		abstract T accept(Visitor!T visitor);
 	private template defCtorAndAccept(){
 		this(Args...)(auto ref Args args){
 			static foreach(i, a; args)
 				this.tupleof[i] = a;
 		}
-		override string accept(Visitor!string visitor) => visitor.visit(this);
+		static foreach(T; rTypes)
+			override T accept(Visitor!T visitor) => visitor.visit(this);
 	}
 
 	static class Binary : Expr{