add string util

util.d

@@ -14,6 +14,8 @@ import std.traits;
 import core.stdc.string : memset;
 import core.simd;
 
+enum bool StringType(T)     = (is(T: string) || is(T: u8[]) || is(T: char[]));
+
 pragma(inline) void
 Int3()
 {
@@ -113,6 +115,26 @@ Errf(Args...)(string fmt, Args args)
 	Logf!("ERROR", Args)(fmt, args);
 }
 
+static string
+AssignStr(T, alias param)() if(StringType!(T))
+{
+	import std.format : format;
+
+	enum string id = __traits(identifier, p);
+	string result  = "";
+	static if(is(T == string))
+	{
+		result = id;
+	}
+	else static if(StringType!(T))
+	{
+		result = format("Str(%s)", id);
+	}
+	else static assert(false, "Unknown type for AssignItem");
+
+	return result;
+}
+
 string
 Scratchf(Args...)(string fmt, Args args)
 {