[macro] Expose PositionTools.toZeroRange()

src/macro/macroApi.ml

@@ -2349,6 +2349,10 @@ let macro_api ccom get_api =
 			] in
 			location
 		);
+		"position_to_zero_range", vfun1 (fun p ->
+			let p = decode_pos p in
+			encode_pos (mk_zero_range_pos p)
+		);
 		"on_null_safety_report", vfun1 (fun f ->
 			let f = prepare_callback f 1 in
 			(ccom()).callbacks#add_null_safety_report (fun (errors:(string*pos) list) ->

std/haxe/macro/PositionTools.hx

@@ -70,5 +70,15 @@ class PositionTools {
 	public static function toLocation(p:Position):Location {
 		return Context.load("position_to_range", 1)(p);
 	}
+
+	/**
+		Returns a copy of a `haxe.macro.Position`, with `pmax` set to `pmin`.
+
+		This ensures that the resulting position will not enclose other positions that might be
+		looked at for display requests, which could lead to unexpected results.
+	**/
+	public static function toZeroRange(p:Position):Position {
+		return Context.load("position_to_zero_range", 1)(p);
+	}
 	#end
 }