Query/AppCalc/Operators.cs

namespace AppCalc {
	static class Operators {
		internal static readonly string[] With2Operands = { "+", "-", "*", "/", "%", "^" };

		internal static int GetPrecedence(string token) {
			switch (token) {
				case "^":
					return 4;

				case "*":
				case "/":
				case "%":
					return 3;

				case "+":
				case "-":
					return 2;

				default:
					return 1;
			}
		}

		internal static bool IsRightAssociative(string token) {
			return token == "^";
		}
	}
}