Calculator Parser

calculator_parser.cs

//Pecedence.cs
public enum Precedence
{
    LOWEST = 0,
    SUM = 1,
    PRODUCT = 2,
    PREFIX = 3,
    POWER = 4,
    GROUP = 5,
}
//Parser.cs
public class Parser
{
    //...
    private static IDictionary<TokenType, Precedence> _precedences = new Dictionary<TokenType, Precedence>
    {
        {TokenType.PLUS, Precedence.SUM},
        {TokenType.MINUS, Precedence.SUM},
        {TokenType.MULTIPLY, Precedence.PRODUCT},
        {TokenType.DIVIDE, Precedence.PRODUCT},
        {TokenType.POWER, Precedence.POWER},
        {TokenType.LPAREN, Precedence.GROUP}
    };
    //...
}