static void Main(string[] args)
{
Console.Title = "ArithmeticExpression";
Console.WriteLine("'vars' to list variables, 'clear' to clear expression tree");
var e = new ExpressionTree();
var p = new Interpreter.InputParser(e);
string line;
while (!string.IsNullOrEmpty(line = Console.ReadLine()))
{
switch (line)
{
case "vars": // Dump variables
Console.ForegroundColor = ConsoleColor.DarkGreen;
Console.WriteLine("Variables:");
foreach (var kvp in e.Context.Variables)
Console.WriteLine("\t{0} = {1}", kvp.Key, kvp.Value);
Console.ForegroundColor = ConsoleColor.Gray;
break;
case "clear":
e.Clear();
break;
default:
p.Parse(line);
try
{
Console.WriteLine();
Console.WriteLine(e.InfixExpression);
Console.WriteLine($"Stack: [{string.Join(" ", e.GetEvaluated())}]");
}
catch (UndefinedVariableException ex)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($">> {ex.Message}");
Console.ForegroundColor = ConsoleColor.Gray;
}
break;
}
}
Console.ReadKey();
}
public InputParser(ExpressionTree expression)
{
Expression = expression;
}
