// Middle-ware function
private static void CreateExpr(Opr operation, ref Stack <Expression> exprStack)
{
Expression ex2 = exprStack.Pop();
Expression ex1;
switch (operation.Show())
{
case "x":
ex1 = exprStack.Pop();
exprStack.Push(new MultExpression(ex1, ex2)); break;
case "+":
ex1 = exprStack.Pop();
exprStack.Push(new AddExpression(ex1, ex2)); break;
case "^":
ex1 = exprStack.Pop();
exprStack.Push(new PowerExpression(ex1, ex2)); break;
case "÷":
ex1 = exprStack.Pop();
exprStack.Push(new DivExpression(ex1, ex2)); break;
case "-":
ex1 = exprStack.Pop();
exprStack.Push(new MinusExpression(ex1, ex2)); break;
case "√":
exprStack.Push(new RootExpression(ex2)); break;
case ";":
exprStack.Push(new NegativeExpression(ex2)); break;
default:
throw new SyntaxErrorException();
}
}
private static void PrintEvaluationState(Opr opr, Expression expr1, Expression expr2)
{
Console.Write("Operation State: ");
Console.WriteLine(expr1.Solve() + opr.Show() + expr2.Solve());
}
// Debugging function
private static void PrintOperatorState(Opr opr, string state)
{
Console.WriteLine(state + ":");
Console.WriteLine("Operator:" + opr.Show());
}
