//THE MOTHER FUNCTION
public int handledIt(string input)
{
//declare variable to hold result from operation
int result = 0;
//set stack_record so that I can access the last user input
stack_record.lastQ = input;
//create new expression class to handle parsing user input
Expression myExp = new Expression();
//allow the container to be set from the parseExpression method
Container answer = myExp.ParseExpression(input);
//search the equation for a constant and parse it out to do the math on.
string ContString = "abcdefghijklmnopqrstuvwxyz";
foreach (var letter in input)
{
if (ContString.IndexOf(letter) == 0)
{
Console.WriteLine("No Constant Defined");
}
else
{
}
}
//shorthand the variables from Container class
int lhs = answer.LHS;
int rhs = answer.RHS;
char op = answer.OP;
string constant = answer.CONS;
//run the operator logic
if (op == '+')
{
Add add_me = new Add();
result = add_me.addIt(lhs, rhs);
}
else if (op == '-')
{
Subtract subtract_me = new Subtract();
result = subtract_me.subtractIt(lhs, rhs);
}
else if (op == '*')
{
Multiply multiply_me = new Multiply();
result = multiply_me.multiplyIt(lhs, rhs);
}
else if (op == '/')
{
Divide divide_me = new Divide();
result = divide_me.divideIt(lhs, rhs);
}
else if (op == '%')
{
Modulo modulo_me = new Modulo();
result = modulo_me.moduloIt(lhs, rhs);
}
else if (op == '=')
{
conts.Add(constant, rhs);
result = rhs;
}
else
{
throw new InvalidOperationException("no valid operator found");
}
//set stack_record result for later access
stack_record.last = result;
return(result);
}
// evaluator
private void btnEq_Click(object sender, EventArgs e)
{
Expression expression;
Double sndArgument = new Double();
if (textBoxRes.Text.Equals("x") || textBoxRes.Text.Equals("y") || textBoxRes.Text.Equals("z"))
{
using (var form = new CalculatorValueForVariables())
{
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
sndArgument = form.varValue;
}
}
}
else
{
sndArgument = Double.Parse(textBoxRes.Text);
}
switch (calcOperator)
{
case "sqrt":
if (!(resultValue < 0))
{
expression = new Sqrt(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't calculate sqrt of a neg num!";
}
break;
case "neg":
expression = new Opposite(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "cos":
expression = new Cosinus(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "sin":
expression = new Sinus(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "exp":
expression = new Exponentation(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "abs":
expression = new Abs(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "log":
if (resultValue > 0)
{
expression = new Log(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't calculate log of a neg num!";
}
break;
case "+":
labelCurrentExpr.Text += sndArgument;
expression = new Addition(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "-":
labelCurrentExpr.Text += sndArgument;
expression = new Subtraction(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "*":
labelCurrentExpr.Text += sndArgument;
expression = new Multiplication(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "/":
labelCurrentExpr.Text += sndArgument;
if (!sndArgument.Equals(0))
{
expression = new Division(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't divide by 0";
}
break;
case "^":
labelCurrentExpr.Text += sndArgument;
expression = new Power(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "%":
labelCurrentExpr.Text += sndArgument;
expression = new Modulo(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
}
resultValue = 0;
labelCurrentExpr.Text = "";
}
public void SetUp()
{
_modulo = new Modulo();
}
