public static bool IsOpenParenthesis(Token token)
{
return (token.Type == TokenType.Operator && token.LinearToken.Equals(AllOperators.Find("(").SymbolText));
}
private static Token EvaluateArithmetic(Token token1, Token token2, Token operatorToken)
{
//check if both tokens are numeric constants
double number1 = double.NaN;
double number2 = double.NaN;
bool validNumber1 = (token1.Type == TokenType.Constant) && double.TryParse(token1.LinearToken, out number1);
bool validNumber2 = (token2.Type == TokenType.Constant) && double.TryParse(token2.LinearToken, out number2);
if (validNumber1 && validNumber2)
{
Operator op = AllOperators.Find(operatorToken.LinearToken);
double returnValue = double.NaN;
returnValue = op.Execute(number1, number2);
returnValue = Math.Round(returnValue, 4);
Constant returnValueConstant = new Constant() { Value = returnValue.ToString() };
return (new Token(TokenType.Constant, returnValueConstant));
}
else
{
return (CalcUtilities.CreateNumberConstantToken("1"));
}
}
public static bool IsArithmeticOperator(Token token)
{
return (token.Type == TokenType.Operator && !IsOpenParenthesis(token) && !IsCloseParenthesis(token));
}
