private void button1_Click(object sender, EventArgs e)
{
var parsedFunc = new ParsedFunction();
parsedFunc.StringToParse = " ";
parsedFunc.VariableNames = new List <string> {
"x", "y", "z"
};
parsedFunc.ParameterNames = new List <string> {
"p1", "p2"
};
parsedFunc.ParameterValues = new[] { 0.0, 0.0 };
var errorData = new FuncParserErrorData();
parsedFunc.Parse(errorData);
if (errorData.ErrorNumber == errNumber.err_OK)
{
MessageBox.Show(this, "That wasn't supposed to happen");
}
else
{
MessageBox.Show(this, $"Error is on purpose. The error is {errorData.ErrorNumber}");
}
}
static void Test3()
{
var pf = new ParsedFunction();
var stringsToParse = new[] { "1e-3", "1.25e-4", "-2.2e-2", "1e+3", "1.25e+2", "-2.2e+2" };
foreach (var stringToParse in stringsToParse)
{
pf.StringToParse = stringToParse;
pf.Parse();
var d = pf.CalcExpression(null);
Console.WriteLine($"f({stringToParse}) = {d}");
}
}
static void Test2()
{
double p1 = 1, p2 = 2, p3 = 3, x = 3, y = 4;
var pf = new ParsedFunction();
var caseSensitive = pf.CaseSensitive;
pf.CaseSensitive = !caseSensitive;
caseSensitive = pf.CaseSensitive;
Console.WriteLine($"CaseSensitive={caseSensitive}");
pf.SetVariableNames(new[] { "x", "y" });
pf.SetParameterNames(new[] { "p1", "p2", "p3" });
pf.SetParameterValues(new[] { p1, p2, p3 });
pf.SetParametersNotToSimplify(new[] { "p3" });
pf.SimplifyParametersAllowed = true;
pf.LogicOperatorsAllowed = false;
pf.LogicalNumericMixAllowed = false;
pf.ComparisonTolerance = 0.1;
pf.StringToParse = "2*p1+3*p2+p3+x*y";
var stringToParse = pf.StringToParse;
pf.Parse();
Console.WriteLine("Parse: OK");
var value = pf.CalcExpression(new[] { x, y });
Console.WriteLine($"p1={p1} p2={p2} p3={p3} x={x} y={y}\n");
Console.WriteLine($"{stringToParse} = {value}\n");
var xmlString = pf.GetXMLString();
Console.WriteLine($"{xmlString}\n");
pf = null;
pf = new ParsedFunction();
pf.SetVariableNames(new[] { "x", "y" });
pf.StringToParse = "x+t";
pf.Parse();
}