public ExplicitFormulaParser(IEnumerable <string> variableNames, IEnumerable <string> parameterNames, ParsedFunction parserFunction)
{
_parserFunc = parserFunction;
_parserFunc.SetVariableNames(variableNames.ToList());
_parserFunc.SetParameterNames(parameterNames.ToList());
_parserFunc.LogicalNumericMixAllowed = true;
_parserFunc.LogicOperatorsAllowed = true;
_parserFunc.SimplifyParametersAllowed = true;
}
static void Test1()
{
var startTime = DateTime.UtcNow;
const int NUMBER_ITERATIONS = 100;
const int NUMBER_VARIABLES = 100;
var variableNames = new List <string>();
var variableValues = new List <double>();
var stringToParse = "";
for (var variableIdx = 1; variableIdx <= NUMBER_VARIABLES; variableIdx++)
{
var variable = $"V{variableIdx}";
variableNames.Add(variable);
stringToParse += variable + (variableIdx < NUMBER_VARIABLES ? "+" : "");
variableValues.Add(variableIdx);
}
for (var iterationIdx = 0; iterationIdx < NUMBER_ITERATIONS; iterationIdx++)
{
var pf = new ParsedFunction();
pf.SetVariableNames(variableNames);
pf.StringToParse = stringToParse;
//pf.Parse();
var xmlString = pf.GetXMLString();
double value = pf.CalcExpression(variableValues);
pf = null;
}
var endTime = DateTime.UtcNow;
TimeSpan timeDiff = endTime - startTime;
Console.WriteLine($"Duration = {timeDiff.TotalSeconds} seconds");
// Console.WriteLine($"{value}\n{xmlString}\n");
}
static void Test2()
{
double p1 = 1, p2 = 2, p3 = 3, x = 3, y = 4;
var pf = new ParsedFunction();
var caseSensitive = pf.CaseSensitive;
pf.CaseSensitive = !caseSensitive;
caseSensitive = pf.CaseSensitive;
Console.WriteLine($"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();
}