public Delegate Build()
{
if (!resultDataType.HasValue)
throw new Exception("Please define a result data type for the formula.");
Func<Dictionary<string, double>, double> formula = engine.Build(formulaText);
FuncAdapter adapter = new FuncAdapter();
return adapter.Wrap(parameters, variables => formula(variables));
}
public void TestFuncAdapterWrap()
{
FuncAdapter adapter = new FuncAdapter();
List<ParameterInfo> parameters = new List<ParameterInfo>() {
new ParameterInfo() { Name = "test1", DataType = DataType.Integer },
new ParameterInfo() { Name = "test2", DataType = DataType.FloatingPoint }
};
Func<Dictionary<string, double>, double> function = (dictionary) => dictionary["test1"] + dictionary["test2"];
Func<int, double, double> wrappedFunction = (Func<int, double, double>)adapter.Wrap(parameters, function);
Assert.AreEqual(3.0, wrappedFunction(1, 2.0));
}
public void TestFourArguments()
{
FuncAdapter adapater = new FuncAdapter();
List<ParameterInfo> parameters = new List<ParameterInfo>() {
new ParameterInfo() { Name = "test1", DataType = DataType.Integer },
new ParameterInfo() { Name = "test2", DataType = DataType.Integer },
new ParameterInfo() { Name = "test3", DataType = DataType.Integer },
new ParameterInfo() { Name = "test4", DataType = DataType.Integer }
};
Func<int, int, int, int, double> wrappedFunction = (Func<int, int, int, int, double>)adapater.Wrap(parameters, dictionary => dictionary["test4"]);
Assert.AreEqual(8.0, wrappedFunction(2, 4, 6, 8));
}