public ParametersCollection GetFunctionTree(YamlScriptController controller, string expression = null)
{
localContext = new ExpressionContext(controller);
localContext.Options.ParseCulture = CultureInfo.InvariantCulture;
// Allow the expression to use all static public methods of System.Math
localContext.Imports.AddType(typeof(Math));
// Allow the expression to use all static overload public methods our CustomFunctions class
localContext.Imports.AddType(typeof(CustomFunctions));
var variables = new System.Collections.Generic.Dictionary <string, Type>();
var parameters = new ParametersCollection();
localContext.Variables.ResolveVariableType += (object sender, ResolveVariableTypeEventArgs e) =>
{
parameters.Add(new Parameter(e.VariableName, 0, null, ref _model));
variables.Add(e.VariableName, typeof(object));
e.VariableType = typeof(object);
};
if (expression != null)
{
try
{
IGenericExpression <object> eDynamic = localContext.CompileGeneric <object>(expression);
}
catch
{
}
return(parameters);
}
foreach (var formula in _model.Formulas)
{
try
{
IGenericExpression <object> eDynamic = localContext.CompileGeneric <object>(formula.Functions[0].Expression);
}
catch
{
}
}
return(parameters);
}
public FormulaExpressionContext(ref Model.Model model, ref IParametersCollection parameters, Formula formula, QuestionDelegate onQuestion, YamlScriptController controller)
{
_parameters = parameters as ParametersCollection ?? throw new ArgumentNullException(nameof(parameters));
_formula = formula ?? throw new ArgumentNullException(nameof(formula));
OnQuestion = onQuestion ?? throw new ArgumentNullException(nameof(onQuestion));
_model = model ?? throw new ArgumentNullException(nameof(model));
// Define the context of our expression
_context = new ExpressionContext(controller);
_context.Options.ParseCulture = CultureInfo.InvariantCulture;
// Allow the expression to use all static public methods of System.Math
_context.Imports.AddType(typeof(Math));
// Allow the expression to use all static overload public methods our CustomFunctions class
_context.Imports.AddType(typeof(CustomFunctions));
// Financial formulas
_context.Imports.AddType(typeof(BankingFormulas));
_context.Imports.AddType(typeof(CorporateFormulas));
_context.Imports.AddType(typeof(FinancialFormulas));
_context.Imports.AddType(typeof(FinancialMarketsFormulas));
_context.Imports.AddType(typeof(GeneralFinanceFormulas));
_context.Imports.AddType(typeof(StocksBondsFormulas));
// this will visit ResolveVariableType
_context.Variables.ResolveVariableType += ResolveVariableType;
// this will visit ResolveVariableValue
_context.Variables.ResolveVariableValue += ResolveVariableValue;
Map(ref _parameters, _context.Variables);
}
