/// <summary>
/// Call a function by passing in all the values.
/// </summary>
/// <param name="functionName">The name of the function to call.</param>
/// <param name="paramListExpressions">List of parameters as expressions to evaluate first to actual values</param>
/// <param name="paramVals">List to store the resolved paramter expressions. ( these will be resolved if paramListExpressions is supplied and resolveParams is true. If
/// resolveParams is false, the list is assumed to have the values for the paramters to the function.</param>
/// <param name="resolveParams">Whether or not to resolve the list of parameter expression objects</param>
/// <returns></returns>
public object CallByName(string functionName, List <Expr> paramListExpressions, List <object> paramVals, bool resolveParams)
{
var function = GetByName(functionName);
var hasParams = paramListExpressions != null && paramListExpressions.Count > 0;
// 1. Resolve parameters if necessary
if (resolveParams && function != null && (function.HasArguments || hasParams))
{
ParamHelper.ResolveParametersForScriptFunction(function.Meta, paramListExpressions, paramVals);
}
function.ArgumentValues = paramVals;
function.Evaluate();
object result = null;
if (function.HasReturnValue)
{
result = function.ReturnValue;
}
else
{
result = LObjects.Null;
}
return(result);
}
/// <summary>
/// Resolves the parameters.
/// </summary>
protected void ResolveParams()
{
ParamHelper.ResolveParametersForScriptFunction(_fmeta, this.ParamListExpressions, this.ParamList);
}