internal ExpressionEvaluator(string expression, NEVariables variables, int row, string unit)
{
this.expression = expression;
this.variables = variables;
this.row = row;
this.unit = unit;
}
public List <T> EvaluateList <T>(NEVariables variables, int?rowCount = null, string unit = null)
{
try
{
if (rowCount < 0)
{
throw new ArgumentException($"{nameof(rowCount)} must be positive");
}
var count = rowCount ?? variables.ResultCount(Variables);
return(Enumerable.Range(0, count).Select(row => ChangeType <T>(InternalEvaluate(variables, row, unit))).ToList());
}
catch (AggregateException ex) { throw ex.InnerException ?? ex; }
}
public List <object> EvaluateList(NEVariables variables, int?rowCount = null, string unit = null) => EvaluateList <object>(variables, rowCount, unit);
public T Evaluate <T>(NEVariables variables = null, string unit = null) => EvaluateList <T>(variables, 1, unit)[0];
public object Evaluate(NEVariables variables = null, string unit = null) => EvaluateList(variables, 1, unit)[0];
internal object InternalEvaluate(NEVariables variables, int row, string unit) => new ExpressionEvaluator(expression, variables, row, unit).Visit(tree);