/// <summary>
/// Visit the anyof expression.
/// </summary>
/// <param name="expr">AnyOf expression.</param>
/// <returns></returns>
public object VisitAnyOf(AnyOfExpr expr)
{
var result = false;
var leftExpr = expr.CompareExpr;
var leftResult = leftExpr.Evaluate(this) as LObject;
if (expr.ParamListExpressions == null || expr.ParamListExpressions.Count == 0)
{
return(new LBool(result));
}
// Resolve the parameters.
ParamHelper.ResolveNonNamedParameters(expr.ParamListExpressions, expr.ParamList, this);
foreach (var rvalue in expr.ParamList)
{
var rightResult = rvalue as LObject;
var compareResult = EvalHelper.Compare(expr, Operator.EqualEqual, leftResult, rightResult) as LObject;
if (compareResult != null && compareResult.Type == LTypes.Bool && ((LBool)compareResult).Value == true)
{
result = true;
break;
}
}
return(new LBool(result));
}
/// <summary>
/// Evaluate > >= != == less less than
/// </summary>
/// <returns></returns>
public object VisitCompare(CompareExpr expr)
{
var node = expr;
var op = expr.Op;
// TODO: This should be here ( find a better solution )
// e.g. allow expression to support comparable ??
if (expr.Right.Nodetype == NodeTypes.SysAnyOf)
{
var anyOf = ((AnyOfExpr)expr.Right);
anyOf.CompareExpr = expr.Left;
return(this.VisitAnyOf(anyOf));
}
var left = (LObject)expr.Left.Evaluate(this);
var right = (LObject)expr.Right.Evaluate(this);
return(EvalHelper.Compare(node, op, left, right));
}