public Expression substr(Expression stringExpr, Expression index, Expression length) { Expression.Calling call = new Expression.Calling(stringExpr.Index("substr"), PossibleValueTypes.String); call.Parameters.Add(index); call.Parameters.Add(length); return call; }
public Expression charCodeAt(Expression stringExpr, Expression i) { Expression.Calling call = new Expression.Calling(stringExpr.Index("charCodeAt"), PossibleValueTypes.Int32); call.Parameters.Add(i); return call; }