Imports System Imports uCalcSoftware Public Module Program Public Sub Main() Dim uc As New uCalc() '// In example we'll define quoted text using < and > as '// surrounding quotes. Singe and double quotes ' and " '// are already defined by default. This is just an example. '// Quoted text must be defined as TokenType.Literal '// The last argument, 1, means that the literal part of the match will '// be the part of the regex found int the first parenthesis (here's '// there's only one set of parenthesis). Dim t = uc.NewTransformer() Dim SpecialQuotes = t.Tokens.Add("<([^>]*)>", TokenType.Literal, "", 1) SpecialQuotes.SetDataType(BuiltInType.String) SpecialQuotes.IsProperty(ItemIs.QuotedText, true) t.Pattern("{token:1}") Console.WriteLine(t.Filter("abc xyz 123.456 + 25e2").Matches.Text) Console.WriteLine("") '// Based on the definition, the part within < and > is the literal part '// passed to the string + operator used by EvalStr uc.ExpressionTokens.Add(SpecialQuotes) Console.WriteLine(uc.EvalStr(" + < plus more>")) End Sub End Module