using uCalcSoftware;

var uc = new uCalc();
var CommentTransform = uc.NewTransformer();
var CommentTokens = CommentTransform.Tokens;
CommentTokens.Add(".");
CommentTokens.Add("[a-z]+");

var txt = "'This is it' /* 'This is it' This is it */ This is it";

var t = uc.NewTransformer();
t.FromTo("is", "<is>");
Console.WriteLine(t.Transform(txt).Text);

// Now the context will switch between /* and */
// In that context there's no quoted text token,
t.Tokens.ContextSwitch(CommentTokens, "/\\*", "\\*/");
t.FromTo("is", "<is>");
Console.WriteLine(t.Transform(txt).Text);