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There are plenty of open-source parsers available. - ZeosDBO has powerful engine in \src\core\ (units ZExpression.pas, ZExprParser.pas, ZExprToken.pas, ZTokenizer.pas), you could take any part of it and customize to your needs - IBExpress from std lib has RAD\source\IBX\IBX.IBScript.pas with the parser as well, just as FireDAC in RAD\source\data\firedac\FireDAC.Stan.Expr.pas for expressions and FireDAC.Comp.Script.pas for scripts - Template engine from DVDChief also has expression parser - and so on Moreover, with such simple tokens you can easily write it yourself Btw, I don't realize what "testing" and "text" are in your example. Variables? Or just single words to search for, with quotes removed for simplicity (a la Google)? That's a nice task to solve, huh. Depending on maximum nesting level allowed it could require some discrete maths.

It can. Just override GetDialect method (uses sqlparse) type TCustomExpression = class(TSQLExpression) private FDialect: TSQLDialect; public function GetDialect: TSQLDialect; override; destructor Destroy; override; end; destructor TCustomExpression.Destroy; begin FDialect.Free; inherited; end; function TCustomExpression.GetDialect: TSQLDialect; begin if FDialect = nil then FDialect := TSQLDialect.Create; Result := FDialect; end; procedure TForm67.Button1Click(Sender: TObject); var SE: TCustomExpression; begin SE := TCustomExpression.Create(nil); SE.ParseString('user=''john'' or user = ''peter'''); ShowMessage(SE.Node.Children[0].Children[1].Name); //=john end; Also there is pascal expression class in htscriptparse unit: var SE: TScriptExpression; begin SE := TScriptExpression.CreateAndParse('(user=''john'') or (user = ''peter'')'); SE.Variables['user'] := 'peter'; ShowMessage(SE.Calc)

I found what is interfering there was background loading of TWebBrowser that changes precision in FPU Control Word thx all

I spent quite a bit of time with Ann Lynnworth from https://www.codenewsfast.com and restored a full archive there. You can go find all the old messages there.

I miss the old newsgroups 😢 None of the newer web-based forums have really matched up to them, in terms of usability, monitoring, organization. It is just not the same.

🙂. But (IMHO) dropping of official forum was really wrong decision. In old days (since ~2000 year) I usually started my day from browsing of official newsgroups (in good old plain text and very handy tree format of messages) and I still have a huge collection of answers in "how to ..." style from famous specialists like Peter Below, Remy, and many others. After end of NG civilization there is no default place where I can get help from gurus and be well informed. Yes, you can say that there are many such places but "many" means "scattered" in this context ...

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