I just sent you the source and examples to your personal email adress.
Darius
----- Original Message -----
From: "Alexandre Leclerc" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, June 09, 2006 5:11 PM
Subject: Re: [lazarus] Looking for an expression evaluator
Yes, I got symbolic from somewhere else. But I'm not sure this is
easely doing what I need because I can't find an example. I really
need a complete environement where I can define variables that are
formula based and can use other variable that are formula based. Then
I need the result of any of there variables.
I might double check.
2006/6/9, Darius Blaszijk <[EMAIL PROTECTED]>:
Alexandre,
Try JediMath. It has a unit named Symbolic which is written by Marco van
der
Voort. The same unit is also on the FPC SVN available, I can't find it at
the moment, but it's there (with example). If you need specific help
here,
just ask.
Darius
----- Original Message -----
From: "Alexandre Leclerc" <[EMAIL PROTECTED]>
To: "lazarus mailinglist" <[email protected]>
Sent: Friday, June 09, 2006 4:31 PM
Subject: [lazarus] Looking for an expression evaluator
> Hi all,
>
> I'm looking for an expression evaluator that is able of the following
> (and works under fpc - I tried TExpressionParser from Egbert van Nes
> but even if it compiles, it doesn't works... unless this is me not
> using it properly):
>
> //this is a pseudo example of the functionnality I'm looking for:
> ExpressionParser.AddVariable('Var1 := 2 + 2');
> ExpressionParser.AddVariable('Var2 := (2 * 2) / 2');
> ExpressionParser.AddVariable('Total := Var1 + Var2 +
> MyFunction(2,3,4)');
> ExpressionParser.AddFunction('MyFunction', 3); //number of parameters
> result := ExpressionParser.GetResult('Var2');
> result := ExpressionParser.GetResult('Total');
>
> ExpressionParser.OnFunction(const functName: string; var: array of
> string; var result: string);
> begin
> result := '0';
> if functName = 'MyFunction' then
> result := '5'; //could process the variables...
> end;
>
>
> Regards.
>
> --
> Alexandre Leclerc
>
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Alexandre Leclerc
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