I want to develop a class/method that takes as input a string of this format: "((true | false) & (!false & false))", and returns true or false, accordingly (in this case false).
How should I proceed?
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Tunaki
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Endrit Sino
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So you want to take a boolean expression in the form of a string and parse it? – Arc676 Nov 02 '15 at 13:53
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Yepp, basically that. – Endrit Sino Nov 02 '15 at 13:57
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Note that this is bitwise boolean evaluation. Boolean `AND` and `OR` are represented by `&&` and `||` respectively. – Mena Nov 02 '15 at 13:57
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You're totally right, but in this case, I am interested in a regular AND/OR evaluation. But, yes to be correct I have to change the symbols. – Endrit Sino Nov 02 '15 at 14:19
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if performance is not the issue AND you're really sure that the boolean expression is safe (security reasons), you can launch a full-blown JavaScript engine and evaluate the expression
like described in the following question.
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WeMakeSoftware
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And [Here](http://stackoverflow.com/questions/10917878/evaluate-string-as-a-condition-java) another good example – Husam Nov 02 '15 at 13:58
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Thank you Funtik! Actually I guess the performance will be an issue, for me. Adding just a small note, that might complicate a bit the problem, is that I am going to implement this in Salesforce(I don't know if you're familiar with), that uses Apex as the propietary language. Apex, is a Java-like language, and I thought that I could get a solution adaptable to Apex, but I appreciate your answer, so thank you. :) – Endrit Sino Nov 02 '15 at 14:08