Regex to match all outermost pair of bracket into array

Asked Jul 01 '18 at 12:27

Active Jul 01 '18 at 12:27

Viewed 61 times

I want a regex to match all outermost pair of bracket into array with their contents in them even if their content could be nested. This was my code

this gives expected output

console.log("52*((6*8)-4+3^(7+5))".match(/ *(\([^]*\)) */g)) /* => [ '((6*8)-4+3^(7+5))' ]  correct*/

But

this doesn't give expected output

console.log("52*(6*8)-4+3^(7+5)".match(/ *(\([^]*\)) */g)) /* => [ '(6*8)-4+3^(7+5)' ] incorrect expected [ '(6*8)', '(7+5)' ]*/

please if anyone understand this problem help me

asked Jul 01 '18 at 12:27

`\/((.*)/)\g` try that. – Alex Jul 01 '18 at 12:42
2

Apart from abusing regex features that elevate it above regular expressions, parsing nested brackets of unknown depth is impossible. – ASDFGerte Jul 01 '18 at 12:49
@Alex I just tried it and it still show same thing as above – Young Chiagoziem Nwadike Jul 01 '18 at 12:50
4

Possible duplicate of [Regular Expression to match outer brackets](https://stackoverflow.com/questions/546433/regular-expression-to-match-outer-brackets) – ASDFGerte Jul 01 '18 at 12:51
I just want to grab all outermost pair of brackets and return them with their contents – Young Chiagoziem Nwadike Jul 01 '18 at 12:53
Yes, and that is already impossible. – ASDFGerte Jul 01 '18 at 12:55
1

Note: Parsing mathematical expressions is often done by evaluating the **inner**most brackets one after another, which is possible, because you don't have to care about potentially nested brackets. Using something else than regex to parse it the way you want to is an option aswell, of course. – ASDFGerte Jul 01 '18 at 13:00
How about a special library, e.g. [math.js](http://mathjs.org/) – wp78de Jul 02 '18 at 07:26

0 Answers0