Regex of function call code

Question

I've strings like

con(tRegionDefaults.committee_chairman,', Secretary & Treasurer')
con('Non-Voting Member - ',tRegionDefaults.corptypelong,' Manager')
con('Vice ',tRegionDefaults.committee_chairman)

Tried to make a regex for getting all function parameters from each of the examples (including single quotes where the argument is a string), however with no success.

What I came upon was this regex but it doesn't give me groups of the function parameters:

([\(])([^,]+)+(\))

Can anyone give hint how to do that?

Unless you need to allow nested parentheses, just get everything from ( to ). If you have to allow nested parentheses, you need to write a real parser, regular expressions are not the right tool. — Barmar
– Barmar, Commented Jun 13, 2017 at 17:38
A regexp can't return a variable number of groups. You can't match each parameter in a different group. — Barmar
– Barmar, Commented Jun 13, 2017 at 17:42
If you follow a capture group with + or *, it just captures the first match. — Barmar
– Barmar, Commented Jun 13, 2017 at 17:43

mickmackusa · Accepted Answer · 2017-06-14 08:14:12Z

1

Pattern: '[^']+'|(?<=con\(|,)[^,]+(?=,|\))

Pattern Explanation:

'[^']+'  #Match substrings that are single quoted<br>

|        # or

(?<=con\(|,)[^,]+(?=,|\))  
#Match non-comma characters preceded by con( or comma AND followed by a comma or )

answered Jun 14, 2017 at 8:14

mickmackusa♦

49.3k13 gold badges98 silver badges165 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Barmar · Accepted Answer · 2017-06-13 20:00:35Z

1

Put the capture group around all the arguments, not a single argument.

\((.*)\)

It's not possible to get each argument in a separate capture group, unless you're willing to limit the number of arguments that you capture. Capture groups are determined statically from the regexp by counting the parentheses -- a capture group inside a repetition quantifier still only captures one thing (its first match, I believe).

So use the above regexp to capture all the arguments, then use some other code to split the captured text at , characters.

answered Jun 13, 2017 at 20:00

Barmar

789k57 gold badges555 silver badges669 bronze badges

1 Comment

Martin Asenov Over a year ago

Thanks for your input. The tricky part is that there are commas inside of the string parameters too, and that makes it difficult to parse

Collectives™ on Stack Overflow

Regex of function call code

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related