I'm using the following regex to match the contents of any datascript script referencing a specific UDF:
\[?shared3\]?\.\[?stringsum\]?(((?'Open'\()[^()]*)+((?'Close-Open'\))[^()]*)+)*
it matches any instance of:
Shared3.StringSum(<some contents here>)
Using the balancing groups, I'm trying to also support cases like:
Shared3.StringSum(SomeOtherMethod('input') + AnotherMethod('input'))
However, I'm running into trouble, when the input is like:
Shared3.StringSum(SomeOtherMethod('input') + AnotherMethod('input')) + ThirdMethod('input')
In the last case, my regex also matches the ThirdMethod('input') part.
Is there any way I can alter my regex, so it stops matching as soon as the "parentheses count" is 0?
You may use
\[?shared3]?\.\[?stringsum]?\(((?>[^()]+|(?'Open'\()|(?'Close-Open'\)))*)\)
See the regex demo
Details
\[?shared3]? - an optional [, shared, and an optional ]\. - a dot\[?stringsum]? - an optional[,stringsum, and an optional]`\( - a (((?>[^()]+|(?'Open'\()|(?'Close-Open'\)))*) - Group 1: one or more occurrences of
[^()]+| - 1+ chars other than ( and ), or(?'Open'\()| - Group "Open": pushes ( into group stack(?'Close-Open'\)) - Group "Close" and "Open": pops the ) from the Open group stack and saves the current level substring into Close group\) - a ) char to finish things up