I am not certain if there's any regex magic that can do this:

foo(f1, f2()) = bar { b1, b2 {}} //match all of this
foo(f3) // dont match this
bar{b3} // dont match this

what I am trying to do is capture an entire line if it contains this pattern:

\w \((?:[^()]|(?RECURSION ON PARENTHESES))*\)\s*=\s*\w {(?:[^{}]|(?RECURSION ON CURLY BRACKETS))*}

CodePudding user response：

You can use regex subroutines:

\w \s*(\((?:[^()]  |(?-1))*\))\s*=\s*\w \s*({(?:[^{}]  |(?-1))*})

See the regex demo.

Details:

• \w - one or more word chars
• \s* - zero or more whitespaces
• (\((?:[^()] |(?-1))*\)) - a substring between paired nested parentheses
• \s*=\s* - a = char enclosed with zero or more whitespaces
• \w \s* - one or more word chars, zero or more whitespaces
• ({(?:[^{}] |(?-1))*}) - a substring between paired nested curly braces.

Note the (?-1) recurses the latest capturing group pattern.