re = /(class|struct|enum|extension)[\h\S]*{$\n(?!\s)/m
str = '// should trigger
public final class Aaaaaaa {
var cat: Bool
}
// should not trigger
class Aaa {
var cat: Bool
}
// should not trigger
func bbb {
}
// should trigger
struct Ccc {
}
// should not trigger
struct Ccc {
}
// should trigger
enum Ddd {
}
// should not trigger
enum Ddd {
}
// should trigger
extension Eee {
}
// should not trigger
extension Eee {
}
'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html