Intellij idea：如何使用regexp创建自定义检查规则

Question

I`m looking for a way to create an inspection rule in Intellij that identifies when there are inline comments and moves them to their own line above.

Example: Find

someCode() // someComment

and replace with

// someComment
someCode()

I was able to find the correct regexp to find and replace:

Find: (. \\S. )(//)(. \\S. )
Replace: $2$3\\n$1

But I can`t find a way to make a rule of it.

I have read the documentation on https://www.jetbrains.com/idea/help/creating-custom-inspections.html But can`t find any examples that uses regexp for search and replace.

Answer 1

Your regexp seems to be wrong. It does not work the way you think .

This one should work ^(.*)//(.*)

However, I'm not completelly sure that you can use it as a custom inspection.

According to documentation . You need to define some structure based on "placeholders". The placeholders seem to allow regular expressions , but the main structure doesn't seem to do so as it requires an specific syntax.