[BUG] Very slow compilation on Eclipse 2019.03 with Lombok 1.18.10

[vmi]

Describe the bug
Compiling about 5000 files takes 15 minutes on Eclipse with Lombok agent.

To Reproduce
Sorry, because it is proprietary software, I cannot put out the reproduction information.

Expected behavior
Compile faster than in the current status.

Version info (please complete the following information):

• Lombok 1.18.10
• OpenJDK Runtime Environment (build 1.8.0_242-b07) / OpenJDK 64-Bit Server VM (build 25.242-b07, mixed mode)
• Eclipse IDE for Java Developers
  • Version: 2019-03 (4.11.0)
  • Build id: 20190314-1200
  • OS: Windows 10, v.10.0, x86_64 / win32
  • Java version: 1.8.0_242

Additional context

I applied a patch ( perftest.patch.txt ) to lombok 1.18.10 and got a log ( lombok.zip ).
The log format is as follows.

1. Value of System.nanoTime()
2. PatchFixesHider.transform_swapped() execution time (ns)
3. Target file name (anonymized)
4. Source start position
5. Source end position

When the logs were totaled, the following results were obtained:

• compilation time: 897.4 sec
• sum of transform_swapped execution time: 1051.0 sec
• number of calls and total execution time for each file ( total-each-files.txt )

I think that the slowdown is caused by the same file being processed too many times.

[hheg]

@vmi I may experience the same problem and trying to figure out if this is the same problem. If I may ask, do you have the CodeMining feature activated when this happens?

[vmi]

@hheg I don't use CodeMining.
I analyzed this issue on 2019.03, but I have found this problem in older Eclipse too.
At least this has happened in Eclipse since 4.6 Neon.

[hheg]

@vmi Ok, I don't remember when they included CodeMining in Eclipse, but IIRC I have the problem I experience with at least 2019-12 and 2020-03-M1.