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This was posted on Reddit the other day and there are now 23 votes on this idea. SonarSource provides support for 26 languages, but currently not Delphi/Pascal. Please vote to improve the odds of adding support: https://community.sonarsource.com/t/add-delphi-language-support/5492 These are the languages currently supported: https://www.sonarsource.com/products/codeanalyzers/ With the current ruleset for each language: https://rules.sonarsource.com/

I am at a loss for words. Do people actually use such styles?

I don't recommend that model, ESPECIALLY on Android, which DOES NOT ALLOW you to perform socket operations on the main UI thread if you are targeting API level 11 (Android 3.0 Honeycomb) or later. It will throw a NetworkOnMainThreadException exception if you try. Not only that, but Android will likely just kill your app process outright if the main thread becomes blocked for too long. Or, at the very least, it will prompt the user to kill the process. "safe" is relative to the platform you are running on. But I would not recommend it, since it has the POTENTIAL to block the main thread, which may be acceptable for desktop platforms like Windows, but is certainly not acceptable for mobile platforms like iOS and Android. You can call it in a worker thread and let it block normally. But, if you really want to check manually, the IOHandler does have InputBufferIsEmpty() and CheckForDataOnSource() methods, where the latter has a timeout parameter available that you can set as low as 0ms.