I'm trying to understand how modern IDEs, such as Visual Studio Code, JetBrains IntelliJ, or Eclipse, are developed. Specifically, I would like to know:
What technologies are used to build an IDE? (programming languages, frameworks, rendering engines)
How does the code parsing and analysis system work to provide advanced features like autocomplete (IntelliSense) and static code analysis?
How do IDEs communicate with the supported programming languages? Is there a standard protocol for this?
Are there any open-source libraries or tools to create an IDE from scratch or implement IntelliSense-like features in a custom editor?
If anyone could provide useful resources (documentation, GitHub repositories, technical articles), I would greatly appreciate it.
Thanks in advance!