intellij-sdk-code-samples/tutorials/custom_language_support_tutorial.md

title
Custom Language Support Tutorial

In this tutorial we will add support for .properties language and its usages within Java code.

The final code can be found in the SamplePlugin repo on GitHub.

This a step-by-step tutorial and it requires performing every step:

• 1. Prerequisites
• 2. Language and File Type
• 3. Grammar and Parser
• 4. Lexer and Parser Definition
• 5. Syntax Highlighter and Color Settings Page
• 6. PSI Helpers and Utilities
• 7. Annotator
• 8. Line Marker Provider
• 9. Completion Contributor
• 10. Reference Contributor
• 11. Find Usages Provider
• 12. Folding Builder
• 13. Go To Symbol Contributor
• 14. Structure View Factory
• 15. Formatter
• 16. Code Style Settings
• 17. Commenter
• 18. Quick Fix