Custom Language Support Tutorial

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

This a step-by-step tutorial, and it requires completing each step, in order:

• 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

• 19. Documentation