The antlr/intellij-plugin-v4 repository is an IntelliJ IDEA plugin that provides comprehensive language support for ANTLR v4 grammar files (.g4). It offers syntax highlighting, real-time error checking, code navigation, refactoring capabilities (such as rule extraction and inlining), live parse tree preview, grammar profiling, and code generation. The plugin integrates deeply with the IntelliJ Platform SDK, implementing extension points like FileTypeFactory, ParserDefinition, SyntaxHighlighterFactory, ExternalAnnotator, StructureViewFactory, CompletionContributor, and custom tool windows. Its architecture follows a modular design where core functionality is separated into concerns such as parsing, preview, refactoring, and configuration, utilizing patterns like the adaptor pattern for ANTLR integration, background processing for UI responsiveness, and specialized token streams for incremental parsing.
This repository is Visual Studio Code Void, a deprecated fork of VS Code focused on AI-enhanced desktop editing. While the project is no longer accepting contributions per its README, it contains the core VS Code architecture with additional AI-oriented features in the `src/vs/workbench/contrib/void/` directory. The application provides a code editor experience with syntax highlighting, IntelliSense, debugging, and extension support, built on Electron for desktop with web fallback capabilities. It features a modular architecture with core editor (Monaco), workbench/UI framework, platform services, and extension system, along with a Rust-based CLI for code and tunnel management.