Tree-sitter Skill

Overview

Expert skill for creating tree-sitter grammars for incremental parsing and syntax highlighting.

Capabilities

• •Write tree-sitter grammar.js files
• •Handle tree-sitter external scanners
• •Design queries for syntax highlighting
• •Implement incremental parsing support
• •Handle tree-sitter error recovery
• •Generate bindings for various languages
• •Integrate with editors (VS Code, Neovim, Helix)
• •Test grammars with corpus files

Target Processes

• •language-grammar-design.js
• •lexer-implementation.js
• •parser-development.js
• •lsp-server-implementation.js

Dependencies

• •tree-sitter CLI
• •tree-sitter crates/npm packages

Usage Guidelines

1. •Grammar.js: Follow tree-sitter grammar.js conventions
2. •External Scanners: Use external scanners for context-sensitive lexing
3. •Queries: Write highlight.scm and other query files for editor integration
4. •Testing: Build comprehensive corpus test files
5. •Error Recovery: Design grammar with error recovery in mind

Output Schema

{
  "type": "object",
  "properties": {
    "grammarName": { "type": "string" },
    "nodeTypes": {
      "type": "array",
      "items": { "type": "string" }
    },
    "queries": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": ["highlights", "injections", "locals", "tags", "folds"]
      }
    },
    "bindings": {
      "type": "array",
      "items": { "type": "string" }
    },
    "generatedFiles": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}